Résumé
Thyroid hormones have many effects on cardiovascular function, and deficiency or excess of thyroid hormones can result in cardiac dysfunction. Abnormalities of the cardiovascular system are often identified during examination of hyperthyroid and hypothyroid patients
Objective: The aim of this study was to address the effects of thyroid hormones on the cardiovascular system and the clinical relevance of the cardiovascular response to thyroid dysfunction
Study Design: Cross sectional study
Setting: The study was conducted at Allied Hospital / Punjab Medical College Faisalabad and PINUM Hospital Faisalabad
Period: October 2014 to August 2015
Materials and Methods: Total 100 patients with thyroid disease [Hypo/hyperthyroidism] were enrolled in the study. Any patient age >/=20 years, that had documented history of thyroid disease [Hypothyroidism or hyperthyroidism] or on medications for thyroid disorder was recruited in this study
Results: Total 100 consecutive patients with abnormal thyroid function tests who fulfill the inclusion and exclusion criteria were enrolled in the study. Mean age was 47.9 +/- 23.20 years. 16% were male and 84% were female. Majority of the patients 37[37%] were in age group 51 - 60 years. 53% were suffering from overt hyperthyroidism and 31% were suffering from hypothyroidism. Subclinical hyperthyroidism and hypothyroidism was present in 7% and 9% patients respectively. Goiter was present in 24% patients. Atrial fibrillation was observed in 34% hyperthyroid patients. Overall 23% were diabetics and 25% had H/O hypertension. Dyslipidemia was present in 20% hyperthyroid and 25% hypothyroid patients. Echocardiography was performed in 19% patients. 7% patients undergone thyroid surgery. Overall 11% patients were suffering from CCF. Pulmonary hypertension was observed in 17% hyperthyroid and 35.48% hypothyroid patients. MeanFT4 in hypothyroid patients was 1.16 +/- 022 ng/dl. Mean TSH was 10.92 +/- 21.09 [microIU/ml] in hypothyroid and 0.19 +/- 0.14 [microIU/ml] in hyperthyroid patients
Conclusions: The outcome of this study suggests that patients with untreated overt / subclinical thyroid dysfunction are at increased risk of cardiovascular complications