cardiovascular-agents and Hypothyroidism

Topics: Amiodarone; Cardiovascular Agents; Cardiovascular Diseases; Drug Interactions; Humans; Hypothyroidism; Risk Factors; Thyroxine

To assess whether levothyroxine treatment improves functional capacity in patients with chronic heart failure (New York Heart Association class i-iii) and subclinical hypothyroidism.. One hundred and sixty-three outpatients with stable chronic heart failure followed up for at least 6 months were enrolled. A physical examination was performed, and laboratory tests including thyroid hormone levels, Doppler echocardiogram, radionuclide ventriculography, and Holter monitoring were requested. Functional capacity was assessed by of the 6-min walk test. Patients with subclinical hypothyroidism were detected and, after undergoing the s6-min walk test, were given replacement therapy. When they reached normal thyrotropin (TSH) levels, the 6-min walk test was performed again. The distance walked in both tests was recorded, and the difference in meters covered by each patient was analyzed.. Prevalence of subclinical hypothyroidism in patients with heart failure was 13%. These patients walked 292±63m while they were hypothyroid and 350±76m when TSH levels returned to normal, a difference of 58±11m (P<.011). Patients with normal baseline TSH levels showed no significant difference between the 2 6-min walk tests.. Patients with chronic heart failure and subclinical hypothyroidism significantly improved their physical performance when normal TSH levels were reached.

Topics: Aged; Cardiovascular Agents; Comorbidity; Exercise Test; Female; Follow-Up Studies; Heart Failure; Heart Function Tests; Hemodynamics; Hormone Replacement Therapy; Humans; Hypothyroidism; Male; Middle Aged; Prospective Studies; Thyrotropin; Thyroxine; Triiodothyronine; Ultrasonography; Walking

Topics: Aged; Asymptomatic Diseases; Cardiovascular Agents; Defibrillators, Implantable; Electric Countershock; Electrocardiography, Ambulatory; Heart Block; Heart Conduction System; Humans; Hypothyroidism; Male; Risk Factors; Tachycardia, Ventricular; Treatment Outcome

Topics: Adrenergic beta-Antagonists; Aged; Amiodarone; Atrial Fibrillation; Bisoprolol; Bradycardia; Calcium Channel Blockers; Cardiovascular Agents; Combined Modality Therapy; Digoxin; Diltiazem; Female; Humans; Hypothyroidism; Kidney Failure, Chronic; Myocardial Infarction; Pacemaker, Artificial; Renal Dialysis

Topics: Cardiovascular Agents; Dihydroergotamine; Ergot Alkaloids; Headache; Hyperthyroidism; Hypothyroidism; Oxytocics

Topics: Cardiovascular Agents; Child; Ergoloid Mesylates; Ergot Alkaloids; Glucose; Hypothyroidism; Infant; Thyroid Gland; Thyroid Hormones; Viscera