Assessment of prescribing pattern and adverse drug reaction in patients receiving anticoagulant therapy: A prospective observational study

Abstract

Abstract Introduction Cardiovascular diseases (CVD) are the leading cause of death worldwide as well as a major blockade to sustainable human development. It is among the leading causes of morbidity and mortality. Anticoagulants are among the most essential life‐saving drugs that are generally used in cardiology for the prevention and treatment of many CVD. Objectives To assess the prescribing pattern and adverse drug reaction (ADR) in patients receiving anticoagulant therapy for cardiac diseases. Methodology This was a Prospective Observational study conducted in the Department of Cardiology, SRM Medical College Hospital and Research Center, Kattankulathur including 88 patients for 6 months. Results Out of the 88 patients, the majority were males (73%) compared to females (27%), and the prevalence of CVD was found to be higher in patients above 40 years of age. Various categories of drugs prescribed to the patients were antiplatelets (14.88%), anticoagulants (8.79%), antianginal (13.82%), antihypertensives (15.7%), antihyperlipidemic (7.83%), thrombolytics (0.68%), Ionotropic agents (2.13%), antibiotics (5.31%), and other miscellaneous drugs (36.61%). The anticoagulant dosage regimens prescribed to the patients were categorized into monotherapy (9%), combinational therapy with antiplatelets (38%), and triple therapy (53%). The most commonly prescribed anticoagulant to the patients was Heparin (93.41%), followed by Warfarin (5.49%) and lastly Rivaroxaban (1.10%) respectively. From the details of the prescriptions analyzed, the average number of drugs per patient (prescription) was found to be 11.7. Conclusion Heparin was found to be the most commonly used anticoagulant, Combination therapy of antiplatelets and antihypertensives was observed in most of the prescriptions, which is more effective than a single therapy. Polypharmacy was encountered in the study with an average number of 11.7 drugs per prescription. Several anticoagulant‐related drug interactions were identified and there were two adverse drug reactions with Heparin. The prescribing pattern can be improved by reducing the number of drugs prescribed.

Keywords

• adverse effects
• anticoagulants
• drug therapy