Robotic invasion of operation theatre and associated anaesthetic issues: A review
Identifieur interne : 001A00 ( Pmc/Checkpoint ); précédent : 001999; suivant : 001A01Robotic invasion of operation theatre and associated anaesthetic issues: A review
Auteurs : Prem N. Kakar [Inde] ; Jyotirmoy Das [Inde] ; Preeti Mittal Roy [Inde] ; Vijaya Pant [Inde]Source :
- Indian Journal of Anaesthesia [ 0019-5049 ] ; 2011.
Abstract
A Robotic device is a powered, computer controlled manipulator with artificial sensing that can be reprogrammed to move and position tools to carry out a wide range of tasks. Robots and Telemanipulators were first developed by the National Aeronautics and Space Administration (NASA) for use in space exploration. Today’s medical robotic systems were the brainchild of the United States Department of Defence’s desire to decrease war casualties with the development of ‘telerobotic surgery’. The ‘master-slave’ telemanipulator concept was developed for medical use in the early 1990s where the surgeon’s (master) manual movements were transmitted to end-effector (slave) instruments at a remote site. Since then, the field of surgical robotics has undergone massive transformation and the future is even brighter. As expected, any new technique brings with it risks and the possibility of technical difficulties. The person who bears the brunt of complications or benefit from a new invention is the ‘Patient’. Anaesthesiologists as always must do their part to be the patient’s ‘best man’ in the perioperative period. We should be prepared for screening and selection of patients in a different perspective keeping in mind the steep learning curves of surgeons, long surgical hours, extreme patient positioning and other previously unknown anaesthetic challenges brought about by the surgical robot. In this article we have tried to track the development of surgical robots and consider the unique anaesthetic issues related to robot assisted surgeries.
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DOI: 10.4103/0019-5049.76577
PubMed: 21431048
PubMed Central: 3057239
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Kakar</name><affiliation wicri:level="1"><nlm:aff id="AF0001">Department of Anesthesiology Pain Management and Perioperative Care, Fortis Hospital, Shalimar Bagh, New Delhi, India</nlm:aff><country xml:lang="fr">Inde</country><wicri:regionArea>Department of Anesthesiology Pain Management and Perioperative Care, Fortis Hospital, Shalimar Bagh, New Delhi</wicri:regionArea><wicri:noRegion>New Delhi</wicri:noRegion></affiliation></author><author><name sortKey="Das, Jyotirmoy" sort="Das, Jyotirmoy" uniqKey="Das J" first="Jyotirmoy" last="Das">Jyotirmoy Das</name><affiliation wicri:level="1"><nlm:aff id="AF0001">Department of Anesthesiology Pain Management and Perioperative Care, Fortis Hospital, Shalimar Bagh, New Delhi, India</nlm:aff><country xml:lang="fr">Inde</country><wicri:regionArea>Department of Anesthesiology Pain Management and Perioperative Care, Fortis Hospital, Shalimar Bagh, New Delhi</wicri:regionArea><wicri:noRegion>New Delhi</wicri:noRegion></affiliation></author><author><name sortKey="Roy, Preeti Mittal" sort="Roy, Preeti Mittal" uniqKey="Roy P" first="Preeti Mittal" last="Roy">Preeti Mittal Roy</name><affiliation wicri:level="1"><nlm:aff id="AF0001">Department of Anesthesiology Pain Management and Perioperative Care, Fortis Hospital, Shalimar Bagh, New Delhi, India</nlm:aff><country xml:lang="fr">Inde</country><wicri:regionArea>Department of Anesthesiology Pain Management and Perioperative Care, Fortis Hospital, Shalimar Bagh, New Delhi</wicri:regionArea><wicri:noRegion>New Delhi</wicri:noRegion></affiliation></author><author><name sortKey="Pant, Vijaya" sort="Pant, Vijaya" uniqKey="Pant V" first="Vijaya" last="Pant">Vijaya Pant</name><affiliation wicri:level="1"><nlm:aff id="AF0001">Department of Anesthesiology Pain Management and Perioperative Care, Fortis Hospital, Shalimar Bagh, New Delhi, India</nlm:aff><country xml:lang="fr">Inde</country><wicri:regionArea>Department of Anesthesiology Pain Management and Perioperative Care, Fortis Hospital, Shalimar Bagh, New Delhi</wicri:regionArea><wicri:noRegion>New Delhi</wicri:noRegion></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">PMC</idno><idno type="pmid">21431048</idno><idno type="pmc">3057239</idno><idno type="url">http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3057239</idno><idno type="RBID">PMC:3057239</idno><idno type="doi">10.4103/0019-5049.76577</idno><date when="2011">2011</date><idno type="wicri:Area/Pmc/Corpus">001F69</idno><idno type="wicri:Area/Pmc/Curation">001F69</idno><idno type="wicri:Area/Pmc/Checkpoint">001A00</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a" type="main">Robotic invasion of operation theatre and associated anaesthetic issues: A review</title><author><name sortKey="Kakar, Prem N" sort="Kakar, Prem N" uniqKey="Kakar P" first="Prem N" last="Kakar">Prem N. Kakar</name><affiliation wicri:level="1"><nlm:aff id="AF0001">Department of Anesthesiology Pain Management and Perioperative Care, Fortis Hospital, Shalimar Bagh, New Delhi, India</nlm:aff><country