Laparoscopic Cholecystectomy

This single-center, prospective, randomized controlled trial aims to compare the effects of paravertebral block (PVB), external oblique intercostal (EOI) block, and intravenous patient-controlled analgesia (PCA) with tramadol on postoperative pain and opioid consumption in patients undergoing elective laparoscopic cholecystectomy. The primary endpoint is total tramadol consumption within 24 hours postoperatively. Secondary outcomes include pain scores, additional analgesic use, incidence of nausea/vomiting, mobilization time, and length of hospital stay.

This study investigates how different breathing machine (ventilator) settings affect the energy delivered to the lungs during surgery. Mechanical power is a measure of this energy, and high levels can sometimes lead to lung irritation. In clinical practice, a mode called Pressure-Regulated Volume Control (PRVC) is often used because it lowers the "peak" pressure in the airways, which is generally thought to be safer. However, doctors have noticed that even though the peak pressure goes down in PRVC mode, the total mechanical power displayed on the monitor might actually increase compared to the standard Volume-Controlled Ventilation (VCV) mode. In this study, patients undergoing gallbladder surgery will be monitored using both ventilation modes in a random order. The researchers will compare the machine-calculated mechanical power for both modes to see if the perceived benefit of lower peak pressure in PRVC actually results in lower overall energy transfer to the lungs.

This prospective randomized controlled study aims to evaluate the effects of preoperative ultrasound-guided erector spinae plane (ESP) block combined with low-flow anaesthesia on postoperative quality of recovery and opioid consumption in patients undergoing elective laparoscopic cholecystectomy. The study will compare postoperative recovery quality, pain scores, analgesic requirements, and perioperative outcomes between patients receiving ESP block with low-flow anaesthesia and those receiving standard anaesthetic management.

Incisional infiltration is the simplest, safest, and most effective anesthesia method for preventing incision pain after laparoscopic surgery, but even using long-acting local anesthetics, the effectiveness of postoperative analgesia can only last for a relatively short period of time. Studies have shown that up to 80% of patients experience postoperative pain following laparoscopic surgery due to inflammation caused by surgical incisions and surrounding tissues, necessitating pharmacological relief. Inflammatory mediators released from the soft tissues around laparoscopic incisions not only significantly alters the chemical microenvironment at the peripheral terminals of nociceptors, directly inducing pain, but also sensitizes afferent fibers, contributing to peripheral sensitization. Preemptive incisional infiltration using local anesthetics with corticosteroids which have potent local anti-inflammatory properties may play a key role in preventing or reducing postoperative pain. The objective of this trial is to determine whether preemptive incisional infiltration with ropivacaine plus triamcinolone is superior to ropivacaine alone in relieving postoperative pain for adults undergoing laparoscopic surgery. We also compare the effects of the two intervention measures on postoperative pain management, patient safety, and recovery quality.

Incisional infiltration is the simplest, safest, and most effective anesthesia method for preventing incision pain after laparoscopic surgery, but even using long-acting local anesthetics, the effectiveness of postoperative analgesia can only last for a relatively short period of time. Studies have shown that up to 80% of patients experience postoperative pain following laparoscopic surgery due to inflammation caused by surgical incisions and surrounding tissues, necessitating pharmacological relief. Inflammatory mediators released from the soft tissues around laparoscopic incisions not only significantly alters the chemical microenvironment at the peripheral terminals of nociceptors, directly inducing pain, but also sensitizes afferent fibers, contributing to peripheral sensitization. Numerous studies have shown that glucocorticoids not only can achieve anti-inflammatory and analgesic effects by inhibiting inflammatory cytokines and inflammatory responses but also can prolong the duration of action of local anesthetics. Preemptive incisional infiltration using local anesthetics with corticosteroids which have potent local anti-inflammatory properties may play a key role in preventing or reducing postoperative pain. The objective of this trial is to determine whether preemptive incisional infiltration with ropivacaine plus diprospan is superior to ropivacaine alone in relieving postoperative pain for adults undergoing laparoscopic surgery. The investigators also compare the effects of the two intervention measures on postoperative pain management, patient safety, and recovery quality.

