The nurse who is working in the telemetry unit measures the PR interval of the client's rhythm strip depicted below. What is the nurse's analysis of the PR interval?

A. Review daily the necessity of the central venous catheter: One of the most effective strategies to reduce the risk of catheter-related bloodstream infections is to remove the central line as soon as it is no longer needed. Daily evaluation of necessity prevents prolonged catheter use, which significantly increases infection risk. Removing the source of potential infection is the ultimate preventative action.

B. Maintain a pressure of 300 mm Hg on the flush bag: While maintaining appropriate flush pressure is important for catheter patency and preventing blood clots, it does not play a direct role in preventing bloodstream infections. This action is more related to ensuring adequate line function rather than infection control.

C. Cleanse the insertion site daily with isopropyl alcohol: Current guidelines recommend using chlorhexidine-based solutions rather than isopropyl alcohol for skin antisepsis due to better antimicrobial efficacy. Daily site care is important, but the choice of antiseptic is critical in reducing infection risk.

D. Change the pressurized tubing system and flush bag daily: Tubing and flush systems should be changed typically every 72–96 hours unless contamination is suspected. Changing them daily is not recommended and does not provide added protection against infection it may even increase risk with unnecessary manipulation.

A. surgery has caused an episode of supraventricular tachycardia: While stress or surgery can trigger arrhythmias, the ECG shown demonstrates a sinus tachycardia pattern (narrow QRS complexes with identifiable P waves before each QRS), not supraventricular tachycardia (SVT), which typically has a very rapid, regular rhythm often without visible P waves.

B. is febrile which is causing the heart rate to be elevated: The client has a temperature of 102°F (38.8°C), which can increase metabolic demand and lead to sinus tachycardia. Fever is a common and expected cause of elevated heart rate, especially when accompanied by infection, such as the client’s post-op wound infection.

C. is in heart failure and the heart rate is elevated to compensate: There is no evidence from the scenario (no dyspnea, crackles, edema, or reduced BP) that supports heart failure. The elevated HR is more directly related to the fever and infection, not cardiac decompensation.

D. probably has a low oxygen saturation causing an increased respiratory rate: The respiratory rate is slightly elevated (22/min), but there is no mention of hypoxia or oxygen saturation levels. Tachycardia secondary to hypoxia would require clinical indicators of respiratory distress or desaturation, which are not demonstrated.