Anesthesia Hub -

10 Random Questions

Which of the following statements concerning use of temperature-corrected blood gas measurement (pH-stat) during hypothermic cardiopulmonary bypass is true?

(A) Blood gas analysis is performed at the patient's temperature
(B) Carbon dioxide should not be added to the bypass circuit
(C) The carbon dioxide content of the patient's blood is greater than it would be without temperature correction
(D) The incidence of postoperative neurologic deficits is increased compared with the alpha-stat method
(E) The patient's temperature should be maintained above 25°C

ADVANCED Cardiac

In an infant, spinal anesthesia to a sensory level of T8 is achieved with tetracaine administered at the L2-3 interspace. Compared with spinal anesthesia to the same sensory level in an adult, this anesthetic is associated with a

(A) greater decrease in blood pressure
(B) higher risk for neurotoxicity
(C) higher risk for systemic toxicity
(D) lower risk for spinal cord injury
(E) shorter duration of action

ADVANCED Pediatric Regional & Pain

During the first stage of labor, the pain of uterine contractions and cervical dilatation is transmitted via the spinal cord segments

(A) T6 to L1
(B) T6 to S5
(C) T10 to L1
(D) T10 to S1
(E) T10 to S5

ADVANCED OB

The two E oxygen cylinders on an anesthesia machine have pressure readings of 1100 psi each. At an oxygen flow of 3 L/min, there will be sufficient oxygen for approximately

(A) 2.5 hours
(B) 3.5 hours
(C) 5.5 hours
(D) 7 hours
(E) 8 hours

BASIC Equipment & Physics

Diplopia following lumbar puncture with a 25-gauge, 3 1/2-inch needle is the result of

(A) stretching the abducens nerve
(B) pressure on the optic nerve
(C) distortion of the oculomotor nucleus from collapse of the wall of the third ventricle
(D) the severity of the accompanying headache
(E) compensatory cerebral swelling

ADVANCED Regional & Pain

With respect to mechanical ventilation, which of the following statements concerning the portion of tidal volume known as compression volume is true?

(A) It is calculated by dividing the volume of gas delivered to the patient by the peak pressure
(B) It does not contribute to the volume of gas entering the patient
(C) It is not included in the volume measured by a spirometer on the inspiratory limb
(D) It decreases with the addition of a humidifier to the breathing circuit
(E) It decreases with the addition of one-way valves at the Y connector of the breathing circuit

BASIC Equipment & Physics

A 52-year-old man develops oliguria 24 hours after left hemicolectomy. Urinalysis shows a specific gravity of 1.028, an osmolality of 650 mOsm/L, and a sodium concentration of 10 mEq/L. Which of the following is the most likely diagnosis?

(A) Acute tubular necrosis
(B) Hypoaldosteronism
(C) Hypovolemia
(D) Interstitial renal disease
(E) Obstructive uropathy

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

ADVANCED OB

Which of the following can be used as a sole criterion for brain death?

(A) Absence of cerebral blood flow
(B) Absence of doll's eye movements
(C) Fixed, dilated pupils
(D) Isoelectric EEG
(E) Unresponsiveness to all externally applied stimuli

ADVANCED Neuro

Epidural block is safer at the L3-L4 interspace than at the T12-L1 interspace because of the location of the

(A) anterolateral epidural veins
(B) inferior border of the cauda equina
(C) inferior border of the conus medullaris
(D) inferior border of the subarachnoid space
(E) blood supply to the anterior spinal cord

BASIC Regional & Pain