Risk threshold for starting low dose aspirin in pregnancy to prevent preeclampsia: an opportunity at a low cost.

Preeclampsia (PE) increases maternal and perinatal morbidity and mortality. Based on a multitude of data from randomized clinical trials, clinical practice guidelines endorse using ASA to prevent PE in women who are "at risk." However, data are lacking about the level of absolute risk to w...

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Main Authors: Emily Bartsch, Alison L Park, John C Kingdom, Joel G Ray
Format: Article
Language:English
Published: Public Library of Science (PLoS) 2015-01-01
Series:PLoS ONE
Online Access:http://europepmc.org/articles/PMC4366221?pdf=render
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author Emily Bartsch
Alison L Park
John C Kingdom
Joel G Ray
author_facet Emily Bartsch
Alison L Park
John C Kingdom
Joel G Ray
author_sort Emily Bartsch
collection DOAJ
description Preeclampsia (PE) increases maternal and perinatal morbidity and mortality. Based on a multitude of data from randomized clinical trials, clinical practice guidelines endorse using ASA to prevent PE in women who are "at risk." However, data are lacking about the level of absolute risk to warrant starting ASA prophylaxis.We present two approaches for objectively determining the minimum absolute risk for PE at which ASA prophylaxis is justified. The first is a new approach-the minimum control event rate (CERmin). The second approach uses a pre-existing concept-the minimum event rate for treatment (MERT). Here we show how the CERmin is derived, and then use the CERmin and the MERT to guide us to a reasonable risk threshold for starting a woman on ASA prophylaxis against PE based on clinical risk assessment. We suggest that eligible women need not be at "high risk" for preeclampsia to warrant ASA, but rather at some modestly elevated absolute risk of 6-10%.Given its very low cost, its widespread availability, ease of administration and its safety profile, ASA is a highly attractive agent for the prevention of maternal and perinatal morbidity worldwide.
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spelling doaj.art-b16234c8579b4b259e3011fdf99d4e1c2022-12-22T00:54:44ZengPublic Library of Science (PLoS)PLoS ONE1932-62032015-01-01103e011629610.1371/journal.pone.0116296Risk threshold for starting low dose aspirin in pregnancy to prevent preeclampsia: an opportunity at a low cost.Emily BartschAlison L ParkJohn C KingdomJoel G RayPreeclampsia (PE) increases maternal and perinatal morbidity and mortality. Based on a multitude of data from randomized clinical trials, clinical practice guidelines endorse using ASA to prevent PE in women who are "at risk." However, data are lacking about the level of absolute risk to warrant starting ASA prophylaxis.We present two approaches for objectively determining the minimum absolute risk for PE at which ASA prophylaxis is justified. The first is a new approach-the minimum control event rate (CERmin). The second approach uses a pre-existing concept-the minimum event rate for treatment (MERT). Here we show how the CERmin is derived, and then use the CERmin and the MERT to guide us to a reasonable risk threshold for starting a woman on ASA prophylaxis against PE based on clinical risk assessment. We suggest that eligible women need not be at "high risk" for preeclampsia to warrant ASA, but rather at some modestly elevated absolute risk of 6-10%.Given its very low cost, its widespread availability, ease of administration and its safety profile, ASA is a highly attractive agent for the prevention of maternal and perinatal morbidity worldwide.http://europepmc.org/articles/PMC4366221?pdf=render
spellingShingle Emily Bartsch
Alison L Park
John C Kingdom
Joel G Ray
Risk threshold for starting low dose aspirin in pregnancy to prevent preeclampsia: an opportunity at a low cost.
PLoS ONE
title Risk threshold for starting low dose aspirin in pregnancy to prevent preeclampsia: an opportunity at a low cost.
title_full Risk threshold for starting low dose aspirin in pregnancy to prevent preeclampsia: an opportunity at a low cost.
title_fullStr Risk threshold for starting low dose aspirin in pregnancy to prevent preeclampsia: an opportunity at a low cost.
title_full_unstemmed Risk threshold for starting low dose aspirin in pregnancy to prevent preeclampsia: an opportunity at a low cost.
title_short Risk threshold for starting low dose aspirin in pregnancy to prevent preeclampsia: an opportunity at a low cost.
title_sort risk threshold for starting low dose aspirin in pregnancy to prevent preeclampsia an opportunity at a low cost
url http://europepmc.org/articles/PMC4366221?pdf=render
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