Improving Corrected QT Interval Monitoring in Critical Care Units: A Single Center Report

Area of Science:

• Critical Care Nursing
• Cardiology
• Quality Improvement

Background:

• Corrected QT (QTc) interval prolongation is a critical risk factor for ventricular tachyarrhythmias.
• Existing recommendations for QTc interval monitoring by critical care nurses are limited and inconsistent.
• The study institution lacked a specific policy for QTc interval monitoring in the intensive care unit.

Purpose of the Study:

• To implement and evaluate a quality improvement initiative for identifying and monitoring patients at risk of QTc interval prolongation.
• To develop and assess a standardized QTc interval monitoring protocol for critical care nurses.
• To improve nursing staff's knowledge and adherence to QTc monitoring guidelines.

Main Methods:

• A QTc interval monitoring protocol was developed based on current guidelines and expert input.
• Nursing staff received comprehensive education on the new monitoring protocol.
• Patient monitoring data and protocol adherence rates were collected before and after implementation.
• Nurses' knowledge was assessed at baseline, immediately post-education, and 4 months later.

Main Results:

• The protocol implementation led to improved identification and monitoring of at-risk patients.
• Nurses' knowledge regarding QTc monitoring significantly increased post-education and was retained over time.
• Protocol adherence varied, with higher rates during day shifts (45.3%) compared to night shifts (38.4%).
• Only 15% of documented QTc prolongation events were reported to physicians.

Conclusions:

• The developed QTc interval monitoring protocol enhanced nurses' capacity to manage patients at risk.
• Despite improved knowledge, adherence rates indicate a need for protocol refinement.
• Further revisions are necessary to optimize the effectiveness of QTc interval monitoring in critical care settings.