Effect of sevoflurane, propofol and propofol with dexmedetomidine as maintenance agent on intracranial pressure in the Trendelenburg position during laparoscopic surgeries

Background and Aim

Pneumoperitoneum (PP) and the Trendelenburg position (TP) in laparoscopic surgeries are associated with rise in intracranial pressure (ICP). The optic nerve sheath diameter (ONSD) is a surrogate marker of ICP. The study aimed to evaluate the effect of sevoflurane, propofol and propofol with dexmedetomidine as maintenance agent on ICP in TP during laparoscopic surgeries.

Material and Methods

A total of 120 American Society of Anesthesiologists (ASA) physical status I/II patients, aged 18-65 years were randomly allocated into three groups: sevoflurane as group S, propofol as group P, and propofol with dexmedetomidine as group PD. The intra-abdominal pressure (IAP) was kept in the range of 12-14 mmHg and TP varied between 15°- 45° angle. The primary objective was comparison of ICP and secondary objectives were IOP, intraoperative hemodynamic and postoperative recovery characteristics among groups. The ONSD and IOP were measured in both eyes 10 min after endotracheal intubation (T0), 5 min after CO2 insufflation (T1), 5 min after TP (T2) and 5 min after deflation of gas (T3). The data were analyzed by using the Statistical Package for Social Sciences version 23.

Results

ONSD and IOP at T1 and T2 were significantly higher than T0 in all groups, but no significant difference was found among the intergroup groups. Significantly lower heart rate and mean blood pressure were observed in PD group at T1 and T2 compared to group S and group P.

Conclusion

The rise in ICP was comparable among sevoflurane, propofol, and propofol-dexmedetomidine combination as a maintenance agent during laparoscopic surgeries in TP.

Comparison of oropharyngeal leak pressure of I-gelTM and BlockbusterTM laryngeal mask airway in anaesthetized pediatric patients

BACKGROUND

Supraglottic airways (SGA) are increasingly used in pediatric anesthesia.Among SGA, I-gelTM is a commonly used device in pediatric patients. The BlockbusterTM laryngeal mask airway (LMA) is latest addition in pediatric airway armamentarium. This studywas conducted to compare the clinical performance of I-gelTM and BlockbusterTM LMA in pediatric patients.

METHODS

A total of 140 children aged 1-5 years, who were undergoing elective surgery,were randomized into two groups either I-gelTM (Group I) or BlockbusterTM LMA (Group B). Airway was secured with appropriate-sized LMA according to group allocation under generalanesthesia. The primary objective of study was oropharyngeal leak pressures (OPLP), andsecondary objectives were number of attempts of device insertion, success rate, ease ofLMA insertion, hemodynamic parameters, and postoperative pharyngolaryngeal morbidities.

RESULTS

The mean OPLP was significantly higher for I-gelTM compared to BlockbusterTM LMA(27.97 ± 1.65 vs. 26.04 ± 2.12; P < 0.001). The devices were successfully inserted on thefirst attempt in 97.14% and 90% of the Group I and Group B respectively. The insertion time,ease of insertion, hemodynamic parameters and postoperative complications were comparable between groups.

CONCLUSIONS

The I-gelTM was more efficacious device in term of OPLP than BlockbusterTMLMA for positive pressure ventilation in pediatric patients undergoing short surgical procedures under general anesthesia.

Recent advances in paediatric anaesthesia

Recent development in science has led to a significant improvement in safety for the anaesthetic management of children. Enhanced recovery after surgery is one of the novel approaches aiming to enhance paediatric surgical outcomes and their quick recovery. Preoperative counselling, minimal fasting, and no routine pharmacological premedication are critical components of enhanced recovery after surgery. As anaesthetists, management of airway is our priority and introduction of paraoxygenation in addition to preoxygenation has resulted in reduction in desaturation episodes during periods of apnoea. Safe care has been made possible by improvements in monitoring, equipment, medications, techniques, and resuscitation protocols. We are motivated to collect more evidence regarding ongoing disputes and issues, such as the effect of anaesthesia on neurodevelopment.

Comparison of the effects of intravenous lignocaine and ketamine on postoperative pain after lower abdominal surgeries under general anaesthesia

Background and Aims

As a component of multimodal analgesia, the administration of systemic lignocaine and ketamine is a well-known technique. This study was designed to compare the effect of intravenous lignocaine and ketamine on postoperative pain in the patients undergoing lower abdominal surgeries under general anaesthesia.

