Abstract
Follow-up of abnormal ambulatory laboratory results is often suboptimal. The impact of an ambulatory electronic health record (EHR) on follow-up of markedly elevated blood potassium (K +) results was investigated via a retrospective medical record review—before and after EHR implementation—of patients at an adult primary care practice who had a nonhemolyzed K+ ≥ 6.0 mEq/L. In all, 188 patients in the pre-EHR group and 30 in the EHR group satisfied inclusion criteria. The mean K+ for the 2 groups was 6.3 mEq/L. The EHR group had 4.5 times the odds (95% confidence interval = 1.3-15.8) of having their episodes of hyperkalemia followed up within 4 days. Patients in the EHR group were also more likely to have their blood K+ rechecked within 4 days (63.3% vs 43.6%; P = .044). An ambulatory EHR with a results management system improves documentation and time to follow-up for patients with markedly abnormal lab results.
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