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Re: Amnioinfusion and bradycardia From: CheriCNM@aol.com Mon Sep 23 15:53:43 1996 Messages sorted by: [ date ][ thread ][ subject ][ author ] Next message: CheriCNM@aol.com: "Re: 18 Week "Previa"" Previous message: David A. Nagey, MD, PhD, PE, FACOG: "low molecular weight heparin" In a message dated 96-09-19 14:38:45 EDT, jason.gardosi@nottingham.ac.uk (Jason Gardosi) writes: << Did these bradycardias occur once the infusion was going, or already on catheter placement? I am not aware that this is a side effect of amnio-infusion itself although cool water on the face can produce a vagal response. We ourselves have only just started amnioinfusion, too few to comment on. We do not warm the fluid if it is already at room temperature. >> The bradycardias have occured withing 5-10 minutes following catheter insertion -- not during the placement, but soon after the patient was repositioned and made comfortable again after the procedure. I've seen this happen after catheter placement alone, and also soon after beginning the infusion. I hadn't thought about the possibility of a vagal response to cool fluids -- definitely food for thought. At conferences where I have heard presentations on amnioinfusion it seemed that the consensus I was hearing was that warming the fluid was unnecessary, so I never have. Especially since you hear so many other things -- that leaving IV fluids in the blanket warmer degrades the vinyl bag and contaminates the fluid, that heating in the microwave is unsafe due to potential "hot spots" and uneven warming. I would feel most comfortable with a blood warmer if it seems that warming the fluid is really necessary. Thanks, everyone, for your input and the helpful references! Cheri Van Hoover, CNM Kaiser Hospital Redwood City, CA Next message: CheriCNM@aol.com: "Re: 18 Week "Previa"" Previous message: David A. Nagey, MD, PhD, PE, FACOG: "low molecular weight heparin"

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