Blood vessels and blood pressure (lab)

Mean arterial pressure calculation

(Pulse pressure/3) + diastolic pressure -Measured in mmHg

Normal blood pressure in an adult

120/80 mmHg

Hypertension blood pressure

140/90

Mean arterial pressure

Average pressure on the arteries at any given time

Korotkoff sounds

Blood flow sounds

Diastolic pressure

Bottom number

Pulse pressure

Difference between systolic and diastolic pressures

Hypertension

High blood pressure, at rest of 140/90 or more

Where is blood pressure measured

In the brachial artery, about the same level as the heart. Approximately the same blood pressure leaving the aorta

Chronic hypertension

Long lived, does not "go away"

How is blood pressure measured

Measured using a sphygomomanometer and a stethesecope, the shypgomomanometer cuts off the blood flow to the brachial artery, then the pressure is slowly released and the korotkoff sounds are used to determine systolic/diastolic pressures

Acute hypertension

Situational, stressed, white coat syndrome -Not long lived

Pulse pressure calculation

Systolic pressure-diastolic pressure -Measured in mmHg

Blood pressure

Systolic/diastolic pressures

Sphygomomanometer

Tool used to measure blood pressure

Systolic pressure

Top number

The first Korotkoff sound

When blood is able to force it's way through, the first sound is heard, this indicates systolic pressure

No more Korotkoff sounds

When the blood no longer has to force its way through, no more sounds are heard, this indicates diastolic pressure