xml:lang="fr">Inde</country><wicri:regionArea>Department of Anesthesiology Pain Management and Perioperative Care, Fortis Hospital, Shalimar Bagh, New Delhi</wicri:regionArea><wicri:noRegion>New Delhi</wicri:noRegion></affiliation></author><author><name sortKey="Das, Jyotirmoy" sort="Das, Jyotirmoy" uniqKey="Das J" first="Jyotirmoy" last="Das">Jyotirmoy Das</name><affiliation wicri:level="1"><nlm:aff id="AF0001">Department of Anesthesiology Pain Management and Perioperative Care, Fortis Hospital, Shalimar Bagh, New Delhi, India</nlm:aff><country xml:lang="fr">Inde</country><wicri:regionArea>Department of Anesthesiology Pain Management and Perioperative Care, Fortis Hospital, Shalimar Bagh, New Delhi</wicri:regionArea><wicri:noRegion>New Delhi</wicri:noRegion></affiliation></author><author><name sortKey="Roy, Preeti Mittal" sort="Roy, Preeti Mittal" uniqKey="Roy P" first="Preeti Mittal" last="Roy">Preeti Mittal Roy</name><affiliation wicri:level="1"><nlm:aff id="AF0001">Department of Anesthesiology Pain Management and Perioperative Care, Fortis Hospital, Shalimar Bagh, New Delhi, India</nlm:aff><country xml:lang="fr">Inde</country><wicri:regionArea>Department of Anesthesiology Pain Management and Perioperative Care, Fortis Hospital, Shalimar Bagh, New Delhi</wicri:regionArea><wicri:noRegion>New Delhi</wicri:noRegion></affiliation></author><author><name sortKey="Pant, Vijaya" sort="Pant, Vijaya" uniqKey="Pant V" first="Vijaya" last="Pant">Vijaya Pant</name><affiliation wicri:level="1"><nlm:aff id="AF0001">Department of Anesthesiology Pain Management and Perioperative Care, Fortis Hospital, Shalimar Bagh, New Delhi, India</nlm:aff><country xml:lang="fr">Inde</country><wicri:regionArea>Department of Anesthesiology Pain Management and Perioperative Care, Fortis Hospital, Shalimar Bagh, New Delhi</wicri:regionArea><wicri:noRegion>New Delhi</wicri:noRegion></affiliation></author></analytic><series><title level="j">Indian Journal of Anaesthesia</title><idno type="ISSN">0019-5049</idno><idno type="eISSN">0976-2817</idno><imprint><date when="2011">2011</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en"><p>A Robotic device is a powered, computer controlled manipulator with artificial sensing that can be reprogrammed to move and position tools to carry out a wide range of tasks. Robots and Telemanipulators were first developed by the National Aeronautics and Space Administration (NASA) for use in space exploration. Today’s medical robotic systems were the brainchild of the United States Department of Defence’s desire to decrease war casualties with the development of ‘telerobotic surgery’. The ‘master-slave’ telemanipulator concept was developed for medical use in the early 1990s where the surgeon’s (master) manual movements were transmitted to end-effector (slave) instruments at a remote site. Since then, the field of surgical robotics has undergone massive transformation and the future is even brighter. As expected, any new technique brings with it risks and the possibility of technical difficulties. The person who bears the brunt of complications or benefit from a new invention is the ‘Patient’. Anaesthesiologists as always must do their part to be the patient’s ‘best man’ in the perioperative period. We should be prepared for screening and selection of patients in a different perspective keeping in mind the steep learning curves of surgeons, long surgical hours, extreme patient positioning and other previously unknown anaesthetic challenges brought about by the surgical robot. In this article we have tried to track the development of surgical robots and consider the unique anaesthetic issues related to robot assisted surgeries.</p></div></front><back><div1 type="bibliography"><listBibl><biblStruct><analytic><author><name sortKey="Satava, R" uniqKey="Satava R">R Satava</name></author><author><name sortKey="Richard, M" uniqKey="Richard M">M Richard</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Weisbin, Cr" uniqKey="Weisbin C">CR Weisbin</name></author><author><name sortKey="Montemerlo, Md" uniqKey="Montemerlo M">MD Montemerlo</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Martin, Hl" uniqKey="Martin H">HL Martin</name></author><author><name sortKey="Kuban, Dp" uniqKey="Kuban D">DP Kuban</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Vertut, J" uniqKey="Vertut J">J Vertut</name></author><author><name sortKey="Coiffet, P" uniqKey="Coiffet P">P 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article-type="research-article"><pmc-dir>properties open_access</pmc-dir>