This randomized clinical trial aims to evaluate and compare the analgesic efficacy of the Intertransverse Process Block (ITPB) and the Modified Thoracoabdominal Nerve Block through Perichondrial Approach (M-TAPA) in patients undergoing laparoscopic cholecystectomy. The primary outcome is the Visual Analog Scale (VAS) score within the first 24 hours after surgery. Secondary outcomes include total opioid consumption, requirement for rescue analgesia, block- related complications and adverse effects (hematoma, pneumothorax, local anesthetic systemic complications, vascular puncture, and infection), patient satisfaction assessed using a Likert scale, quality of recovery assessed using the QoR-15 questionnaire, and incidence of postoperative nausea and vomiting.

Studies have shown that up to 80% of patients experience postoperative pain following laparoscopic surgery due to inflammation caused by surgical incisions and surrounding tissues, necessitating pharmacological relief. Inflammatory mediators released from the soft tissues around laparoscopic incisions not only significantly alters the chemical microenvironment at the peripheral terminals of nociceptors, directly inducing pain, but also sensitizes afferent fibers, contributing to peripheral sensitization. The investigators conducted a multicenter, prospective, randomized controlled clinical study to explore the use of Loxoprofen Sodium Patch for preoperative local incision analgesia in laparoscopic surgery patients. The investigators aim to observe whether this method can effectively alleviate postoperative incision pain, reduce the dosage of postoperative analgesics and the side effects caused using postoperative analgesics, improve patient satisfaction, and provide new ideas for postoperative analgesia in laparoscopic surgery patients, promoting rapid recovery after laparoscopic surgery.

Ultrasound (US)-guided recto-intercostal fascial plane block (RIFPB) is a recently described abdominal wall block performed by injecting local anesthetic between the rectus abdominis muscle and the costal cartilage of the 7th rib. Due to the cranial attachment of the rectus muscle, this technique provides effective analgesia to the sternal, epigastric, and upper-mid abdominal regions, corresponding to the T6-T10/11 dermatomal levels. RIFPB may be used as an adjunct technique for thoracic procedures or as a standalone block for abdominal surgery. Ultrasound-guided transversus abdominis plane block (TAPB) is performed by injecting local anesthetic into the fascial plane between the internal oblique and transversus abdominis muscles. TAPB provides sensory blockade of the anterolateral abdominal wall at the T6-L1 dermatomal levels and is widely used for postoperative analgesia following abdominal surgeries, including laparoscopic cholecystectomy. This study aims to compare the effectiveness of US-guided RIFPB and TAPB on postoperative pain control after laparoscopic cholecystectomy.

The goal of this clinical trial is to investigate the Impact of adding SIMV Synchronization to our standard PCV-VG mode of ventilation on muscle relaxant consumption, the frequency of relaxant top-ups and surgeon satisfaction during Laparoscopic Cholecystectomy surgeries in ASA I\&II. The main question it aims to answer is do Ventilator synchrony (PCV-VG+SIMV) reduces muscle relaxant consumption and improves surgeon satisfaction by minimizing the perception of inadequate paralysis? Primary hypothesis: Ventilator synchrony (PCV-VG+SIMV) reduces muscle relaxant consumption and improves surgeon satisfaction by minimizing the perception of inadequate paralysis. Primary outcome; 1. Compare total intraoperative rocuronium consumption (mg/kg) between PCV-VG and PCV-VG + SIMV 2. To determine the frequency of additional muscle relaxant requests

This prospective, randomized, controlled, assessor-blinded trial will evaluate whether bilateral ultrasound-guided external oblique intercostal block (EOIB) reduces postoperative opioid consumption and improves pain control after laparoscopic cholecystectomy, compared with no block.

This study aims to evaluate the feasibility, safety, and cost-effectiveness of opportunistic salpingectomy (OS-the removal of the fallopian tubes) at the time of laparoscopic cholecystectomy (the removal of the gallbladder) to prevent ovarian cancer. Ovarian cancer is the fifth leading cause of cancer-related mortality in females in Canada. OS can prevent the most common and lethal type of ovarian cancer, high-grade serous carcinoma (HGSC). OS during gynecologic surgery (hysterectomy or instead of tubal ligation) is safe and effective. However, rates of hysterectomies and tubal sterilization are decreasing. This research team aims to extend the prevention of ovarian cancer by expanding to offer OS during other surgeries in the abdomen, when patients are already undergoing a surgical procedure. This study will examine: 1) the feasibility of OS at the time of laparoscopic cholecystectomy; 2) the safety of OS at the time of laparoscopic cholecystectomy; 3) any health services consequences of offering OBS during laparoscopic cholecystectomy. The hypothesis is that OS at the time of laparoscopic cholecystectomy is a feasible, safe, and cost-effective primary prevention strategy for ovarian cancer. It is also hypothesized that there will be 10-20 minutes of additional operating room time for completing OS, and that integrating the identified partners and knowledge users, as well as adding relevant knowledge users as the project progresses, will affect the rapid mobilization of our findings.

