10 Random Questions
Following axillary block for insertion of an arteriovenous fistula in the forearm, a patient has pain on surgical incision. Which of the following nerves should be blocked to relieve this pain?
- (A) Axillary
- (B) Median
- (C) Musculocutaneous
- (D) Radial
- (E) Ulnar
Each of the following values is associated with acute tubular necrosis EXCEPT
- (A) urine osmolality of 200 mOsm/kg
- (B) urine sodium concentration of 15 mEq/L
- (C) urine specific gravity of 1.009
- (D) urine/serum osmolarity ratio of 1.2
- (E) fractional excretion of sodium of 4%
The capnographic tracing is from a 2-month-old infant anesthetized using a pediatric circle system and mask at a fresh gas flow of 4 L/min. The sampling port is in the elbow connector. This tracing indicates
- (A) adequate alveolar ventilation
- (B) exhausted soda lime
- (C) expired halothane concentrations representative of alveolar concentrations
- (D) mixing of inspired and expired gases
- (E) the need to change to a Mapleson D circuit
Which of the following findings best indicates complete resolution of spinal anesthesia?
- (A) Ability to ambulate
- (B) Ability to urinate
- (C) Perianal pinprick sensation
- (D) Pain at the surgical site
- (E) Proprioception of the big toe
A 13-year-old African American boy has severe abdominal pain after debridement of an open fracture of the lower extremity. His hemoglobin concentration is 10 g/dl and a peripheral blood smear shows elongated crescent-shaped erythrocytes. The most appropriate initial therapy is
- (A) sodium bicarbonate administration
- (B) dopamine infusion
- (C) blood transfusion
- (D) volume loading with crystalloid
- (E) high-dose corticosteroid administration
Recognized side effects of magnesium sulfate used for the treatment of preeclampsia that would be of anesthetic concern include each of the following EXCEPT
- (A) maternal pulmonary edema
- (B) neonatal hypotonia
- (C) increased maternal sensitivity to succinylcholine
- (D) increased maternal sensitivity to vecuronium
- (E) maternal hypokalemia
Ninety minutes after administration of succinylcholine 1 mg/kg to a 28-year-old woman, the train-of-four shows a T4:T1 ratio of 25%. This is most consistent with
- (A) dibucaine number of 30
- (B) hypersensitivity to succinylmonocholine
- (C) pregnancy
- (D) pretreatment with pancuronium 2 mg
- (E) severe cirrhosis
A 26-year-old woman is hospitalized in early labor at 38 weeks' gestation. Vaginal bleeding occurred prior to admission. Systemic blood pressure remains 140/80 mmHg during intravenous infusion of fluids. Which of the following factors would contraindicate epidural anesthesia for labor at this time?
- (A) Early fetal heart rate decelerations
- (B) Hematocrit of 29%
- (C) Blood pressure of 110/75 mmHg when sitting
- (D) Platelet count of 100,000/mm3
- (E) Increased respiratory rate
At the time of cesarean delivery, thick dark meconium is noted and the newborn is flaccid, apneic, bradycardic, and cyanotic. The most appropriate initial action is
- (A) atropine administration
- (B) sodium bicarbonate administration
- (C) naloxone administration
- (D) controlled ventilation
- (E) tracheal suctioning
Following pneumonectomy, a paralyzed patient being mechanically ventilated has the following arterial blood gas values: PaO2 71 mmHg, PaCO2 55 mmHg, pH 7.29. SvO2 is 45%. The most likely explanation for this SvO2 is
- (A) decreased red cell mass
- (B) high cardiac output
- (C) hypothermia
- (D) peripheral left-to-right arteriovenous shunt
- (E) ventilation / perfusion mismatch