Methods

Total 126 patients, aged between18 to 60 years, American Society of Anesthesiologists (ASA) physical status I and II, were randomly allocated into lignocaine (Group L), ketamine (Group K), or control (Group C). We assessed the mean fentanyl consumption 24 hours postoperatively, visual analogue score (VAS), time to first rescue analgesia, haemodynamic parameters, postoperative complications patient satisfaction score, and duration of hospital stay among three groups.

Results

The mean fentanyl consumption in first 24 hours postoperatively was higher in group C (194.65 ± 48.48 μg) compared to group L (139.69 ± 46.96 μg) and group K (161.37 ± 46.31 μg) (P < 0.05). The VAS pain scores were lower in group L and group K compared to group C (P < 0.05). The time to first rescue analgesia was prolonged in group L and group K as compared to group C (P < 0.05). The patients were more satisfied in group L and group K as compared to group C (P < 0.05).

Conclusion

The mean fentanyl consumption in 24 hours postoperatively and pain intensity were less with intraoperative lignocaine and ketamine infusion with improved patient satisfaction in patients undergoing lower abdominal surgery under general anaesthesia.

Comparison of nebulized dexmedetomidine and ketamine for premedication in pediatric patients undergoing hernia repair surgery: a randomized comparative trial

Background

Allaying anxiety and providing calm children in the operating room is a challenging task for anesthesiologists. This study was designed to compare the use of nebulized dexmedetomidine and ketamine for premedication in pediatric patients under general anesthesia.

Methods

Seventy patients, aged 2 to 8 years of both sexes, with American Society of Anesthesiologists physical status I/II scheduled for hernia repair surgery under general anesthesia, were randomized to two equal groups using a computer-generated random number table. Patients in group D received dexmedetomidine (2 µg/kg), and patients in group K received ketamine (2 mg/kg) by a jet nebulizer before the induction of anesthesia. The study's primary objective was comparing the level of sedation, which was achieved at 30 min after a study drug administration using the Ramsay sedation scale, between the two groups. The secondary objectives were the two-group comparison of parental separation anxiety scale, acceptance of the mask, hemodynamic variables, recovery time, incidence of emergence agitation, and adverse events.

Results

The median Ramsay sedation scale at 30 min was 3 (1–4) in group D and 3 (1–3) in group K (P = 0.002). Patients in group D had a more acceptable parental separation anxiety scale (P = 0.001) and a satisfactory mask acceptance scale (P = 0.042).

Conclusions

Nebulized dexmedetomidine (2 µg/kg) provided better sedation along with smooth parental separation and satisfactory mask acceptance during induction of anesthesia with a similar emergence agitation profile and adverse reactions compared to nebulized ketamine in pediatric patients.

Real-time ultrasound-guided epidural catheter placement in infants: a case series

Although epidural catheter insertion under ultrasound (US) guidance in the pediatric age group has been reported in the literature, it is yet to be adopted widely in clinical practice. The incomplete fusion of bones in pediatric patients provides an acoustic window for the US. The epidural space in children is at shallow depth, hence a high-frequency probe, which provides better resolution can be used. We present a case series in which real-time US-guided epidural catheter placement was performed in 10 infants in lower thoracic and upper lumbar interspaces. We reiterate that the use of real-time US during epidural catheter placement in patients increases the success rate of epidural catheter placement while decreasing procedural complications.

Comparison of landmark and real-time ultrasound-guided epidural catheter placement in the pediatric population: a prospective randomized comparative trial

Background

Epidural block placement in pediatric patients is technically challenging for anesthesiologists. The use of ultrasound (US) for the placement of an epidural catheter has shown promise. We compared landmark-guided and US-guided lumbar or lower thoracic epidural needle placement in pediatric patients.

Methods

This prospective, randomized, comparative trial involved children aged 1–6 years who underwent abdominal and thoracic surgeries. Forty-five children were randomly divided into two groups using a computer-generated random number table, and group allocation was performed by the sealed opaque method into either landmark-guided (group LT) or real-time ultrasound-guided (group UT) epidural placement. The primary outcome was a comparison of the procedure time (excluding US probe preparation). Secondary outcomes were the number of attempts (re-insertion of the needle), bone contacts, needle redirection, skin-to-epidural distance using the US in both groups, success rate, and complications.

