- ICH GCP
- US Clinical Trials Registry
- Klinisk forsøg NCT00871130
The Effect of Bariatric Surgery on Thyroid Function and Morphology
The Effect of Bariatric Surgery on Thyroid Function and Morphology, a Retrospective Study
Studieoversigt
Status
Betingelser
Intervention / Behandling
Detaljeret beskrivelse
Background:
Over the last decades, there has been an increase in obesity in virtually all population groups with approximately 1.6 billion adults worldwide estimated to be overweight in 2005 and 400 million of these people qualifying as being obese.
Although hormonal disturbances may play a certain role in the development of obesity, more important are the possible consequences of obesity and the influence of surgically-induced rapid weight loss on overall endocrine function of these patients. Studies evaluating the effect of weight loss on thyroid function show inconsistent results. Whilst some authors have shown that weight loss after bariatric surgery may have a positive effect on thyroid dysfunction, especially in individuals with preoperative subclinical hypothyroidism 1 resulting in normalisation of TSH levels, others fail to show any significant postoperative changes.
Objective:
To evaluate the effect of dramatic weight loss after bariatric surgery on thyroid function (thyroid hormone levels and particularly morphological changes) in the short and long-term in the setting of a cross-sectional study. A particular focus will be made with regard to putting into correlation preoperative thyroid function abnormalities and postoperative changes over time with respect to the type of bariatric intervention carried out.
Methods:
BMI, thyroid hormones (TSH, fT3, fT4 levels), need for thyroxin substitution (or equivalent medication) as well as pre- and postoperative morphological changes in the thyroid gland (usually via sonography)and Leptin values will be assessed retrospectively.
Undersøgelsestype
Tilmelding (Faktiske)
Kontakter og lokationer
Studiesteder
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Bern, Schweiz, 3010
- Dep.of Visceral and Transplant Surgery, Bern University Hospital
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Deltagelseskriterier
Berettigelseskriterier
Aldre berettiget til at studere
Tager imod sunde frivillige
Køn, der er berettiget til at studere
Prøveudtagningsmetode
Studiebefolkning
Beskrivelse
Inclusion Criteria:
- Patients who underwent bariatric surgery between 1998 and 2007
Exclusion Criteria
- age >18 years
Studieplan
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
Hvad måler undersøgelsen?
Primære resultatmål
Resultatmål |
Tidsramme |
---|---|
thyroid hormone levels (change in)
Tidsramme: preoperative, 3, 6 and 12 months postoperative
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preoperative, 3, 6 and 12 months postoperative
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Sekundære resultatmål
Resultatmål |
Tidsramme |
---|---|
morphological changes of the thyroid gland
Tidsramme: up to 12 months postoperatively
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up to 12 months postoperatively
|
Samarbejdspartnere og efterforskere
Efterforskere
- Ledende efterforsker: Vanessa Banz, MD, Dep.of Visceral and Transplant Surgery, Bern University Hospital
Publikationer og nyttige links
Generelle publikationer
- Chikunguwo S, Brethauer S, Nirujogi V, Pitt T, Udomsawaengsup S, Chand B, Schauer P. Influence of obesity and surgical weight loss on thyroid hormone levels. Surg Obes Relat Dis. 2007 Nov-Dec;3(6):631-5; discussion 635-6. doi: 10.1016/j.soard.2007.07.011.
- Alagna S, Cossu ML, Masala A, Atzeni MM, Ruggiu M, Satta FM, Fais E, Rovasio PP, Noya G. Evaluation of serum leptin levels and thyroid function in morbidly obese patients treated with bariatric surgery. Eat Weight Disord. 2003 Jun;8(2):95-9. doi: 10.1007/BF03324997.
- Reinehr T, Andler W. Thyroid hormones before and after weight loss in obesity. Arch Dis Child. 2002 Oct;87(4):320-3. doi: 10.1136/adc.87.4.320.
Datoer for undersøgelser
Studer store datoer
Studiestart
Primær færdiggørelse (Faktiske)
Studieafslutning (Faktiske)
Datoer for studieregistrering
Først indsendt
Først indsendt, der opfyldte QC-kriterier
Først opslået (Skøn)
Opdateringer af undersøgelsesjournaler
Sidste opdatering sendt (Skøn)
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidst verificeret
Mere information
Begreber relateret til denne undersøgelse
Nøgleord
Yderligere relevante MeSH-vilkår
Andre undersøgelses-id-numre
- KEK_13_01_09
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