DIAGNOSTIC ACCURACY OF MATERNAL EARLY WARNING TOOLS (MEWTS) IN PREDICTING MATERNAL MORBIDITY IN TERMS OF ICU ADMISSION
Main Article Content
Keywords
maternal early warning tools, maternal morbidity, ICU admission
Abstract
Introduction: Several tools for early warning are being used right now. The National Council for Patient Safety in the US recently suggested using maternal early warning tools (MEWTs), and the Modified Early Obstetric Warning System (MEOWS) has been suggested in Great Britain.
Objectives: To determine the diagnostic accuracy of maternal early warning tools (MEWTs) in predicting maternal morbidity in comparison with ICU admission as reference standard.
Materials & Methods: The research was done at the PIMS Hospital in Islamabad from December 23, 2017, to June 22, 2018, in the Department of Obstetrics and Gynecology. It used a descriptive, cross-sectional, and validative methodology. A total of 499 pregnant women between the ages of 18 and 40 who were more than 20 weeks along (on LMP) were included. We didn't include women who had valve heart disease, chronic high blood pressure, or coagulopathies. Then, the researcher herself looked at all the women using maternal early warning tools (MEWTs) to guess how likely they were to end up in the intensive care unit (ICU) after giving birth, and the final decision was made 24 hours later.
Results: In total, 84 (16.83%) patients were admitted to the intensive care unit (ICU), while 415 (83.17%) patients were not admitted to the ICU. Out of the MEWT-positive cases, 69 were real positives and 31 were false positives. There were 399 patients who did not have a MEWT. Of these, 384 were true negatives and 15 were fake negatives (p-value = 0.0001). That's 82.14% for sensitivity, 92.53% for specificity, 69.0% for positive predictive value, 96.24% for negative predictive value, and 90.78% for diagnostic accuracy of maternal early warning tools (MEWTs) in predicting maternal illness.
Conclusion: This study concluded that diagnostic accuracy of maternal early warning tools (MEWTs) in predicting maternal morbidity is quite high.
References
2. Isaacs RA, Wee MY, Bick DE, Beake S, Sheppard ZA, Thomas S, et al. A national survey of obstetric early warning systems in the United Kingdom: five years on. Anaesthesia. 2014;69(7):687-92.
3. Carle C, Alexander P, Columb M, Johal J. Design and internal validation of an obstetric early warning score: secondary analysis of the Intensive Care National Audit and Research Centre Case Mix Programme database. Anaesthesia. 2013;68(4):354-67.
4. Edwards SE, Grobman WA, Lappen JR, Winter C, Fox R, Lenguerrand E, et al. Modified obstetric early warning scoring systems (MOEWS): validating the diagnostic performance for severe sepsis in women with chorioamnionitis. Am J Obstet Gynecol. 2015;212(4):536.e1-8.
5. Morgan RJM, Williams F, Wright MM. An early warning scoring system for detecting developing critical illness. Clin Intens Care. 1997;8:100.
6. Kyriacos U, Jelsma J, Jordan S. Monitoring vital signs using early warning scoring systems: a review of the literature. J Nurs Manag. 2011;19:311–30.
7. Mackintosh N, Watson K, Rance S, Sandall J. Value of a modified early obstetric warning system (MEOWS) in managing maternal complications in the peripartum period: an ethnographic study. BMJ Qual Saf. 2014;23(1):26-34.
8. Smith GB, Prytherch DR, Meredith P, Schmidt PE, Featherstone PI. The ability of the National Early Warning Score (NEWS) to discriminate patients at risk of early cardiac arrest, unanticipated intensive care unit admission, and death. Resuscitation. 2013;84:465-70.
9. Singh S, McGlennan A, England A, Simons R. A validation study of the CEMACH recommended modified early obstetric warning system (MEOWS). Anaesthesia. 2012;67:12–8
10. Shields LE, Wiesner S, Klein C, Pelletreau B, Hedriana HL. Use of maternal early warning trigger tool reduces maternal morbidity. Am J Obstet Gynecol. 2016;214(4):527.e1-6.
11. Knight M, Nair M, Tuffnell D, et al. on behalf of MBRRACE-UK. Saving Lives, Improving Mothers’ Care - Surveillance of maternal deaths in the UK 2012-14 and lessons learned to inform maternity care from the UK and Ireland Confidential Enquiries into Maternal Deaths and Morbidity 2009-14. Oxford: National Perinatal Epidemiology Unit, University of Oxford 2016.https://www.npeu.ox.ac.uk/downloads/files/mbrrace-uk/reports/MBRRACEUK%20 Maternal%20Report%202016%20-%20website.pdf [last accessed 20/05/18]
12. Centre for Maternal and Child Enquiries (CMACE). Saving Mothers’ Lives: reviewing maternal deaths to make motherhood safer: 2006–08. The Eighth Report on Confidential Enquiries into Maternal Deaths in the United Kingdom. Br J Obstet Gynaecol 2011;118 (Suppl. 1):1–203
13. Nelligan PJ, Laffey JG. Clinical review: Critical care in pregnancy. Crit Care 2011;15:1014
14. Goldhill DR, White SA, Sumner A. Physiological values and procedures in the 24 h before ICU admission from the ward. Anaesthesia 1999;54:529 – 534.
15. Hedriana HL, Wiesner S, Downs BG, Pelletreau B, Shields LE. Baseline assessment of a hospital-specific early warning trigger system for reducing maternal morbidity. Int J Gynaecol Obstet. 2016;132(3):337-41.
16. Knight M, Kenyon S, Brocklehurst P, Neilson J, Shakespeare J, Kurinczuk J J.(Eds.) on behalf of MBRRACEUK.Saving Lives, Improving Mothers' Care - Lessons learned to inform future maternity care from the UK and Ireland Confidential Enquiries into Maternal Deaths and Morbidity 2009 -12 Oxford: National Perinatal Epidemiology Unit, University of Oxford; 2014
17. Singh S, McGlennan A, England A, Simons R. A validation study of the CEMACH recommended modified early obstetric warning system (MEOWS) Anaesthesia. 2012;67(01):12–18.
18. Shields L E, Wiesner S, Klein C, Pelletreau B, Hedriana H L. Use of Maternal Early Warning Trigger tool reduces maternal morbidity. Am J Obstet Gynecol. 2016;214(04):5270–5.27E8.
19. Clark S L, Christmas J T, Frye D R, Meyers J A, Perlin J B. Maternal mortality in the United States: predictability and the impact of protocols on fatal postcesarean pulmonary embolism and hypertension-related intracranial hemorrhage. Am J Obstet Gynecol. 2014;211(01):320–3.2E10.
20. Singh A, Guleria K, Vaid NB, Jain S. Evaluation of maternal early obstetric warning system (MEOWS chart) as a predictor of obstetric morbidity: a prospective observational study. Eur J Obstet Gynecol Reprod Biol. 2016 Dec;207:11-17.