PMID- 33380161 OWN - NLM STAT- MEDLINE DCOM- 20210510 LR - 20210510 IS - 1940-1574 (Electronic) IS - 0003-3197 (Linking) VI - 72 IP - 5 DP - 2021 May TI - Improving the Assessment of Flow-Mediated Dilation Through Detection of Peak Time in Healthy Subjects and Subjects With Type 2 Diabetes. PG - 434-441 LID - 10.1177/0003319720984884 [doi] AB - The assessment of flow-mediated dilation (FMD) is widely used to quantify endothelial function. Historically, FMD was determined at 60 seconds post-cuff deflation. We investigated whether FMD would be more accurate if determined at maximum dilatory peak (MDP) than at 60 seconds in healthy subjects and subjects with type 2 diabetes mellitus (T2DM). We studied 95 healthy and 72 subjects with T2DM and assessed FMD at MDP, 60 and 90 seconds. Twenty-four healthy and 12 subjects with T2DM underwent a repeat FMD after 28 days. In healthy subjects, FMD at MDP was higher than at 60 and 90 seconds, with mean difference MDP versus 60 seconds 1.14% (95% CI: 0.6-1.7); P < .0001 and MDP versus 90 seconds 1.9% (95% CI: 1.3-2.5) with similar results in T2DM, that is, 1.0% (95% CI: 0.1-1.9) and 2.3% (95% CI: 1.3-3.2), respectively. Intraindividual variability was lowest with MDP compared with 60 and 90 seconds, that is, 15.0 versus 23.2% and 40.0%, respectively, resulting in a more than 2-fold reduction in necessary sample size. In healthy subjects and subjects with T2DM, assessment of FMD using MDP results in a more accurate and precise assessment leading to a substantial reduction in sample size. FAU - Herbrand, Theresa AU - Herbrand T AUID- ORCID: 0000-0003-4534-3982 AD - Profil Institut fur Stoffwechselforschung GmbH, Neuss, Germany. FAU - Coester, Hans-Veit AU - Coester HV AD - Profil Institut fur Stoffwechselforschung GmbH, Neuss, Germany. FAU - Sansone, Roberto AU - Sansone R AD - Division of Cardiology, Pulmonology, and Vascular Medicine, Medical Faculty, University of Dusseldorf, Dusseldorf, Germany. FAU - Fischer, Annelie AU - Fischer A AD - Profil Institut fur Stoffwechselforschung GmbH, Neuss, Germany. FAU - Heiss, Christian AU - Heiss C AD - Department of Clinical and Experimental Medicine, Faculty of Health and Medical Sciences, 3660University of Surrey, Guildford, UK. FAU - Heise, Tim AU - Heise T AD - Profil Institut fur Stoffwechselforschung GmbH, Neuss, Germany. FAU - Kelm, Malte AU - Kelm M AD - Division of Cardiology, Pulmonology, and Vascular Medicine, Medical Faculty, University of Dusseldorf, Dusseldorf, Germany. FAU - DeVries, J Hans AU - DeVries JH AD - Profil Institut fur Stoffwechselforschung GmbH, Neuss, Germany. LA - eng PT - Comparative Study PT - Journal Article PT - Multicenter Study DEP - 20201230 PL - United States TA - Angiology JT - Angiology JID - 0203706 SB - IM MH - Brachial Artery/*diagnostic imaging/physiopathology MH - Case-Control Studies MH - Diabetes Mellitus, Type 2/complications/*diagnostic imaging/physiopathology MH - Diabetic Angiopathies/*diagnostic imaging/etiology/physiopathology MH - Female MH - Germany MH - Humans MH - Male MH - Middle Aged MH - Observer Variation MH - Reproducibility of Results MH - Sample Size MH - Time Factors MH - *Ultrasonography MH - *Vasodilation OTO - NOTNLM OT - endothelial dysfunction OT - flow-mediated dilation OT - type 2 diabetes EDAT- 2021/01/01 06:00 MHDA- 2021/05/11 06:00 CRDT- 2020/12/31 05:17 PHST- 2021/01/01 06:00 [pubmed] PHST- 2021/05/11 06:00 [medline] PHST- 2020/12/31 05:17 [entrez] AID - 10.1177/0003319720984884 [doi] PST - ppublish SO - Angiology. 2021 May;72(5):434-441. doi: 10.1177/0003319720984884. Epub 2020 Dec 30.