Match each item to the correct description below.
-The P wave represents _____ depolarization.
A)Ventricular
B)Atrial
C)Repolarization
D)Augmented
E)Reciprocal changes
F)Indicative changes
G)Reentry
H)Ectopic
I)Positive
J)Amplitude
K)Voltmeter
L)Supranormal
M)Electrolyte

Question

Quizplus · Accepted Answer

The P wave represents atrial depolarization.

Answer: I
 A positive wave has a waveform that is above baseline.

Answer: J
 Amplitude refers to the height of a wave measured in millivolts (mV).

Answer: K
 A voltmeter is an instrument that measures electrical potential difference between two points in an electric circuit.

Answer: M
 An electrolyte is a substance containing ions capable of conducting electricity.

Answer: H
 An ectopic beat is an abnormal beat that arises from a site of the heart other than the sinus node.

Answer: G
 Reentry refers to the circular movement of an electrical impulse within the same region of the heart.

Answer: L
 Supranormal refers to a state in which the excitability of the heart muscle is increased, resulting in an enhanced response to stimuli.

Answer: A, C, E, F
 The P wave (B) represents atrial depolarization, not ventricular depolarization (A). The T wave (C) represents ventricular repolarization. Reciprocal changes (E) refer to changes in one ECG lead that occur in response to changes in another lead. Indicative changes (F) are changes on an ECG that suggest a particular diagnosis.

Match Each Item to the Correct Description Below