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1.
Anesth Analg ; 138(5): 1052-1062, 2024 May 01.
Article in English | MEDLINE | ID: mdl-38416594

ABSTRACT

BACKGROUND: Robotic technique of surgery allows surgeons to perform complex procedures in difficult-to-access areas of the abdominal/pelvic cavity (eg, radical prostatectomy and radical hysterectomy) with improved access and precision approach. At the same time, automated techniques efficiently deliver propofol total intravenous anesthesia (TIVA) with lower anesthetic consumption. As both above are likely to bring benefit to the patients, it is imperative to explore their effect on postanesthesia recovery. Quality of Recovery-15 (QoR-15) is a comprehensive patient-reported measure of the quality of postanesthesia recovery and assesses compendious patients' experiences (physical and mental well-being). This randomized study assessed the effect of automated propofol TIVA versus inhaled desflurane anesthesia on postoperative quality of recovery using the QoR-15 questionnaire in patients undergoing elective robotic surgery. METHODS: One hundred twenty patients undergoing robotic abdominal surgery under general anesthesia (GA) were randomly allocated to receive propofol TIVA administered by closed-loop anesthesia delivery system (CLADS) (CLADS group) or desflurane GA (desflurane group). Postoperative QoR-15 score on postoperative day 1 (POD-1) and postoperative day 2 (POD-2) (primary outcome variables), individual QoR-15 item scores (15 nos.), intraoperative hemodynamics (heart rate, mean blood pressure), anesthesia depth consistency, anesthesia delivery system performance, early recovery from anesthesia (time-to-eye-opening, and time to tracheal extubation), and postoperative adverse events (sedation, postoperative nausea and vomiting [PONV], pain, intraoperative awareness recall) (secondary outcome variables) were analyzed. RESULTS: On POD-1, the CLADS group scored significantly higher than the desflurane group in terms of "overall" QoR-15 score (QoR-15 score: 114.5 ± 13 vs 102.1 ± 20.4; P = .001) and 3 individual QoR-15 "items" scores ("feeling rested" 7.5 ± 1.9 vs 6.4 ± 2.2, P = .007; "good sleep" 7.8 ± 1.9 vs 6.6 ± 2.7, P = .027; and "feeling comfortable and in control" 8.1 ± 1.7 vs 6.9 ± 2.4, P = .006). On the POD-2, the CLADS group significantly outscored the desflurane group with respect to the "overall" QoR-15 score (126.0 ± 13.6 vs 116.3 ± 20.3; P = .011) and on "5" individual QoR-15 items ("feeling rested" 8.1 ± 1.4 vs 7.0 ± 2.0, P = .003; "able to return to work or usual home activities" 6.0 ± 2.2 vs 4.6 ± 2.6, P = .008; "feeling comfortable and in control" 8.6 ± 1.2 vs 7.7 ± 1.9, P = .004; "feeling of general well-being" 7.8 ± 1.6 vs 6.9 ± 2.0, P = .042; and "severe pain" 9.0 ± 1.9 vs 8.1 ± 2.5, P = .042). CONCLUSIONS: Automated propofol TIVA administered by CLADS is superior to desflurane inhalation GA with respect to early postoperative recovery as comprehensively assessed on the QoR-15 scoring system. The effect of combined automated precision anesthesia and surgery (robotics) techniques on postoperative recovery may be explored further.


Subject(s)
Anesthetics, Inhalation , Propofol , Robotic Surgical Procedures , Female , Humans , Male , Anesthesia Recovery Period , Anesthesia, General/adverse effects , Anesthesia, General/methods , Anesthetics, Inhalation/adverse effects , Desflurane/adverse effects , Pain/etiology , Propofol/adverse effects , Robotic Surgical Procedures/adverse effects
2.
Indian J Anaesth ; 67(6): 548-555, 2023 Jun.
Article in English | MEDLINE | ID: mdl-37476448

