Chap: 24 Heart Failure: 02

Heart Failure: What is it really:

it is a pathologic state in which your heart is not able to pump enough blood from the ventricles to your body  to meet it metabolic needs.

Because the heart is unable to eject the blood from the ventricle, the fluid builds up in the heart causes volume overload, chamber dilation and elevated intra-cardiac pressure.

Right or left ventricle can be affected separately or both ventricle can be affected simultaneously.

When the left side fails:

  • This leads to Pulmonary edema, coughing, difficulty breathing, Shortness of Breath (SOB).

When the right side fails:

  • Systemic venous congestion, pedal edema (swollen feet), jugular vein distention, ascites, and hepatic congestion.


We are taking Points

The heart fails,  it can no longer meet the demand for blood to each organ. Therefore the organs that are most dependent are deprived.

The last two organ to be completely deprived of blood supply are the two most the dependent: the brain and the Heart.

The Kidney blood supply gets shunted away: may cause acute or chronic renal failure.


Common Causes of Myocardial Deficiency and increased Ventricular Workload:

  • Myocardial Deficiency – Inadequate Contractility
    • Myocardial infarction
    • Coronary artery disease
    • Cardiomyopathy
    • Valvular insuffiency
  • Increased Workload – Pressure Overload
    • Pulmonary Hypertension
    • Systemic Hypertension
    • Outflow obstruction
  • Inadequate Filling
    • Atrial Fibrillation
    • Infection
    • Tamponade
    • Ischemia
  • Volume Overload
    • Hypervolemia
    • Anemia
    • Thyroid disease
    • Infection
    • Diabetes

Chap 24: Failure 03: NexT>

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