1.The metabolism of nitroprusside in the body requires the conversion of oxyhemoglobin (Fe++) to methemoglobin (Fe+++). The presence of sufficient quantities of methemoglobin in the blood will cause … Continue reading 100 ANAESTHESIA SECRETS – Respiratory
1.The glottis of a premature newborn is at the level of C3, for the term newborn the level is C4, and in the adult the glottis is at the C5 … Continue reading 100 ANAESTHESIA SECRETS – Paediatric
1.Anesthesia dolorosa refers to spontaneous pain in an area or region that is anesthetic. Neuropathic pain is pain initiated or caused by a primary lesion or dysfunction in the nervous … Continue reading 100 ANAESTHESIA SECRETS – Regional
1.Tachyphylaxis is a well-known phenomenon associated with repeated injections of local anesthetics leading to decreased effectiveness. 2.Interestingly, the dosing interval seems most important in the development of tachyphylaxis. If the … Continue reading 100 ANAESTHESIA SECRETS – Regional
1.Pulsus paradoxus describes an inspiratory fall in systolic arterial blood pressure of greater than 10 mm Hg often seen in cardiac tamponade. 2.The word ALONE is an acronym for five … Continue reading 100 ANAESTHESIA SECRETS – CVS
1.To calculate allowable blood loss, one must be aware of EBV ranges. For instance, the EBV of a premature neonate is 90 to 100 cc/kg. Term neonates have an EBV … Continue reading 100 ANAESTHESIA SECRETS – General
1.Type II HIT: a decrease in platelet count to 100,000/mm3 or half the preoperative value 5 to 10 days after administration of heparin. In HIT alternate anticoagulant for CPB are … Continue reading 100 ANAESTHESIA SECRETS – CVS
1.The fetal/maternal (F/M) drug ratio is a way to quantitatively describe drug transfer across the placenta. The anticholinergic drugs atropine and scopolamine have F/M drug ratios of 1.0 and readily … Continue reading 100 ANAESTHESIA SECRETS – OBS
1.Factor VIII mediates the anticoagulant effect of Hetastarch. (decrease plasma concentrations of factor VIII and von Willebrand factor by up to 80%, also interfere with platelet function and clot formation) … Continue reading 100 ANAESTHESIA SECRETS – CNS
1.Patients should take prescribed β-blockers on the day of surgery and continue them perioperatively. Because the receptors are up-regulated, withdrawal may precipitate hypertension, tachycardia, and myocardial ischemia. Clonidine should also … Continue reading 100 ANAESTHESIA SECRETS General
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