Which of the following ECG findings would indicate a possible pacemaker failure?
A) Occasional QRS complexes without pacer spikes
B) A QRS duration of 0.20 seconds
C) Pacemaker spikes without associated QRS complexes
D) A pacemaker spike preceding each P wave
C
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Which of the following is not a description of critical thinking?
A) Getting at the truth and avoiding being deceived B) Weighing reasons to believe against reasons to doubt C) Looking for objective evidence and exaggeration D) Accepting things at face value
A Class IIIB combustible liquid has a flashpoint of
a. less than 100° F. b. less than 73° F. c. more than 100° F but less than 140° F. d. more than 200° F.
Which is a cause or trigger of malignant hyperthermia (MH)?
a. Excessive heat in the OR suite b. Nondepolarizing muscle relaxants c. Depolarizing skeletal muscle relaxants d. Unexplained preoperative fever
An infant should not be suctioned for more than
(A) 15 seconds. (B) 5 seconds. (C) 10 seconds. (D) 20 seconds.