Anesthesia Hub -

10 Random Questions

The most sensitive means of detecting venous air embolism is

(A) precordial Doppler stethoscope
(B) transesophageal echocardiography
(C) end-tidal carbon dioxide measurement
(D) pulmonary artery pressure measurement
(E) central venous pressure measurement

During cardiopulmonary bypass, the perfusionist notes that the mixed venous oxygen saturation has decreased from to 55%. Which of the following is the most likely cause?

(A) Administration of a nitroprusside bolus
(B) Administration of a thiopental bolus
(C) Decrease in rectal temperature from 34°C to 28°C
(D) Inadequate muscle relaxation
(E) Increase in pump flow

ADVANCED Cardiac

A patient is undergoing a craniotomy in the sitting position. Mean arterial pressure measures 80 mmHg from a radial artery catheter located 27 cm below the right atrium and a transducer located, zeroed, and calibrated at the level of the right atrium. The circle of Willis is 27 cm above the right atrium. Intracranial pressure is 0 cmH20 and right atrial pressure is 5 cmH20. The cerebral perfusion pressure in mmHg is

(A) 75
(B) 60
(C) 53
(D) 48
(E) 26

Each of the following factors decreases uterine blood flow EXCEPT

(A) aortocaval compression
(B) hypocarbia
(C) hypoxia
(D) sympathetic block
(E) uterine contractions

ADVANCED OB

In calculating the fluid requirements for a newborn undergoing repair of an omphalocele, the third-space loss should be replaced by

(A) 0.9% saline solution
(B) 2.5% dextrose in 0.45% saline solution
(C) 5% dextrose in lactated Ringer's solution
(D) 5% dextrose in water
(E) 5% dextrose in 0.25% saline solution

ADVANCED Pediatric

Immediately following radical prostatectomy, ketorolac administered for analgesia

(A) aggravates ileus and bladder spasm
(B) increases platelet adhesion
(C) is ideally suited for patient-controlled analgesia
(D) mediates its effects via kappa opioid receptors
(E) produces cyclooxygenase inhibition

Which of the following statements concerning caudal anesthesia in children is true?

(A) The dural sac extends further caudad than in adults
(B) Delay of postoperative micturition occurs in most patients
(C) The sensory level of analgesia is poorly correlated with the dose of local anesthetic
(D) It is technically difficult because of poorly defined sacral anatomy
(E) It is contraindicated in infants younger than 1 year of age

ADVANCED Pediatric Regional & Pain

Compared with halothane, desflurane has which of the following characteristics?

(A) Greater potency
(B) A higher boiling point
(C) Increased blood solubility
(D) Less airway irritability
(E) Less biodegradation

BASIC Pharmacology & Pharmacokinetics

Administration of succinylcholine 1 mg/kg to a pregnant woman rarely causes fetal neuromuscular blockade. Which characteristic of succinylcholine best explains this phenomenon?

(A) High protein binding
(B) Ionization
(C) Lack of passive placental diffusion
(D) Lipid solubility
(E) Metabolism in the fetal liver

ADVANCED Pharmacology & Pharmacokinetics OB

Which of the following is the most common initial sign of hemolytic transfusion reaction during general anesthesia?

(A) Bronchospasm
(B) Diffuse bleeding
(C) Fever
(D) Hemoglobinuria
(E) Hypotension

BASIC Transfusions & Fluids General