ABSTRACT

The primary objective of postgraduate medical education is to produce specialists who provide highest quality of health care to suffering patients and return them to the community in the most functional capability. The secondary objective is to advance the cause of science through research and training. A postgraduate, after undergoing the required training in anaesthesiology, should be able to recognise the health needs of the community and apply cognitive and psychomotor skills to provide optimal anaesthetic care. Additionally, the anaesthesiologist should function as a perioperative physician being adept in perioperative care, pain medicine and critical care medicine. The 3-year postgraduate curriculum comprises experience in basic, subspeciality and advanced anaesthesia training. This structured training programme with a curriculum of increasing difficulty and learning incorporates ascending grades of difficulty, posing a challenge to the trainee's intellect and technical skills. Experience in basic anaesthesia training is aimed to lay stress on basic and fundamental aspects of anaesthetic management. Subspeciality anaesthesia training is needed to lay stress on the theory, special considerations and practice of subdisciplines of anaesthesiology. This document proposes a modular-structured, continuous, objectively evaluated, systematic training process that is monitored frequently and periodically, such that the trainee, at the end of training, is capable of appropriate anaesthetic management of disease conditions in a wide variety of situations.

3.
Asian J Anesthesiol ; 61(2): 61-70, 2023 06 01.
Article in English | MEDLINE | ID: mdl-37386923

ABSTRACT

INTRODUCTION: Precision general anesthesia (GA) techniques that minimize the presence of residual anesthetic and facilitate recovery, are desirable in patients with morbid obesity. Automated administration of propofol total intravenous anesthesia (TIVA), which facilitates precision propofol delivery by factoring in continuous patient input variable (bispectral index) to establish a closed feedback loop system, may help mitigate concerns related to propofol's lipid solubility and adverse accumulation kinetics in patients with morbid obesity. This randomized study evaluated the recovery of patients with morbid obesity undergoing bariatric surgery under propofol TIVA automated by a closed-loop anesthesia delivery system (CLADS) versus desflurane GA. METHODS: Forty patients, randomly allocated to receive propofol TIVA (CLADS group) or desflurane GA (desflurane group), were evaluated for postoperative recovery (early and intermediate) (primary objective); they were evaluated for intraoperative hemodynamics, anesthesia depth consistency, anesthesia delivery performance characteristics, patient satisfaction, and incidence of adverse events (sedation, pain, postoperative nausea, and vomiting) (secondary objective). RESULTS: No difference was found for the time-to-eye-opening (CLADS group: 4.7 [3.0, 6.7] min vs. desflurane group: 5.6 [4.0, 6.9] min, P = 0.576), time-to-tracheal-extubation (CLADS group: 6.7 [4.7, 9.3] min vs. desflurane group: 7.0 [5.8, 9.2] min, P = 0.528), ability-to-shift score from operating room table to the transport bed (CLADS group: 3 [3.0, 3.5] vs. desflurane group: 3 [3.0, 4.0], P = 0.703), and time to achieve a modified Aldrete score 9/10 (CLADS group: 15 [15.0, 37.5] min vs. desflurane group: 15 [15.0, 43.7] min, P = 0.867). CONCLUSION: Automated propofol TIVA as administered by CLADS, which matched desflurane GA with respect to depth of anesthesia consistency and postanesthesia recovery profile, can be explored further as an alternative anesthesia technique in patients with morbid obesity.


Subject(s)
Anesthetics, Inhalation , Bariatric Surgery , Obesity, Morbid , Propofol , Humans , Anesthesia, Inhalation , Anesthesia, Intravenous/adverse effects , Anesthesia, Intravenous/methods , Anesthetics, Inhalation/adverse effects , Anesthetics, Intravenous/adverse effects , Desflurane , Obesity, Morbid/surgery , Obesity, Morbid/etiology , Postoperative Nausea and Vomiting/epidemiology
4.
Indian J Anaesth ; 67(5): 476-478, 2023 May.
Article in English | MEDLINE | ID: mdl-37333707
5.
Asian J Anesthesiol ; 61(4): 153-160, 2023 Dec 01.
Article in English | MEDLINE | ID: mdl-38695065

