prostaglandin-d2 and Tachycardia

Prostaglandin D2 (PGD2) was infused intravenously into normal male volunteers. Seven subjects received infusions of 16, 32, 64 ng/kg/min and six of these a further dose of 128 ng/kg/min. Each individual's maximum dose was limited by discomfort caused by intense facial flushing and nasal congestion. At these doses there was no significant effect on systolic or diastolic blood pressure nor on spirometric measurements. There was a small but statistically significant tachycardia at 64 and 128 ng/kg/min. Collagen- and adenosine diphosphate (ADP)-induced platelet aggregation ex vivo was not affected at any of the infusion rates. Infused PGD2 is unlikely to be a useful antithrombotic agent.

Topics: Adenosine Diphosphate; Adult; Airway Obstruction; Blood Pressure; Collagen; Flushing; Heart Rate; Humans; Infusions, Parenteral; Male; Platelet Aggregation; Prostaglandin D2; Prostaglandins D; Tachycardia