<front><journal-meta><journal-id journal-id-type="nlm-ta">Indian J Anaesth</journal-id><journal-id journal-id-type="publisher-id">IJA</journal-id><journal-title-group><journal-title>Indian Journal of Anaesthesia</journal-title></journal-title-group><issn pub-type="ppub">0019-5049</issn><issn pub-type="epub">0976-2817</issn><publisher><publisher-name>Medknow Publications</publisher-name><publisher-loc>India</publisher-loc></publisher></journal-meta><article-meta><article-id pub-id-type="pmid">21431048</article-id><article-id pub-id-type="pmc">3057239</article-id><article-id pub-id-type="publisher-id">IJA-55-18</article-id><article-id pub-id-type="doi">10.4103/0019-5049.76577</article-id><article-categories><subj-group subj-group-type="heading"><subject>Special Article</subject></subj-group></article-categories><title-group><article-title>Robotic invasion of operation theatre and associated anaesthetic issues: A review</article-title></title-group><contrib-group><contrib contrib-type="author"><name><surname>Kakar</surname><given-names>Prem N</given-names></name><xref ref-type="aff" rid="AF0001"></xref><xref ref-type="corresp" rid="cor1"></xref></contrib><contrib contrib-type="author"><name><surname>Das</surname><given-names>Jyotirmoy</given-names></name><xref ref-type="aff" rid="AF0001"></xref></contrib><contrib contrib-type="author"><name><surname>Roy</surname><given-names>Preeti Mittal</given-names></name><xref ref-type="aff" rid="AF0001"></xref></contrib><contrib contrib-type="author"><name><surname>Pant</surname><given-names>Vijaya</given-names></name><xref ref-type="aff" rid="AF0001"></xref></contrib></contrib-group><aff id="AF0001">Department of Anesthesiology Pain Management and Perioperative Care, Fortis Hospital, Shalimar Bagh, New Delhi, India</aff><author-notes><corresp id="cor1"><bold>Address for correspondence:</bold> Dr. Prem N Kakar, Department of Anesthesiology Pain Management and Perioperative Care, Fortis Hospital, Shalimar Bagh, New Delhi, India. E-mail: <email xlink:href="pn_kakar@hotmail.com">pn_kakar@hotmail.com</email></corresp></author-notes><pub-date pub-type="ppub"><season>Jan-Feb</season><year>2011</year></pub-date><volume>55</volume><issue>1</issue><fpage>18</fpage><lpage>25</lpage><permissions><copyright-statement>© Indian Journal of Anaesthesia</copyright-statement><copyright-year>2011</copyright-year><license license-type="open-access" xlink:href="http://creativecommons.org/licenses/by/2.0/"><license-p>This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.</license-p></license></permissions><abstract><p>A Robotic device is a powered, computer controlled manipulator with artificial sensing that can be reprogrammed to move and position tools to carry out a wide range of tasks. Robots and Telemanipulators were first developed by the National Aeronautics and Space Administration (NASA) for use in space exploration. Today’s medical robotic systems were the brainchild of the United States Department of Defence’s desire to decrease war casualties with the development of ‘telerobotic surgery’. The ‘master-slave’ telemanipulator concept was developed for medical use in the early 1990s where the surgeon’s (master) manual movements were transmitted to end-effector (slave) instruments at a remote site. Since then, the field of surgical robotics has undergone massive transformation and the future is even brighter. As expected, any new technique brings with it risks and the possibility of technical difficulties. The person who bears the brunt of complications or benefit from a new invention is the ‘Patient’. Anaesthesiologists as always must do their part to be the patient’s ‘best man’ in the perioperative period. We should be prepared for screening and selection of patients in a different perspective keeping in mind the steep learning curves of surgeons, long surgical hours, extreme patient positioning and other previously unknown anaesthetic challenges brought about by the surgical robot. In this article we have tried to track the development of surgical robots and consider the unique anaesthetic issues related to robot assisted surgeries.</p></abstract><kwd-group><kwd>Da Vinci Robotic system</kwd><kwd>extreme position</kwd><kwd>surgical robot</kwd><kwd>telemanipulation</kwd></kwd-group></article-meta></front><body><sec sec-type="" id="sec1-1"><title>DEVELOPMENT OF SURGICAL ROBOTICS</title><p>Of all wounded soldiers in Vietnam War, one third of the total deaths were due to exsanguinating haemorrhage that had the potential to survive if they were treated in time.[<xref ref-type="bibr" rid="CIT1">1</xref>] In 1985, NASA instituted a research program in Telerobotics to develop the technology for the United States Space program.[<xref ref-type="bibr" rid="CIT2">2</xref>] Early developments in Telerobotics were confined to the fields of nuclear, underwater and space applications.[<xref ref-type="bibr" rid="CIT3">3</xref><xref ref-type="bibr" rid="CIT4">4</xref>] Relevant studies have also been carried out by the German Aerospace Center[<xref ref-type="bibr" rid="CIT5">5</xref>] and the Japanese Space Agency.[<xref ref-type="bibr" rid="CIT6">6</xref>] Newer fields of application of Telerobotics have emerged during the 80’s and 90’s, such as surgery,[<xref ref-type="bibr" rid="CIT7">7</xref>] rescue,[<xref ref-type="bibr" rid="CIT8">8</xref>] education, people assistance, mining, etc.[<xref ref-type="bibr" rid="CIT9">9</xref><xref ref-type="bibr" rid="CIT10">10</xref>] The first documented use of a robot assisted surgical procedure was in 1985 when the PUMA 560 robotic surgical arm was used to take a neurosurgical biopsy.