Review of Trend in Incidence and Characteristics of Hospital-acquired Acute Kidney Injury in Hospital Selayang

Subjects will be allocated into this group if they did not acquire Acute Kidney Injury during admission.

CA-AKI is defined by any patient who developed AKI (as per definition below) within 48 hours of hospital admission.

Definition of AKI:

i. An increase in serum creatinine of 0.3 mg/dl (26.5 μmol/l) within 48 hours OR ii. An increase in serum creatinine to more or equal to 1.5 times baseline, which is known or presumed to have occurred within the prior 7 days

Definition for baseline creatinine:

i. The baseline creatinine level is defined as the creatinine level at or within 7 days before the hospital admission, OR ii. at the hospital admission OR iii. the lowest creatinine (excluding the post dialysis creatinine if dialysis is initiated) during the index hospitalisation for those whose baseline creatinine were unknown.

HA-AKI is defined by any patient who developed AKI (as per definition below) after 48 hours of hospital admission.

Definition of AKI:

i. An increase in serum creatinine of 0.3 mg/dl (26.5 μmol/l) within 48 hours OR ii. An increase in serum creatinine to more or equal to 1.5 times baseline, which is known or presumed to have occurred within the prior 7 days

Definition for baseline creatinine:

i. The baseline creatinine level is defined as the creatinine level at or within 7 days before the hospital admission, OR ii. at the hospital admission OR iii. the lowest creatinine (excluding the post dialysis creatinine if dialysis is initiated) during the index hospitalisation for those whose baseline creatinine were unknown.