Results

The median (interquartile range) time to reach epidural space was 105.5 (297.0) seconds in group LT and 143.0 (150) seconds in group UT (P = 0.407). While the first attempt success rate was higher in the UT group (87.0% in UT vs. 40.9% in LT; P = 0.004), the number of bone contacts, needle redirections, and procedure-related complications were significantly lower.

Conclusions

The use of US significantly reduced needle redirection, number of attempts, bone contact, and complications. There was no statistically significant difference in the time to access the epidural space between the US and landmark technique groups.

Use of rotational thromboelastometry to predict the outcome of COVID-19 patients: A retrospective observational study

Background and Aims:

Material and Methods:

Results:

Conclusion:

Comparison of analgesic efficacy of intrathecal 1% 2-chloroprocaine with or without fentanyl in elective caesarean section: A prospective, double-blind, randomised study

Background and Aims:

Preservative free 1% 2-chlorprocaine is a short acting local anaesthetic agent suitable for day care surgical procedures. Potentiation of analgesic action of intrathecal local anaesthetics by the addition of opioids is well known. In this study, we investigated the effect of intrathecal fentanyl as an adjuvant to 1% 2-chloroprocaine (2-CP) in parturients undergoing elective lower segment caesarean section (LSCS).

Methods:

This prospective randomised comparative study was performed on 150 healthy, term parturients planned for elective low risk LSCS, divided into two equal groups. The group CS received 1% preservative-free 2-CP 3 ml (30 mg) + 0.5 ml normal saline and group CF received 1% preservative-free 2-CP 3 ml (30 mg) + 0.5 ml fentanyl (25 μg) with a total volume of 3.5 ml intrathecally in both groups. The duration of sensory blockade, duration of motor blockade, maximum height of sensory block, haemodynamic parameters, quality of block, neonatal outcome, patient satisfaction and any side effects were recorded.

Results:

There were no significant differences in demographic characteristics, haemodynamic parameters, onset of sensory block, onset of motor block and duration of motor block between the groups. The duration of sensory block and duration of analgesia was statistically prolonged in group CF than group CS (P value < 0.0001). There was no statistical difference in the Apgar score of newborns in both groups. The adverse effects (hypotension, bradycardia, nausea/vomiting, shivering and transient neurological symptoms) were comparable in both the groups.

Conclusion:

The addition of fentanyl to 1% 2-chloroprocaine intrathecally prolonged the duration of sensory block and postoperative analgesia in patients undergoing LSCS.

COVID-19 pandemic: Psychological impact on anaesthesiologists

Background and Aim:

The anaesthesiologists are at the highest risk of contracting infection of coronavirus disease 2019 (COVID-19) in emergency room, operation theatres and intensive care units. This overwhelming situation can make them prone for psychological stress leading to anxiety and insomnia.

MATERIALS AND METHODS

We did an online self-administered questionnaire-based observational cross-sectional study amongst anaesthesiologists across India. The objectives were to find out the main causes for anxiety and insomnia in COVID-19 pandemic. Generalised Anxiety Disorder-7 (GAD-7) scale and Insomnia Severity Index (ISI) were used for assessing anxiety and insomnia.

Results:

Of 512 participants, 74.2% suffered from anxiety and 60.5% suffered from insomnia. The age <35 years, female sex, being married, resident doctors, fear of infection to self or family, fear of salary deductions, increase in working hours, loneliness due to isolation, food and accommodation issues and posting in COVID-19 duty were risk factors for anxiety. ISI scores ≥8 was observed in <35 years, unmarried, those with stress because of COVID-19, fear of loneliness, issues of food and accommodation, increased working hours and with GAD-7 score ≥5. Adjusted odd's ratio of insomnia in participants having GAD-7 score ≥5 was 10.499 (95% confidence interval 6.097–18.080; P < 0.001).

Conclusion:

The majority of anaesthesiologists on COVID-19 duty suffer from anxiety and insomnia. Addressing risk factors identified during this study with targeted interventions and psychosocial support will help them to cope better with the stress.

Analgesic sparing effect of dexamethasone with levobupivacaine in quadratus lumborum block in patients undergoing unilateral inguinal hernia repair: A prospective randomised controlled trial

Background

Quadratus lumborum block (QLB) provides somatic and visceral analgesia to the lower thoracic and abdominal wall. The aim was to investigate the analgesic effect of dexamethasone with levobupivacaine in QLB in patients undergoing unilateral inguinal hernia repair surgery.