direct comparisons between ESPB and M-TAPA for postoperative analgesia after LC remain limited. This is an important area of clinical interest because the two blocks differ significantly in their anatomical targets, mechanism of analgesia, and likely dermatomal coverage. The ESPB provides analgesia through paravertebral spread affecting both dorsal and ventral rami, thereby offering posterior and visceral pain relief, whereas M-TAPA directly targets the thoracoabdominal nerves, resulting in better anterior and lateral abdominal wall analgesia. Understanding which technique offers superior or more balanced analgesia could help to optimise regional anaesthesia strategies in LC and to improve patient outcomes.

After laparoscopic cholecystectomy, pain remains an important problem affecting patient recovery. A revised paravertebral block (r-PVB) was developed as a single-shot, large-volume intercostal-space injection performed at the exposed mid-axillary eighth or ninth intercostal level with the patient kept supine after induction of anesthesia. Rather than puncturing the classical paraspinal target near the transverse process with a specific prone or lateral position of the patient, r-PVB is designed to exploit medial spread of local anesthetic along the intercostal-endothoracic-extrapleural continuum, thereby generating a functional paravertebral block while avoiding direct entry into the paravertebral space and specific body positioning. r-PVB addresses several practical limitations of conventional PVB by eliminating the need to reposition an anesthetized patient, using a more accessible and potentially clearer sonographic window, reducing interference from transverse-process shadowing, and facilitating in-plane needle visualization.

This trial aims to evaluate the effectiveness of a multi-level, multi-component de-implementation strategy to reduce unnecessary preoperative testing. Sixteen Michigan Value Collaborative (MVC)/Michigan Surgical Quality Collaborative (MSQC) sites in Michigan will implement several tools that have been proven to reduce unnecessary testing at a single site, including clinician education, a decision aid, audit and feedback on performance, and a pay-for-performance incentive. The researchers believe that, through the use of these strategies, there will be a significant reduction in unnecessary preoperative testing during the intervention.

Laparoscopic cholecystectomy is one of the most commonly performed abdominal surgical procedures worldwide. Although the widespread implementation of Enhanced Recovery after Surgery (ERAS) protocols has improved perioperative outcomes, many patients continue to experience postoperative pain, sleep disturbance, anxiety, nausea, and fatigue, symptoms that collectively impair overall quality of recovery (QoR). Melatonin, an endogenous hormone that regulates circadian rhythm, also possesses anxiolytic, analgesic, antioxidant, and anti-inflammatory properties, positioning it as a valuable perioperative adjunct. However, most previous studies have evaluated melatonin primarily for isolated outcomes such as sleep quality or anxiety. Its effect on comprehensive postoperative recovery, assessed using validated patient-reported outcome instruments, remains insufficiently explored, particularly in laparoscopic cholecystectomy populations and in South Asian clinical settings. This prospective, randomized, double-blind, placebo-controlled trial (the MEL-REC trial) aims to evaluate the effect of preoperative oral melatonin on postoperative quality of recovery in patients undergoing elective laparoscopic cholecystectomy under general anaesthesia. The study will be conducted in the Department of Anaesthesiology at Combined Military Hospital (CMH), Dhaka, Bangladesh, over a total study period of 18 months (January 2026 to June 2027), with patient recruitment planned for 8 months (May to December 2026) after taking approval from institutional review board. Eighty four adult patients aged 18-60 years with American Society of Anesthesiologists (ASA) physical status I-II will be randomly allocated in a 1:1 ratio into two equal groups (n = 42 per group) using computer-generated permuted block randomization with centralized pharmacy based allocation concealment. The melatonin group (Group M) will receive oral melatonin 6 mg administered 60 minutes before induction of anaesthesia and the placebo group (Group P) will receive an identical placebo tablet under the same conditions. Neither the participants, the treating anaesthesiologist, the outcome assessor, nor the data analyst will be aware of group allocation until database lock. All patients will receive a standardized anaesthesia and perioperative management protocol, including standardized postoperative analgesia. The primary outcome will be postoperative quality of recovery assessed using the Quality of Recovery-15 (QoR-15) score at 24 ± 2 hours after surgery. Secondary outcomes include postoperative sleep quality measured by the Richards-Campbell Sleep Questionnaire, change in preoperative anxiety (delta-VAS-A score), total opioid consumption during the first 24 hours expressed as intravenous morphine milligram equivalents, incidence of postoperative nausea and vomiting, and time to first rescue analgesic request. All postoperative outcomes will be assessed by a trained research assistant blinded to group allocation. Based on the available evidence, it is anticipated that patients receiving preoperative melatonin will demonstrate higher QoR-15 scores at 24 hours after surgery compared with the placebo group. The melatonin group is also expected to have improved postoperative sleep quality, reduced opioid consumption, and a greater reduction in preoperative anxiety. If a clinically meaningful benefit is confirmed, given its well established safety profile, low cost, and ease of oral administration, preoperative melatonin may represent a practical perioperative adjunct that can be readily incorporated into ERAS protocols for laparoscopic cholecystectomy. The trial will be prospectively registered in the Bangladesh Medical Research Council (BMRC) clinical trial registry or clinicaltrials.gov prior to recruitment.

