Anesthesia Hub -

10 Random Questions

A 70-year-old man has a pacemaker set at VOO mode at 70 bpm with temporary atrial and ventricular wires placed prior to separation from cardiopulmonary bypass. Fifteen minutes after separation, he develops atrial fibrillation with a ventricular response of 80 to 100 bpm. Which of the following ECG findings is most likely?

(A) Irregular atrial and ventricular complexes with loss of pacer artifacts
(B) Irregular ventricular complexes with preserved ventricular pacer artifacts at 70 bpm
(C) Occasional pacer artifacts when intrinsic ventricular rate is slower than 70 bpm
(D) Regular ventricular complexes at 70 bpm
(E) Ventricular complexes with preserved atrial and ventricular pacer artifacts at 70 bpm

Following delivery with pudendal block, a patient requires anesthesia for removal of a retained placenta. The most appropriate anesthetic is

(A) epidural block
(B) ketamine analgesia with midazolam for amnesia
(C) opioid-based general endotracheal anesthetic
(D) potent inhaled general endotracheal anesthetic
(E) subarachnoid block

ADVANCED OB

Which of the following statements concerning hyperkalemia after succinylcholine administration to a patient with a spinal cord injury is true?

(A) It is unlikely to occur if the lesion is located below T6
(B) It is unlikely to occur within 24 hours of the injury
(C) It is unlikely to occur more than 60 days after the initial injury
(D) It is prevented by pretreatment with small doses of a nondepolarizing agent
(E) It is decreased in magnitude by pretreatment with calcium chloride

BASIC Pharmacology & Pharmacokinetics

Which of the following is the most likely cause of the rapid onset of local anesthesia when sodium bicarbonate is added to lidocaine?

(A) Decreased extracellular calcium ion concentration
(B) Increased extracellular pH
(C) Increased intracellular pH
(D) Increased ionized lidocaine diffusion
(E) Increased nonionized lidocaine concentration

BASIC Pharmacology & Pharmacokinetics

Which of the following malfunctions causes the line isolation monitor to alarm?

(A) Discharge of static electricity
(B) Flow of current to ground in the isolated circuit
(C) Interruption of current to electrical outlets caused by a circuit breaker
(D) Surge of current in the main power supply
(E) Total electrical current exceeding circuit capacity

BASIC Equipment & Physics

Which of the following statements concerning the ventilatory effects of inhalational anesthesia is true?

(A) Assisted ventilation is not an effective technique to achieve normocarbia
(B) Surgical stimulation does not affect ventilation
(C) Combined doses of nitrous oxide and isoflurane depress ventilation the same as an equipotent dose of isoflurane alone
(D) The ventilatory response to increasing carbon dioxide concentration is normal
(E) The ventilatory response to hypoxemia is preserved

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

ADVANCED Respiratory & Critical Care

During induced hypotension for clipping of a cerebral aneurysm in a 20-degree head-up position, the arterial pressure transducer should be zero referenced at which level?

(A) External auditory meatus
(B) Midaxillary line at the fifth intercostal space
(C) Sternal notch
(D) Thyroid cartilage
(E) Top of the cranium

Anesthesia for vaginal delivery is provided by block of spinal segments

(A) T10-11
(B) T8-12
(C) Ll-2
(D) S2-4
(E) L5-S1

Addition of 20 cmH2O positive end-expiratory pressure to a patient receiving controlled mechanical ventilation decreases cardiac output and left ventricular function by

(A) increasing right ventricular preload
(B) increasing right ventricular afterload
(C) increasing left ventricular preload
(D) increasing left ventricular afterload
(E) producing myocardial ischemia

BASIC Respiratory & Critical Care General Cardiac