TY - JOUR

T1 - Posture changes platelet inhibition time after ingestion of prasugrel

AU - Antonsen, Jacob

AU - Bundgaard, Nina

AU - Holmvang, Lene

AU - Engstrøm, Thomas

AU - Iversen, Kasper

N1 - Articles published in the DMJ are “open access”. This means that the articles are distributed under the terms of the Creative Commons Attribution Non-commercial License, which permits any non-commercial use, distribution, and reproduction in any medium, provided the original author(s) and source are credited.

PY - 2018

Y1 - 2018

N2 - INTRODUCTION: Several studies have suggested that supine posture during pill ingestion prolongs oesophageal transit time. Whether ingesting prasugrel in an upright position leads to reduced platelet reactivity during percutaneous coronary intervention remains unclear.METHODS: A total of 20 people were randomly assigned to ingest 60 mg of prasugrel in either the supine or upright position. Platelet reactivity was analysed using the point-of-care assay VerifyNow.RESULTS: In the upright position, the velocity of platelet inhibition was highest between 20 and 40 min. (Δ = 101.9 P2Y12 reaction units (PRU)). In the supine position, the highest value was seen between 40 and 60 min. (Δ = 56.85 PRU). Time to reach the cut-off for reducing peri- and post-operative risk of thrombosis showed a mean difference of 8 min. in favour of the upright group.CONCLUSIONS: A trend towards faster reduction of platelet reactivity was seen when ingesting prasugrel in the upright position compared with the supine position.FUNDING: This work was supported by Oda and Hans Svenningsens Foundation (grant number: BOF-10109). The foundation had no part in the collection, analysis or interpretation of data, or in the writing of the report or the decision to submit the work for publication.TRIAL REGISTRATION: This trial was registered with clinicaltrials.gov (NCT01365741).

AB - INTRODUCTION: Several studies have suggested that supine posture during pill ingestion prolongs oesophageal transit time. Whether ingesting prasugrel in an upright position leads to reduced platelet reactivity during percutaneous coronary intervention remains unclear.METHODS: A total of 20 people were randomly assigned to ingest 60 mg of prasugrel in either the supine or upright position. Platelet reactivity was analysed using the point-of-care assay VerifyNow.RESULTS: In the upright position, the velocity of platelet inhibition was highest between 20 and 40 min. (Δ = 101.9 P2Y12 reaction units (PRU)). In the supine position, the highest value was seen between 40 and 60 min. (Δ = 56.85 PRU). Time to reach the cut-off for reducing peri- and post-operative risk of thrombosis showed a mean difference of 8 min. in favour of the upright group.CONCLUSIONS: A trend towards faster reduction of platelet reactivity was seen when ingesting prasugrel in the upright position compared with the supine position.FUNDING: This work was supported by Oda and Hans Svenningsens Foundation (grant number: BOF-10109). The foundation had no part in the collection, analysis or interpretation of data, or in the writing of the report or the decision to submit the work for publication.TRIAL REGISTRATION: This trial was registered with clinicaltrials.gov (NCT01365741).

KW - Administration, Oral

KW - Adult

KW - Blood Platelets/drug effects

KW - Cross-Over Studies

KW - Humans

KW - Male

KW - Platelet Aggregation Inhibitors/administration & dosage

KW - Prasugrel Hydrochloride/administration & dosage

KW - Standing Position

KW - Supine Position

KW - Time Factors

KW - Young Adult

M3 - Journal article

C2 - 30269747

VL - 65

JO - Danish Medical Journal

JF - Danish Medical Journal

SN - 2245-1919

IS - 10

M1 - A5504

ER -