Chapter 48: Cardiopulmonary Procedures

What is the normal adult sinus rhythm rate?

60-100 bpm.

What is the cardiac conduction pathway?

SA node -> AV node -> Bundle of His -> right/left bundle branches -> Purkinje fibers.

What does the P wave represent?

Atrial depolarization.

What does the QRS complex represent?

Ventricular depolarization.

What does the T wave represent?

Ventricular repolarization.

Where is V1 placed?

4th intercostal space, right sternal border.

Where is V2 placed?

4th intercostal space, left sternal border.

Where is V4 placed?

5th intercostal space, midclavicular line.

Where is V3 placed?

Midway between V2 and V4.

Where is V5 placed?

Left anterior axillary line, level with V4.

Where is V6 placed?

Left midaxillary line, level with V4.

What is the correct order for 12-lead ECG setup?

Identify/explain -> supine/rest -> expose chest/privacy -> prep skin -> place limb leads -> place chest leads -> enter data -> run tracing -> check quality -> document.

What causes ECG artifact?

Movement, loose electrodes, poor skin contact, electrical interference, muscle tremor.

What should the MA do if artifact appears?

Check patient movement, electrodes, wires, skin prep, and repeat if needed.

What should the MA do for chest pain during ECG?

Notify provider immediately/activate emergency protocol.

What is AED used for?

Analyze rhythm and deliver shock for certain life-threatening arrhythmias.

What is the correct order for AED use?

Turn on AED -> expose chest -> attach pads -> clear patient/analyze -> deliver shock if advised -> resume CPR/follow prompts.