Factors that affect cardiac output in a healthy patient include heart rate, change in position and certain activity of the nervous system, according to Vascular Concepts. Cardiac output refers to the volume of blood the ... More » Science Human Anatomy Organs

According to WebMD, cardiac output is greatest during intense exercise and when a person is approximately in his 20s. The more intense the exercise, the more blood the body's muscle demand from the heart and, therefore, ... More » Health Conditions & Diseases Cardiac Health

Normal urinary output for a child is 1 to 2 ml per hour, according to the Hospital for Sick Children. In older children, the normal output can be up to 30 ml per hour. More » Science Human Anatomy
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Cardiac preload refers to pressure in the left or right ventricles immediately after end-diastole or before systole, notes the Columbia Center for New Media Teaching and Learning. Cardiac preload stretches heart muscles,... More » Science Human Anatomy Organs

The heart rate is the number of times the heart beats every minute. The average normal heart rate is 72 beats per minute, though this number depends on factors such as age, weight, fitness level and personal health. More » Science Human Anatomy Organs

People typically hear a thumping sound in the ear that matches the heart rate due to noise coming from the surrounding blood vessels, according to MDhealth. Sound in the ears, such as thumping, rushing, ringing, whistlin... More » Science Human Anatomy Organs