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Heart rate and ventricular wall tension
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∙ 11y ago
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Will atenolol increase the myocardial oxygen demand?
Yes.
A patient has an 80 percent blockage of his left anterior descending coronary artery Describe what occurs in terms of myocardial oxygen supply and demand if his sympathetic nervous system is stimulate?
Increased myocardial contractility increases the oxygen demand for the myocardial cells. If the demand of oxygen exceeds the supply, death of myocardial tissue can occur.
Does epinephrine decrease myocardial oxygen demand?
YES
Another name for rate-pressure product?
Myocardial Oxygen demand
What effect does tachycardia have?
When the heart beats too rapidly, it pumps less efficiently and blood flow to the rest of the body, including the heart itself is reduced. The higher-than-normal heartbeat means there is an increase in demand for oxygen by the myocardium (heart muscle) - if this persists it can lead to myocardial infarction (heart attack), caused by the dying off of oxygen-starved myocardial cells.
Does chronic bleeding ulcer increase erythropoiesis?
increased demand for oxygen
Why does oxygen diffusion rate increase?
Oxygen diffusion increases as the need increases. It is a matter of supply and demand.
What are the short terms on the respiratory system?
There is an increase in the breathing rate, this is due to the demand for oxygen from the working muscles. •The Respiratory Volume increases, this is due to the increase of Tidal Volume and breathing rate whilst meeting the demand of oxygen for the working muscles.
Why does an exercise physiologist calculate pressure rate product?
Rate-pressure product is a good estimate of myocardial oxygen demand. RPP = Heart Rate X Systolic Blood Pressure. When using the RPP with patients with Coronary Artery Disease and with angina symptoms, it can indicate the oxygen demand at which Angina initially occurs (angina threshold).
What vessels that carry oxygen to the myocardial cells are called?
Coronary artery
What vessels carry oxygen to myocardial cells?
The circulatory system and heart are vessels that carry oxygen to myocardial cells. They help send blood throughout the entire body each time a person's heart beats.
What can happen when the heart muscle does not get enough blood?
Myocardial ischemia results from the temporary lack of oxygen; if ischemia is prolonged, it could result in permanent damage to the heart muscle. This condition is called myocardial infarction, commonly known as a heart attack.ischemia
