Journals / Haydarpaşa Numune Eğitim ve Araştırma Hastanesi Tıp Dergisi / 2008 / Cilt: 48 - Sayı: 1

Subclinical hypothyroidism and cardiovascular system

Subklinik hipotiroidi ve kardiyovasküler sistem

Pages
42–48
Publication Date
2022-10-17
DOI
—
🏛️Bibliographic metadata and full text access for this article are provided via DergiPark.
DergiPark Record ↗
✨

AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

SCH is independent risk factor for cardiovascular diseases.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:Subclinical hypothyroidism (SCH) is defined as a serum thyroid stimulating hormone (TSH) concentration above statistically defined upper limit of the reference range when serum free T4 concentration is within its reference range.
📊
Key Findings & Data:The cardiovascular system is very sensitive to thyroid hormone, and a wide spectrum of cardiac changes has long been recognized in overt thyroid dysfunction.
💡
Conclusion & Impact:SCH is independent risk factor for cardiovascular diseases.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

Subclinical hypothyroidism (SCH) is defined as a serum thyroid stimulating hormone (TSH) concentration above statistically defined upper limit of the reference range when serum free T4 concentration is within its reference range. The cardiovascular system is very sensitive to thyroid hormone, and a wide spectrum of cardiac changes has long been recognized in overt thyroid dysfunction. SCH is associated with impaired left ventricular diastolic function at rest, systolic dysfunction on effort, and enhanced atherosclerosis and myocardial ischemia. Several studies suggested an association between SCH and atherosclerosis, which could be attributed to multiple mechanisms such as endothelial dysfunction, hyperlipidemia, hypercoagulable state, and direct effect on vascular smooth muscle cell. In a substantial number of studies, total cholesterol and LDL-cholesterol seem to be elevated in SCH patients compared to controls. SCH is independent risk factor for cardiovascular diseases.

Özet

Serum tiroid stimulan hormon (TSH) düzeyinin yüksek ve serum serbest tiroksin (ST4) düzeyinin normal bulunması durumunda subklinik hipotiroidi (SH) tanısı konu-lur.Kardiyovasküler sistem tiroid hormonlarının etkisine oldukça duyarlıdır ve klinik hipotiroidili hastalarda kardi-yak değişiklikler gösterilmiştir. SH'de istirahatte diyasto-lik disfonksiyon, eforda sistolik disfonksiyon, miyokard iskemisi ve hızlanmış ateroskleroz görülür. SH'de görülen endotel disfonksiyonu, hiperlipidemi, koagulasyonun artması ve direkt vasküler hasar ateroskleroza katkıda bulunmaktadır. Birçok çalışmada total kolesterol ve LDL-kolesterolun arttığı gösterilmiştir. SH kardiyovasküler hastalıkların bağımsız bir risk faktörüdür.

🔖

Cite This Article

KAPLAN, S. A., DUMAN, D., CAN, M., DEMİRTUNÇ, R. (2022). Subclinical hypothyroidism and cardiovascular system. Haydarpaşa Numune Eğitim ve Araştırma Hastanesi Tıp Dergisi, Cilt: 48 - Sayı: 1, 42–48. https://ajindex.com/articles/535529

📄 Full Text PDF Viewer

📄

PDF görüntüleyici hazırlanıyor...

References (2)

  1. Arem R, Escalante D. Subclinical hypothyroidism: epidemiology, diagnosis and significance. Adv Intern Med 1996; 41:213-250 2.Cooper DS. Subclinical thyroid disease: a clinician's perspective. An Intern Med 1998; 129: 135-138 3.Ayala AR, Danese MD, Ladenson PW. When to treat mild hypothyroidism. Endocrinol Metab Clin North Am 2000; 29: 399-415 4.Ladenson PW, Singer PA, Ain KB. American thyroid asociation guidelines for detection of thyroid dysfunction. Arch intern Med 2000; 160: 1573-1575 5.Kim G, Davis T. Hypothyroidism In Comprehensive Clinical Endocrinology Third Edition,
  2. Mosby, London 2002; 145-149 6.Canaris GJ, Manowitz NR, Mayor G, Ridgway EC. The Colorado thyroid disease prevalance study. Arch intern Med 2000; 160: 526-534 7.Tunbidge WMG, Evered DC, Hall R.Appleton D, Brewis M, Clark F.Grimley Evans J, et al. The spectrum of thyroid disease in a community: The Whickam Survey. Clin Endocrinol 1977; 7:481-493. 8.Rivolta G, Cerutti R, Colombo R, Miano G, Dionisio P, et al. Prevalance of subclinical hypothyroidism in a population living in the Milan metropolitian area J Endocrinol 1999; 22:693-697 9.Bagchi N, Brown TR, Parish RF. Thyroid dysfunction in adults over age 55 years. A study in an urban US: community. Arch intern Med 1990; 150: 785-787 10.Sawin CT, Chopra D, Azizi F, Mannix JE, et al. The aging thyroid. Incresed prevalence of elevated serum thyrotropin levels in the elderly. JAMA 1979; 242: 247-250 11.Lindeman RD, Schade DS, Larue A, et al. Subclinical hypothyroidism in a biethnic, urban community. J Am Geriat Sod 999; 47: 703-709 12.Hak AE, Pols HAP, Visser TJ, Drexhage HA, et al. Subclinical hypothyroidism is an independent risk factor for atherosclerosis and myocardial infarction in elderly women: The Roterdam study. Ann intern Med 2000; 132:270-278 13.Rosenthal MJ, Hunt WC, Gary PJ, Goodwin JS. Thyroid failure in the elderly: microsomal antibodies as discriminant for therapy. JAMA 1987; 258: 209-213 14.Parle JV, Franklyn JA, Cross KW, Jones SC, et al. Prevalance and follow-up abnormal TSH concentrations in the elderly in the United Kingdom. Clin Endocrin 1991; 42: 77-93 15.Sawin CT, Castelli WP, Hershman JM, McNamara P, Bacharach P.The aging thyroid deficiancy in the Framingham Study. Arch Intern Med 1985; 145: 1386-1388 16.Chu JW, Crapo LM. Clinican perspective: The treatment of subclinical hypothyroidism in seldom necessary. J Clin Endocrinol Metab 2001; 86(10): 4591-4599 17.Zulewski H, Muller B, Exer P, Miserez AR, Staub J. Estima