Methods

A total of 90 patients of American Society of Anaesthesiologists (ASA) I/II were randomly divided into two groups. Group L received 0.25% levobupivacaine (20 ml) + normal saline (1 ml) and group D received 0.25% levobupivacaine (20 ml) + 4 mg dexamethasone (1 ml) in QL plane on the operated side using ultrasound, after completion of surgery under spinal anaesthesia. The primary objective was to compare time for first rescue analgesia. The secondary objectives were total rescue analgesic consumption and numeric rating scale (NRS) in the first 24 h.

Results

The demographic data age, sex, height, weight and ASA were comparable in both groups. The mean time to request for first rescue analgesia was longer in group D compared to group L (1016.02 ± 205.97 min versus 640 ± 132.96 min; P < 0.0001). The mean total tramadol consumption in the first 24 h was lower in group D compared to group L (233.55 ± 86.92 mg versus 328.22 ± 78.74 mg; P < 0.0001). Patients in group D had significantly lower NRS scores at rest and on movement as compared to group L.

Conclusions

The addition of dexamethasone to levobupivacaine in QLB results in prolonged duration of postoperative analgesia, less rescue analgesic requirements and better quality of analgesia as compared to levobupivacaine in unilateral inguinal hernia repair surgery.

Effect of dexmedetomidine on attenuation of hemodynamic response to intubation, skin incision, and sternotomy in coronary artery bypass graft patients: A double-blind randomized control trial

Background and Aims:

Coronary artery bypass grafting (CABG) surgery involves various noxious stimuli resulting in stress response, which in turn increases the risk of perioperative myocardial ischemia. The present study was conducted to evaluate the effect of dexmedetomidine on the attenuation of hemodynamic response to intubation, skin incision, and sternotomy in CABG surgery.

Material and Methods:

Sixty patients were randomized into two groups of 30 each. Group D patients received dexmedetomidine 1 μg/kg as loading dose over 10 min, followed by continuous infusion of 0.5 μg/kg/h. In group P, normal saline was infused as loading and maintenance dose at similar rate. Hemodynamic parameters, total induction dose of thiopentone, and adverse effects were recorded. Statistical analysis was performed using SPSS version 20.0. Chi-square test and ANNOVA test were used and P < 0.05 was considered significant.

Results:

The percentage increase in heart rate was significantly lesser in group D than group P after intubation (7.04% v/s 15.08%), skin incision (5.91% v/s 10.11%), and sternotomy (5.33% v/s 11.65%). Similarly increase in systolic, diastolic, and mean blood pressure were significantly lesser in group D than group P after intubation, skin incision, and sternotomy. There was a significant reduction of mean total of thiopentone in group D in comparison to group P. (1.16 mg/kg v/s 2.44 mg/kg) (P<0.001).

Conclusion:

Dexmedetomidine resulted in significant attenuation of hemodynamic response to intubation, skin incision, and sternotomy in CABG surgery without significant adverse effects. It also significantly reduced the dose of thiopentone required for induction.

Effect of addition of buprenorphine or dexamethasone to levobupivacaine on postoperative analgesia in ultrasound guided transversus abdominis plane block in patients undergoing unilateral inguinal hernia repair: a prospective randomized double blind controlled trial

BACKGROUND

The transversus abdominis plane (TAP) block is an effective technique to block the thoracolumbar nerves innervating the anterolateral abdominal wall. This study was conducted to evaluate the analgesic efficacy and opioid consumption with the use of perineural buprenorphine or dexamethasone in TAP blocks after unilateral inguinal hernioplasties.

METHODS

This prospective, randomized, double-blinded, placebo-controlled study enrolled 93 patients scheduled for unilateral inguinal hernioplasty, followed by an ultrasound-guided TAP block. The participants were randomized into 3 groups (31 patients each). Group L received 20 ml 0.25% levobupivacaine + 1 ml normal saline (NS); group LB, 20 ml 0.25% levobupivacaine + 0.3 mg (1 ml) buprenorphine; and group LD, 20 ml 0.25% levobupivacaine + 4 mg (1 ml) dexamethasone. The patients were observed postoperatively for 24 h for first rescue analgesic requirement, total rescue analgesic consumption, and pain scores on the numeric rating scale (NRS).

