Case Report
Copyright ©The Author(s) 2024.
World J Clin Cases. Mar 6, 2024; 12(7): 1371-1377
Published online Mar 6, 2024. doi: 10.12998/wjcc.v12.i7.1371
Table 1 Naranjo adverse drug reaction probability scale: Items and score
Don’t know
Patient’s score
(1) Are there previous conclusive reports on this reaction?+100+1
(2) Did the adverse event appear after the suspected drug was administered?+2-10+2
(3) Did the adverse reaction improve when the drug was discontinued, or a specific antagonist was administered?+1000
(4) Did the adverse reaction reappear when the drug was re-administered?+2-100
(5) Are there alternative causes (other than the drug) that could on their own have caused the reaction?-1+20-1
(6) Did the reaction reappear when a placebo was given?-1+100
(7) Was the drug detected in the blood (or other fluids) in concentrations known to be toxic?+1000
(8) Was the reaction more severe when the dose was increased, or less severe when the dose was decreased?+1000
(9) Did the patient have a similar reaction to the same or similar drug in any previous exposure?+1000
(10) Was the adverse event confirmed by any objective evidence?+100+1