Cardiovascular assessment Flashcards
Key functions of the circulatory system?
Supply the body’s cells with oxygen and nutrients.
Remove metabolic waste from the body.
Which circulatory system component is responsible for these functions?
The capillaries.
Why does dyspnoea and/or pink frothy sputum occur?
Blood “backs up” in the pulmonary veins as the heart can’t keep up with the supply.
Why do night sweats occur?
Arteries may become clogged and your heart is forced to overwork. As a result, your body sweats to lower the body’s temperature.
Why does syncope/dizziness occur?
The brain is not perfused because the heart is failing to generate enough cardiac output to send freshly oxygenated blood to the brain.
Why does angina occur?
Blood flow to the heart is impaired.
What happens to the deoxygenated blood during the cardiac cycle?
Deoxygenated blood returns from the body and into the superior & inferior vena cava.
Where does the deoxygenated blood travel to after reaching the superior & inferior vena cava?
Deoxygenated blood travels to the right atrium, through the tricuspid valve and into the right ventricle.
What happens to the deoxygenated blood when it reaches the right ventricle?
The right ventricle contracts, ejecting blood through the pulmonary trunk which branches to the left & right pulmonary arteries.
Where does the blood travel to after reaching the pulmonary arteries?
It goes to the lungs to become oxygenated and returns to the left atrium via the pulmonary veins.
What happens to the oxygenated blood after reaching the left atrium?
It travels through the bicuspid valve and to the left ventricle.
What happens to the oxygenated blood after reaching the left ventricle?
The left ventricle contracts, ejecting blood through the aorta, aortic arch (neck & head), and to the rest of the body.
How are normal heart sounds caused?
By the closure of the heart valves.
S1 (first heart sound) is caused by…?
Caused by the closure of the tricuspid and bicuspid valves.
What does the closure of the tricuspid and bicuspid valve indicate?
The start of ventricular systole, and the peripheral pulse is felt simultaneously or just after.