Contractility

Question 1

Five factors that increase myocardial contractility

Answer 1

Increased circulating catecholamines
Inotropes, digoxin, calcium solutions
Hyperthermia
Increased sympathetic nervous system activity
Increased HR

Question 2

Five factors that decrease myocardial contractility

Answer 2

Hypoxia or hypercapnia
Acidosis
BB and dig
Cardiomyopathies
Increased parasympathetic nervous system activation

Question 3

How is myocardial contractility measured?

Answer 3

Cardiac cath or ECHO