The "pain" caused to the heart due to tissue damage can be misplaced in the body due to these nerve pathways and connections; heart attacks are often felt in the left arm and elsewhere on that side of the body between the heart and brain. 5)

Diuretics would encourage the elimination of sodium and a lessened fluid retention, easing the pressure in his arteries.

6)

The increased acidity in J.M.'s blood indicates reduced heart functionality and creatine phosphokinase levels are elevated which indicates muscle damage; low-normal lactate dehydrogenase suggest no recent prior infarctions, however, and without further tests this particular measure is not especially edifying.

7)

The drug relaxes blood vessels, allowing easier passage of blood reducing chest pain (which...

It should also lead to a weight reduction, which will lower J.M.'s blood pressure and alleviate stress to his heart.
10)

Increased activity yet impaired ability of the heart led to the excess of lactate and the increased acidity, the former from extra muscle activity and the latter from impaired blood processing capabilities.