Question

Clinical indications for the use of adrenergic drugs stem mainly from their effects on the heart, blood vessels, and bronchi. They are often used as emergency drugs. For which of the following conditions would these drugs be used? Choose all that apply.

Myocardial infarction
Asthma attack
Anaphylaxis T/F

Answer 1

Adrenergic drugs, which include agonists like epinephrine, are used in emergencies such as asthma attacks, anaphylactic reactions, and myocardial infarctions, due to their effects on heart rate, blood pressure, and bronchial dilation. ß-blockers, such as metoprolol and propranolol, are sympatholytic drugs primarily used for chronic cardiovascular management.

Step-by-step explanation:

Clinical Indications for Adrenergic Drugs

Adrenergic drugs are primarily used in medicine to mobilize the body's fight-or-flight response by acting on adrenergic receptors. These receptors are stimulated in times of stress, such as during an asthma attack or an anaphylactic reaction, leading to increased heart rate, blood pressure, and bronchial dilation. In the case of a myocardial infarction (heart attack), adrenergic drugs such as epinephrine can be used to improve cardiac function and stabilize the patient.

Moreover, sympathomimetic drugs like phenylephrine work by binding to the adrenergic receptors and stimulating target organs as if in a sympathetic state, which is beneficial during anaphylactic reactions. However, it is essential to note that while ß-blockers are sympatholytic drugs, they are not typically used in the acute management of myocardial infarction, asthma attacks, or anaphylaxis, but rather for ongoing management of cardiovascular conditions by blocking the effects of adrenaline and noradrenaline to reduce heart rate and blood pressure.

Answer 2

Answer: Adrenergic drugs are used both in the emergency treatment of Myocardial infarction, Asthma attack and Anaphylaxis T/F.

Step-by-step explanation:

Andrenergic drugs acts by blocking renin release,and interfers with synthesis and release of Nor-epinephrine (Nor-adrenaline) thereby helping to reduce the peripheral vascular resistance and lowering the blood pressure.example; Methyldopa.

As a bronchodilator in asthma attack, Adrenergic drugs relax bronchial muscle spasm then dilate the bronchial trees thereby allowing proper ventilation of the lungs example: Aminophylline

Adrenergic drugs like epinephrine are used in anaphylaxis/ allergic reactions as well as hypersensitivity reactions to inhibit the action of histamines and as such relieve allergic reactions.