an imbalance in calcium ions.

an infection of the heart muscle.

atherosclerosis involving an attached thrombus.

a disruption of the heart conduction system.

150/95 mmHg .

120/80 mm Hg .

139/89 mm Hg .

160/100 mm Hg .

tachycardia with a rhythm of 250–300 per minute

chaotic contraction of individual groups of ventricular cardiomyocytes

complete dissociation of contractions of the atria and ventricles

group ventricular extrasystole

Myocardial damage due to ischemia

Acute compressive pain behind the sternum lasting more than 10 minutes

Mismatch between the level of coronary perfusion and the metabolic needs of the myocardium

Decreased cardiac contractility

Shortness of breath

Myocardial hypertrophy

Edema

Tachycardia

Decreased glucocorticoids 

Deficit of T 3  and T 4 

Deficit of ADH

 Increased insulin

Temperate regions.

Southwest United States.

Areas bordering the oceans.

Great Lakes or mountainous regions.