Articles: general-anesthesia.
-
Anesthesia and analgesia · Aug 1987
Comparative StudyEffect of meperidine on oxygen consumption, carbon dioxide production, and respiratory gas exchange in postanesthesia shivering.
Meperidine has been used to suppress postanesthesia shivering. However, its efficacy to date has only been assessed by observation of visible shivering. ⋯ Arterial PCO2 levels remained unchanged at normal, whereas significant improvements occurred in pH and bicarbonate levels. Meperidine is an effective method of reducing the elevated metabolic demand of shivering.
-
A case is presented of retrobulbar haemorrhage following anaesthesia for the removal of a chicken bone from the pharynx of a patient with systemic lupus erythematosus. The aetiology and treatment are discussed.
-
The anaesthetic management of a 26-year-old woman who sustained an unstable fracture of C2 when 40 weeks pregnant, is described.
-
Randomized Controlled Trial Clinical Trial
Anesthesia and hypertension: the effect of clonidine on perioperative hemodynamics and isoflurane requirements.
Thirty patients (ASA physical status II-III) with a history of arterial hypertension, whose blood pressure (BP) control varied from normotension to moderate hypertension (diastolic BP less than 110 mmHg), scheduled for elective surgery under general anesthesia, were randomly assigned to two groups. Group 1 was premedicated 90-120 min prior to induction with diazepam 0.15 mg X kg-1 po; group 2, in addition, received clonidine 5 micrograms X kg-1 po. Anesthetic depth was assessed by on-line aperiodic analysis of the electroencephalogram. ⋯ In group 2, clonidine produced a rapid preoperative control of systolic and diastolic BP from 166 +/- 32/95 +/- 14 to 136 +/- 80 +/- 11 (P less than 0.01), was more effective in blunting the reflex tachycardia associated with laryngoscopy and endotracheal intubation than lidocaine-fentanyl pretreatment. It significantly reduced the intraoperative lability (coefficient of variation) of systolic (P less than 0.01) and diastolic BP and heart rate (HR) (P less than 0.05), and resulted in significantly slower HR during recovery (P less than 0.01). Anesthetic requirements for isoflurane were reduced 40% (P less than 0.01) in group 2; narcotic supplementation was also significantly reduced (P less than 0.005).(ABSTRACT TRUNCATED AT 250 WORDS)