Clinical Outcomes of Various Management Strategies for Symptomatic Bradycardia.
2020
OBJECTIVE: To determine clinical outcomes of various management strategies for reversible and irreversible causes of symptomatic bradycardia in the inpatient setting. DESIGN: Retrospective observational study. SETTING: Emergency Room and Inpatient. PARTICIPANTS: Patients presenting to the Emergency Department with symptomatic bradycardia. METHODS: We retrospectively reviewed electronic health records of 518 patients from 2 Mayo Clinic campuses (Rochester and Phoenix) who presented to the emergency department with symptomatic bradycardia (heart rate /=3 days). Study end points included length of stay and adverse events related to bradycardia (syncope, central line-associated bloodstream infections, cardiac arrest, and in-hospital mortality). Patients who received a PPM were further stratified by weekend hospital admission. RESULTS: Heart block occurred in 200 (38.6%) patients, and atrial arrhythmias with slow ventricular response occurred in 239 (46.1%) patients. Reversible causes of bradycardia included medication toxicity in 22 (4.2%) patients and hyperkalemia in 44 (8.5%) patients. Adverse events were similar in patients who underwent early compared to delayed PPM implantation (6.6% vs 12.5%, P=.20), whereas adverse events were higher in patients who received temporary transvenous pacing (19.1% vs 3.4%, P<.001). Weekend admissions were associated with increased temporary transvenous pacing, prolonged median time to PPM implantation by 1 day, and prolonged median length of stay by 2 days. CONCLUSIONS: Delayed PPM implantation was not associated with an increase in adverse events. Weekend PPM implantation should be considered to reduce temporary transvenous pacing and shorten length of stay.
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