10 Random Questions

Which of the following characteristics of local anesthetics is associated with long duration of action?

BASIC Pharmacology & Pharmacokinetics

During transurethral resection of the prostate under spinal anesthesia with a sensory level to T10, a patient has sudden onset of sharp upper abdominal pain and nausea. Arterial blood pressure increases from 120/80 to 150/90 mmHg; the patient becomes diaphoretic. Which of the following is the most likely diagnosis?

ADVANCED General

The most likely cause of this capnographic tracing obtained just after laryngoscopy and intubation is

BASIC Equipment & Physics General

Postoperatively, a patient is being mechanically ventilated by a constant-flow, pressure-cycled ventilator with the following initial settings: inspiratory/expiratory (I/E) ratio of 1:2, peak inspiratory pressure (PIP) of 25 cmH2O, and rate of 10/min. One hour later, the I/E ratio is 1:4. Which of the following would ensure that the minute ventilation is the same as that initially set?

BASIC Equipment & Physics Respiratory & Critical Care

Cholinergic receptor blockade

As part of a preoperative evaluation, a patient had a thallium scan showing a 'cold spot' over the left ventricle that occurs with moderate exercise and disappears at rest. This most likely indicates

BASIC General Cardiac

If administered prior to induction of anesthesia, which of the following drugs is most likely to cause tachycardia?

BASIC Pharmacology & Pharmacokinetics

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

BASIC General

Following a right lower lobectomy, a patient develops a bronchopleural fistula and becomes hypoxic. He is orally intubated and mechanically ventilated with pure oxygen. PaO2 is 65 mmHg, PaCO2 is 70 mmHg, and pH is 7.25. Which of the following will produce the most favorable change in the blood gases?

ADVANCED Respiratory & Critical Care General

A 64-year-old man with a large pancreatic tumor has severe abdominal pain that radiates to the low back. Which of the following is the most appropriate management?