EKG
What is an EKG and what does it do?
it is a test that records the electrical activity of the heart
a magnet that detects signals which are converted to images
- you must be steady
- cannot wear anything magnetic
What does a glucometer do?
identifies sugar amount in blood
What does EKG stand for?
electocardiogram
Why is blood red?
Iron in hemoglobin
What happens during Atrium Depolarization?
-contraction, blood starts to enter ventricle
What do MRIs emit? be specific
radio waves
Which type of glucometer uses the pricking method?
Traditional Glucose moniters.
Does an MRI utilize radiation?
no
Explain how an oximeter works
Depending on how much infrared and red light absorbs in the blood , it calculates oxygen saturation via a photoreceptor.This is possible because oxygenated hemoglobin absorbs more infrared light and deoxygenated hemoglobin absorbs more red light.
What is 'noise'?
It is interference to the EKG reading.
When the MRI is on, does it align or scatter hydrogen atoms.
align
What glucometer provides information using a sensor?
a continuous glucose moniter
Name at least two things that can affect a glucometer reading
- a person's diet
- medications a person takes
What device that we have discussed measures a person's oxygen saturation and pulse rate?
Oximeter
Where does atrial repolarization(relaxation) occur? (which wave)
beginning of QRS complex
Why are MRIs better than other methods?
They are non-invasive and don't produce harmful radiation.
What glucose meter uses provides data via scanning
Hybrid Flash glucose moniter
How does a heart attack occur ? Name a specific cause as well.
blockage of blood flow;can be due to high cholestrol
What are systoles?
Another name for heart contractions
Explain Brachycardia
slow rythym
What is an MRI?
a magnet that detects signals which are converted to images
What group of people is a glucometer helpful to?
Diabetics
What does the QRS complex correspond to?
ventricular depolarization(contraction)
How are heart attacks represented on an EKG reading?
ST segment elevation