![]() (B) verify proper placement of the CVP catheter.(A) administer furosemide 20 mg intravenously.After discontinuing the enflurane, the most appropriate action would be to CVP is now 20 mmHg and the EKG demonstrates a midjunctional rhythm. Ten minutes after induction with thiopental 200 mg followed by enflurane 3% in nitrous oxide and oxygen (50% each), blood pressure decreases suddenly from 110/70 to 80/50 mmHg with heart rate unchanged at 78 bpm. Central venous pressure (CVP) measured from an internal jugular catheter inserted before induction of anesthesia is 7 mmHg. Preoperative EKG and all laboratory values are normal except for a hematocrit of 29% and serum potassium level of 3.2 mEq/L. (E) measure arterial blood gas and serum electrolyte valuesĪ 65-year-old man with essential hypertension well controlled around 140/90 mmHg with hydrochlorothiazide is scheduled for right colectomy for carcinoma. ![]() (D) administer potassium 5 mEq intravenously over one minute followed by propranolol 0.25 mg.(C) increase minute ventilation to 7.5 L/min.(B) discontinue the succinylcholine infusion.(A) increase the halothane concentration to 1.25%.As the carbon dioxide is being insufflated into the abdomen, the blood pressure is noted to be elevated (150/100 mmHg) and ventricular bigeminy is present. The ventilator is set to deliver a minute volume of 5 liters through an endotracheal tube. Anesthesia is induced with thiopental followed by nitrous oxide 50%, halothane 0.75%, and a continuous succinylcholine infusion. The EKG demonstrates atrial fibrillation. Preoperatively she is taking digoxin and an unknown medication for chronic mental depression. A 30-year-old, 70-kg woman with mitral stenosis is scheduled for elective laparoscopic sterilization. ![]()
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