ABSTRACT

INTRODUCTION: Deep neuromuscular blockade (d-NMB) is an essential requirement for carboperitoneum during laparoscopy surgery. However, sustaining d-NMB till the completion of surgery delays the reversal of the residual block. Therefore, there is a merit in exploring the effect of synergistic vecuronium-atracurium combination on the duration-of-action of d-NMB during "laparoscopic" surgery when we compare intubating bolus non-depolarizers (atracurium, vecuronium) administered alone. This study aims to evaluate whether the synergistic effect atracurium-vecuronium combination increases duration-of-action of d-NMB "laparoscopic" surgery settings. METHODS: Forty-eight patients (18-60 years, American Society of Anesthesiologists physical status- II/III, either sex) undergoing laparoscopic cholecystectomy were randomly allocated to receive vecuronium (vecuronium group, n = 16) or atracurium (atracurium group, n = 16) or vecuroniumatr-acurium combination (vecuronium-atracurium combination group, n = 16) and analyzed for the effects on the duration-of-action (primary objective); onset-of-action, reversibility, and quality of intubating conditions (secondary objectives) profile of neuromuscular blockade in patients undergoing laparoscopic cholecystectomy. RESULTS: Duration-of-action of neuromuscular blockade was significantly longer in patients who received atracurium-vecuronium combination (53.9 ± 9.7 minutes) versus atracurium-alone (41.1 ± 3.8 minutes) or vecuronium-alone (43.5 ± 9.2 minutes) (P = 0.000). No difference was found for the time to onset-of-action (vecuronium [198.1 ± 34.9 seconds], atracurium [188.5 ± 50.6 seconds], or atracurium-vecuronium combination [196.3 ± 46.3 seconds] [P = 0.829]); time for the reversal of muscle relaxation effect (vecuronium [559.9 ± 216.2 seconds], atracurium [584.7 ± 258.3 seconds], and atracurium-vecuronium combination [555.0 ± 205.4 seconds] [P = 0.925]); and quality-of-intubating conditions (vecuronium group [9.6 ± 1.3]; atracurium group [10.0 ± 0.0]; atracurium-vecuronium group [10.0 ± 0.0] [P = 0.182]). CONCLUSION: The synergistic effect of the atracurium-vecuronium combination leads to an increased duration-of-action of d-NMB during laparoscopic cholecystectomy without impacting onset-of-action, quality of intubating conditions, and reversal of muscle relaxant effect.


Subject(s)
Atracurium , Laparoscopy , Neuromuscular Blockade , Neuromuscular Nondepolarizing Agents , Vecuronium Bromide , Humans , Atracurium/pharmacology , Male , Female , Vecuronium Bromide/pharmacology , Adult , Middle Aged , Neuromuscular Nondepolarizing Agents/administration & dosage , Neuromuscular Nondepolarizing Agents/pharmacology , Neuromuscular Blockade/methods , Laparoscopy/methods , Young Adult , Adolescent , Cholecystectomy, Laparoscopic , Drug Therapy, Combination , Drug Synergism
6.
J Anaesthesiol Clin Pharmacol ; 38(2): 221-227, 2022.
Article in English | MEDLINE | ID: mdl-36171925

ABSTRACT

Background and Aims: The LMA® ProSeal™, LMA® Supreme™ and Ambu® AuraGain™ are second-generation supraglottic airway devices (SADs) with integrated gastric access. In this study, we compared the clinical performance of these three devices in adults for controlled ventilation in anesthetized paralysed patients. Material and Methods: Two hundred and seventy adults, American Society of Anesthesiologists (ASA) Physical Status I-III, undergoing elective surgical procedures, were randomized into three groups with 90 patients in each: Group 1: LMA® ProSeal™, Group 2: LMA® Supreme™ and Group 3: Ambu® AuraGain™. All the three devices were evaluated for oropharyngeal seal pressure (OSP) and other parameters: ease and the number of attempts at device placement, fibreoptic laryngeal view and intraoperative and postoperative complications. Results: In the present study, the mean OSP was 38.9 ± 3.050 cm H2O in the LMA ProSeal™ group, 37.41 ± 4.097 cm H2O in LMA® Supreme™ group and 37.32 ± 3.740 cm H2O in Ambu® AuraGain™ group. The difference was found to be statistically significant (P = 0.006). The three groups were comparable for the ease of device insertion, number of attempts at device placement, fibreoptic laryngeal view, intraoperative and postoperative complications. Conclusion: In this study, we found that the LMA® ProSeal™ provided the highest OSP in comparison to the other two devices, even though this difference is not clinically relevant. The use of Ambu® AuraGain™ was associated with difficult and lowest first-time insertion success rate (P < 0.001) along with an increased incidence of airway trauma as compared to the other two SADs.

