10 Random Questions
During a right lower lobe resection, SpO2 decreases from 99% to 70% after institution of one-lung ventilation. FiO2 is 1.0. The most appropriate management is to
- (A) administer an inhaled bronchodilator
- (B) apply continuous positive airway pressure to the right lung
- (C) apply positive end-expiratory pressure to the left lung
- (D) increase tidal volume
- (E) reinflate the right lung
The ECG tracing shows
- (A) aberrant intraventricular conduction
- (B) acceleration of phase 4 depolarization of the sinus node
- (C) a compensatory pause
- (D) initiation of re-entrant supraventricular tachycardia
- (E) paroxysmal atrial fibrillation
Severe nausea and vomiting in the PACU is most effectively treated with a drug that acts as an antagonist at which of the following receptors?
- (A) Alpha-adrenergic
- (B) Beta-adrenergic
- (C) Dopamine
- (D) GABA
- (E) Glutamate
Pulmonary artery diastolic pressure increases acutely from 10 to 20 mmHg in a 28-year-old man undergoing cervical laminectomy in the sitting position. The most appropriate first step in the management of this patient is to
- (A) administer furosemide
- (B) aspirate from the proximal port of the pulmonary artery catheter
- (C) inflate the balloon on the pulmonary artery catheter
- (D) place the patient in the left lateral decubitus position
- (E) start an infusion of nitroglycerin
When used with morphine for premedication, which of the following drugs is most likely to cause sedation?
- (A) Atropine
- (B) Cephalothin
- (C) Clonidine
- (D) Metoclopramide
- (E) Ranitidine
A 29-year-old man who has been nasotracheally intubated for two weeks following a motor vehicle accident has a fever (39C) and a constant headache. Leukocyte count is 18,000/mm3. The most likely cause is
- (A) fractured nasal septum
- (B) retropharyngeal abscess
- (C) maxillary sinusitis
- (D) meningitis
- (E) rhinovirus infection
Maternal hyperventilation will result in
- (A) increased umbilical blood flow
- (B) decreased affinity of maternal hemoglobin for oxygen
- (C) decreased maternal and fetal cardiac output
- (D) increased placental transfer of oxygen
- (E) increased fetal cerebral blood flow
Pulsus paradoxus is commonly seen during anesthesia in patients with each of the following conditions EXCEPT
- (A) severe asthma
- (B) right-sided heart failure
- (C) hypovolemia
- (D) atrial septal defect
- (E) obesity
In patients with head trauma, which of the following factors results in a return of arterial pH toward normal levels after two days of mechanical hyperventilation?
- (A) Decreased renal absorption of hydrogen ions
- (B) Decreased renal blood flow
- (C) Increased PaCO2 with constant minute ventilation
- (D) Increased renal excretion of bicarbonate ions
- (E) Normalized cerebrospinal fluid pH
Alveolar dead space is decreased by
- (A) halothane anesthesia
- (B) positive end-expiratory pressure
- (C) deliberate hypotension
- (D) atropine premedication
- (E) decreased tidal volume