After weaning from cardiopulmonary bypass following mitral valve replacement, a patient's cardiac output is reported to be 3.7 L/min measured by thermodilution technique using 5% dextrose in water 10 ml at room temperature as injec-tate. This value could be falsely high if
A 72-year-old woman is somnolent one day after left carotid endarterectomy. She has smoked 2 packs of cigarettes daily for 50 years. Six weeks ago, she underwent right carotid endarterectomy. At this time, arterial blood gases while breathing room air are PO2, 45 mmHg, PCO2, 60 mmHg, and pH 7.30. Which of the following is the most likely cause of the increased PCO2?
A patient with jaundice who has a minimally elevated SGOT (AST), markedly elevated alkaline phosphatase, and normal prothrombin time is to receive a muscle relaxant. Which of the following is most likely in this patient?
A 5-month-old infant with tetralogy of Fallot is scheduled for elective inguinal herniorrhaphy. Which of the following would require the operation to be postponed?
A patient is in sinus rhythm but has no pulse during cardiopulmonary resuscitation. There is marked resistance to positive pressure ventilation and breath sounds are difficult to hear bilaterally. The endotracheal tube is clearly in the trachea. The most appropriate next step in management is to