RESULTS

The time to first rescue analgesic requirement was significantly longer in Group LB than in groups LD and L (688.87 ± 36.11 min, 601.45 ± 39.85 min, and 383.06 ± 36.21 min, respectively; P < 0.001). The mean total tramadol consumption in the first 24 h was the lowest in group LB (P < 0.001, L vs. LB / LD). Groups LB and LD displayed significantly lower NRS scores than group L (P < 0.001 both).

CONCLUSIONS

Levobupivacaine with perineural buprenorphine in a TAP block after unilateral open inguinal hernioplasty facilitates prolonged analgesia and reduced requirement for rescue analgesics compared to perineural dexamethasone, without significant side effects.

Comparison of efficacy of ultrasound-guided pectoral nerve block versus thoracic paravertebral block using levobupivacaine and dexamethasone for postoperative analgesia after modified radical mastectomy: A randomized controlled trial

Background and Aims:

Pectoral nerve (PecS II) block is the latest modality for providing postoperative analgesia after breast surgery. The present study was planned to compare the analgesic efficacy of thoracic paravertebral block (TPVB) and PecS II for postoperative analgesia after modified radical mastectomy (MRM).

Methods:

A total of 40 female patients undergoing radical mastectomy were randomly allocated into two groups (n = 20). Group T received ultrasound-guided TPVB, while group P received PecS II block using 0.25% levobupivacaine 24 ml + dexamethasone 1 ml (4 mg) before induction of anesthesia. The primary outcome was duration of analgesia (time to request first analgesic dose), while total rescue analgesic consumption in first 24 h, numeric rating score (NRS), and complication were secondary outcomes. The data were analyzed using IBM SPSS software version 22.0.

Results:

The duration of analgesia was significantly prolonged in the group P than group T (474.1 ± 84.93 versus 371.5 ± 51.53 min, respectively; P < 0.0001). Postoperative morphine consumed at 24 h was less in the group P than group T (11.25 ± 4.75 and 15.0 ± 4.86 mg, respectively; P = 0.018). NRS at movement and rest were lower in the group P as compared to group T at all time intervals (median 3 versus 4). No block-related complication was recorded in any group.

Conclusions:

The 0.25% levobupivacaine with dexamethasone 4 mg in PecS II block provided longer duration of analgesia than the TPVB in patients undergoing MRM without any adverse effects.

Life-Threatening Hypokalemic Quadriplegia in a Postoperative Patient

Acute hypokalemic paralysis is a reversible but potentially lethal clinical condition. We report a case, who developed rapidonset quadriparesis in immediate postoperative period after undergoing right percutaneous nephrolithotomy for bilateral renal stones. On evaluation, she was found to have hypernatremic, hyperchloremic, hypokalemic acidosis. This severe hypokalemia-induced quadriparesis was precipitated by repeated furosemide injections, use of potassium-free fluid as maintenance, intracellular shift due to free water administration in this patient, who had pre-existing distal renal tubular acidosis.

Anesthesia in a child operated for cleft lip associated with Patau's syndrome

Patients with Patau's syndrome (Trisomy 13) have multiple craniofacial, cardiac, neurological and renal anomalies with very less life expectancy. Among craniofacial anomalies cleft lip and palate are common. These craniofacial and cardiac anomalies present difficulties with anesthesia. We therefore describe the anesthetic management in the case of a Trisomy 13 child for operated for cleft lip at 10 months of age.

Effect of epidural levobupivacaine with or without dexamethasone soaked in gelfoam for postoperative analgesia after lumbar laminectomy: A double blind, randomised, controlled trial

Background and Aims:

Postoperative pain results in prolonged hospital stay and delayed return to normal activity. This study was conducted with the aim of evaluating the analgesic efficacy of gelfoam soaked in levobupivacaine with or without dexamethasone placed in the epidural space in patients undergoing lumbar laminectomy.

Methods:

Ninety adult patients were randomised into three groups. Gelfoam was soaked in 12 mL of 0.9% sodium chloride in Group P, 10 mL of 0.25% levobupivacaine + 2 mL of 0.9% sodium chloride in Group L, and 10 mL of 0.25% levobupivacaine + 2 mL of dexamethasone in group LD. The primary outcome was time to first request for rescue analgesia. Total 24-h tramadol consumption, and postoperative visual analog scale (VAS) scores were recorded. Chi-square test and analysis of variance test were used, and P < 0.05 was considered significant.

