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Filter by:Dexmedetomidine is a highly selective alpha2-adrenergic receptor agonist with sedative, analgesic, anti-anxiety, and inhibitory sympathetic nerve excitation properties. It is commonly used in clinical anesthesia and intensive care.Radical gastrectomy for gastrointestinal malignant tumors is a common major operation in clinical practice, with long operation time, great trauma and strong stress response of patients. Dexmedetomidine is often used in general anesthesia during such operations, but its long-term use or large dose may produce certain side effects.Common side effects of dexmedetomidine include bradycardia and hypotension, etc. Previous studies have reported that dexmedetomidine can prolong QT interval and is at risk of causing tip torsion type ventricular tachycardia.Abnormal Potassium may affect myocardial repolarization and increase the risk of tip torsion ventricular tachycardia.The main purpose of this study was to observe the effects of long-term use of dexmedetomidine on perioperative internal environment such as electrolyte and rehabilitation indicators during radical general anesthesia for gastrointestinal malignancy, and the secondary purpose was to explore the optimal dose of dexmedetomidine for general anesthesia for patients undergoing radical general anesthesia for gastrointestinal malignancy.
Heparin diluent or normal saline is generally used as the arterial tube flushing in clinical practice, but there is no consensus on the choice of flushing fluid. Heparin can affect the blood coagulation function, and even lead to heparin-related thrombocytopenia, increasing the risk of perioperative embolism. Sonoclot is a blood viscoelasticity test, which can provide comprehensive information on the coagulation's cascade and the entire process and be quicker and more effective than routine laboratory coagulation tests. In this research, the coagulation and platelet function analyzer called Sonoclot is used to evaluate the effect of different concentrations of pressurized heparin on the coagulation and platelet function of perioperative patients, which can provide a reference for the clinical choice of appropriate arterial flushing.
During a period of a year, reticulocyte hemoglobin content (RetHe) measurements (Sysmex) are done out of blood samples taken on several occasions during normal patient care: 1. preoperatively at the surgical or anesthetic outpatient visit 2. on admission or pre- induction of anesthesia 3. postoperatively at the postanesthetic care unit 4. on day 3 postoperatively 5. on day 5 postoperatively Additionally a Quality of Life (QoL) questionnaire will be taken from the participants before surgery and 30 days after surgery to evaluate the course of QoL perioperatively.
The effect of supplemental oxygen on surgical site infections was already investigated in several studies before. Although, oxygen is one of the most used medical therapy in hospitalized patients, the influence on the cardiovascular system is still unknown. Available data indicate beneficial effects of supplemental oxygen on cardiovascular function. Because, no evidence exists concerning the perioperative period, it is our objective to investigate supplemental oxygen in cardiac risk patients undergoing major abdominal surgery. Due to the significant reduction of BNP by inhibiting sympathetic nerve activity we hypothesize that supplemental oxygen have beneficial effects in perioperative BNP release in cardiac risk patients undergoing major abdominal surgery.
The process of enhancing an individual's functional capacity to optimize physiologic reserves before an operation to withstand the stress of surgery has been coined prehabilitation. This is a prospective randomized controlled trail, designed to explore if the patients who take thoracoscopic lobectomy for lung cancer will benefit from family trimodal prehabilitation strategy. Trimodal prehabilitation includes exercise, nutrition supplement and physiology management preoperatively. It starts from the day that patients decide to take the surgery until the day before surgery, lasting 2~3 week in our hospital. And we follow-up patients until 8 weeks after surgery to investigate if trimodal prehabilitation strategy can improve the postoperative functional recovery，reduce complications and improve prognosis.