FROM MY PT SCHOOL NOTES · CARDIOPULMONARY · CHAPTER 6
What ECG Findings Should a PT Recognize Before Continuing Activity?
ECG basics should help a PT notice changes, communicate clearly and act appropriately—not overdiagnose a rhythm from a quick glance at the monitor.
1. Know what the basic ECG waves represent
An electrocardiogram records electrical activity of the heart from leads placed on the body. The P wave corresponds to atrial depolarization, the QRS complex mainly to ventricular depolarization, and the T wave to ventricular repolarization. The PR interval relates to conduction from atrial activation toward ventricular activation.
That electrical tracing does not directly measure cardiac output or prove a patient is hemodynamically stable. A bedside single-lead display also cannot replace a diagnostic 12-lead ECG.
If the rhythm looks regular, do you know the heart is pumping adequately?
Reasoning: No. Rate and rhythm are important but must be interpreted alongside symptoms, perfusion and other clinical findings.
2. Check signal quality, rate, rhythm and the patient
A simple observational sequence is useful: check that the monitor signal appears reliable, relate the displayed rate to the person, note whether the rhythm is regular or changed and assess for new symptoms or instability.
Motion and poor electrode contact can imitate rhythm abnormalities. But don’t assume artifact when the patient is lightheaded, has new chest discomfort or is becoming unstable. Evaluate the clinical change, communicate promptly and follow local monitoring protocols.
Does movement artifact mean every unexpected monitor reading can be ignored?
Reasoning: No. Check the person and signal quality. A potentially concerning change needs appropriate assessment.
3. Decide when monitoring should change the activity plan
New symptomatic rhythm changes, syncope, ischemic chest discomfort, severe breathlessness or impaired perfusion may require stopping activity and urgent escalation. Your clinical actions follow training, facility procedures and the responsible care team.
When handing off, describe the task, time of symptom onset, symptoms, monitor information, any corroborating vital signs and the response to stopping the activity. Avoid claiming a definitive rhythm diagnosis without the needed evaluation.
What should you communicate when a monitor alerts during ambulation?
Reasoning: Describe the patient’s condition and event context, not simply the alarming number.
Apply it to a clinical situation
Scenario: During a hallway walk, a patient becomes newly lightheaded and telemetry appears irregular. Do you finish the walk to see whether the rhythm settles?
What is the stronger clinical decision?
Reasoning: No. Assist the patient to safety, promptly assess their condition and follow the appropriate escalation pathway while checking signal quality.
Common trap: Trusting the monitor more than the patient’s symptoms—or dismissing a symptomatic change as artifact.
Source notes & learning scope
Original class lectures: “2 Cardiopulmonary EKG Part 1.pdf” and “2 Cardiopulmonary EKG Part 2.pdf.” General current reference: American Heart Association: Electrocardiogram. An independent teaching synthesis, not a published protocol or clinical certification.
