In one of my stories (not first person, 3PL), the hero (a woman) is knocked unconscious in a car accident. She is stuck in traffic, she sees the other car (a van) coming, she knows it is going to hit her, she instinctively tries to escape but cannot.
The passage is long for something that happens quickly; describing her actions, at the last moment she can't escape and just thinks "no No NO!".
She turned away, belted but wanting to escape, she wanted to scream,
there was no time. The van hit, it jolted her, the window exploded,
then something hit her in the head.
That is the end of Chapter 1, 28.25 submission format pages (5375 words, roughly 190 words each).
The beginning of the next chapter, she wakes up from a coma, disoriented, not remembering the accident at all. It takes a thousand words before she understands she has been in a coma for 10 weeks, and a few thousand more to understand what has happened in those ten weeks, to her and to others.
When writing, do not fall into the trap of thinking word count is a clock. This whole accident, which happened in a few seconds, is a page long. Elsewhere, her full day at work was two pages long. In other words, just because something happens quickly does not mean it needs to be described in a paragraph.
In another story, I have described a warrior in a knife fight that lasted thirty seconds from attack to victory, and I spent two pages on just that.
At least for me, "Bit by a vampire" could be a few hundred words, easily.
Readers in a dramatic moment with life and death circumstances do not mind a lot of words, as long as they are not repetitive, obvious, and are making progress; i.e. the situation is changing in some way. My woman trying to escape the car doesn't give up easily, she tries two sensible things before she is finally hit.