Prescribed medications
The number of prescriptions collected for the included patients was 954, with a total of 4871 medication orders, 954 (19.6%) were QTcP inducing drugs. The mean number of QTcP inducing drugs usage among included patients was 2.3 (Range: 1-6). The majority of patients consumed at least one drug with risk of QTcP (37.6%, n=153), 20.6% (n= 84) were using two drugs with risk of QTcP, 18.7% (n= 76) were using three drugs and 16.9b% (n= 69) were using four drugs. Furthermore, 21(5.2%) patients were consuming five QTcP-inducing drugs and 4 patients were using 6 drugs with risk of QTcP. The most common prescribed QTcP-inducing drugs for included patients were Furosemide (36.2%, n=345), Lanzoprazole (28.9%, n=276), and Omeprazole (14.9%, n=142), and they were classified as drugs with conventional risk of QTcP. Whereas, Sodium Valproate, Levofloxacin, and Haloperidol were prescribed only once and they were classified as drugs with known risk of QTcP. Drugs-induced QTcP were listed and classified in Table 2.