BLOOD PRESSURE AND HEART AND BRAIN ACTIVITY
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What is the blood pressure for an 18 year old male?
120/80 mm Hg
What do you use to measure blood pressure?
What is the blood pressure for a 40 year old female?
133/85 mm Hg
How do you monitor blood pressure?
- - get a sphygmomanometer and wrap the cuff around their upper arm, level with the heart.
- - inflate the cuff by squeezing hand pump, raise pressure enough to flatten the artery in the arm.
- - get a stethoscope and place it over the artery on the arm
- - release the air in the cuff to slowly lower the pressure
- - listen for a tapping noise for the systolic pressure and record the value
- - the cuff pressure is lowered further until the blood flows through the artery even between contractions
- - the tapping sound will disappear and this is the diastolic pressure, it will need to be recorded.
Give two advantages of using a sphygmomanometer
- - less chance of infection as no incision is needed
- - less stressful for the patient, therefore less likely to give a false reading due to stress
Give 2 disadvantages of using a sphygmomanometer
- - less accurate
- - less precise as it is open to human error if using a stethoscope to listen for the pulse
What monitors the heart activity?
What is tachycardia?
What is bradycardia?
what is ventricular fibrillation?
abnormal heart rhythm which is associated with heart attacks
Why do patients need to stay still when having an ECG?
to ensure the electrical activity generated by the muscle movement does not interfere with the trace
Why is gel used?
to improve the electrical conductivity of the electrical signals in an ECG trace
How do you monitor brain activity?
When do alpha waves occur?
when the mind is relaxed
when do beta waves occur
in mental activity
when do delta waves occur?
during deep sleep
what do theta waves occur?
in children and adults under stress
What are the uses of an EEG?
- - monitor brain activity during sleep
- - investigate brain disorders
- - monitor mental activity
- - monitor brain activity during seizures
- - monitor a patient in a coma
What would you like to do?
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