[<xref ref-type="bibr" rid="CIT11">11</xref>] In 1990, the U.S. Food and Drug Administration (FDA) approved the Automated Endoscopic System for Optimal Positioning (AESOP)[<xref ref-type="bibr" rid="CIT12">12</xref>] arm for laparoscopic surgery to achieve precise and consistent movements of the camera during surgery. The first telemanipulative robotic assisted laparoscopic cholecystectomy was performed by Jacques Himpens and Guy Cardiere in 1997 in Brussels, Belgium.[<xref ref-type="bibr" rid="CIT13">13</xref>] Marescaux and Gagner[<xref ref-type="bibr" rid="CIT14">14</xref><xref ref-type="bibr" rid="CIT15">15</xref>] performed a robot assisted laparoscopic cholecystectomy between New York City and Strousbourg, France in 2001, with a latency time of 155 msec.</p></sec><sec sec-type="" id="sec1-2"><title>ADVANTAGES</title><p>Robots allow unprecedented control and precision of surgical instruments in minimally invasive procedures and microsurgery [e.g. Trans Oral Robotic Surgery (TORS), natural orifice transluminal endoscopic surgery (NOTES), eye operations, intrauterine fetal surgery]. The robot can filter the surgeon’s hand tremor and scale the movements of the instruments. Present day Robotic surgical systems have 7 degrees of freedom [<xref ref-type="fig" rid="F0001">Figure 1a</xref>] just like the human forelimb in contrast to the laparoscopic arm providing only 4 degrees of freedom.[<xref ref-type="bibr" rid="CIT16">16</xref>] Robot motions and tasks are reproducible and are immune to fatigue.[<xref ref-type="bibr" rid="CIT17">17</xref>]</p><fig id="F0001" position="float"><label>Figure 1</label><caption><p>(a) New generation Robotic instruments have 7 degrees of freedom as the human hand (b) EndoWrist’<sup>®</sup> instrument from Intuitive Surgical [a and b: Courtesy of Intuitive Surgical, Inc, Sunnyvale, CA.]</p></caption><graphic xlink:href="IJA-55-18-g001"></graphic></fig><sec id="sec2-1"><title>Limitations of Robot assisted surgery</title><p>Concerns about patient safety in the event of Robot malfunction and crash down is an issue that the operating room staff should be aware of. Robots are complex inventions which need a lot of practice and technical expertise. Robotic surgery preparation needs longer operating room time compared to conventional surgeries. Several pieces of equipment, each being extremely bulky require large operating room space.[<xref ref-type="bibr" rid="CIT18">18</xref>] For the anaesthesiologist, invasion of the anaesthesia work space by the robot and difficulty in accessing the patient intra operatively is a concern. The staff must be trained and prepared to quickly detach and remove the robot from the patient in the event of an emergency. Current robotic systems lack tactile feedback from the instruments.[<xref ref-type="bibr" rid="CIT19">19</xref>] Surgeons have to rely on visual clues to modulate the amount of tension and pressure applied to tissues to avoid organ damage. The newly launched da Vinci HD SI system costs $1.75 million. Initial increased operating room setup time and surgical time adds to the cost burden. However, robot assisted surgery has shown to reduce hospital stay by about half and thereby cutting hospital cost by about 33%.[<xref ref-type="bibr" rid="CIT20">20</xref>]</p><p>One major obstacle to the telerobotic surgery is the ‘Latent time’, which is the time taken to send an electrical signal from a hand motion to actual visualization of the hand motion on a remote screen. Humans can compensate for delays of less than 200 msec.[<xref ref-type="bibr" rid="CIT21">21</xref>] Longer delays compromise surgical accuracy and safety. Incompatibility with imaging equipments is an area that needs attention.</p></sec><sec id="sec2-2"><title>Present day surgical robotic systems</title><p>Three main types of surgical robots available:</p><p><list list-type="alpha-upper"><list-item><p>Supervisory-controlled Robotic Surgery Systems (e. g. the ROBODOC® system from CUREXO Technology Corporation):[<xref ref-type="bibr" rid="CIT22">22</xref>]</p><p>It is the most automated surgical robots available till date. Surgeons can plan their surgery preoperatively in a 3-D virtual space and then execute the surgery exactly as planned in the operating theatre.</p></list-item><list-item><p>Shared-control Robotic Surgery Systems:</p><p>These robots aid surgeons during surgery, but the human does most of the work.</p></list-item><list-item><p>Telesurgical devices:</p><p>Here, the surgeon directs the motions of the robot. e.g. the da Vinci Robotic system, the ZEUS Surgical System.</p></list-item></list></p></sec><sec id="sec2-3"><title>The da Vinci system</title><p>A product of Intuitive Surgical, the da Vinci Surgical System [Figure <xref ref-type="fig" rid="F0002">2a</xref>, <xref ref-type="fig" rid="F0002">2b</xref>] falls under the category of telesurgical devices. On July 11, 2000, FDA approved the da Vinci Surgical System for laparoscopic procedures.</p><fig id="F0002" position="float"><label>Figure 2</label><caption><p>(a) The da Vinci System Surgeon console; (b) the cart with three mounted surgical arms; (c) Joysticks with viewing ports in the console [a-c: Courtesy of Intuitive Surgical, Inc, Sunnyvale, CA.]