Results:

75 patients completed the study. Time to first rescue analgesia was longer in group LD [10.11 ± 3.10 h] compared with group L [6.48 ± 2.36 h] and group P [1.76 ± 1.13 h]. Total 24-h tramadol consumption was lower in group LD (88 ± 66.58 mg) and group L (120 ± 70.7 mg) compared with group P (280 ± 64.5 mg). Postoperative VAS scores were lower in group LD and group L compared with group P, both at rest and on movement.

Conclusion:

Epidural gelfoam soaked in levobupivacaine and dexamethasone prolongs the duration of analgesia and decreases rescue analgesic consumption and VAS score postoperatively, in patients undergoing lumbar laminectomy.

Efficacy of dexmedetomidine for prevention of emergence agitation in patients posted for nasal surgery under desflurane anaesthesia: A prospective double-blinded randomised controlled trial

Background and Aims:

Nasal surgery under desflurane anaesthesia is more prone to develop emergence agitation (EA). The present study aimed to evaluate the efficacy of dexmedetomidine for prevention of EA.

Methods:

A total of 72 patients were randomised to group C and group D. Group C patients received placebo while group D patients received dexmedetomidine 1.0 μg/kg bolus followed by 0.4 μg/kg/h after induction of anesthesia. End tidal desflurane was adjusted to keep the bispectral index (BIS) 45–55. Study drug was stopped at extubation. EA was evaluated from extubation till the patient was shifted to postanaesthesia care unit (PACU). Primary outcome was incidence of EA. Secondary outcome measures were requirement of desflurane, haemodynamic stability, and recovery after anaesthesia. The results were analyzed using SPSS version 21.

Results:

Infusion of dexmedetomidine significantly reduced the incidence of EA (Group C 52.8%; Group D 5.6%) by 89.5% (P = 0.00001). The endtidal desflurane concentration was significantly lower and there was an average 28.87% reduction in requirement of desflurane in group D compared to group C (P < 0.001). The mean heart rate was significantly higher in Group C (P < 0.001). In group C time to extubation, time to achieve BIS 90 and time to response on verbal command was significantly lesser compared to group D (P < 0.0001).

Conclusion:

Dexmedetomidine significantly reduced the incidence of EA and requirement of desflurane in patients undergoing nasal surgery. However, it was associated with delayed extubation, residual sedation, and prolonged PACU stay.

Comparison of 0.5% Ropivacaine and 0.5% Levobupivacaine for Sciatic Nerve Block Using Labat Approach in Foot and Ankle Surgery

Objective

Compared to ropivacaine, levobupivacaine is more lipophilic and a more potent vasoconstrictor. The study was conducted to compare the effect of 0.5% ropivacaine and 0.5% levobupivacaine in sciatic nerve block using conventional Labat approach in foot and ankle surgery.

Methods

A prospective double-blind, randomised study was carried out in 100 patients of either sex, aged between 20 to 60 years, and American Society of Anesthesiologist (ASA) grades I and II. Patients were randomly allocated into groups R and L of 50 each with 0.5% ropivacaine and 0.5% levobupivacaine, respectively, for sciatic nerve block using the Labat approach. We assessed the onset and duration of sensory and motor block, duration of analgesia, consumption of analgesic, and any untoward effect over 24 hours.

Results

Both the groups were comparable with regard to demographic variables and onset of sensory and motor block (p>0.05). Group L compared to group R had significantly longer median (95% confidence interval) duration of sensory block (647.50 min [624.99-674.41] vs. 535 min [524.77-559.83], respectively; p<0.0001) as well as motor block (1065.0 min [1054.5-1068.90] and 945 min [947.13-1013.30], respectively; p<0.0001). Postoperative analgesia also lasted significantly longer in group L compared to group R (1320 min [1273.4-1321.8] vs. 840 min [759.23-812.77]; p<0.0001]). Patients in group L had significantly better visual analogue scale (VAS) score and lesser consumption of analgesics (p<0.0001). None of the groups developed any adverse effect over the observation period.

Conclusion

Levobupivacaine provides prolonged postoperative analgesia in sciatic nerve block with reduction in postoperative analgesic consumption.

