Second-Degree Heart Block Type I (Wenckebach)is Characterized by

question 13

Multiple Choice

Second-degree heart block type I (Wenckebach) is characterized by

• A) absent P waves.
• B) lengthening PR intervals and dropped P wave.
• C) constant PR interval and dropped QRS complexes.
• D) no correlation between P waves and QRS complexes.

---

Definitions:

Glycolysis

A metabolic process that breaks down glucose to form pyruvate, releasing energy and producing ATP.

NAD+

Nicotinamide adenine dinucleotide (NAD+) is a coenzyme found in all living cells that is central to metabolism and acts as an electron carrier helping to generate energy through the redox reactions.

NADH

Nicotinamide adenine dinucleotide (reduced form); a coenzyme involved in redox reactions, carrying electrons from one reaction to another in cellular respiration.

Monosaccharides

The simplest form of carbohydrates, consisting of single sugar molecules like glucose and fructose, serving as fundamental energy sources.