</p></caption><graphic xlink:href="IJA-55-18-g002"></graphic></fig><p>Three generations of da Vinci surgical systems have developed so far:[<xref ref-type="bibr" rid="CIT23">23</xref>]</p><p><list list-type="alpha-upper"><list-item><p>da Vinci surgical system (1999)</p><p>It consists of three components: The viewing and control console, surgical arm unit (three or four arms depending on the model) and Optical three-dimensional vision tower</p></list-item><list-item><p>da Vinci S HD surgical system (2006)</p><p>This second generation surgical robot is equipped with wide range of motion of robotic arms and extended length instruments, interactive video displays and touch screen monitor.</p></list-item><list-item><p>da Vinci Si HD surgical system (2009)</p><p>It has dual console capability to support training and collaboration, advanced 3D HD visualization with up to 10× magnification, ‘EndoWrist’<sup>®</sup> instrumentation with dexterity and range of motion more than the human hand and ‘Intuitive<sup>®</sup> motion technology’, which replicates the experience of open surgery by preserving natural eye-hand-instrument alignment.[<xref ref-type="bibr" rid="CIT23">23</xref>]</p></list-item></list></p></sec><sec id="sec2-4"><title>Operating with a da Vinci surgical system</title><p>After positioning of the patient, the surgeon makes three or four small incisions (depending on the number of arms the model has) in the patient’s body. One port accommodates two endoscopic cameras in a single rod that provide a stereoscopic image, while the other ports are dedicated for surgical instruments for dissection and suturing. At the console, the surgeon actually looks at two separate monitors; each eye sees through an independent camera channel to create a virtual three-dimensional stereoscopic image. The surgeon uses joystick-like controls located underneath the screen to manipulate the surgical instruments [<xref ref-type="fig" rid="F0002">Figure 2c</xref>]. Each time the surgeon moves one of the joysticks, a computer sends an electronic signal to one of the instruments, which moves in sync with the movements of the surgeon’s hands [<xref ref-type="fig" rid="F0003">Figure 3</xref>]. To work on a miniature scale, a ‘frequency filter’ eliminates hand tremor greater than 6 Hz and a ‘motion scaling device’ scales down the surgeon’s hand movements[<xref ref-type="bibr" rid="CIT24">24</xref>] up to a ration of 5:1.</p><fig id="F0003" position="float"><label>Figure 3</label><caption><p>(a) Schematic diagram and (b) Actual photograph showing the arrangement of the operating room in Robot assisted surgery [a: Courtesy of Intuitive Surgical, Inc, Sunnyvale, CA.]</p></caption><graphic xlink:href="IJA-55-18-g003"></graphic></fig></sec><sec id="sec2-5"><title>The ZEUS surgical system (Computer Motion Inc)</title><p>The ZEUS<sup>®</sup> surgical system is made up of a surgeon control console [<xref ref-type="fig" rid="F0004">Figure 4a</xref>] and three Table-mounted robotic arms [<xref ref-type="fig" rid="F0004">Figure 4b</xref>], which perform surgical tasks and provide steady visualization using AESOP technology.[<xref ref-type="bibr" rid="CIT12">12</xref>] In 2003, Intuitive Surgical merged with Computer Motion Inc and the ZEUS system was phased out gradually in favor of the da Vinci system.[<xref ref-type="bibr" rid="CIT25">25</xref>]</p><fig id="F0004" position="float"><label>Figure 4</label><caption><p>(a)The console of the ZEUS robotic system; (b) the three arms together on patient’s side [a: Courtesy of Intuitive Surgical, Inc, Sunnyvale, CA.]</p></caption><graphic xlink:href="IJA-55-18-g004"></graphic></fig></sec></sec><sec sec-type="" id="sec1-3"><title>EXAMPLES OF ROBOT ASSISTED SURGERIES</title><p>The <xref ref-type="table" rid="T0001">Table 1</xref> below lists the various commonly performed robot assisted surgeries.</p><table-wrap id="T0001" position="float"><label>Table 1</label><caption><p>List of Robot assisted surgeries</p></caption><table frame="hsides" rules="groups"><tbody><tr><td align="left" rowspan="1" colspan="1">Gastrointestinal surgery</td><td align="left" rowspan="1" colspan="1">Cholecystectomy, splenectomy, Heller myotomy, pancreatectomy, whipple procedure, adrenalectomy, bowel resection, pyloroplasty and antireflux surgery.</td></tr><tr><td align="left" rowspan="1" colspan="1">Cardiac surgery</td><td align="left" rowspan="1" colspan="1">Atrial septal defect closures, mitral valve repairs, patent ductus arteriosus ligations, minimally invasive atrial fibrillation surgery, totally endoscopic coronary artery bypass grafting, left ventticular pacemaker lead placement, etc.</td></tr><tr><td align="left" rowspan="1" colspan="1">Thoracic</td><td align="left" rowspan="1" colspan="1">Esophageal procedures, resection of esophageal masses, and esophagectomy, including Heller myotomy, resection of mediastinal masses and thymectomy</td></tr><tr><td align="left" rowspan="1" colspan="1">Neuro surgery</td><td align="left" rowspan="1" colspan="1">Medical robotics has yet to gain prominence in neurosurgery apart from Cyberknife and ‘NeuroArm’ is the world’s first MRI-Complete surgical robot.