In a 35-year-old patient, which of the following is associated with an increased duration of clinical narcosis following infusion of a total dose of 10 mg/kg thiopental over three hours?
Each of the following would slow induction with a volatile anesthetic agent EXCEPT
(A) hypoalbuminemia
(B) hyperlipemia
(C) clean rubber tubing in the circle system
(D) fresh soda lime
(E) obesity
A
In a patient with 20% pulmonary shunt and a PaO2 of 60 mmHg, cardiac output suddenly decreases from 5 L/min to 3 L/min. Oxygen consumption is unchanged. As a result, the PaO2 will
(A) increase slightly because of decreased shunt blood flow
(B) decrease slightly because of decreased mixed venous PO2
(C) increase because of decreased affinity of hemoglobin for oxygen
(D) decrease because of an increased dead space to tidal volume ratio
(E) increase because of increased pulmonary oxygen uptake per milliliter of blood
A 25-year-old woman is receiving magnesium sulfate for eclampsia at 36 weeks' gestation. Each of the following is a maternal effect of this treatment EXCEPT
(A) sedation
(B) sensitization to depolarizing muscle relaxants
(C) sensitization to nondepolarizing muscle relaxants
(D) decreased uterine blood flow
(E) loss of deep tendon reflexes prior to significant cardiac dysfunction
D
The laryngeal mask airway
(A) causes more hemodynamic stimulation than an oropharyngeal airway
(B) is contraindicated in patients with cervical spine instability
(C) is more easily inserted when cricoid pressure is applied
(D) may serve as a temporary airway in case of a failed rapid sequence intubation
(E) requires administration of a muscle relaxant to avoid laryngospasm during insertion