A nurse educator is discussing what happens when cardiac cells die. Which consequences are appropriate for the educator to include in the discussion?
Standard Text: Select all that apply.
1. Fibrotic scar tissue formation
2. Impaired cardiac function
3. Extensive branching
4. Impaired cardiac contraction
5. Left ventricular hypertrophy
Correct Answer: 1,2,4,5
Rationale 1: If a large area of the myocardium becomes deprived of oxygen and undergoes necrosis, the cells are replaced by fibrotic scar tissue.
Rationale 2: If a large area of the myocardium becomes deprived of oxygen and undergoes necrosis, impaired cardiac function can occur.
Rationale 3: Extensive branching is not a consequence of cardiac cell death.
Rationale 4: If a large area becomes deprived of oxygen and undergoes necrosis, the different regions of the heart may not contract in a coordinated manner because conduction of the electrical potential may skip over spots on the myocardium where no conduction occurs.
Rationale 5: During heart failure, the size of the left ventricle and the thickness of the myocardial layer in this chamber can increase in size in clients, which is a condition known as left ventricular hypertrophy.
Global Rationale: If a large area of the myocardium becomes deprived of oxygen and undergoes necrosis, the cells are replaced by fibrotic scar tissue and impaired cardiac function can occur. If a large area becomes deprived of oxygen and undergoes necrosis, the different regions of the heart may not contract in a coordinated manner because conduction of the electrical potential may skip over spots on the myocardium where no conduction occurs. During heart failure, the size of the left ventricle and the thickness of the myocardial layer in this chamber can increase in size in clients, which is a condition known as left ventricular hypertrophy. Extensive branching is not a consequence of cardiac cell death.
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