Anesthesia Hub -

10 Random Questions

With direct arterial blood pressure monitoring

(A) systolic pressure in the aortic root exceeds that in the radial artery
(B) mean and diastolic pressures are lower in the dorsalis pedis artery than in the aortic root
(C) the dicrotic notch is not clearly found on femoral arterial waveforms
(D) an underdamped waveform is characteristic of bubbles in the system
(E) longer tubing between artery and transducer artifactually augments systolic pressure

BASIC Equipment & Physics

A 90-kg, 59-year-old man with chronic obstructive pulmonary disease is undergoing laparotomy. Mechanical ventilation is being carried out with a fresh gas flow of 2 L/min at a rate of 16/min and tidal volume of 900 ml; I:E ratio is 1:2.5. PaCO2 remains greater than 50 mmHg. Preoperative PaCO2, was normal. Which of the following is the most appropriate next step?

(A) Adding 10 cmH20 of positive end-expiratory pressure
(B) Converting to spontaneous ventilation
(C) Decreasing inspiratory flow rate
(D) Increasing exhalation time
(E) Increasing fresh gas flow

ADVANCED Respiratory & Critical Care General

After inflation of both the tracheal and endobronchial cuffs of a left-sided double-lumen tube, the following are noted on auscultation of the chest: Left lumen clamped --> Breath sounds absent bilaterally; Right lumen clamped --> Breath sounds present on left only; Both lumens open --> Breath sounds present on left only. The most appropriate action is to

(A) decrease the endobronchial cuff volume
(B) decrease the tracheal cuff volume
(C) reinsert the tube, rotating it 180 degrees to the right
(D) suction both lumens
(E) withdraw the tube slightly and repeat the auscultory maneuvers

BASIC Equipment & Physics

Which of the following statements concerning myasthenia gravis is true?

(A) Neostigmine is inappropriate for antagonism of neuromuscular blockade
(B) The number of acetylcholine receptors is decreased
(C) Plasma cholinesterase concentration is decreased
(D) The risk for malignant hyperthermia is increased
(E) Succinylcholine is contraindicated

ADVANCED General

In an adult undergoing laparotomy, which of the following is the most effective means of maintaining body temperature during the first hour of anesthesia?

(A) Increasing ambient temperature
(B) Using a warming blanket
(C) Warming inspired gases
(D) Warming intravenous fluids
(E) Warming irrigating fluids

The recommended agent for decontamination of anesthetic equipment splattered with blood containing HIV is

(A) household bleach
(B) hydrogen peroxide
(C) iodine solution
(D) isopropyl alcohol
(E) Lysol solution

A 26-year-old patient with multiple trauma is admitted to the intensive care unit postoperatively. The early development of polyuria, hypotension, low urine sodium excretion, high serum osmolality, and normal serum creatinine concentration is best explained by

(A) adrenal insufficiency
(B) fluoride-induced high-output renal failure
(C) inappropriate ADH secretion
(D) intraoperative fluid overload
(E) posterior pituitary insufficiency

ADVANCED General

Which of the following statements concerning the management of diabetes mellitus during pregnancy is true?

(A) Insulin requirements remain essentially unchanged during pregnancy
(B) Maternal blood glucose concentration of 200 mg/dL is optimal
(C) Maternal hyperglycemia may cause neonatal acidosis
(D) Neonatal hyperglycemia is common
(E) Infants delivered under general anesthesia have lower Apgar scores than those delivered under spinal anesthesia

ADVANCED OB

A 50-year-old woman notes loss of sensation in the medial lower leg 24 hours after vaginal hysterectomy in the lithotomy position. Which of the following nerves is most likely to be injured?

(A) Lateral femoral cutaneous
(B) Obturator
(C) Peroneal
(D) Saphenous
(E) Tibial

A 48-year-old woman with von Willebrand's disease is scheduled for a hysterectomy. The most appropriate initial preoperative therapy to decrease bleeding is administration of

(A) cryoprecipitate
(B) desmopressin (DDAVP)
(C) fresh frozen plasma
(D) platelets
(E) vitamin K

BASIC Transfusions & Fluids General