10 Random Questions
Which of the following time concentration curves would be expected in arterial blood following intravenous injection of indocyanine green dye in a 3-year-old child with a small ventricular septal defect?
Each of the following is an effect of rapid infusion of mannitol EXCEPT
- (A) depletion of electrolytes
- (B) impaired platelet adhesiveness
- (C) increased intracranial pressure
- (D) increased intravascular fluid volume
- (E) increased renal blood flow
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
Compared with thiopental, etomidate causes
- (A) greater histamine release
- (B) greater myocardial depression
- (C) greater myoclonic activity
- (D) increased seizure threshold
- (E) less nausea
Which of the following statements concerning the use of epidural anesthesia for extracorporeal shock wave lithotripsy is true?
- (A) Adequate anesthesia can be obtained with fentanyl alone
- (B) Anesthesia decreases the incidence of hypothermia
- (C) Anesthesia decreases the incidence of ventricular dysrhythmias
- (D) Anesthesia is unnecessary in paraplegics with absence of sensation below T4
- (E) "Loss of resistance" should be performed with fluids rather than air
Twenty minutes after thiopental induction for femoral herniorrhaphy, a 34-year-old woman is breathing spontaneously and receiving nitrous oxide-oxygen (2 liters each) and enflurane 3% by face mask. Pulse is 90 bpm, blood pressure is 80/60 mmHg, end-tidal enflurane concentration is 2%, and end-tidal carbon dioxide tension is 48 mmHg. Which of the following is most likely to occur on skin incision?
- (A) Pupillary dilation
- (B) Laryngeal stridor
- (C) Gross muscular movement
- (D) Increased blood pressure
- (E) No response
Immediately after sustaining severe head injury, a 20-year-old man has a blood pressure of 150/90 mmHg and an intracranial pressure of 35 mmHg. After one hour of thiopental infusion, blood pressure is 105/60 mmHg, intracranial pres sure is 20 mmHg, central venous pressure is 5 mmHg, and temperature is 36°C. The EEG shows slow-wave activity. The most appropriate next step is administration of
- (A) additional thiopental
- (B) a corticosteroid
- (C) furosemide
- (D) nimodipine
- (E) phenylephrine
A 10-week-old infant born at 28 weeks gestation is scheduled for elective repair of bilateral inguinal hernias. It is most appropriate to
- (A) delay the operation until the infant is 6 months old
- (B) transfuse blood preoperatively if hemoglobin concentration is 9 g/dl
- (C) avoid tracheal intubation
- (D) limit inspired oxygen concentration to less than 50%
- (E) monitor for apnea for 24 hours postoperatively
Forty-eight hours after thoracotomy, a patient's T6-7 epidural catheter is removed and the distal 2 cm is noted to be missing. The patient felt no pain during removal and neurologic examination shows no abnormalities. After informing the patient, which of the following is the most appropriate next step in management?
- (A) Observation
- (B) Culture of cerebrospinal fluid
- (C) MRI of the thoracic spine
- (D) Myelography
- (E) Surgical removal of the catheter
Which of the following chemotherapeutic drugs is a cause of pulmonary fibrosis?
- (A) Bleomycin
- (B) Cisplatin
- (C) Cyclosporine
- (D) Daunorubicin
- (E) Vincristine