7.
J Anaesthesiol Clin Pharmacol ; 38(1): 48-57, 2022.
Article in English | MEDLINE | ID: mdl-35706632

ABSTRACT

Tracheal resection anastomosis is one of the most challenging surgeries. Notable advances in this field have made possible a variety of surgical, anesthetic, and airway management options. There are reports of newer approaches ranging from use of supraglottic airway devices, regional anesthesia, and extracorporeal support. Endotracheal intubation with cross-field ventilation and jet ventilation are the standard techniques for airway management followed. These call for multidisciplinary preoperative planning and close communication during surgery and recovery. This review highlights the anesthetic challenges faced during tracheal resection and anastomosis with specific considerations to preoperative workup, classification of tracheal stenosis, airway management, ventilation strategies, and extubation. The newer advances proposed have been reviewed.

8.
Asian J Endosc Surg ; 15(4): 765-773, 2022 Oct.
Article in English | MEDLINE | ID: mdl-35641878

ABSTRACT

INTRODUCTION: The focus on enhanced recovery after surgery (ERAS) and opioid-free anesthesia has renewed interest in use of lignocaine. We evaluated postoperative pain relief following intravenous (IV) lignocaine administration in patients undergoing laparoscopic intraperitoneal onlay mesh repair (IPOM). METHODS: Seventy patients were randomized into two groups. Group L patients were administered IV lignocaine infusion (1.5 mg/kg) at induction of anesthesia followed by infusion (1.5 mg/kg/h), until 1 hour in the post-anesthesia care unit (PACU). Group P patients received equal volumes of normal saline IV infusion. We recorded hemodynamics, perioperative analgesic consumption, postoperative visual analog scores (VAS), incidence of postoperative nausea and vomiting (PONV), bowel function, patient satisfaction and length of hospital stay (LOS). RESULTS: The hemodynamics in both groups were maintained. Group L had lower VAS scores as compared to Group P (P < .05). Intraoperative fentanyl consumption in Group L was significantly less than Group P (P = .029). Group L patients scored lower on the Likert scale in comparison to the patients of Group P at 0 hour (P = .013). Recovery of bowel function as assessed by time to pass first flatus was significantly shortened by IV lignocaine (P = .001). The perioperative administration of IV lignocaine resulted in decreased postoperative analgesic requirement and greater patient satisfaction scores. CONCLUSIONS: Perioperative IV lignocaine infusion provided good pain relief, hemodynamic stability and decreased perioperative analgesic consumption. PONV incidence decreased along with an early return of bowel function, reduced LOS and improved patient satisfaction in patients undergoing laparoscopic IPOM surgery.


Subject(s)
Laparoscopy , Lidocaine , Analgesics , Double-Blind Method , Fentanyl , Humans , Pain Measurement , Pain, Postoperative/drug therapy , Pain, Postoperative/prevention & control , Postoperative Nausea and Vomiting/prevention & control , Saline Solution , Surgical Mesh
9.
Indian J Anaesth ; 65(1): 6-11, 2021 Jan.
Article in English | MEDLINE | ID: mdl-33767496

ABSTRACT

The growth in anaesthesia speciality has been contemporaneous with the advancement in surgical techniques. Although various anaesthesia subspecialities have developed over the years, the value of a general speciality anaesthesiologist cannot be undermined as skills and techniques acquired during basic anaesthesia training are major determinants of efficiency of an anaesthesiologist. A general speciality anaesthesiologist performs multiple roles: that of a perioperative physician, intensivist and acute pain management expert. Anaesthesia also offers a multitude of avenues in teaching and research. A successful anaesthesiologist not only requires having good clinical skills but also needs to adhere to basic medical ethics principles. Anaesthesiologists have also been in the forefront in the management of the current COVID pandemic.

