Outline the typical pathophysiology of heart failure. Onset of heart failure usually can be traced to damage from an MI and atherosclerosis. Is this consistent with Mrs. Maney's history?

What will be an ideal response?


• Many different events can lead to the development of congestive heart failure.
• Previous myocardial infarction, valve defect, or increased work demand on the heart from other conditions such as hypertension all can damage the heart.
• This damage results in a decreased ability of the heart to pump adequately.
• When there is reduced blood flow to tissues, the body compensates in several ways.
• The kidney responds to decreased blood flow by secreting renin and aldosterone, causing vasoconstriction and an increase in blood volume.
• The heart then has to work even harder to handle the increased blood volume.
• Over time, the heart enlarges (cardiomegaly) with its attempt to handle the increased workload.
• Cardiac output and stroke volume decrease.
• Compensation mechanisms do work for a time but eventually the heart muscle weakens.
• Dr. Maney's medical history is consistent with the typical pathophysiology of heart failure. She has a long history of coronary artery disease, hypertension, and mitral valve disorder. She also experienced a myocardial infarction. Her previous medical diagnoses are all indicative of damage to the heart muscle, which is the first step in the progression of heart failure.

Nutritional Science

You might also like to view...

Which of the following is a characteristic of fish consumption?

a. Fish is a good source of iron b. Fatty fish contain the highest amounts of omega-3 fatty acids c. The minimum intake to gain any benefit is 3 servings per week d. Even fried fish from fast-food restaurants provide a favorable balance of omega-6 and omega-3 fats

Nutritional Science

Human subjects usually must provide their consent before they may participate in a study

Indicate whether the statement is true or false

Nutritional Science

When proteins are metabolized in the body, the average caloric value is estimated to be ____ kcal/g

A) 4.2 B) 5.7 C) 7.0 D) 9.4

Nutritional Science

Rigid adherence to attaining a given scale weight or body composition is never recommended

Indicate whether the statement is true or false

Nutritional Science