Which of the Following Is Characteristic of an ECG Tracing

question 16

Multiple Choice

Which of the following is characteristic of an ECG tracing for a first-degree heart block?

• A)The PR intervals are greater than 0.20 seconds in duration.
• B)The P waves are inverted.
• C)Not all of the P waves are followed by QRS complexes.
• D)The underlying rhythm is slow.

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Definitions:

Acid-Base Balance

The homeostatic regulation of the pH levels in the body fluids, essential for maintaining vital bodily functions.

Carbonic Acid

A weak acid formed in solution when carbon dioxide is dissolved in water, playing a critical role in the buffering system of the blood.

Acid-Base Balance

The mechanism by which the human body maintains its blood pH within a narrow range, crucial for normal bodily functions.

Metabolic Acidosis

A condition characterized by a deficiency of bicarbonate ions in the body in relation to the amount of carbonic acid in the body, in which the pH falls to lower than 7.35.