10 Random Questions
The cardiovascular effects of an inhalational anesthetic are evaluated in 10 normal volunteers in the awake resting state and after 15 minutes of constant inspired concentration. Results were analyzed by t-test for paired data and are presented below as mean +/- standard deviation. Based on these data, which of the following conclusions is most valid?
- (A) A decrease in cardiac output would have been evident if more subjects were included in the study
- (B) The anesthetic decreases mean arterial pressure
- (C) The anesthetic does not cause cardiac depression
- (D) The anesthetic is unsafe for patients with coronary after disease
- (E) There is a 95% to 100% chance that the anesthetic increases heart rate
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
A celiac plexus block effectively relieves pain at which of the following sites?
- (A) Abdominal viscera above the pelvis
- (B) Parietal peritoneum above the pelvis
- (C) Pelvic parietal peritoneum
- (D) Pelvic viscera
- (E) Visceral pleura
During transurethral resection of the prostate, intravascular absorption of glycine irrigant most commonly produces
- (A) alkalosis
- (B) hemolysis
- (C) hypertension
- (D) tachycardia
- (E) wheezing
The following breath sounds are heard after placement of a left-sided double-lumen endobronchial tube. The most likely cause of these findings is
- (A) presence of both lumens in the right mainstem bronchus
- (B) presence of both lumens in the left mainstem bronchus
- (C) presence of both lumens in the trachea
- (D) herniation of the bronchial cuff at the bifurcation of the trachea
- (E) presence of the bronchial lumen in the right mainstem bronchus
Which of the following is characteristic of low back pain associated with myofascial pain syndrome but not of pain associated with a herniated lumbar disk?
- (A) Loss of reflexes in the lower extremities
- (B) Pain along the distribution of nerve roots
- (C) Responsiveness to epidural corticosteroids
- (D) Sensitivity to injection at trigger points
- (E) Trophic alteration in the sympathetic nervous system
Which of the following cardiovascular abnormalities is LEAST likely to be present in a patient with end-stage alcoholic cirrhosis?
- (A) Decreased myocardial contractility
- (B) High cardiac index
- (C) High mixed venous oxygen saturation
- (D) Increased peripheral vascular resistance
- (E) Low blood viscosity
Each of the following factors decreases uterine blood flow EXCEPT
- (A) aortocaval compression
- (B) hypocarbia
- (C) hypoxia
- (D) sympathetic block
- (E) uterine contractions
A burn is found at the site of the electrocautery pad. Which of the following is most likely?
- (A) The electrosurgical unit was in the bipolar mode
- (B) The electrocautery pad became partially detached
- (C) The electrosurgical unit ground wire was severed
- (D) The line-isolation monitor alarmed
- (E) The patient became grounded
A 20-year-old man is scheduled for emergency laparotomy for an abdominal stab wound. Ten minutes after induction with oxygen, thiopental, and succinylcholine, blood pressure is 220/120 mmHg and esophageal temperature is 39°C. ST-segment depression of 4 mm is noted in ECG lead V5. Which of the following is the most likely cause?
- (A) Adrenal laceration
- (B) Cocaine intoxication
- (C) Inadequate anesthesia
- (D) Malignant hyperthermia
- (E) Small cardiac puncture