Feasibility and Complications of Spinal Anaesthesia in Percutaneous Nephrolithotomy: Our Experience

INTRODUCTION

Percutaneous Nephrolithotomy (PCNL) is the treatment modality used for the extraction of large renal stones, or multiple calculi or stones resistant to shock wave lithotripsy. The General Anaesthesia (GA) is the standard modality for PCNL. However, few studies conclude that Spinal Anaesthesia (SA) can be an alternative method of anaesthesia with similar incidence of complications.

AIM

In our study we evaluated the feasibility of spinal anaesthesia in terms of intraoperative and postoperative results in patients undergoing PCNL.

MATERIALS AND METHODS

The total 1298 PCNL operations were done for kidney stone from January 2013 to December 2016, out of which 1160 patients underwent PCNL under SA while remaining 138 operations were carried out under GA in the prone position. We retrospectively collected data from the patient's documents. The intraoperative haemodynamic stability was primary objective, and average fall of haemoglobin, postoperative anaesthetic outcome like total tramadol used in first 24 hours, surgical outcome like total clearance of stone burden, patient satisfaction, surgeon satisfaction, need of blood transfusion, conversion to general anaesthesia and pleural puncture were the secondary objectives.

RESULTS

The mean age of the patients was 38.0±17.1 years, and the mean operative time was 80.0±25.9 minutes. The mean calculus size was 30.2±11.8 mm. Return of sensory and motor activity in our study was 150.0±29.2 minutes and 111.0±18.8 minutes, respectively. In first 10 minutes of anaesthesia, 148 (12.75%) patients developed hypotension, which was managed by ephedrine 6 mg intravenously (IV). Total seventy two patients (6.2%) needed blood transfusion and 32 (2.75%) complained of headache, dizziness and low back pain for two to four days after the operation, which improved with analgesics and bed rest. Ninety percent of the patients had complete clearance of calculus or there were no significant residual calculi larger than 5 mm on follow up ultrasonography.

CONCLUSION

It can be concluded from our study that spinal anaesthesia is the safe and effective method of anaesthesia for PCNL in adult patients.

[Anesthesia in a child operated for cleft lip associated with Patau's syndrome]

Patients with Patau's syndrome (Trisomy 13) have multiple craniofacial, cardiac, neurological and renal anomalies with very less life expectancy. Among craniofacial anomalies cleft lip and palate are common. These craniofacial and cardiac anomalies present difficulties with anesthesia. We therefore describe the anesthetic management in the case of a Trisomy 13 child for operated for cleft lip at 10 months of age.

Comparison of 0.25% Ropivacaine for Intraperitoneal Instillation v/s Rectus Sheath Block for Postoperative Pain Relief Following Laparoscopic Cholecystectomy: A Prospective Study

INTRODUCTION

As Laparoscopic Cholecystectomy (LC) is not a totally pain free procedure, with the pain being most intense on the day of surgery and on the following day. Various techniques are available for postoperative pain relief like intraperitoneal instillation of local anaesthetics and rectus sheath block (RSB)which may provide effective pain relief.

AIM

To compare the efficacy of preemptive administration (initiated before the surgical procedure) of intraperitoneal instillation and rectus sheath block using ropivacaine for postoperative analgesia after laparoscopic cholecystectomy.

MATERIALS AND METHODS

A total of 75 selected patients were randomly assigned to three equal groups as Group R, who received bilateral RSB with 0.25 % ropivacaine 15 ml on either side; Group I, who received intraperitoneal instillation of 0.25% ropivacaine 50 ml and Group C (Control group), who received only rescue analgesic on pain. These were compared regarding postoperative analgesia in terms of Visual Analog Scale (0-10 cm), Prince Henry Hospital Pain Score (0-3), time to first dose of rescue analgesic (tramadol), total rescue analgesic consumption in 48 hours, patient satisfaction scores (1-7) and adverse effects.

RESULTS

The time to first rescue analgesic was significantly longer in Group R (16.16±4.73h) and Group I (7.84±1.34h) as compared to Group C (1.72±0.67h), p<0.001. Mean tramadol consumption in 48h for each patient was significantly less in Group R (148±54.92mg) and Group I (202±33.78mg) as compared to Group C (298±22.73mg) p<0.001. Postoperative pain scores were also significantly less in Group R and Group I as compared to Group C during first 6 hours, p<0.05. The difference in above parameters was also significant between Group R and Group I, p<0.05. Thus order of postoperative analgesia effect was: Group R > Group I > Group C. Rescue analgesic requirement showed a 32.21% reduction in Group I and 50.33% reduction in Group R as compared to Group C. Patient Satisfaction Scores (PSS) showed a significant difference among groups with acceptable PSS scores as: Group R (92%) v/s Group I (40%) v/s Group C (20%) p<0.001.

