Free PCT Exam Study Guide Domain 5: ECG

In this section of free PCT Exam Study Guide , we covers ECG (Electrocardiogram) which is mention in domain 5 and represent 15% of PCT exam content. Electrocardiogram includes three essential tasks that every Electrocardiogram Patient Care Technician must learn to operate heart monitoring equipment and record the heart’s electrical activity. These skills help detect heart problems and provide crucial information for patient care decisions.

• Patient Preparation and Lead Placement

• Recording and Rhythm Interpretation

• Equipment Management and Troubleshooting

These are the main topics of ECG (Electrocardiogram) with detail explanation are given below:

a. Patient Preparation and Lead Placement

Positioning and Education of the Patient.

Indicate that an ECG/EKG is a recording of the electric activity of the heart, lasts 5-10 minutes and does not hurt.

Ask the patient to take off jewelry and clothes at the waistline, place a gown that has an opening in the front and lie them on their back comfortably.

Examples include telling the patient “This test indicates the manner in which your heart is beating electrically. You’ll have sticky pads on your chest and arms, and no electricity going into your body.

Proper Electrode Placement

Wipe the skin with alcohol when necessary, and have electrodes touching certain landmarks of the anatomy to get reliable readings.

The 12-lead ECG involves the use of 10 electrodes (4 of which are limb electrodes and 6 of which are chest electrodes).

As an example, V1 is located at right sternal border 4 th intercostal space, V2 is located at left sternal border 4 th intercostal space, and V4 is located at left midclavicle line 5 th intercostal space.

b. Recording and Rhythm Interpretation.

ECG Rhythm Recognition Basics

Learn to distinguish between simple rhythmic patterns: normal sinus rhythm is regular P waves leading to every QRS complex, atrial fibrillation is irregular P waves have no distinct P waves, and premature ventricular contractions (PVC) is wide and abnormal beats that occur early.

To illustrate this example, when you observe a rhythm, which is generally regular with some exceptions of wide beats that seem out of place, these may be PVCs that need to be reported.

Monitoring During Testing

Monitor the patient during the test with a focus on such symptoms as chest pains, dyspnea, or light-headedness and monitor the ECG recording on dangerous rhythm.

When you observe asystole (flatline) or ventricular fibrillation (chaotic rhythm), have a look at the patient, as this could be a loose lead and not an emergency.

As an illustration, a monitor may indicate flatline with the patient speaking normally, so verify all electrode connections.

c. Equipment Management and Troubleshooting

Artifact Recognition and Correction

Artifacts are falsely read because of patient movements, electrical interference or loose electrodes. Common problems include:

• 60-cycle interference: Electrical buzz from nearby equipment

• Muscle tremor: Tremor upon the baseline of the patient because of shivering or tension.

• Baseline wander: Drifting line due to breathing or movement of patient.

In case, as an example, you observe a very wiggly tracing, request the patient to relax the muscles and take the normal breath, or to see whether cold or warm, and give a blanket.

Machine Calibration and Maintenance

Calibrate the ECG machine (standardization mark must be 10mm high), make sure that the paper speed is adjusted to 25mm/second, and disinfect and clean electrodes and cables as recommended by the manufacturer.

To illustrate, make one calibration check at the start of every shift and record any maintenance problems in the equipment log book.

PCT ECG Situational Based Quiz

These EKG monitoring PCT exam questions are real workplace scenarios requiring immediate decision-making rather than theoretical knowledge!