</td></tr></tbody></table></table-wrap></sec><sec sec-type="" id="sec1-4"><title>ANAESTHETIC CONSIDERATIONS</title><sec id="sec2-6"><title>I) General considerations in all Robot assisted surgeries</title><sec id="sec3-1"><title>A) Patient selection</title><p>Selection of patients for robot assisted surgery depends on clinical judgement and assessment as to whether the patient could withstand a prolonged period in the extreme position. A history of significant cardiovascular comorbidity, cerebrovascular disease,[<xref ref-type="bibr" rid="CIT26">26</xref>] poor pulmonary function,[<xref ref-type="bibr" rid="CIT27">27</xref>] pulmonary hypertension and glaucoma are considered as independent risk factors for Robot assisted surgeries.[<xref ref-type="bibr" rid="CIT27">27</xref>]</p></sec><sec id="sec3-2"><title>B) Intraoperative preparation</title><p>Two wide bore intravascular cannulae with extension tubings should be placed to administer anaesthetic drugs and fluids intraoperatively. Antisialogouge agents are used in patients requiring extreme patient positioning. Monitoring includes ECG, noninvasive blood pressure, pulse oximetry, end-tidal CO<sub>2</sub> and urine output. Urine output is not a good guide of end organ perfusion in procedures involving manipulation and dissection of the urinary tract.[<xref ref-type="bibr" rid="CIT28">28</xref>] A central venous catheter is a reasonable consideration in certain procedures with major fluid shifts as a monitor of central venous pressure (CVP).[<xref ref-type="bibr" rid="CIT29">29</xref>] Similarly, placement of arterial line for continuous arterial pressure measurement is dictated by the nature of surgery and the preoperative functional status of the patient.[<xref ref-type="bibr" rid="CIT28">28</xref>] The patient should be well strapped to the Table to prevent sliding after positioning and a trial run of the final Table position should be done beforehand to check for any strain on monitoring cables, circuit and intravenous tubings. It is important to record the level of CVP and blood pressure after patient positioning and to treat it as baseline as the extreme positioning may render single isolated readings (especially of CVP) inconclusive. The recommended zero reference level for transducer positioning is the angle of Louis. Deep venous thrombosis prophylaxis should be followed strictly as per protocol.</p><p>The assisting surgeon creates pneumoperitoneum and makes the ports in the patient’s body. Then the robotic arms are docked into the ports and the chief surgeon starts operating by controlling the robotic arms from the console which is kept a little away from the patient. The size and bulk of the robot over the patient and the significant draping on both the robot and patient make it difficult to access the patient intraoperatively. Some procedures require the patient’s airway to be at a distance from the anaesthesiologist and the anaesthesia machine/monitor. It becomes much more challenging if one-lung ventilation is required, since frequent use of the fiberoptic bronchoscope may be necessary. It is important to have all monitors and safety devices (defibrillator pad, Transesophageal echocardiography (TEE), left precordial stethoscope in pediatric patients to detect inadvertent right bronchial intubation) in place before the Robot is docked. Careful attention should also be given to prevent the robotic arms from injuring the patient.[<xref ref-type="bibr" rid="CIT30">30</xref>] Cameras and light sources should never be kept directly on drapes or patient’s skin.</p></sec><sec id="sec3-3"><title>C) Patient positioning</title><p>Common patient positions used are steep Trendelenburg with legs apart for prostatectomy, supine or slight lateral decubitus (raising one side 15° to 30°) position for anterior mediastinum pathology, 90° lateral position for hilar mass and lobectomy and a nearly prone position for posterior mediastinal mass. It is difficult to change the patient’s position once the Robot is docked. So, proper patient positioning should be confirmed beforehand with the surgical team. It is highly recommended that the anaesthesiologist is well versed with various patient positions and their implications. Proper padding/cushions over pressure points should be used to avoid tissue and nerve impingement. While using extreme patient positioning, restraints must be used to prevent the risk of anaesthetized patient sliding off the Table.</p><p>Extreme patient positioning and pneumoperitoneum can cause endotracheal tube migration into the main stem bronchus. Before docking of the Robot, tube positioning must be confirmed. Insignificant changes in cardiac output or stroke volume were noted[<xref ref-type="bibr" rid="CIT31">31</xref>] in spite of increase in mean arterial pressure and systemic vascular resistance. Cerebral oxygenation was shown to increase slightly provided PaCO<sub>2</sub> was kept within normal limit.[<xref ref-type="bibr" rid="CIT32">32</xref><xref ref-type="bibr" rid="CIT33">33</xref>] IOP can increase on an average 13 mm Hg higher than the baseline. Surgical duration and ETCO<sub>2</sub> are significant predictors of IOP increase in the Trendelenburg position.