Low pressure at night

Nurses General Nursing

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Specializes in Surgical Nursing.

I'm a Nurse Tech at a hospital and I have a question about one of my patients...

I don't know all of the details because I don't get alot of info...You know just ADLs how the patient ambulates, ect...

I reported a low pressure at midnight on a woman in her seventies who was in for a total knee replacement probably second or third day post op. I think it was 80 something over 30 something.... We did an EKG... I have no idea what that showed... And I guess the nurse reported it to the doc... She had also been bowel incontinence all day with water diarrhea (stool was neg for c diff)

In the morning her pressure was back up to normal and she was alert with no apparent problems...

The next night I came back and everything was normal but she was recieving two units of blood... Then at about the same time that night I checked her pressure and it was extremely low again, she was difficult to arouse...

The next morning she was back to normal...

I was wondering what could have been the matter with her? I think I heard one of the nurses saying that her H and H was normal and why wouldn't she just get a bolus.... It was like a nightly thing with her. There might not be enough her for ya'll to tell me anything but maybe you could shed some light on this mystery for me.:paw:;)

Specializes in Emergency.

Was she on a PCA? Getting pain meds? That can sometimes drop your blood pressure. At rest, your BP is going to be lower; perhaps the diarrhea, coupled with opiate pain meds caused a low BP?

Specializes in Ortho, Neuro, Detox, Tele.

I'd go anywhere from a normal drop in pressure...due to sleeping...to a problem with circulation/blood leaking out from the surgery, etc....Did you get the pressure last? Or did you wake her up, slap on a cuff, and take a BP..I saved BPs for last after I woke someone up, just because I needed to make sure I got as accurate a reading as possible....

Specializes in Surgical Nursing.

I don't think she was on a PCA... And I absolutely had trouble waking her up... I really couldn't, she slept right through me getting her vitals.

Specializes in ICU/CCU, Home Health/Hospice, Cath Lab,.

You are right! Little information makes it very difficult.

You say no PCA, however was she getting routine narcotics with prn's? Did she get a sleeping pill?

The arousal difficulty is worrisome to me unless we can pinpoint a cause.

As for the rest - I have never seen blood given with a normal H&H unless they were sickle cell. Transient hypotension could be anything from normal dips in sleep cycles, to narcotics, to TIA, to PVD, to sepsis, to etc.

Without any further info, my first guess would be narcotic induced hypotension combined perhaps with sleeping or antianxiety meds.

Sorry wish I could be more help

Pat

Specializes in Cardiac Telemetry, ED.

Did she have a history of CHF and was she on any antihypertensives?

Specializes in Telemetry, CCU.

I was thinking something along the lines of the pt receiving an antihypertensive at bedtime (I have quite a few who take something BID or TID that will make a dose due at bedtime). That would explain a low BP at midnight, but doesn't explain her getting blood. I've had pts that were hard to wake up just from the lack of decent sleep that comes with being hospitalized, so its hard to say if the low BP is related. Hard to figure out without more info :(

Specializes in ICU.

i'd guess beta's given her age......a sleeping pill at bedtime, maybe a few narcs for post op pain.....i wouldn't worry about it too much since everything else seemed to be ok (her heart rate must have been ok or you'd mention it). it's obviously cyclical....how was she at 0400?

No ideas here on what might be happening but just wanted to say, the same thing happens with me.

Everytime I am hospitalized at night my bp PLUMITS it goes so low that the nurse comes is freaking a little bit. I sleep right through everything until she is on her (usually) third attmept to get a good bp at which time she generally wakes me up. I sleep throught everything else. Temp, first couple of bp's and it is not until she wakes me up perpously that I wake up.

I now tend to warn my nurses before I go to sleep that this is a pattern with me that I have noticed in the past.

Only time anything bad has happened with me at night was one time apparently something happened with my breathing (not exactly sure what) because I woke up with an oxygen mask by my face blowing air past me.

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