849
Idiosyncratic factors involving vasopressin receptor affinity and distribution, vasopressin-associated vasodilation in some vascular beds, and the effect of vasopressin on the renin-angiotensin system may further contribute to impaired tissue perfusion.
 adverse event: contribute 
Please tell me event type and its trigger word from given type options. Output format is "type: trigger".  Option: adverse event, potential therapeutic event 
Text: {0} 
Answer:
 adverse event: contribute 