10 Random Questions


Prilocaine is NOT recommended for obstetric regional anesthesia because it

ADVANCED Pharmacology & Pharmacokinetics OB

A child undergoing general anesthesia is breathing spontaneously using the Jackson-Rees modification of the Ayres T-piece. Respiratory rate is 20/min and tidal volume is 75 ml. What is the minimum fresh gas flow required to prevent rebreathing?

ADVANCED Equipment & Physics Pediatric

A 40-year-old woman is undergoing a posterior fossa craniotomy in the sitting position for clipping of a basilar artery aneurysm. Nitroprusside is being used to maintain mean arterial pressure at 50 mmHg, measured at head level. During dissection, over the course of one minute, the mean blood pressure decreases to 30 mmHg. Simultaneously, end-tidal carbon dioxide and pulmonary artery pressures decrease and heart rate increases. The most likely cause of these changes is


The supine hypotensive syndrome of pregnancy

ADVANCED OB

A 46-year-old patient is undergoing resection of a posterior fossa tumor with the head elevated 10 cm above the level of the heart. During the procedure, the following changes in vital signs are observed. Which of the following is the most likely cause of the change in heart rate?


In which of the following clinical circumstances does down-regulation of beta-adrenergic receptors occur?


A patient receives 1.5% bupivacaine 40 ml and epinephrine 1:200,000 for axillary brachial plexus block for reduction of a forearm fracture. The tourniquet is inflated to 300 mmHg; 45 minutes later, the patient has pain that radiates to the posteromedial elbow. Which of the following nerves is NOT adequately blocked?

ADVANCED Regional & Pain

Which of the following is most likely to decrease in the affected area following a paravertebral lumbar sympathetic block?


Gravid uterine blood flow is

ADVANCED OB

Compared with adults, caudal anesthesia in children is associated with

ADVANCED Pediatric Regional & Pain