10.
J Cardiothorac Vasc Anesth ; 35(4): 1089-1095, 2021 Apr.
Article in English | MEDLINE | ID: mdl-33036887

ABSTRACT

OBJECTIVE: Automated propofol total intravenous anesthesia (TIVA) administered by a closed-loop anesthesia delivery system (CLADS) exhibits greater efficiency than conventional manual methods, but its use in major thoracic surgery is limited. DESIGN: Prospective, single-blind, randomized controlled study. SETTING: Single-center tertiary care hospital. PARTICIPANTS: Patients undergoing thoracic surgery. INTERVENTIONS: Patients were randomly allocated to receive CLADS-driven (CLADS group) or manually controlled (manual group) propofol TIVA. MEASUREMENTS AND MAIN RESULTS: Anesthesia depth consistency (primary objective) and anesthesia delivery performance, propofol usage, work ergonomics, intraoperative hemodynamics, and recovery profile (secondary objectives) were analyzed. No differences were found for anesthesia depth consistency (percentage of time the bispectral index was within ± 10 of target) (CLADS group: 82.5% [78.5%-87.2%] v manual group: 86.5% [74.2%-92.5%]; p = 0.581) and delivery performance, including median performance error (CLADS group: 3 [-4 to 6] v manual group: 1 [-2.5 to 6]); median absolute performance error (CLADS group: 10 [10-12] v manual group:10 [8-12]); wobble (CLADS group: 10 [8-12] v manual group: 9 [6-10.5]); and global score (CLADS group: 24.2 [21.2-29.3] v manual group: 22.1 [17.3-32.3]) (p > 0.05). However, propofol requirements were significantly lower in the CLADS group for induction (CLADS group: 1.27 ± 0.21] mg/kg v manual group: 1.78 ± 0.51 mg/kg; p = 0.014) and maintenance (CLADS group: 4.02 ± 0.99 mg/kg/h v manual group: 5.11 ± 1.40 mg/kg/h; p = 0.025) of TIVA. Ergonomically, CLADS-driven TIVA was found to be significantly superior to manual control (infusion adjustment frequency/h) (manual infusion: 9.6 [7.8-14.9] v CLADS delivery [none]). CONCLUSIONS: In thoracic surgery patients, CLADS-automated propofol TIVA confers significant ergonomic advantage along with lower propofol usage.


Subject(s)
Propofol , Thoracic Surgery , Anesthesia, Intravenous , Anesthetics, Intravenous , Humans , Prospective Studies , Single-Blind Method
11.
Indian J Anaesth ; 64(Suppl 3): S186-S192, 2020 Aug.
Article in English | MEDLINE | ID: mdl-33162600

ABSTRACT

BACKGROUND AND AIMS: Videolaryngoscopes are crucial components of a difficult airway cart. Issues of cost and availability, however, remain a problem. We compared the combination of an endoscope used in conjunction with the Macintosh laryngoscope with established videolaryngoscopes and the Macintosh laryngoscope using the intubation difficulty scale (IDS) score. MATERIALS AND METHODS: A prospective randomised study including 120 adult patients, American Society of Anaesthesiologists (ASA) physical status I-III, with an anticipated difficult airway scheduled for elective surgery were randomly allocated to one of four groups: Truview EVO2 (group 1), C-MAC D Blade (group 2), videoendoscope (group 3), or Macintosh laryngoscope (group 4). The IDS score was the primary outcome. Secondary outcomes included the Cormack-Lehane grade, time to tracheal intubation, haemodynamic responses, and adverse events. RESULTS: A significant proportion of patients in groups 2 and 3 had an IDS score of zero (73.3 and 70%, respectively). IDS scores were significantly lower in the C-MAC D blade and videoendoscope groups attributable to differences in parameters N4, N5 and N6 [C/L grades, lifting force and laryngeal pressure required] (P < 0.001). The C-MAC D blade and the Macintosh laryngoscope required less time for intubation as compared to the Truview EVO2 and videoendoscope. No differences were noted in post-intubation haemodynamic parameters and other adverse events. CONCLUSION: The performance of videoendoscope was comparable to C-MAC D Blade and superior to Truview EVO2 and Macintosh laryngoscope with respect to the IDS score and may thereby provide an effective alternative to commercial videolaryngoscopes in low resource settings.

