A client's cardiac status is being observed by telemetry monitoring

A client’s cardiac status is being observed by telemetry monitoring. The nurse observes a P wave that changes shape in lead II. What conclusion does the nurse make about the P wave? It originates from an ectopic focus. If the P wave is firing consistently from the SA node, the P wave will have a consistent shape in a given lead. If the impulse is from an ectopic focus, then the P wave will vary in shape in that lead. The nurse is assessing the client’s electrocardiography (ECG). What does the P wave on the ECG tracing represent? Depolarization of the atria The ECG tracing of a P wave represents electrical changes caused by atrial depolarization. A nurse notes that the PR interval on a client’s electrocardiograph (ECG) tracing is 0.14 second. What action does the nurse take? Document the finding in the client’s chart. The PR interval normally ranges from 0.12 to 0.20 second. This is a normal finding, so the nurse simply documents this. No further action is required . When analyzing a client’s electrocardiograph (ECG) tracing, the nurse observes that not all QRS complexes are preceded by a P wave. What is the nurse’s interpretation of this observation? Ventricular and atrial depolarizations are initiated from different sites. Normal rhythm shows one P wave preceding each QRS, indicating that all depolarization is initiated at the sinoatrial node. QRS complexes without a P wave indicate a different source of initiation of