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Doctor insights on: Will Acetylcholine Cardiac

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Will acetylcholine raise cardiac output?

Will acetylcholine raise cardiac output?

No: Acetylcholine neurotransmission has an inhibitory effect on the heart, which lowers heart rate thereby decreasing cardiac output. ...Read more

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Dr. John Berryman
92 doctors shared insights

Cardiac (Definition)

Cardiac translates literally to "heart, " and any place the term is seen, such ...Read more


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Will epinephrine increase cardiac output?

Will epinephrine increase cardiac output?

Yes: It makes the heart contract more forcefully and makes it beat faster. Both effects will increase the cardiac output. ...Read more

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Will atrioventricular dissociation lead to heart block?

Will atrioventricular dissociation lead to heart block?

Arrhythmia: Av dissociation is a disorder of conduction that in some cases (3rd degree av block) can lead to bradycardia (slow hr) and syncope. ...Read more

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How does the heart increase cardiac output?

How does the heart increase cardiac output?

Cardiac output: This is a product of stroke volume or cc's of blood per beat times the heart rate so cardiac output increases with either an increase in stroke volume or heart rate or both. ...Read more

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What will happen if cardiac output decreases?

What will happen if cardiac output decreases?

Cardiac Output: This is the amount of blood the heart pumps. If it decreases but is still adequate for the demands of the body, nothing much will happen. If it decreases below the metabolic demands of the body, organ dysfunction and shock will occur if the output level is low enough. ...Read more

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What will happen if cardiac output decreases?

What will happen if cardiac output decreases?

Cardiac Output: This is the amount of blood the heart pumps. If it decreases but is still adequate for the demands of the body, nothing much will happen. If it decreases below the metabolic demands of the body, organ dysfunction and shock will occur if the output level is low enough. ...Read more

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How does electrical stimulation of the heart coordinate the overall cardiac cycle?

How does electrical stimulation of the heart coordinate the overall cardiac cycle?

Millisecond timing: The 2 atria act as reservoirs for returning blood; the 2 ventricles are the "pumpers". The 4 chambers must be coordinated with millisecond timing to maximize the amount of blood pumped (cardiac output). This is done by a network of specialized cells which are found in tracts or bundles that conduct a micro-electrical current to time motion. A gross analogy: think of the distributor in your car. ...Read more

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Can mulitfocal pvcs lead to cardiac arrest?

Yes: If a PVC hits in the wrong area of rhythym ventricular tachycardia or fibrillation can be induced. It is an infrequent occurrence but is possible. ...Read more

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How does noradrenaline affect cardiac output?

How does noradrenaline affect cardiac output?

Contractivity: Because it increases the contractivity of the heart as it is a catecholamine. ...Read more

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Will vasoconstriction of the sympathetic nerve activity increase heart rate? If yes. How?

Opposite : Vasoconstriction is associated with blood vessels, not nerves. Sympathetic nerves cause vasoconstriction of blood vessels by changing the sympathetic tone of the smooth muscle of blood vessels. ...Read more

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How do beta-blockers increase cardiac output?

They don't: Cardiac output is the product of heart rate and stroke volume. Beta blockers decrease heart rate and the strength of contraction (contractility). Thus, beta blockers would not be expected to increase cardiac output. ...Read more

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How does a coronary heart disease affect the cardiac muscle?

How does a coronary heart disease affect the cardiac muscle?

Lack of blood supply: Coronary arteries supply blood to the heart muscle. Disease of arteries often leads to blockage of blood flow. Lack of blood supply causes death of muscle, i.e., myocardial infarction, or heart attack. ...Read more

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How might coronary heart disease affect the heart muscle and the circulatory system?

How might coronary heart disease affect the heart muscle and the circulatory system?

Directly: The coronary arteries and their branches carry the blood and oxygen to the heart muscle cells. Poor flow, low oxygen, cells die- equals heart attack. If enough muscle dies, then heart failure, cardiac arrest, no circulation, and death. ...Read more

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Does the tachycardia affect cardiac muscles?

Does  the tachycardia affect cardiac muscles?

Possibly: Prolonged periods of excessive heart rates can lead to weakening of the heart muscle (cardiomyopathy). It is important to identify causes of tachycardia and initiate treatment. ...Read more

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Can your brain still function after having cardiac arrest?

Can your brain still function after having cardiac arrest?

Yes: Depends how long the brain was without oxygen - if the patient was immediately resuscitated, many of them recover completely. ...Read more

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How does exercise affect the cardiac output?

How does exercise affect the cardiac output?

Exercise: In order to facilitate the increase in oxygen demand of the muscles during exercise, the heart rate and volume of blood per beat will go up. Cardiac output is the product of heart rate times stroke volume. Therefore cardiac output will increase with exercise. ...Read more

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Dr. Jeff Livingston
5 doctors shared insights

Cardiac (Definition)

Cardiac translates literally to "heart, " and any place the term is seen, such ...Read more