[<xref ref-type="bibr" rid="CIT34">34</xref>] Severe oral ulceration and conjunctival burns may occur from reflux of stomach acid onto the face. As a precautionary measure, stomach should be decompressed by oro/nasopharyngeal tube and the patients’ face kept visible intraoperatively.[<xref ref-type="bibr" rid="CIT28">28</xref>]</p></sec><sec id="sec3-4"><title>D) Anaesthetic technique</title><p>Oxygen, air mixture is used along with inhalational agent and Fentanyl/Remifentanil infusion for maintenance of anaesthesia. In our experience Sevoflurane is the preferred agent in view of its recovery profile and lack of significant central nervous system effects. The anaesthetic issues related to laparoscopic surgeries with creation of pneumoperitoneum are beyond the scope of this article. However we do recommend placement of an epidural catheter and an epidural infusion for not only intra and post operative pain relief but also for the gut volume reduction. Epidural test dose and initial bolus should be given well before patient positioning. Continuous uniform depth of muscle relaxation is of prime importance in avoiding any movements by the patient while the surgical instruments are in place and starting an infusion of muscle relaxant is recommended.</p><p>Fluid replacement: Initial fluid loading is inappropriate in extreme patient positioning and in surgeries needing urethral anastomoses.[<xref ref-type="bibr" rid="CIT28">28</xref>] Suction, made up of a mixture of flush (saline), blood and urine, is not a reliable measure of blood loss.[<xref ref-type="bibr" rid="CIT28">28</xref>] In long operations and when there was evidence of excessive blood loss, not tallying with the suction, intraoperative haematocrit may give a rough guide.</p><p>Diuresis: Mannitol 1–2 g/kg or Furosemide can be used.[<xref ref-type="bibr" rid="CIT28">28</xref>] The rationale is threefold: to promote urine flow to flush out and maintain urinary tract patency, to conserve renal function, and as a prophylaxis against cerebral swelling in extreme Trendelenburg position.</p><p>Cerebral protection: Fluid restriction, maintaining intraoperative ETCO<sub>2</sub>, using minimal insufflation pressures and use of diuretics towards the end of the procedure are some of the techniques commonly employed for avoiding cerebral oedema.</p><p>Reversal: Cognitive recovery may be delayed because of the cerebral oedema and raised intracranial tension, especially after a long surgery in steep head down position. So, early discontinuation of anaesthetic agents may be necessary as soon as the Robot is withdrawn. With more experience and skill and reduced operating time, the issue of delayed cognitive recovery may be resolved. There have been reports of stridor after extubation of the trachea, following laryngeal oedema due to prolonged steep Trendelenburg and overjudicious fluid administration.[<xref ref-type="bibr" rid="CIT35">35</xref>] Presence of peri-orbital oedema should alert the Anaesthetist of the possibility of concomitant airway oedema. Maintenance of airway and prevention of aspiration should be taken care of. There are reports of compartment syndrome in the calves after prolonged lithotomy,[<xref ref-type="bibr" rid="CIT36">36</xref>] necessitating routine checks for calf tightness and tenderness.</p></sec><sec id="sec3-5"><title>E) Postoperative pain relief</title><p>The severity of postoperative pain is less in robot assisted laparoscopic surgeries compared to open procedure. Simple analgesics and opioids as infusions or bolus generally suffice. Epidural analgesia or for that matter anaesthesia is indicated in certain surgeries needing periopertaive sympathetic blockade apart from its use for pain relief.</p></sec></sec><sec id="sec2-7"><title>II) Important issues related to specific surgeries</title><sec id="sec3-6"><title>Cardiac surgery</title><p>Robotic surgery may require unprecedented, prolonged one-lung ventilation. This tests the limits of our knowledge and understanding of one lung anaesthesia. Confirmed placement of a left-sided double-lumen endotracheal tube (DLT) is necessary to allow for the single left-sided ventilation required for cardiac exposure. DLT is preferred to Bronchial blockers in robot assisted cardiac surgery because intermittent right lung inflation is necessary for adequate oxygenation during weaning from Cardiopulmonary Bypass (CPB). Moreover, isolation of the right lung may again be necessary to check for bleeding post CPB.[<xref ref-type="bibr" rid="CIT37">37</xref>] Knowledge of TEE is a must in robot assisted surgeries.</p></sec><sec id="sec3-7"><title>Thoracic surgery</title><p>The principles that apply for thoracoscopic surgery apply for robotic assisted thoracic surgery. A combination of patient position, one lung anaesthesia, and surgical manipulation alter ventilation and perfusion profoundly. Frequently robotic assisted surgeries require insufflation of CO<sub>2</sub> in the chest (CO<sub>2</sub> pneumothorax). This may lead to an increase in the airway pressures and haemodynamic instability secondary to decrease venous return and cardiac compliance. The rate of CO<sub>2</sub> elimination is difficult to match with the rate of CO<sub>2</sub> absorption and production during one lung anaesthesia as minute ventilation may already be maximized. Iatrogenic injury to the contra lateral pleura can result in occult blood loss and a tension pneumothorax on the dependent chest.