Which of the following is the beneficial action of nitroglycerin in some cardiac emergencies quizlet?

Which of the following is a beneficial effect of nitroglycerin?

Sublingually administered nitroglycerin appears to decrease left heart size, increase the velocity and extent of shortening in normal left ventricular segments and often reduce the extent of left ventricular wall motion abnormalities at rest and during isometric exercise in patients with previous transmural myocardial …

Which of the following is the beneficial action of a beta blocker medication?

Beta-blockers help to reduce the speed and force of your heartbeat while also lowering your blood pressure. They work by preventing the hormone adrenaline (epinephrine) from binding to beta receptors.

Which of the following is the result of a portion of the heart muscle dying due to a lack of oxygen?

Ischemia results when the heart muscle is starved for oxygen and nutrients. When damage or death of part of the heart muscle occurs as a result of ischemia, it’s called a heart attack, or myocardial infarction (MI).

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Which of the following is the name given to the condition in which fluid accumulates in the lungs quizlet?

Pulmonary edema occurs when the alveoli are flooded. When the alveoli are flooded, two problems occur: The bloodstream cannot get enough oxygen.

What does nitroglycerin do to the body?

Nitroglycerin works by relaxing the smooth muscle and blood vessels in your body. This increases the amount of blood and oxygen that reaches your heart. In turn, your heart doesn’t work as hard. This reduces chest pain.

What is the action of nitroglycerin?

The principal pharmacological action of nitroglycerin is relaxation of vascular smooth muscle. Although venous effects predominate, nitroglycerin produces, in a dose-related manner, dilation of both arterial and venous beds.

What is the action of beta blockers?

Beta blockers work by blocking the effects of the hormone epinephrine, also known as adrenaline. Beta blockers cause the heart to beat more slowly and with less force, which lowers blood pressure. Beta blockers also help widen veins and arteries to improve blood flow.

What is a beta blocker What does it do?

Beta blockers, also called beta adrenergic blocking agents, block the release of the stress hormones adrenaline and noradrenaline in certain parts of the body. This results in a slowing of the heart rate and reduces the force at which blood is pumped around your body.

How do beta blockers help with heart failure?

Drugs called beta-blockers perform four main tasks essential for people with heart failure: Improve your heart’s ability to relax. Decrease the production of harmful substances your body makes in response to heart failure. Slow your heart rate.

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What happens during a myocardial infarction?

If a blood clot totally blocks the artery, the heart muscle becomes “starved” for oxygen. Within a short time, death of heart muscle cells occurs, causing permanent damage. This is called a myocardial infarction (MI), or heart attack.

What causes scarring on the heart?

When a person has a heart attack, the lack of oxygen causes part of the tissue to be damaged and form scar tissue. Until this study, many scientists believed it was important to lessen the scarring because it hardens the walls of the heart and reduces its ability to pump blood around the body.

What is angina of the heart?

Angina is chest pain or discomfort caused when your heart muscle doesn’t get enough oxygen-rich blood. It may feel like pressure or squeezing in your chest.