Which treatment for a heart attack requires threading of a narrow tube or catheter through an artery to the heart? ?

The answer would be: balloon angioplasty

Defibrillation is a treatment for arrhythmia, not for heart attack. Beta-blocker is a drug that can be given by oral or intravenous. Angina pectoris is pain that caused by heart attack. A coronary bypass will need a surgeon to open up the rib cage, catheterization will not enough. 

Atp is is our little "pocket" of energy. of course, if you have too little, then it means you have too little energy, and you'll pass out. the way to not have enough, is to have no energy sources (glucose, fats, proteins). you can't have too many atp molecules. cycles like the krebs cycle produce it, but if you have too much of any substrate (or too little for that matter), the cycle stops and atp is no longer made (it stops until substrate levels are such that the process can go on). in any case, this is unlikely since atp is constantly hydrolyzed and remade, even while you're asleep. you won't have too much. if you have zero, you are dead or dying.