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SUN-431 Case Finding Versus Routine Screening of Thyroid Dysfunction in Pregnancy

Background: Thyroid dysfunction in pregnancy is associated several adverse outcomes. This has triggered a debate about whether universal screening should be implemented. Despite recommendations against universal screening, the clinical practice of many caregivers may differ. We aimed to assess the s...

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Autores principales: Al Qarni, Ali Ahmed, Alamoudi, Reem Mohammad, Shahid, Khalida, Almanei, Amal, Alotaibi, Muneera, AlAhmed, Jawharah
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Oxford University Press 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7208714/
http://dx.doi.org/10.1210/jendso/bvaa046.805
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author Al Qarni, Ali Ahmed
Alamoudi, Reem Mohammad
Shahid, Khalida
Almanei, Amal
Alotaibi, Muneera
AlAhmed, Jawharah
author_facet Al Qarni, Ali Ahmed
Alamoudi, Reem Mohammad
Shahid, Khalida
Almanei, Amal
Alotaibi, Muneera
AlAhmed, Jawharah
author_sort Al Qarni, Ali Ahmed
collection PubMed
description Background: Thyroid dysfunction in pregnancy is associated several adverse outcomes. This has triggered a debate about whether universal screening should be implemented. Despite recommendations against universal screening, the clinical practice of many caregivers may differ. We aimed to assess the sensitivity of using targeted high-risk case finding for diagnosing thyroid dysfunction in pregnancy compared to routine screening in pregnant Saudi women, and to evaluate if gestational diabetes (GDM) specifically affected the risk. Methods: A cross-sectional study in two hospitals under the Ministry of National Guards Health affairs of Saudi Arabia; King Abdulaziz Hospital, Al-Ahsa, and Imam Abdulrahman bin Faisal Hospital, Dammam. Pregnant ladies attending the Family medicine, Obstetrics and Gynecology, and Endocrinology clinics in both hospitals were assessed by the caring physician based on a check list for risk stratification for thyroid dysfunction as per the 2012 Endocrine society clinical practice guidelines for management of thyroid dysfunction in pregnancy. Presence of one risk factor defined high risk. All patients had a routine serum TSH measured as universal screening is commonly practiced in both institutions, the physician doing the risk stratification was not aware of the TSH result. Sensitivity and specificity for the case finding approach was calculated using and abnormal TSH value as the gold standard for presence of thyroid dysfunction. The institutions lab reference TSH 0.35 – 4.94 mIU/L was used as cutoff. Results: 1571 pregnant women were included in the study; mean age 29.3± 6.2 years, 396 (23.5%) were primigravida. The mean TSH value was 1.898 ± 1.459 mlU/L. 1178 (75%) pregnant women had an indication for screening based on presence of at least one risk factor, of which 95 (8.1%) tested abnormal for TSH. 393 women had no risk factors, of which 379 (96.4%) had normal TSH, (Chi square 9.3, p-value 0.002). [Sensitivity 87.2%, (95%CI 79.4% – 92.8%), Specificity 25.9%, (95%CI 23.7% – 28.3%)]. Total abnormal TSH values was 109 (6.9%), 43 were abnormal high (i.e. hypothyroid); of which 40 screened positive by case finding approach [Sensitivity 93.02%, (95%CI 80.9% – 98.5%), Specificity 25.52%, (95%CI 23.4% – 27.8%)]. Moreover, 178 (11.3%) women screened positive for GDM at some stage in pregnancy out of which only 5 (2.8%) had an abnormal TSH value, while of the 1393 pregnant women who screened negative for GDM 1289 (92.5%) had a normal TSH value, (Chi square 5.3, p-value 0.02). [Sensitivity 4.6%, (95%CI 1.5% – 10.4%), Specificity 88.2%, (95%CI 86.4% – 89.8%)]. Conclusion: Targeted high-risk case finding predicts thyroid dysfunction in pregnant Saudi women with high sensitivity supporting its utility in screening our pregnant population. Gestational diabetes is highly prevalent in Saudi women, but does not increase risk of thyroid dysfunction in pregnancy.