</p></sec><sec id="sec3-8"><title>Urological procedures</title><p>The principles involved are already described in the general section.</p></sec><sec id="sec3-9"><title>Paediatric surgery</title><p>A left-sided precordial stethoscope placed beforehand monitors for inadvertent right mainstem intubation. Fibreoptic Bronchoscope may be used to verify tube position. In infants, confirming proper endotracheal tube positioning with fluoroscopy may help prevent an airway emergency.[<xref ref-type="bibr" rid="CIT38">38</xref>]</p></sec></sec></sec><sec sec-type="" id="sec1-5"><title>THE SCENERIO OF ROBOT ASISTED SURGERY IN INDIA</title><p>In our country the availability of surgical Robot is limited to only a couple of centers. The costs of the machine as well as the operative cost are the main deterrents to its popularity. Escorts Heart Institute and Research Centre was the first institute in India to acquire a surgical robot (da Vinci surgical system).[<xref ref-type="bibr" rid="CIT39">39</xref>] In India the first robotic urology surgery was performed in April, 2005[<xref ref-type="bibr" rid="CIT40">40</xref>] and first robotic thoracic surgery (thoracoscopic thymectomy) in 2008. Recently, CARE Foundation in collaboration with Indian Institute of Information Technology (IIIT) Hyderabad has undertaken the task of developing indigenous robotic surgical systems. It is envisaged that such systems would be required at large numbers in India in the near future.[<xref ref-type="bibr" rid="CIT41">41</xref>]</p></sec><sec sec-type="" id="sec1-6"><title>THE FUTURE BELONGS TO ROBOTIC SURGERY: WHY NOT BE A PART OF THE CHANGE!</title><p>Robotic surgery is a new and exciting tool that is beginning to see adoption in our mind. We have already entered a new era of practical robotics that will one day rewrite the final frontier of surgical challenges. As anaesthesiologists, we need to be aware of this fast-changing field and how it affects anaesthetic techniques and their delivery. The future of robotic surgery is nearly as promising as the human will to invent better ways of accomplishing delicate medical procedures. The separation of patient from human contact during surgery, may herald the era of ’no infection, no antibiotic’. Recently, the da Vinci Surgical System has been cleared by the FDA for TORS procedures to treat oropharyngeal tumors in adults.[<xref ref-type="bibr" rid="CIT42">42</xref>] Further advances in ‘motion gating technology’ will one day improve surgery on mobile structures, such as the beating heart by creating an image in virtual stillness.[<xref ref-type="bibr" rid="CIT1">1</xref>] It is hypothesized that the surgical robots might one day replace human surgeons in most if not all the surgical procedures. But, are we Anaesthesiologists immune to this possibility? The answer is ‘perhaps not’. A group of researchers at Montreal’s McGill University have invented an anaesthesia robot called “McSleepy” that can act like an anaesthesiologist, analyze biological information and constantly adapts its own behaviour and even recognizes monitoring malfunction.[<xref ref-type="bibr" rid="CIT43">43</xref>] Such is the progress of Medical Robotics.</p></sec></body><back><fn-group><fn fn-type="supported-by"><p><bold>Source of Support:</bold> Nil</p></fn><fn fn-type="conflict"><p><bold>Conflict of Interest:</bold> None declared.</p></fn></fn-group><ref-list><title>REFERENCES</title><ref id="CIT1"><label>1</label><element-citation publication-type="journal"><person-group person-group-type="author"><name><surname>Satava</surname><given-names>R</given-names></name><name><surname>Richard</surname><given-names>M</given-names></name></person-group><article-title>Surgical robotics: The early chronicles: A personal historical perspective</article-title><source>Surg Laparosc Endosc Percutan Tech</source><year>2002</year><volume>12</volume><fpage>6</fpage><lpage>16</lpage><pub-id pub-id-type="pmid">12008765</pub-id></element-citation></ref><ref id="CIT2"><label>2</label><element-citation publication-type="journal"><person-group person-group-type="author"><name><surname>Weisbin</surname><given-names>CR</given-names></name><name><surname>Montemerlo</surname><given-names>MD</given-names></name></person-group><article-title>NASA’s Telerobotic research program</article-title><source>Appl Intell</source><year>1992</year><volume>2</volume><fpage>113</fpage><lpage>25</lpage></element-citation></ref><ref id="CIT3"><label>3</label><element-citation publication-type="book"><person-group person-group-type="author"><name><surname>Martin</surname><given-names>HL</given-names></name><name><surname>Kuban</surname><given-names>DP</given-names></name></person-group><person-group person-group-type="editor"><name><surname>Kuban</surname><given-names>DP</given-names></name></person-group><source>Teleoperated Robotics in Hostile Environments. 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