Post-lecture activity (Week 10)

RIVERA, Diana May M. - Post-lecture activity (Week 10)

RIVERA, Diana May M. - Post-lecture activity (Week 10)

by Diana May Rivera -
Number of replies: 0
  1. High Blood Pressure: High blood pressure causes the arteries to become less elastic, decreasing the flow of blood and oxygen throughout the body. So, this increases the afterload and decreases the cardiac output.

  2. Massive Bleeding: During massive bleeding, there is a decrease in the blood volume. This causes a decline in central venous pressure and cardiac filling, which leads to a lowered cardiac output and arterial pressure.

  3. The Drug Dopamine: Dopamine induces positive chronotropic and inotropic effects on the myocardium. This leads to an increase in heart rate and cardiac contractility. 

  4. Running a Sprint: When running, the body needs more than the normal amount of cardiac output because the muscles require more oxygen. So, during running, the heart beats rapidly and the cardiac output increases greatly.

  5. Hyperthyroidism with Increased Secretion of Thyroid Hormones: Thyroid hormones can dilate peripheral arteries and increase myocardial inotropy and heart rate. So, with hyperthyroidism, there is an increase in cardiac output due to the reduction in peripheral vascular resistance and an increased in cardiac contractility and heart rate. 

  6. Massive Myocardial Infarction (Cardiac Tissue Death): Massive myocardial infarction leads to reduced cardiac output because of the decrease in blood flow. 

  7. Hypothermia: In hypothermia, there is a reduction of core temperature due to the prolonged exposure of the body to cold. This leads to a decrease in heart rate, resulting in a falling cardiac output.

  8. Emotional Distress: Emotional distress increases the heart rate, blood pressure, and release of stress hormones. Hence, this leads to an increase in cardiac output.