I posed this case to get a few of you thinking and especially give the residents food for thought. It's not always black and white. There's not always a neurologist to talk to and sometimes you have to make the best decision. I find it very difficult to have that "TPA discussion" in a completely unbiased fashion. Inevitably, I get asked "Well, what would you do?" and even if you try to be objective, pt's can pick up on your preferences. At least, in my experience.
I had this case, not exactly... but one similar. There was much confusion on the length of the sx, and no interval deterioration of sx in the ED (but I think you always have to anticipate that scenario..). At one point, it sounded like 100% neurological sx for over a week, then suspicion on my part of intermittent TIAs, but when pressed... again, it sounded as if the pt had consistent neuro deficits. However, you still have a pt presenting within the time window with a technically unresolved neurological deficit which makes them a TPA candidate whether you "really" consider them one or not.
1) Was the complete aphasia and R sided paralysis a TIA with complete resolution revealing an underlying older CVA that would explain the 1 weeks worth of mild dysarthria?
2) Or is this a new stroke with a partial resolution?
Either way, it's tough to tease out the information and not always clear in my opinion. Personally, I don't like to consider a pt like this to be a typical TPA candidate. Prognosis is very good, especially with mild symptoms. I don't think any of us like to risk a bleed on very low NIHSS with good prognosis. I intend to do a more thorough lit search but I'm curious if "very low" NIHSS should be as much of a relative contraindication as "very high" NIHSS.
The consensus that I've found so far seems to vary. I've read some institutional guidelines that mandate NIHSS > 4 for inclusion criteria. This link provides an interesting Q/A and I thought this
take was interesting...
- In terms of rapidly improving symptoms, what is your lowest NIHSS number where you will still go ahead and treat?
I do not think that the absolute number is as important as the perceived disability of the deficit at hand. For example, an NIHSS score of 2 based on an isolated hemianopsia is vastly different than a similar score for minimal weakness and minimal sensory loss both in one extremity. Therefore I would make my decision to treat or not to treat a “mild” stroke or “rapidly improving” stroke entirely on the clinical deficit and trajectory of the patient when I was evaluating them. — Dr. Pancioli
In cases like this, I feel obligated to inform and offer TPA, even if I don't want to give it.