EKG Machine Settings and Artifacts

The video tutorial covers chapter four of EKG studies, focusing on technical aspects like control features, including chart speed and gain, and their impact on EKG readings. It discusses electrical safety, highlighting macro and micro shocks, and explains various artifacts that can affect EKG readings, such as tremors and baseline sway. The tutorial also provides troubleshooting steps for identifying and resolving artifacts, ensuring accurate EKG interpretation.

What is the purpose of the frequency response feature in an EKG machine?

• To adjust the height of the QRS complex

• To filter out noise and artifacts

• To change the default settings

• To increase the speed of the paper

What should be documented on the EKG when settings are changed?

• The patient's name

• The date and time

• The reason for the EKG

• The changes made to the settings

What is the default chart speed setting for an EKG machine?

• 25 millimeters per second

• 10 millimeters per second

• 50 millimeters per second

• 75 millimeters per second

Why might you increase the gain setting on an EKG machine?

• To decrease the height of the QRS complex

• To increase the speed of the paper

• To make the rhythm printout smaller

• To make a flat rhythm more readable

What is a macro shock?

• A small shock from a pacemaker

• A high voltage shock due to inadequate grounding

• A shock caused by a broken wire

• A shock from a faulty electrode

Which artifact is caused by body tremors?

• Somatic tremor

• 60-cycle interference

• Baseline sway

• Broken recording

What can cause baseline sway in an EKG reading?

• Expired electrodes

• Irregular breathing or sweat

• Too many electrical devices nearby

• A broken wire

How can 60-cycle interference be minimized during an EKG?

• By increasing the gain setting

• By turning off nearby electrical devices

• By changing the chart speed

• By using expired electrodes

What should you do if an artifact mimics a life-threatening rhythm?

• Increase the gain setting

• Assume it's a real rhythm

• Ignore it and continue

• Check on the patient to verify

What is a CPR artifact?

• An artifact caused by electrical interference

• An artifact caused by a faulty electrode

• An artifact caused by a broken wire

• An artifact caused by compressions during CPR