INTRODUCTION: To identify the incidence of thyroid dysfunction in geriatric patients in Corum province.
METHODS: Thyroid stimulating hormone (TSH), free T4 (FT4), Free T3 (FT3) tests and demographic characteristics of 220 randomized patients were retrospectively investigated. Patients with total or partial thyroidectomy surgery and those receiving any medical thyroid treatment were not included in the study. Patients were divided into five groups as subclinical hypothyroidism, hypothyroidism, euthyroid, subclinical hyperthyroidism and hyperthyroidism.
RESULTS: Of patients, 114 were male and 106 were female. The mean ages of male and female patients were 74±7 and 75±7 years. All patients had median TSH 0.94 (0.33-1.86) µIU/mL, median FT4 1.14 (1.02-1.33) ng/dL, and median FT3 2.73 (2.25-3.11) pg/mL. For male patients, median TSH was 0.87 (0.36-1.66) µIU/mL, median FT4 was 1.14 (1.02-1.29) ng/dL and median FT3 was 2.74 (2.18-3.15) pg/mL, while for female patients median TSH was 0.95 (0.20-2.21) µIU/mL, median FT4 was 1.17 (1.06-1.38) ng/dL and median FT3 was 2.72 (2.31-3.10) pg/mL. Of males, 1.8% had subclinical hypothyroidism, 1.8% had hypothyroidism, 72.8% were euthyroid, 19.3% had subclinical hyperthyroidism and 4.4% had hyperthyroidism identified. For females, there was 2.8% subclinical hypothyroidism, 1.9% hypothyroidism, 64.2% euthyroid, 26.4% subclinical hyperthyroidism and 4.7% hyperthyroidism. When the diagnosis incidence is compared according to gender, there was no statistically significant difference observed (P=0.696).
DISCUSSION AND CONCLUSION: Independent of gender, the geriatric patient population had high incidence of subclinical hyperthyroidism which may make diagnosis of other metabolic diseases difficult or delay diagnosis. As thyroid function tests affect all metabolism, they should be investigated when assessing other metabolic diseases in the geriatric patients. We think excluding thyroid disfunctions when researching other metabolic diseases in this population of patients will gain time for accurate diagnosis and treatment. As thyroid diseases are affected by iodine amounts in geographical regions, each region should perform thyroid disease incidence studies.