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Blood pressure
The pressure that blood exerts against the arterial walls as the heart contracts and relaxes
2 phases of BP
Systole & Diastole
Systole
Heart contracts forcing blood into the system
Average range for systole
90-140 mmhg
Diastole
Heart relaxes
Average range for diastole
60-90 mmhg
Hypertension
Blood pressure over 140/90 mmhg
high BP
Hypotension
Blood pressure under 90/60 mmhm
low bp
What is the device is used to measure BP?
Sphygmomanometer
Two main types of sphygmomanometer
Aneroid & Column of Mercury
aneroid: device that uses a dial gauge and contains no mercury
column of mercury: measures pressure using a column of mercury
Pulse pressure
Different between systolic and diastolic reading between 30-50
Normal BP
120/80
What artery is used for BP?
Brachial artery
2 types of stroke
Ischemic & hemorrhagic
Ischemic stroke
Blood clot interrupts blood flow to brain
Hemorrhagic stroke
Blood vessel ruptures inside brain
Where should BP cuff be placed and why
2 inches above elbow to prevent extraneous sounds