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DOI: 10.1055/s-0038-1646000
Does Increased Platelet Release Normalize During Anti-Hypertensive Treatment?
Publikationsverlauf
Received 12. Januar 1987
Accepted after revision 15. Mai 1987
Publikationsdatum:
28. Juni 2018 (online)
![](https://www.thieme-connect.de/media/10.1055-s-00035024/198703/lookinside/thumbnails/10-1055-s-0038-1646000-1.jpg)
Summary
Blood platelet function was evaluated in 10 men, all 50 years old, with untreated, mild hypertension. Each patient was examined four times: At the beginning of the study, after 5 weeks on placebo treatment, after the following 5 weeks on propranolol 160 mg daily, and finally after a second period of 5 weeks on placebo. At baseline the plasma level of the platelet release product (β-thromboglobulin (BTG) was 41.6 (30.5-57.0) μg/l (median and 95% confidence interval). During the first placebo period BTG was normalized to 21.0 (14.1-25.9) μg/l. While systolic blood pressure and heart rate fell during β-adrenergic receptor blockade, BTG remained unchanged throughout the rest of the observation periods. Platelet size increased significantly during treatment with β-blocker. The present study indicates that the normalization of elevated platelet function which previously has been reported to occur during anti-hypertensive drug therapy, may be explained by patient adaptation to the blood sampling procedure.
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