The actual cost to install a gas fireplace may vary depending on your location, the product selected, complexity of the installation process, additional accessories purchased, and other options. 1  Top vented gas fireplace inserts cost $750 to $3,000, and installation adds another $500 to $1,000. Top vented gas fireplace inserts cost $750 to $3,000, and installation adds another $500 to $1,000. 2  Direct-vent gas fireplaces cost $1,000 to $3,500, plus $500 to $1,000 for installation.
Stroke volume is also affected by the body's demand for oxygen, delivery of nutrients to the muscles and tissues and the removal of toxins, explains Cheetah Medical. For example, exercise increases the demand for oxygen, which results in a faster heart rate and increased stroke volume. People with a high level of cardiovascular fitness have larger stroke volumes and lower heart rates at rest than people who have a lower level of cardiovascular fitness.
Stroke volume is the amount of blood that is sent out of the heart during the systole stroke of the heartbeat. This is the combined output of both the left and the right ventricles. For a healthy male, this volume is somewhere around 5.6 liters per hour, for a healthy female, 4.9 liters per hour. The factors that could affect stroke volume would be heart disease, any of which narrow the ventricles chambers. Some of these diseases weaken the muscle of the ventricles, causing a decreased heart rate. Atherosclerosis, or hardening of the arteries, can have a dibilitating effect on cardiac output as well.