13.
Minerva Anestesiol ; 86(9): 913-921, 2020 09.
Article in English | MEDLINE | ID: mdl-32538577

ABSTRACT

BACKGROUND: The passage of tube across the glottis-inlet being the significant "active" component of intubation, associating postoperative sore throat (POST) with "passive" presence of high-volume low-pressure tracheal-tube cuff is unjustified. Tracheal-tube introducers (TTI), commonly employed to facilitate tracheal intubation during difficult airway management, can influence intubation quality and decrease incidence of POST. METHODS: Four hundred and fifty patients undergoing laparoscopic/open surgery were randomly allocated to receive conventional intubation (non-TTI group, N.=150) or intubation facilitated with rigid-TTI (rigid-TTI group, N.=150) or non-rigid TTI (non-rigid TTI group, N.=150). This study analyzed effects of conventional versus TTI-guided intubation on reducing the incidence of POST (primary objective); intubation profile (time, attempts, response), and complications (trauma, inspiratory stridor) (secondary objectives). RESULTS: Four hundred and twenty patients completed the study. The incidence of POST was lowest in patients of rigid-TTI group (N.=40, 29.0%); which was significantly lower than the non-TTI group (N.=64, 45.1%) (P=0.005) but comparable to the non-Rigid-TTI group (N.=53, 37.9%, P=0.117). In addition, the incidence of POST in rigid-TTI group was significantly lower than those in the non-TTI group at 2-hour (rigid-TTI group: N.=19, 13.8%; non-TTI group: N.=41, 28.9%, P=0.002) and 4-hour (rigid-TTI group: N.=23, 16.7%; non-TTI group: N.=43, 30.3%, P=0.007) time points. No difference was found in the incidence of airway management related morbidity, including, laryngospasm and inspiratory stridor in the three groups. CONCLUSIONS: Rigid-TTI by its ability to positively modify friction dynamics between glottis-inlet and the passing tracheal-tube; has the potential to improve quality of intubation and decrease the incidence of POST.


Subject(s)
Intubation, Intratracheal , Pharyngitis , Airway Management , Glottis , Humans , Pharyngitis/epidemiology , Pharyngitis/etiology , Pharyngitis/prevention & control , Postoperative Period
18.
Indian J Anaesth ; 63(8): 653-659, 2019 Aug.
Article in English | MEDLINE | ID: mdl-31462812

ABSTRACT

BACKGROUND AND AIMS: Fentanyl can facilitate controlled intraoperative hypotension by its sympatholytic effect in patients undergoing functional endoscopic sinus surgery (FESS). We investigated the effects of different doses of pre-induction fentanyl on controlled hypotension profile during FESS. METHODS: This prospective, randomised study included 120 patients randomly allocated to three groups (40 each) based on administration of pre-induction fentanyl; 2 µg/kg group, 3 µg/kg group and 4 µg/kg group. The primary objective was to assess effect on intraoperative heart rate and mean arterial pressure. Use of additional hypotensive agents, surgical field condition and surgeon satisfaction were also analysed. RESULTS: Controlled hypotension was achieved adequately in all participants. Patients belonging to fentanyl 4 µg/kg group had significantly lower heart rate for the duration of controlled hypotension intraoperatively versus fentanyl 2 µg/kg group (P < 0.05). Trinitroglycerin [TNG] and metoprolol were administered to 3 [7.5%] and 9 [22.5%] patients respectively in the fentanyl 3 µg/kg group, and to 3 [7.5%] and 5 [12.5%] patients respectively in the 4 µg/kg group, compared to 14 [35%] and 20 [50%] in the fentanyl 2 µg/kg group, respectively (TNG, P < 0.001). Surgical field conditions and surgeon satisfaction scores were significantly superior in fentanyl 3 µg/kg and 4 µg/kg groups than in fentanyl 2 µg/kg group. CONCLUSION: Pre-induction fentanyl 3 µg/kg and 4 µg/kg group showed superior controlled hypotension facilitation than 2 µg/kg fentanyl during FESS in terms of measurable haemodynamic endpoints and favourable operative conditions, surgeon's satisfaction and sparing of additional hypotensive agents.

