I actually agree with the inmate in this case. He should still be put to death, but via a different manner. Old sparky still works pretty well regardless of weight. Just to be sure though, let's crank it up a notch.
I weigh about the same as this guy, but I'd imagine his body fat percentage is probably higher than mine. Nurses have a really difficult time getting a vein, and very often when they get a vein, it infiltrates. That's more because I have poor veins than my weight. In addition, doctors have remarked in the past that it takes very large amounts of the drugs they use for anesthesia to have a result on me. My own father, a physician, was present one time during a colonoscopy and endoscopy that his partner performed on me. They both were amazed at how much more diprovan it took to get me to go under as opposed to the average patient. The same thing was told to me by a surgeon a few years ago when it came to general anesthesia, they were even worried at one point supposedly.
So there are two solutions. They guy is going to die anyways right? So either crank up the dosage of the drugs for him, or just use old sparky.
Actually, three if you count gassing him. I don't know how many states still use that though because it's pretty dangerous for all involved.