Certified Ophthalmic Medical Technologist (COMT) Practice Exam

What is a primary contraindication for therapeutic use of adrenergic antagonists?

1. Peptic ulcers

2. Cardiovascular diseases

3. Diabetes

4. Thyroid disorders

The correct answer is: Cardiovascular diseases

Adrenergic antagonists, also known as beta-blockers and alpha-blockers, are primarily used to manage conditions related to the cardiovascular system, including hypertension and certain types of arrhythmias. However, their use can be contraindicated in patients with certain cardiovascular diseases because these medications block the effects of adrenaline on the heart and blood vessels. This can lead to decreased heart rate and blood pressure, potentially exacerbating existing heart conditions or leading to adverse effects. For instance, patients who have severe heart failure, bradycardia, or other significant cardiac issues may experience further complications if treated with adrenergic antagonists. In these situations, careful assessment is necessary before prescribing these medications, and alternatives may be considered to avoid increasing the risk of cardiac events. The other options, while they can have implications for treatment, do not present the same level of primary contraindication regarding the use of adrenergic antagonists. Peptic ulcers can be influenced by stress and other factors, and while caution is advised with diabetes due to potential effects on blood glucose levels, these conditions do not represent a primary contraindication. Similarly, thyroid disorders may require closer monitoring but do not typically preclude the use of adrenergic antagonists. Thus, the association of severe