CONCLUSION

Pre-emptive administration of rectus sheath block or intraperitoneal instillation of 0.25% ropivacaine was found effective in providing better postoperative analgesia as compared to control group after laparoscopic cholecystectomy. Among these two techniques, rectus sheath block was found to be superior over intraperitoneal instillation.

Efficacy of dexmedetomidine as an adjuvant to ropivacaine in pediatric caudal epidural block

Context:

Caudal analgesia is a reliable and an easy method to provide intraoperative and postoperative analgesia for infraumbilical surgeries in pediatric population but with the disadvantage of short duration of action after single injection. Many additives were used in combination with local anesthetics in the caudal block to prolong the postoperative analgesia.

Aim:

We compared the analgesic effects and side effects of dexmedetomidine added to ropivacaine in pediatric patients undergoing lower abdominal surgeries.

Settings and Design:

Double-blinded randomized controlled trial.

Materials and Methods:

Sixty patients (2-10 years) were evenly and randomly assigned into two groups in a double-blinded manner. After sevoflurane in oxygen anesthesia, each patient received a single caudal dose of ropivacaine 0.25% (1 ml/kg) combined with either dexmedetomidine 2 μg/kg in normal saline 0.5 ml, or corresponding volume of normal saline according to group assignment. Hemodynamic variables, end-tidal sevoflurane, and emergence time were monitored. Postoperative analgesia, requirement of additional analgesic, sedation, and side effects were assessed during the first 24 h.

Results:

The duration of postoperative analgesia was significantly longer (P = 0.001) and total consumption of rescue analgesic was significantly lower in Group RD compared with Group R (P < 0.05). Group RD have better quality of sleep and prolonged duration of sedation (P = 0.001). No significant difference was observed in the incidence of hemodynamic changes or side effects.

Conclusion:

Addition of dexmedetomidine to caudal ropivacaine significantly prolongs analgesia in children undergoing lower abdominal surgeries without an increase in the incidence of side effects.

Comparison Between Dexmedetomidine and Propofol with Validation of Bispectral Index For Sedation in Mechanically Ventilated Intensive Care Patients

BACKGROUND AND AIM

Sedation plays a pivotal role in the care of the critically ill patient. It is equally important to assess depth of sedation. The present study had been designed to compare dexmedetomidine and propofol for sedation in mechanically ventilated intensive care patients. It also intended to verify the clinical validity, reliability and applicability of objective assessment tool bispectral index (BIS) for monitoring sedation and observe for correlation with the commonly used subjective scale, Ramsay sedation score (RSS).

MATERIALS AND METHODS

This prospective randomized study was carried out in 60 haemodynamically stable patients, aged between 18 to 80 years, requiring sedation and mechanical ventilation. These were divided equally into two groups. Group A received dexmedetomidine loading dose (1μg/kg) over 10 min followed by maintenance infusion of 0.5μg/kg/hr (0.2-0.7 μg/kg/hr). Group B received propofol loading dose (1mg/kg) over 5 min followed by infusion of 2mg/kg/hr (1-3mg/kg/hr). All patients received fentanyl 1 μg/kg prior to the study drugs. Vital parameters and sedation levels (using RSS and BIS) were monitored for the study period of 12 hours with level 4 or 5 of RSS as target for sedation. Ramsay score was compared with the average of BIS values. Statistical analysis was done using SPSS VERSION 17 software.

RESULTS

The study revealed statistically significant lower heart rates during sedation in dexmedetomidine group whereas fall in mean arterial pressure (MAP) following loading dose in propofol group. Patients sedated with dexmedetomidine were easily arousable. Need for rescue drug for achieving the desired RSS as well as incidence of bradycardia was more in dexmedetomidine group than other. Good correlation exists between Ramsay score and BIS values.

CONCLUSION

Dexmedetomidine reduces heart rate while propofol transiently affects MAP. However, adequate sedation is achieved with both the drugs. The data obtained from the study validate BIS monitoring for ICU sedation.