Anesthesia Hub -

10 Random Questions

Early deceleration of fetal heart rate

(A) correlates with high concentrations of local anesthetic in maternal blood
(B) frequently occurs with fetal scalp pH greater than 7.25
(C) indicates need for immediate cesarean delivery
(D) indicates subclinical uteroplacental insufficiency
(E) predicts low Apgar scores at delivery

An otherwise healthy 16-year-old girl is undergoing posterior spinal fusion for thoracolumbar scoliosis. During the procedure, the most likely cause of a marked decrease in the amplitude of the somatosensory evoked potentials after stimulation of the posterior tibial nerve is

(A) administration of fentanyl 30 jag /kg for induction
(B) administration of isoflurane 1.3 MAC for maintenance
(C) administration of vecuronium 0.15 mg/kg
(D) a decrease in body temperature from 37 to 35°C
(E) a decrease in cerebrospinal fluid pressure

ADVANCED Equipment & Physics Pediatric Neuro

After removing the electrocautery pad from the thigh, a burn is noted at that site. Which of the following most likely contributed to this injury?

(A) A line-isolation monitor fault
(B) Current leak from the EKG module
(C) Defective grounding of the electrocautery unit
(D) Dried gel on the electrocautery pad
(E) Excessive current setting for cutting mode

BASIC Equipment & Physics

A newly developed inhalational anesthetic has a blood-gas partition coefficient of 0.2. Which of the following statements best describes this drug compared with isoflurane?

(A) MAC is lower
(B) The difference between Fa and Fl during maintenance of anesthesia is greater
(C) Time to emergence is shorter
(D) Rapid induction requires greater overpressure
(E) Equilibrium in a circle system with the same flow of fresh gas is slower

BASIC Pharmacology & Pharmacokinetics

Local anesthetics block nerve impulses through which of the following mechanisms of action?

(A) Decreasing ATP in neuronal cell membranes
(B) Decreasing the neuronal resting membrane potential
(C) Increasing extracellular calcium concentration
(D) Inhibiting sodium ion influx across the neuronal cell membrane
(E) Opening sodium channels at the nodes of Ranvier

A 62-year-old man is scheduled for coronary artery bypass grafting. During induction of anesthesia with fentanyl, high peak inspiratory pressures occur with manual ventilation, and peripheral oxygen saturation decreases from 100% to 94%. The most appropriate management is administration of

(A) albuterol
(B) isoflurane
(C) midazolam
(D) nitroglycerin
(E) succinylcholine

BASIC Pharmacology & Pharmacokinetics

A radial artery catheter is to be used for blood pressure measurement during a sitting craniotomy. When zeroing the transducer, which of the following describes the best levels for placement of the transducer and opening of the system to air? (Transducer, Opening to Air)

(A) Head Wrist
(B) Head Head
(C) Head Heart
(D) Heart Heart
(E) Heart Wrist

BASIC Equipment & Physics Neuro

A 50-year-old woman with subarachnoid hemorrhage and left hemiparesis undergoes clipping of a right cerebral aneurysm. On the second postoperative day, mental status deteriorates. Blood pressure is 110/70 mmHg. A cerebral angiogram shows vasospasm. The most appropriate management is to

(A) administer dexamethasone
(B) administer mannitol
(C) administer phentolamine
(D) expand intravascular volume
(E) intubate and hyperventilate to a PaC02 of 28 mmHg

Meperidine has a more rapid onset of action than morphine following intravenous injection because of its

(A) lesser ionization
(B) greater lipid solubility
(C) lesser protein binding
(D) smaller volume of distribution
(E) slower rate of hepatic clearance

BASIC Pharmacology & Pharmacokinetics

Which of the following statements concerning anesthesia machine flowmeters is true?

(A) At high gas flows, viscosity is the predominant determinant of flow rate
(B) At low flow rates, gas density is the predominant determinant of flow rate
(C) Flowmeters should be upstream from the oxygen fail-safe device
(D) The oxygen flowmeter should be upstream from other flowmeters
(E) Tapered flow tubes allow a constant decrease in pressure across the float

BASIC Equipment & Physics