This study aims to evaluate whether preoperative oral administration of ginger (800 mg, given 2 hours before surgery) reduces the incidence and severity of postoperative nausea and vomiting (PONV) within the first 24 hours after laparoscopic cholecystectomy.

Several studies have demonstrated that inhalational anesthetic agents such as desflurane and sevoflurane may cause varying degrees of postoperative sore throat, hoarseness, and cough in orotracheally intubated patients. However, data evaluating these outcomes under low-flow anesthesia conditions remain limited and insufficient. This single-center, prospective, randomized controlled study will be conducted in patients aged 18-65 years, classified as American Society of Anesthesiologists (ASA) physical status I-II, who are scheduled to undergo elective laparoscopic cholecystectomy under general anesthesia and who provide written informed consent to participate in the study. The primary objective of the study is to compare the effects of low-flow desflurane and low-flow sevoflurane anesthesia on the incidence and severity of postoperative sore throat. The secondary outcomes include the evaluation of postoperative hoarseness and cough, the incidence of postoperative nausea and vomiting (PONV), and the total consumption of inhalational anesthetic agents.

The goal of this clinical trial is to learn whether giving less intravenous (IV) fluid (restrictive administration) after surgery is as effective as giving more IV fluid (liberal administration) in maintaining body stability (homeostasis) among adults undergoing laparoscopic gallbladder removal (cholecystectomy). The main questions it aims to answer are: Does restrictive IV fluid administration maintain stable blood pressure, heart rate, and urine output after laparoscopic cholecystectomy? Are there any differences in postoperative recovery or complications between restrictive and liberal fluid regimens? Researchers will compare patients receiving liberal IV fluid administration with those receiving restrictive IV fluid administration to see if both methods maintain similar postoperative homeostasis and recovery outcomes. Participants will: Be adults aged 18-60 years (ASA class I-II) undergoing elective laparoscopic cholecystectomy. Be randomly assigned to one of two groups: Group A: Liberal IV fluid administration for 6 hours after surgery. Group B: Restrictive IV fluid administration for 6 hours after surgery. Have their vital signs (pulse, blood pressure, mean arterial pressure) and urine output recorded at multiple time points after surgery (immediate, 3, 6, 12, and 24 hours).

This prospective randomized controlled trial aims to evaluate whether the timing of ultrasound-guided subcostal transversus abdominis plane (TAP) block combined with rectus sheath block (RSB) affects postoperative pain in patients undergoing laparoscopic cholecystectomy. Participants will be randomly assigned to receive the combined regional blocks either before surgical incision or after completion of surgery. The primary outcome is postoperative pain intensity measured using a numerical rating scale. Secondary outcomes include opioid consumption, incidence of postoperative nausea and vomiting, and other recovery parameters. The results of this study may help optimize the timing of abdominal wall blocks to improve postoperative analgesia and recovery following laparoscopic cholecystectomy.

