Anesthesia Hub -

10 Random Questions

Compared with the response of a normal patient, administration of a bolus dose of pancuronium (0.15 mg/kg) to a patient with cirrhosis and ascites would be associated with

(A) longer duration
(B) more rapid onset
(C) more intense block
(D) more difficult reversibility
(E) similar pharmacokinetics

A healthy, but obese, 110-kg woman is scheduled for gastric stapling. Compared with that required at her ideal weight, the dose of thiopental required for anesthetic induction would likely be increased because of changes in

(A) blood volume
(B) muscle mass
(C) circulation time
(D) body fat
(E) metabolic rate

BASIC Pharmacology & Pharmacokinetics

A 60-year-old man undergoing resection of an abdominal aortic aneurysm has an increase in measured mixed venous oxygen saturation from 70% to 90%. Which of the following is the most likely cause?

(A) Decreased cardiac output
(B) Decreased hematocrit
(C) Intrapulmonary shunting
(D) Right to left shunting at the atrial level
(E) Wedging of the pulmonary artery catheter

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

ADVANCED General Neuro

Compared with adults, neonates are more likely to become hypoxemic following anesthesia and extubation because of a relatively

(A) higher rate of oxygen consumption
(B) greater sensitivity to neuromuscular blockade
(C) larger Vd/Vt ratio
(D) lower blood pressure
(E) smaller functional residual capacity

ADVANCED Pediatric

A 40-year-old man is undergoing open reduction and internal fixation of a fractured femur. During anesthesia with fentanyl, sevoflurane, and oxygen, heart rate decreases to 20 bpm and 6 premature ventricular contractions per minute are noted. No pulse is detected. The most appropriate next step is to

(A) administer atropine
(B) administer epinephrine
(C) administer lidocaine
(D) apply a transthoracic pacemaker
(E) start cardiopulmonary resuscitation

BASIC General

Which of the following anesthetic techniques is most appropriate for a woman in the second stage of labor?

(A) Epidural opioids
(B) Local infiltration of the perineum
(C) Lumbar sympathetic block
(D) Paracervical nerve block
(E) Pudendal nerve block

ADVANCED OB Regional & Pain

Which of the following will most closely mimic the effects of stellate ganglion block?

(A) Axillary perivascular block with 25 mL of 1.5% lidocaine
(B) Cervical nerve block at C2-5 with 2 mL of 1.5% lidocaine
(C) Supraclavicular block at the level of the first rib with 25 mL of 1.5% lidocaine
(D) Block of the median, radial, ulnar, musculocutaneous, and intercostobrachial nerves
(E) Excision of thoracic sympathetic ganglia Tl-4

ADVANCED Regional & Pain

An air/oxygen blender with E-size cylinders is supplying gas to a Mapleson D circuit being used to ventilate a neonate during transport. The air tank is full (psi= 1900/625 L) and flow is 4 L/min. The oxygen tank flow is 5 L/min and the pressure gauge indicates 500 psi. If the flow rates remain unchanged, which of the following statements is correct?

(A) The air tank will be empty in 90 minutes
(B) The oxygen tank will be empty in 30 minutes
(C) The concentration of oxygen in the circuit is 60%
(D) The oxygen tank will fill with air when the pressure gauge falls below 50 psi
(E) The volume of oxygen remaining can be determined only by weighing the tank

BASIC Equipment & Physics

Pulmonary artery diastolic pressure is an unreliable indicator of left ventricular end-diastolic pressure in patients with

(A) acute cardiogenic pulmonary edema
(B) aortic stenosis
(C) acute mitral regurgitation
(D) myocardial ischemia
(E) severe emphysema

ADVANCED Equipment & Physics Cardiac