"Erectile Function After PCI in MI and Non-MI Patients"

Inclusion Criteria * Male patients aged 30-75 years * Undergoing successful percutaneous coronary intervention (PCI) for one of the following: * Acute myocardial infarction (Group 1) * Stable angina (Group 2) * Hemodynamically stable after the PCI procedure * Survival of the index hospitalization * Ability to provide written informed consent * Sexually active within the 3 months prior to enrollment * Willingness and ability to complete follow-up visits and questionnaires at: * Baseline (post-PCI recovery) * 3 months * 6 months Exclusion Criteria * Known malignancy (active or recently treated) * Neurological disorders affecting erectile function, including: * Spinal cord injury * Multiple sclerosis * Parkinson's disease * Uncontrolled diabetes mellitus (HbA1c \> 9%) * Presence of more than two chronic systemic diseases, such as: * Severe renal disease * Severe hepatic disease * Severe pulmonary disease * Polypharmacy, defined as chronic use of more than three daily medications * Absence of sexual activity or lack of a sexual partner * Refusal or inability to provide informed consent or complete study questionnaires * Severe psychiatric illness interfering with study participation * Endocrine disorders, including: * Untreated hypogonadism * Thyroid disease * Major post-PCI complications preventing participation, including: * Reinfarction * Stroke * Heart failure