background: the postoperative shivering is one of the common complications of anesthesia after surgery and in the recovery room, which can cause the increased systemic blood pressure, oxygen consumption, heart rate and the cardiac arrhythmias among patients. due to the variety of drugs used in general anesthesia, and necessity of choosing the effective intravenous and the inhaled drugs to reduc...

Materials and Methods: A randomised, prospective, and double-blind study was conducted in 60 American Society of Anaesthesiologists Grade I and II patients of age between 18 and 65 years,either gender, scheduled for various surgeries under spinal anaesthesia. The patients were randomised in two groups of 30 patients each to receive either dexmedetomidine 0.5 μg/kg or tramadol 0.5 mg/kg as a slo...

BACKGROUND Comparable minimum alveolar concentration (MAC) fractions of volatile anaesthetics produce similar thermoregulatory impairment. Nitrous oxide, however, decreases the vasoconstriction threshold less than sevoflurane or isoflurane. We tested the hypothesis that nitrous oxide also decreases shivering threshold less than isoflurane alone or in combination. METHODS Twenty-four rabbits w...

Shivering frequency scales predictably with body mass and is 10 times higher in a mouse than a moose. The link between shivering frequency and body mass may lie in the tuning of muscle elastic properties. Titin functions as a muscle 'spring', so shivering frequency may be linked to titin's structure. The muscular dystrophy with myositis (mdm) mouse is characterized by a deletion in titin's N2A ...

INTRODUCTION Shivering, a common intraoperative problem under spinal anesthesia increases the oxygen consumption considerably and is uncomfortable and distressing to the patient, anesthesiologist as well as surgeon. The present study was designed to explore the effectiveness of tramadol, clonidine and dexmedetomidine in the treatment of post spinal anesthesia shivering and to look for their adv...

BACKGROUND AND OBJECTIVES Hypothermia is likely to develop faster during spinal anesthesia than epidural anesthesia. A natural consequence of the rapid temperature decrease during spinal anesthesia is that the shivering threshold will be reached sooner and that more shivering will be required to prevent further hypothermia. We tested the hypotheses that the onset of hypothermia is more rapid an...

one of the most common complications of operation and anesthesia is shivering. the purpose of this study was to compare the effectiveness of ondanseton and meperedine in preventing shivering after off-pump coronary artery bypass graft (opcab). in this double-blind randomized clinical trial, the sample consisted of 90 patients, who were candidates of cabg under general anesthesia. these patients...

The concurrent neural control of two thermoregulatory responses, shivering thermogenesis (ST) and nonshivering thermogenesis (NST), was investigated in chronically implanted cold-exposed rats. The effects of heating the preoptic/anterior hypothalamus (POAH) on shivering and on the rate of oxygen consumption (Vo2) were measured in these unanesthetized animals. With ambient temperature maintained...