Clinical Research Directory

Low and Moderete Flow Anaesthesia on Haemodynamics

The study topic investigates the potential advantages of low-flow anesthesia in terms of physiological protection and resource saving.

Evaluating Perioperative Outcomes: Dexmedetomidine vs Lignocaine in Laparoscopic Chlolecystectomy

Nowadays laparoscopic surgery is the first choice for many surgeries. Such surgeries have revolutionized the surgical practice and has markedly reduced the incidence of intraoperative and postoperative complications. To minimize these side effects associated with the use of opioids, various methods have been adopted. Recently, different trials have highlighted the possible role of dexmedetomidine and lignocaine in providing postoperative analgesia and attenuating hemodynamic response. Literature showed conflicting results regarding both these drugs. So, we want to find the evidence for local setting. This Randomized Controlled Trial will be done at Department of Anesthesia, Sahiwal teaching hospital, Sahiwal for 12 months. Sample size of 140 cases; 70 cases in each group will be included through non-probability consecutive sampling. Then patients will be divided in two groups by using computer generated random number table. In group A, patients will be given dexmedetomidine infusion. In group B, patients will be given lignocaine infusion. All anesthesia procedures will be done by researcher. Heart rate and mean arterial pressure will be assessed before induction of anesthesia, after every 10 mins every 30 mins till completion of surgery. Total operative time will be noted. After procedure, patients will be assessed for postoperative pain score. when pain will be ≥4 on visual analogue scale rescue analgesia will be given and time will be noted. Total duration from time of surgery till need for rescue analgesia will be noted. Duration of postoperative analgesia opioid consumption /24 hrs.) will be presented by using mean± SD.

Non-invasive Goal-directed thErapy oN cIrcUlatory Shock

Circulatory shock occurs when the oxygen supply to the tissues decreases, leading to cellular damage and affecting about one-third of patients admitted to Intensive Care Units (ICUs). Cardiac Output (CO) is defined as the volume of blood ejected by the left ventricle per minute and is a crucial hemodynamic parameter for monitoring patients with signs of circulatory shock. However, this parameter is underutilized in patients treated in Emergency Units because its measurement typically involves invasive methods, which are not commonly available in this setting. Any method capable of measuring CO without the need for pulmonary artery catheter insertion is referred to as minimally invasive CO monitoring. Evaluating these parameters allows for a quicker determination of the etiology of circulatory shock, enabling the early initiation of goal-directed therapy. Goal-directed therapy has been proven effective in reducing morbidity and mortality, ICU length of stay, and mechanical ventilation duration in ICU patients who respond to fluid resuscitation. Currently, there are no data on the impact of a hemodynamic optimization strategy in patients during the early hours of shock. The objective is to assess whether goal-directed hemodynamic therapy, through non-invasive hemodynamic monitoring, reduces the time required for hemodynamic resuscitation in patients with septic shock. A multicenter, randomized, open-label study will be conducted in Emergency Units, Intensive Care Units, and Hospital Wards. Patients over 18 years old admitted with signs of septic shock (defined as systolic blood pressure less than 90 mmHg and/or mean arterial pressure less than 65 mmHg, along with at least one of the following criteria: lactate greater than 2 mEq/L, oliguria, neurological alteration, or capillary refill time greater than 3 seconds) will be included Participants will be randomized in a 1:1 ratio into two groups. In the Goal-Directed Therapy Group, patients will be monitored using the HemoSphere HPI™ (Edwards Life Sciences, Irvine, CA, USA), where parameters such as cardiac index (CI), stroke volume (SV), systolic blood pressure (SBP), mean arterial pressure (MAP), and HPI will guide medical management. In the Conventional Therapy Group, patients will be evaluated with the standard hemodynamic monitoring equipment typically found in emergency units..

Preoperative Sildenafil Administration for Hepatectomy

Hepatectomy is an important treatment for liver diseases, and bleeding is one of the most common complications during dissection of the liver parenchyma. The Control Low Central Venous Pressure (CLCVP) technique is currently one of the most important techniques to control intraoperative bleeding. It mainly consists of fluid restriction, position adjustment, and the use of vasodilators. However, these measures focus on decreasing CVP by reducing the volume of return blood, and less attention is paid to factors such as pulmonary vascular resistance and cardiac function. Sildenafil, known as Viagra, is currently used to treat erectile dysfunction and pulmonary hypertension in men. Its action inhibits phosphodiesterase-5 (PDE-5) and increases cGMP levels, leading to smooth muscle relaxation and vasodilation. Its pharmacological properties provide potential value for the treatment of many diseases. However, few studies have been conducted both domestically and internationally on the use of sildenafil citrate in liver resection related to CLCVP. This study aims to investigate the influence of preoperative oral administration of Sildenafil Citrate combined with IPM on IBL and surgical results during open or laparoscopic hepatectomy, as well as its safety and feasibility. It is expected to provide an innovative management optimization plan for reducing the bleeding in hepatectomy and to provide empirical support for the potential value of Sildenafil Citrate or Sildenafil-like drugs in improving the safety and quality of perioperative hepatectomy patients.

Effect of Amobarbital Sodium Combined With Low-dose Propofol on Hemodynamics During Induction and Perioperative Adverse Reactions

At present, there are limited data on perioperative efficacy of barbiturates at home and abroad. The purpose of this clinical trial is to observe the effects of amobarbital sodium combined with low-dose propofol on hemodynamics during induction and perioperative adverse reactions in gynecological laparoscopic surgery patients, and to provide a more reasonable, safe and comfortable anesthesia program for female patients who undergoing laparoscopic surgery. The main questions it aims to answer are: * whether the combination of the two results on more stable hemodynamics during induction in gynecological laparoscopic surgery patients; * whether the incidence of perioperative oxidative stress and inflammation and postoperative nausea and vomiting（ponv） improved after the use of the two combinations of anesthesia induction. Participants will: * Induction of anesthesia with the experimental drug or placebo； * 5 ml of venous blood was retained before, after, and 1 day after surgery for follow-up determination of serum associated factor levels； * To record their vital signs at any point during the anaesthetic process; Serum serological indexes related to oxidative stress and inflammation were determined. The agitation during the recovery period was recorded. The incidence and severity of ponv were recorded at 2h, 2-6h, and 6-24h postoperatively, and the use of palonosetron was also recorded.

Hemodynamic Comparison of Peripheral and Central VA ECMO.

The goal of this clinical trial is to monitor hemodynamic differences between central veno-arterial extracorporeal membrane oxygenation (VA ECMO) and peripheral VA ECMO. The main question it aims to answer is: * Efficacy of the different cannulation strategies for the establishment of for VA-ECMO circulation on hemodynamics and organ perfusion. Participants require VA ECMO support, will be divided into two groups in an intention-to-treat analysis: central artery cannulation and peripheral artery cannulation. Researchers will analyze different cannulation strategies for VA-ECMO and identify potential advantages and disadvantages for two groups of VA-ECMO.