The 1600 patients in the study had all suffered from a "certain type" of heart attack. This is a very specific group, when you consider the number
of different types of myocardial event that can cause infarctions. the study does not state exactly what type of cardiac event caused the MI.
I can say from personal experience that if an MI happens in the pre-hospital environment, obese patients are more difficult to resus, due to the
increased difficulty with chest compressions and reduced efficiency of defibrilation due to the larger muscle mass for shocks to pass through.
When releasing the results of studies such as these, care must be taken to ensure that adequate information is given to identify the causitive factors
for heart attacks, one of the major ones being obesity. It's all well and good having a better post-episode prognosis, but it is much preferable to
prevent the episode occurring in the first place.

