Can hypertension patients donate blood?

Hypertension is a chronic disease. It is generally not recommended for patients with hypertension to donate blood. This is because patients with hypertension are prone to spasm of the coronary artery when donating blood, and patients are prone to angina pectoris. Moreover, after donating blood, patients are also prone to slow blood flow, which may lead to myocardial infarction and other problems.