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.