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spelling pubmed-72087142020-05-13 SUN-431 Case Finding Versus Routine Screening of Thyroid Dysfunction in Pregnancy Al Qarni, Ali Ahmed Alamoudi, Reem Mohammad Shahid, Khalida Almanei, Amal Alotaibi, Muneera AlAhmed, Jawharah J Endocr Soc Thyroid Background: Thyroid dysfunction in pregnancy is associated several adverse outcomes. This has triggered a debate about whether universal screening should be implemented. Despite recommendations against universal screening, the clinical practice of many caregivers may differ. We aimed to assess the sensitivity of using targeted high-risk case finding for diagnosing thyroid dysfunction in pregnancy compared to routine screening in pregnant Saudi women, and to evaluate if gestational diabetes (GDM) specifically affected the risk. Methods: A cross-sectional study in two hospitals under the Ministry of National Guards Health affairs of Saudi Arabia; King Abdulaziz Hospital, Al-Ahsa, and Imam Abdulrahman bin Faisal Hospital, Dammam. Pregnant ladies attending the Family medicine, Obstetrics and Gynecology, and Endocrinology clinics in both hospitals were assessed by the caring physician based on a check list for risk stratification for thyroid dysfunction as per the 2012 Endocrine society clinical practice guidelines for management of thyroid dysfunction in pregnancy. Presence of one risk factor defined high risk. All patients had a routine serum TSH measured as universal screening is commonly practiced in both institutions, the physician doing the risk stratification was not aware of the TSH result. Sensitivity and specificity for the case finding approach was calculated using and abnormal TSH value as the gold standard for presence of thyroid dysfunction. The institutions lab reference TSH 0.35 – 4.94 mIU/L was used as cutoff. Results: 1571 pregnant women were included in the study; mean age 29.3± 6.2 years, 396 (23.5%) were primigravida. The mean TSH value was 1.898 ± 1.459 mlU/L. 1178 (75%) pregnant women had an indication for screening based on presence of at least one risk factor, of which 95 (8.1%) tested abnormal for TSH. 393 women had no risk factors, of which 379 (96.4%) had normal TSH, (Chi square 9.3, p-value 0.002). [Sensitivity 87.2%, (95%CI 79.4% – 92.8%), Specificity 25.9%, (95%CI 23.7% – 28.3%)]. Total abnormal TSH values was 109 (6.9%), 43 were abnormal high (i.e. hypothyroid); of which 40 screened positive by case finding approach [Sensitivity 93.02%, (95%CI 80.9% – 98.5%), Specificity 25.52%, (95%CI 23.4% – 27.8%)]. Moreover, 178 (11.3%) women screened positive for GDM at some stage in pregnancy out of which only 5 (2.8%) had an abnormal TSH value, while of the 1393 pregnant women who screened negative for GDM 1289 (92.5%) had a normal TSH value, (Chi square 5.3, p-value 0.02). [Sensitivity 4.6%, (95%CI 1.5% – 10.4%), Specificity 88.2%, (95%CI 86.4% – 89.8%)]. Conclusion: Targeted high-risk case finding predicts thyroid dysfunction in pregnant Saudi women with high sensitivity supporting its utility in screening our pregnant population. Gestational diabetes is highly prevalent in Saudi women, but does not increase risk of thyroid dysfunction in pregnancy. Oxford University Press 2020-05-08 /pmc/articles/PMC7208714/ http://dx.doi.org/10.1210/jendso/bvaa046.805 Text en © Endocrine Society 2020. http://creativecommons.org/licenses/by-nc-nd/4.0/ This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs licence (http://creativecommons.org/licenses/by-nc-nd/4.0/), which permits non-commercial reproduction and distribution of the work, in any medium, provided the original work is not altered or transformed in any way, and that the work is properly cited. For commercial re-use, please contact journals.permissions@oup.com
spellingShingle Thyroid
Al Qarni, Ali Ahmed
Alamoudi, Reem Mohammad
Shahid, Khalida
Almanei, Amal
Alotaibi, Muneera
AlAhmed, Jawharah
SUN-431 Case Finding Versus Routine Screening of Thyroid Dysfunction in Pregnancy
title SUN-431 Case Finding Versus Routine Screening of Thyroid Dysfunction in Pregnancy
title_full SUN-431 Case Finding Versus Routine Screening of Thyroid Dysfunction in Pregnancy
title_fullStr SUN-431 Case Finding Versus Routine Screening of Thyroid Dysfunction in Pregnancy
title_full_unstemmed SUN-431 Case Finding Versus Routine Screening of Thyroid Dysfunction in Pregnancy
title_short SUN-431 Case Finding Versus Routine Screening of Thyroid Dysfunction in Pregnancy
title_sort sun-431 case finding versus routine screening of thyroid dysfunction in pregnancy
topic Thyroid
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7208714/
http://dx.doi.org/10.1210/jendso/bvaa046.805
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