I've been thinking, and L is very well comparable to Sherlock (specifically the new, modern BBC one, but I'm not picky).
Warning: If you have not gotten past episode 25 of Death Note, do NOT open this.
I have multiple arguments for this.
It's unlikely that that could happen that easily, especially to him.
As seen in Sherlock, it's not that hard to fake no pulse. L was always one step ahead of Light, so why
Also, what do you think happened to Misa at the end?