1/30/2024 assignment review check for understanding

What is asystole?

• a flatline EKG

• normal sinus rhythm

•  

  a very slow heart rate

• when there's no electricity or movement in your heart

Describe agonal heart rate.

• the same as asystole

• diastole

• repolarization

• 20-40 beats per minute

What can cause sinus arrhythmia?

• changes in electrode placement

• changes in breathing

• defective heart valves

• defective electrocardiograph

What happens at the QRS complex

• ventricle repolarization

• Atria repolarization

• Ventricles Contract

• Atria depolarization

Which statement is true?

 

• systole and diastole = the same thing

• diastole is contraction, systole is relaxation

• systole is contraction, diastole is relaxation

• diastole is always greater than systole

When does a U wave occur?

• when a patient has very low K+

• when the patient moves during a tracing

• when a patient has very low potassium

• there is never a U wave

What does the Standardization Check?

•  

  the timing of the instrument

  
  

• to see how fast the heart is beating

•  

  to see if the machine is working by checking the voltage

  
  

When do you standardize and EKG?

• Before running an EKG

• Before running an EKG

• Before running an EKG

• Before running an EKG

At what speed is a normal EKG recorded?

• 10mm/sec

• 12mm/sec

• 50mm/sec

• 25 mm/sec