This prospective observational study aims to evaluate and compare the sensory block distribution and regression patterns of two regional anesthesia techniques - External Oblique Plane Block (EOPB) and Serratus Intercostal Plane Block (SIPB) - in patients undergoing laparoscopic cholecystectomy. Thirty adult patients (ASA I-III, BMI ≤ 35 kg/m², ≥50 kg) scheduled for elective laparoscopic cholecystectomy procedures will be included, with 20 in each block group. Sensory block areas will be assessed using pinprick test, and dermatomal mapping will visualize the spread. The findings are expected to improve understanding of block behavior and guide multimodal analgesia strategies in laparoscopic cholecystectomy.

Today, the majority of gallbladder removals surgeries are done using minimally invasive techniques through small cuts to help patients recover faster. However, these procedures are technically more challenging because surgeons have a restricted view of the patient's anatomy, which can increase the risk of serious complications. Artificial intelligence (AI) tools have been developed to guide surgeons during surgery and help them make safer decisions that reduce the risk of injury to the patient. This study will use a randomized controlled trial to compare outcomes between surgeries with AI assistance and standard procedures without AI. Primary Objective: To determine whether the AI improves surgeons' ability to achieve the Critical View of Safety, a key step for safe gallbladder removal, compared to standard procedures. Secondary Objectives: * Determine whether the AI helps the surgeon perform more safe dissections compared to the standard procedures. * Collect surgeon feedback on the use of AI during the procedure

This study investigates the effects of a hot foot bath on postoperative pain and time to first gas release in patients undergoing laparoscopic cholecystectomy. The intervention is a non-pharmacological supportive method applied during the early postoperative period. Participants will be randomly assigned to either intervention or control groups. No FDA-regulated drug or device is involved.

Perioperative hypothermia is a frequent and preventable complication that may cause adverse outcomes such as increased blood loss, impaired coagulation, and delayed recovery. Various active warming techniques are used to maintain normothermia during anesthesia; however, their comparative effects on systemic inflammatory responses remain unclear. This randomized controlled clinical trial aims to evaluate the effects of different intraoperative warming methods on hematologic inflammatory indices - including neutrophil-to-lymphocyte ratio (NLR), platelet-to-lymphocyte ratio (PLR), and systemic immune-inflammation index (SII) - in patients undergoing elective laparoscopic cholecystectomy under general anesthesia. A total of eligible adult patients will be randomly assigned into four groups according to the intraoperative warming method applied: Control Group: No active warming applied. Forced-Air Warming (FAW) Group: Warming blanket system used throughout surgery. Fluid Warming (FW) Group: Intravenous fluids warmed to maintain normothermia. Combined Warming (FAW + FW) Group: Both forced-air and fluid warming applied simultaneously. Core body temperature and perioperative data will be recorded. Venous blood samples will be obtained preoperatively and 24 hours postoperatively to calculate inflammatory indices. The primary objective is to determine whether active intraoperative warming techniques modulate postoperative inflammatory markers compared to no warming. Secondary outcomes include intraoperative temperature trends, recovery times, and the incidence of hypothermia-related complications. The results are expected to identify the most effective warming strategy to minimize inflammation and optimize postoperative recovery in laparoscopic procedures.

This study aims to compare the efficacy of using Ultrasound guided modified thoracoabdominal nerve block through perichondrial approach (M-TAPA) versus quadratus lumborum block for postoperative analgesia in laparoscopic cholecystectomy under general anesthesia.

Laryngoscopy and intubation during laparoscopic cholecystectomy often cause sudden increases in heart rate and blood pressure, which can be harmful in some patients. Medications such as labetalol and lignocaine are commonly used to reduce this hemodynamic response. This randomized controlled trial at Hayatabad Medical Complex, Peshawar, will compare intravenous labetalol (0.25 mg/kg) and lignocaine (1.5 mg/kg), administered 3 minutes before laryngoscopy. A total of 116 patients undergoing elective laparoscopic cholecystectomy will be randomly assigned to either drug group. The primary goal is to determine which drug is more effective in keeping heart rate and mean arterial pressure within ±20% of baseline during and after intubation. The study will also record blood pressure trends, intubation details, rescue medications, and adverse events such as bradycardia or hypotension. Results will help guide anesthesiologists in selecting the safer and more effective option to maintain cardiovascular stability during surgery.