The nurse is caring for a patient following insertion of a left subclavian central venous catheter (CVC). Which action by the nurse best reduces the risk of catheter-related bloodstream infection (CRBSI)?

Review daily the necessity of the central venous catheter.

Maintain a pressure of 300 mm Hg on the flush bag.

Cleanse the insertion site daily with isopropyl alcohol.

Change the pressurized tubing system and flush bag daily.

Answer and Explanation

The Correct Answer is A

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.

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Correct Answer is C

Explanation

A. Administer amiodarone 200 mg IV push: Amiodarone is used for shockable rhythms like ventricular fibrillation (VF) or pulseless ventricular tachycardia (VT) that are refractory to defibrillation. The rhythm on the monitor is asystole, which is non-shockable, and amiodarone is not indicated here.

B. Defibrillate the client using 200 joules: Defibrillation is only appropriate for shockable rhythms such as VF or pulseless VT. Asystole is not shockable, and defibrillation in this rhythm would be ineffective and inappropriate.

C. CPR until the physician stops the code: The rhythm strip shows asystole, a flatline with no electrical activity. The priority intervention is to initiate and continue high-quality cardiopulmonary resuscitation (CPR) immediately and continue until the code is terminated by the physician. This is consistent with Advanced Cardiac Life Support (ACLS) guidelines.

D. Administer adenosine 12 mg IV push: Adenosine is used to terminate supraventricular tachycardia (SVT) and is not indicated in asystole or during cardiac arrest. It would have no effect in a rhythm with no electrical activity.

A. Cardiovert in the synchronized mode. B. Defibrillate immediately with a biphasic machine. C. Take a full set of vital signs. D. Initiate cardiopulmonary resuscitation.

Correct Answer is B

Explanation

A. Cardiovert in the synchronized mode: Synchronized cardioversion is used for hemodynamically unstable but conscious patients with rhythms like atrial fibrillation or supraventricular tachycardia. It is not appropriate for a pulseless patient with ventricular fibrillation, as synchronization requires detectable R-waves.

B. Defibrillate immediately with a biphasic machine: The rhythm strip shows ventricular fibrillation (VF) a life-threatening arrhythmia characterized by chaotic, irregular waveform with no identifiable PQRST and no effective cardiac output. The patient is unresponsive and pulseless, making immediate defibrillation the priority action, as per Advanced Cardiac Life Support (ACLS) guidelines.

C. Take a full set of vital signs: The client is already unresponsive and pulseless, making a full set of vitals irrelevant at this moment. Immediate resuscitation efforts, including defibrillation and CPR, take priority.

D. Initiate cardiopulmonary resuscitation: While CPR is a critical part of the algorithm for pulseless rhythms, defibrillation is the first priority in ventricular fibrillation when a defibrillator is available and ready. CPR should be started immediately after the shock if no pulse returns.

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