To determine the percentage of patients who maintain a therapeutic INR (international normalized ratio) when presenting for their first INR follow-up in the primary care setting after hospital discharge.
Methods
Prospective observational trial enrolling patients newly initiated on warfarin.
Results
Data for 35 patients were collected. Fifty-one percent of patients were therapeutic at their first follow-up lab visit with 23% subtherapeutic and 26% supratherapeutic.
Conclusion
A low percentage of patients were therapeutic and more intervention is necessary in the immediate post-discharge time.
JohnstonJ.A., CluxtonR.J., HeatonP.C.Predictors of warfarin use among Ohio Medicaid patients with new-onset nonvalvular atrial fibrillation.Arch Intern Med.2003; 163: 1705–1710.
6.
ShineD., PatelJ., KumarJ.A randomized trial of initial warfarin dosing based on simple clinical criteria.Thromb Haemost.2003; 89: 297–304.
7.
RobertsG.W., HelboeT., NielsenB.M.Assessment of an age-adjusted warfarin initiation protocol.Ann Pharmacother.2003; 37: 799–803.
8.
DagerW.E., BranchJ.M., KingJ.H.Optimization of inpatient warfarin therapy: impact of daily consultation by pharmacist-managed anticoagulation service.Ann Pharmacother.2000; 34: 567–572.
9.
The Newcastle Anticoagulation Study Group.Effectiveness of anticoagluation among patients discharged from hospital on warfarin.MJA.1998; 169: 243–246.
10.
EllisR.F., StephenM.A., SharpG.B.Evaluation of a pharmacy-managed warfarin-monitoring service to coordinate inpatient and outpatient therapy.Am J Hosp Pharm.1992; 49: 387–394.
