10 Random Questions
Ketamine decreases
(A) bronchomotor tone
(B) intracranial pressure
(C) intraocular pressure
(D) salivation
(E) seizure threshold
Reveal Answer
BASIC
Pharmacology & Pharmacokinetics
The test dose of local anesthetic administered through an epidural needle or catheter should be sufficient to produce
(A) bradycardia
(B) seizure activity
(C) hypotension
(D) segmental analgesia
(E) spinal anesthesia
Reveal Answer
BASIC
OB
Regional & Pain
Which of the following is the most appropriate initial management of a patient with hypotension secondary to sepsis?
(A) Calcium chloride
(B) Corticosteroids
(C) Crystalloid infusion
(D) Dopamine
(E) Fresh frozen plasma
Reveal Answer
BASIC
Respiratory & Critical Care
General
In patients with pregnancy-induced hypertension, magnesium sulfate is most likely to
(A) decrease maternal heart rate
(B) decrease sensitivity to relaxants
(C) decrease succinylcholine-induced fasciculations
(D) prevent hypokalemia
(E) produce fetal bradycardia
Reveal Answer
ADVANCED
OB
Which of the following is the correct sequence of anatomic structures encountered when using a paramedian approach for lumbar spinal anesthesia?
(A) Ligamentum flavum — dura mater — arachnoid mater
(B) Interspinous ligament — ligamentum flavum — dura mater — arachnoid mater
(C) Posterior longitudinal ligament — ligamentum flavum — dura mater — arachnoid mater
(D) Anterior longitudinal ligament — ligamentum flavum — dura mater — arachnoid mater
(E) Ligamentum flavum — dura mater — pia mater — arachnoid mater
Reveal Answer
BASIC
Regional & Pain
The primary mechanism for respiratory arrest following a spinal anesthetic to T2 is
(A) block of carotid chemoreceptors
(B) direct effect of local anesthetic on the medulla
(C) ischemia of respiratory centers in the medulla
(D) paralysis of the diaphragm by neural block
(E) paralysis of intercostal muscles
Reveal Answer
A patient is hyperventilated to a PaC02 of 20 mmHg. Which of the following physiologic parameters is most likely to be increased?
(A) Airway resistance
(B) Myocardial contractility
(C) Oxygen delivery to tissues
(D) Pulmonary vascular resistance
(E) Serum ionized calcium concentration
Reveal Answer
In normal tissue, which property of drugs has the greatest effect on the speed of onset of a local anesthetic?
(A) Amide structure
(B) Degree of protein binding
(C) Intrinsic vasoconstrictor activity
(D) pKa
(E) Potency
Reveal Answer
BASIC
Pharmacology & Pharmacokinetics
After a gastric stapling procedure, a 150-kg woman is extubated and breathing spontaneously in the recovery room at a rate of 26/min and an FiO2 of 0.5. Arterial blood gas analysis shows PaO2 96 mmHg, PaCO2 44 mmHg, and pH 7.37. The parameter most closely related to her increased alveolar-arterial oxygen tension gradient is
(A) decreased expiratory reserve volume
(B) decreased minute volume
(C) decreased residual volume
(D) decreased total lung capacity
(E) rapid respiratory rate
Reveal Answer
BASIC
Respiratory & Critical Care
Trimethaphan causes each of the following EXCEPT
(A) cerebral vasodilation
(B) urinary retention
(C) pupillary cycloplegia
(D) histamine release
(E) potentiation of succinylcholine block
Reveal Answer
BASIC
Pharmacology & Pharmacokinetics