Platelet Aggregability as a Predictor of Restenosis Following Carotid Endarterectomy.
J Stroke Cerebrovasc Dis
; 28(3): 665-671, 2019 Mar.
Article
in En
| MEDLINE
| ID: mdl-30503678
ABSTRACT
BACKGROUND:
Antiplatelet drugs are administered before and after carotid endarterectomies (CEAs), but their efficacy for preventing restenosis remains unclear. Hence, this study aimed to identify associations between postoperative restenosis and platelet aggregability in CEA patients.METHODS:
Thirty-six consecutive CEA patients treated at Tokyo Women's Medical University from May 2013 to March 2015 were included in this retrospective study. Restenosis was defined as a stenosis ratio greater than or equal to 50% per the European Carotid Surgery Trial criteria or peak systolic velocity of 150 cm/s on carotid ultrasound. Platelet aggregability was measured turbidimetrically using a light-transmission platelet aggregometer and analyzed in terms of aggregation profiles for 2 concentrations of collagen used to induce aggregation (.25 and 2.0 µg/mL). Patients were automatically divided into 9 classes (Class 1-9, from the lowest to the highest aggregability) using a software program according to area under their platelet aggregation curves. Each class was subdivided into 10 further gradations for a total of 90 possible scores (10-99) using a software program. Patients were divided into high- and low-platelet aggregability score groups (cut-off = 49).RESULTS:
Data were analyzed for 36 of the 99 patients. Restenosis was observed in 10 (28%) patients. Restenosis incidence was significantly higher in patients with high-platelet aggregability score than in those with low-platelet aggregability score (50.0% [7/14] versus 13.6% [3 of 22] Pâ¯=â¯.0176, odds ratioâ¯=â¯6.34, 95% CI 1.27-31.57).CONCLUSIONS:
Platelet aggregability is a useful metric for predicting and preventing restenosis after CEA. It has potential as an indicator for determining the optimal dose of antiplatelet drugs.Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Platelet Aggregation
/
Endarterectomy, Carotid
/
Carotid Stenosis
Type of study:
Diagnostic_studies
/
Etiology_studies
/
Observational_studies
/
Prognostic_studies
/
Risk_factors_studies
Limits:
Aged
/
Aged80
/
Female
/
Humans
/
Male
/
Middle aged
Country/Region as subject:
Asia
Language:
En
Journal:
J Stroke Cerebrovasc Dis
Journal subject:
ANGIOLOGIA
/
CEREBRO
Year:
2019
Document type:
Article
Affiliation country:
Japan