10 Random Questions
A 26-year-old woman has persistent uterine bleeding following a normal spontaneous delivery without anesthesia. The uterus is firm on manual examination. Which of the following anesthetics is most appropriate for manual extraction of the placenta?
- (A) Halothane
- (B) Pudendal block with lidocaine
- (C) Subarachnoid tetracaine
- (D) Thiopental
- (E) Vecuronium
During repair for coarctation of the aorta in a healthy 13-year-old patient, right radial artery pressure increases from 100/60 to 105/70 mmHg after the aorta is cross clamped. This most likely indicates that
- (A) collateral blood flow has decreased the hemodynamic consequences of cross-clamping
- (B) left ventricular hypertrophy has decreased left ventricular compliance
- (C) spinal cord blood flow is impaired
- (D) the coarctation has decreased aortic diameter less than 50%
- (E) the coarctation involves the origin of the right subclavian artery
Compared with intermittent positive pressure ventilation (IPPV), intermittent mandatory ventilation (IMV)
- (A) better maintains cardiac output
- (B) provides less than full mechanical ventilatory support
- (C) requires a greater level of sedation
- (D) requires a higher FlO2
- (E) requires a lower inspiratory flow rate
Mismatching of ventilation to perfusion in the lung is greatest in which of the following situations?
- (A) Awake patient, spontaneous ventilation, lateral decubitus position
- (B) Anesthetized patient, controlled ventilation, supine position
- (C) Anesthetized patient, controlled ventilation, lateral decubitus position
- (D) Anesthetized patient, controlled ventilation, sitting position
- (E) Anesthetized patient, spontaneous ventilation, prone position
A 70-year-old patient is shivering and has chest pain in the PACU following a cholecystectomy. Heart rate is 120 bpm, and blood pressure is 220/120 mmHg. SpO2 is 97% at an FiO2 of 0.4. An ECG shows ST-T wave changes, which are not affected by intravenous administration of nitroglycerin. Which of the following is the most appropriate next step?
- (A) Administration of esmolol
- (B) Administration of hydralazine
- (C) Administration of nitroprusside
- (D) Application of a warming blanket
- (E) Increasing FiO2
Which of the following findings is most likely in a 3-year-old child who has a secundum-type atrial septal defect with a 2:1 left-to-right shunt?
- (A) Pulmonary blood flow twice that of systemic blood flow
- (B) Pulmonary vascular resistance twice normal
- (C) Mean pulmonary artery pressure twice normal
- (D) Right atrial pressure twice normal
- (E) Hypoxemia while breathing room air
A multigravid woman is receiving oxytocin by infusion for augmentation of labor. Fetal heart rate is 190 bpm with beat-to-beat variability of 6 to 8 bpm. The most appropriate immediate action would be to
- (A) continue observation
- (B) sample fetal scalp blood
- (C) discontinue oxytocics
- (D) administer a beta-adrenergic blocker to the mother
- (E) deliver the fetus
In this diagram of a circle system, an increase in dead space is most likely to result from placement of the pressure relief valve at location
- (A) 1
- (B) 2
- (C) 3
- (D) 4
- (E) 5
Alveolar dead space is decreased by
- (A) halothane anesthesia
- (B) positive end-expiratory pressure
- (C) deliberate hypotension
- (D) atropine premedication
- (E) decreased tidal volume
A 40-year-old woman with chronic renal failure is undergoing revision of an arteriovenous shunt with general anesthesia. The capnographic waveform was obtained during spontaneous ventilation 20 minutes after administration of succinylcholine and tracheal intubation. Which of the following is the most likely cause of these findings?
- (A) Leaking endotracheal cuff
- (B) Channeling of soda lime
- (C) Light anesthesia
- (D) Metabolic acidosis
- (E) Residual neuromuscular block