10 Random Questions
The most likely cause of this capnographic tracing obtained just after laryngoscopy and intubation is
- (A) esophageal intubation
- (B) partial obstruction of the endotracheal tube
- (C) pulmonary embolus
- (D) insertion of an endotracheal nasogastric tube
- (E) mild bronchospasm
The induction dose of thiopental should be decreased in each of the following situations EXCEPT
- (A) age greater than 70 years
- (B) cardiogenic shock
- (C) decreased hepatic blood flow
- (D) hypoalbuminemia
- (E) hypothyroidism
A 28-year-old woman receives a lumbar epidural anesthetic for uncomplicated labor and delivery. During removal of the catheter, 1 cm breaks off and remains in her back. After informing the patient, the most appropriate management is
- (A) no intervention unless symptoms occur
- (B) prophylactic antibiotics
- (C) epidural corticosteroids
- (D) dye contrast study of the epidural space
- (E) neurosurgical exploration
The initial reduction in core temperature during general anesthesia is caused by
- (A) ablation of thermoregulatory vasoconstriction
- (B) conductive heat loss
- (C) evaporative heat loss in the respiratory tract
- (D) neuromuscular blockade
- (E) redistribution of heat from the core to the periphery
During induction of anesthesia for cesarean delivery, pancuronium is inadvertently substituted for succinylcholine. The neonate shows no clinical signs of muscle relaxation because pancuronium is
- (A) highly ionized
- (B) highly protein bound
- (C) a large molecule
- (D) lipid soluble
- (E) unaffected by "ion trapping"
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
A patient has a seizure within seconds after receiving a retrobulbar injection of 0.5% bupivacaine with epinephrine 1:200,000. Which of the following is the most likely cause?
- (A) Air embolism
- (B) Oculocardiac reflex
- (C) Ophthalmic artery injection
- (D) Retrobulbar hemorrhage
- (E) Subdural injection
A patient has severe pain after total knee arthroplasty. Systemic opioids are most likely to modify the pain through action at which of the following sites?
- (A) Corpus callosum
- (B) Hippocampus
- (C) Substantia gelatinosa
- (D) Substantia nigra
- (E) Ventral horn of the spinal cord
The most likely effect of a celiac plexus block for an abdominal operation is
- (A) bowel distention
- (B) hypotension
- (C) incisional analgesia
- (D) muscle relaxation
- (E) urinary retention
Which of the following is the most likely sequela of interscalene brachial plexus block?
- (A) Cervical epidural block
- (B) Hemidiaphragmatic paralysis
- (C) Pneumothorax
- (D) Seizure
- (E) Vocal cord paralysis