19.
Indian J Anaesth ; 63(3): 225-230, 2019 Mar.
Article in English | MEDLINE | ID: mdl-30988538

ABSTRACT

BACKGROUND AND AIMS: Reduced inhalational anaesthetic requirement in end-stage liver disease during living donor orthotopic liver transplantation (LD-OLT) is due to increased endogenous opioids. This study evaluated the changes in bi-spectral index (BIS) monitored end-tidal desflurane (ETDes) requirements during 'dissection', 'anhepatic', and 'neohepatic' phases of LD-OLT. METHODS: This prospective, cohort study included 40 adults undergoing LD-OLT under general anaesthesia (GA). All patients received BIS-guided desflurane GA. ETDes requirements in three phases of LD-OLT (primary objective); relationship between inhalational anaesthetic requirements and severity of liver disease; and effect of changes in mean arterial pressure (MAP) and body temperature on ETDes concentration for all three phases were also evaluated. RESULTS: ETDes during the 'dissection' phase (2.92 ± 0.65%) was > 'anhepatic' (2.68 ± 0.85%, P = 0.049) and 'neohepatic' phases (2.58 ± 0.71%, P = 0.005). Patients with model of end-stage liver disease (MELD) score < 20 returned significantly greater ETDes than those with MELD score ≥20 during the 'dissection' (MELD <20: 3.11 ± 0.49%; MELD ≥20: 2.58 ± 0.77%, P = 0.01) and 'anhepatic'(MELD <20: 2.96 ± 0.76%; MELD ≥20: 2.17 ± 0.79%, P = 0.003) phases. A positive correlation was observed between ETDes(r = 0.584, P = 0.001) and temperature in the 'dissection' phase only. CONCLUSION: In patients undergoing LD-OLT, BIS monitoring guidance of depth of desflurane GA suggests lower desflurane requirements during 'anhepatic' and the 'neohepatic' phase of surgery. Also, the desflurane requirement is greater in patients with lesser severity of liver disease.

20.
Anesth Essays Res ; 13(1): 126-131, 2019.
Article in English | MEDLINE | ID: mdl-31031492

ABSTRACT

INTRODUCTION: Ventral hernia is a commonly performed surgical procedure in adults. Laparoscopic intraperitoneal onlay mesh repair (IPOM) of ventral hernia is procedure of choice. IPOM of ventral hernia is associated with significant pain. Hence, our aim was to study the efficacy of instilling preemptive local analgesia for reducing postoperative pain in patients undergoing laparoscopic ventral hernia repairs. OBJECTIVE: To study the role of local infiltration of 10 ml of 0.5% ropivacaine in the anterior abdominal wall preoperatively to improve pain scores compared to conventional intravenous systemic analgesia. MATERIALS AND METHODS: The study pool consists of two groups of patients (25 in each group) admitted for laparoscopic uncomplicated ventral hernia repair. Analysis was performed by the SPSS program (Company - International Business Machines Corporation, headquartered at Armonk, New York, USA) for Windows, version 17.0. Normally distributed continuous variables were compared using ANOVA. Categorical variables were analyzed using the Chi-square test. RESULTS: Both groups were matching in terms of demographic features. Postoperatively, pain assessment was performed every 30 min for the first 2 h and was followed up for a period of 24 h at intervals (4, 6, 12, and 24 h). Postoperatively, patients were also assessed for time of ambulation, time of return of bowel sounds at 6, 12, and 24 h, and length of hospital stay. Side effects and complication were noted. CONCLUSION: Our study demonstrated that supplementing US-guided transversus abdominis plane (TAP) block to conventional systemic analgesics resulted in decreased VAS scores and decreased requirement of rescue analgesics. The patients ambulated early had earlier appearance of bowel sounds and decreased length of hospital stay. There was also decreased incidence of nausea and vomiting. TAP block for laparoscopic IPOM surgery significantly decreases postoperative pain and opioid requirement in patients.

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