Title The influence of thyroid functional parameters on thromboembolic events: a retrospective analysis
Title (croatian) Retrospektivna analiza utjecaja funkcionalnih parametara štitnjače na tromboembolijske događaje
Author Ina Grossmann
Mentor Sigrun Renate Merger (mentor)
Committee member Johannes Brachmann (predsjednik povjerenstva)
Committee member Georg Gerhard Grabenbauer (član povjerenstva)
Committee member Marino Vilović (član povjerenstva)
Granter University of Split School of Medicine Split
Defense date and country 2024-07-15, Croatia
Scientific / art field, discipline and subdiscipline BIOMEDICINE AND HEALTHCARE Clinical Medical Sciences Internal Medicine
Abstract Objectives: Thyroid hormones are known to have numerous actions on body systems and functions, but their influence on blood coagulation and thrombus formation and therefore being a risk factor for developing a stroke, is less commonly discussed. The aim of this study is to observe if there could be a possible connection between thyroid functional parameters and the occurrence of a stroke, by investigating numerous laboratory parameters. We hypothesize that patients that experienced a stroke differ from their thyroid functional and coagulation parameters to patients that did not experience a stroke.
Materials and methods: This study was conducted in the form of retrospective case-control study. There are 134 patients in the stroke group, whereas the non-stroke group consists of 139 patients. All of them are older than 18 years and were admitted and diagnosed at the hospital of Coburg at the time between 2020 and 2023. Only patients with obtained thyroid functional and coagulation parameters were included into this study. The blood test that was the first one obtained in the hospital, was used for further analysis.
Results: When comparing the stroke and non-stroke groups, FT₃, TSH, PTT, Quick values, and the FT₃/FT₄ ratio were significantly different. FT₃ correlated with FT₄ in both groups, and with TSH, PTT, and Quick in the non-stroke group. FT₄ only showed a correlation with FT₃ and TSH in both groups, and TSH correlated with FT₃ in the non-stroke group and TSH in both groups. Among patients taking anticoagulants, FT₃, TSH, PTT, and Quick values were significantly different, while only Quick differed in those not taking anticoagulants. Patients taking thyroid medication showed no significant differences between the stroke and non-stroke groups, but those not on thyroid medication had significantly different TSH and PTT values.
Conclusion: It was confirmed that patients that experienced a stroke show higher FT₃ and lower TSH values compared to patients that did not suffer from stroke. Patients with a stroke show a different relation of FT₃/FT₄ in comparison to the non-stroke group. It was verified that patients that suffered from a stroke display lower PTT and higher Quick values than patients that did not experience a stroke. The sole correlation between thyroid function and coagulation parameters was observed with FT₃, which is related to PTT and Quick in the non-stroke group. Anticoagulants seem to influence FT₃ and TSH values in the blood, whereas thyroid medication affects PTT values.
Abstract (croatian) Ciljevi: Poznato je da tiroidni hormoni imaju brojne učinke na tjelesne sustave i funkcije, ali njihov utjecaj na zgrušavanje krvi i stvaranje tromba, te time kao faktor rizika za razvoj moždanog udara, rjeđe se raspravlja. Cilj ovog istraživanja je promatrati može li postojati moguća povezanost između funkcionalnih parametara štitnjače i pojave moždanog udara, istražujući brojne laboratorijske parametre. Pretpostavljamo da se pacijenti koji su doživjeli moždani udar razlikuju od svojih tiroidnih funkcionalnih i koagulacijskih parametara u odnosu na pacijente koji nisu doživjeli moždani udar.
Materijali i metode: Ovo istraživanje provedeno je u obliku retrospektivne studije slučaj-kontrola. U grupi s moždanim udarom nalazi se 134 pacijenata, dok u grupi bez moždanog udara ima 139 pacijenata. Svi su stariji od 18 godina i bili su primljeni i dijagnosticirani u bolnici u Coburgu u razdoblju između 2020. i 2023. godine. U istraživanje su uključeni samo pacijenti s dobivenim funkcionalnim i koagulacijskim parametrima štitnjače. Krvni test koji je prvi dobiven u bolnici korišten je za daljnju analizu.
Rezultati: Pri usporedbi grupa s moždanim udarom i bez moždanog udara, vrijednosti FT₃, TSH, PTT, Quick te omjer FT₃/FT₄ značajno su se razlikovale. FT₃ je korelirao s FT₄ u obje grupe, te s TSH, PTT i Quick u grupi bez moždanog udara. FT₄ je pokazao korelaciju samo s FT₃ i TSH u obje grupe, dok je TSH korelirao s FT₃ u grupi bez moždanog udara i TSH u obje grupe. Među pacijentima koji uzimaju antikoagulanse, vrijednosti FT₃, TSH, PTT i Quick bile su značajno različite, dok se samo Quick razlikovao kod onih koji nisu uzimali antikoagulanse. Pacijenti koji su uzimali lijekove za štitnjaču nisu pokazali značajne razlike između grupa s moždanim udarom i bez moždanog udara, ali oni koji nisu uzimali lijekove za štitnjaču imali su značajno različite vrijednosti TSH i PTT.
Zaključci: Potvrđeno je da pacijenti koji su doživjeli moždani udar imaju više vrijednosti FT₃ i niže vrijednosti TSH u usporedbi s pacijentima koji nisu imali moždani udar. Pacijenti s moždanim udarom pokazuju drugačiji omjer FT₃/FT₄ u usporedbi sa skupinom bez moždanog udara. Verificirano je da pacijenti koji su pretrpjeli moždani udar imaju niže vrijednosti PTT i više vrijednosti Quick u usporedbi s pacijentima koji nisu doživjeli moždani udar. Jedina korelacija između funkcije štitnjače i parametara koagulacije uočena je s FT₃, koji je povezan s PTT i Quick u skupini bez moždanog udara. Čini se da antikoagulansi utječu na vrijednosti FT₃ i TSH u krvi, dok lijekovi za štitnjaču utječu na vrijednosti PTT.
Keywords
thyroid gland
thyroid hormones
coagulation
stroke
thromboembolism
Keywords (croatian)
štitnjača
hormoni štitnjače
koagulacija
moždani udar
tromboembolija
Language croatian
URN:NBN urn:nbn:hr:171:944838
Study programme Title: Medical Studies in English Study programme type: university Study level: integrated undergraduate and graduate Academic / professional title: doktor/doktorica medicine (doktor/doktorica medicine)
Type of resource Text
File origin Born digital
Access conditions Open access Embargo expiration date: 2024-07-15
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Created on 2024-07-12 09:32:08