There are 15 small boxes between R waves on an ECG tracing. What is the heart rate?
A) 150
B) 120
C) 100
D) 20
C
Health Professions
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How many leads are applied to the patient's body to obtain a 12-lead ECG tracing?
A) 6 B) 10 C) 12 D) 13
Health Professions
Which of the following statements is true concerning the operation of a transcutaneous carbon dioxide electrode?
a. PtcCO2 readings are slightly lower than the PaCO2 value. b. Electrodes should be calibrated when they are repositioned. c. Heating the transcutaneous PCO2 (PtcCO2) to 43°C will adversely affect its operation. d. Before its use, the electrode should be calibrated to 20% and 40% CO2.
Health Professions