Blood Pressure Explained (Nursing Physiology)

Описание: Blood pressure is the amount of force caused by blood pressing against the walls of your arteries. It is the sum of heart rate per minute, the volume of blood pumped out with each contraction, and the resistance the heart needs to overcome.

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Heart rate is measured by taking a patient's pulse measurement and it can be impacted by a variety of physiological and psychological factors. While the sinoatrial node controls the heart rate, it is influenced by physiological, psychological, and environmental factors.

The electrical conduction of the heart can be reviewed here    • Electrical Conduction System of the Heart ...  

Heart rate is known to elevate during times of activity, stress, and excitement. It can also be affected by illness, disease, and hormones.

Stroke volume is affected by the amount of blood that can enter the ventricle during atrial systole and many factors can affect the completing emptying of the atrial and the compliance of the ventricles. Preload is the term we use to explain the volume of fluid that enters into the ventricles. In a normal heart, it is estimated to be approximately 70 ml.

The heart sounds are created by the opening and closing of these valves and you can learn more here    • How to Hear S1 and S2 Heart Sounds  

Peripheral resistance (PVR) is a term used to describe how much pressure the heart has to exert in order to overcome the vessel size and compliance. Factors such as atherosclerosis and vasoconstriction will increase the PVR.

To review the blood flow through the heart,    • Blood Flow Through the Heart (Circulatory ...  

Systolic and diastolic blood pressure and defined and hypertension stage 1 and 2 are reviewed.

Additionally, the role of the baroreceptors in the carotid arteries and the renin-angiotensin-aldosterone pathway are touched on to provide an overall view of the factors that affect blood pressure.