Renal Safety of CT Angiography and Perfusion Imaging in the Emergency Evaluation of Acute Stroke

Article Figures & Data

Characteristics for the 5 patients who developed CIN

Characteristics	Patients Who Developed CIN
Characteristics	Patient 1	Patient 2	Patient 3	Patient 4	Patient 5
Age, y	75	95	72	34	85
Gender	Female	Male	Female	Male	Female
Stroke type	Ischemic	Ischemic	Hemorrhagic	Hemorrhagic	Ischemic
Risk factors for CIN
Known history of renal impairment	Yes^*	Yes^†	No	No	No
Diabetes	Yes	No	No	No	Yes
Type of contrast scan and number of scans within 24 hours	1 CTA+CTP	1 CTA+CTP	1 CTA	1 CTA	1 CTA+CTP
Creatinine level known at time of contrast CT?	Yes	Yes	Yes	Yes	No
GFR day 0, mL/min	46	42	66	166	64
GFR nadir, mL/min	32	29	52	132	43
Creatinine levels, μmol/L
Day 0	132	102	54	66	92
Day 1	167	95	53	80	97
Day 2	189	85	60	81	133
Day 3	191	147	68	83	109
Type of contrast	Iso-osmolar	Low osmolar	Low osmolar	Low osmolar	Low osmolar
Outcome
Chronic renal failure	No	No	No	No	No
Dialysis	No	No	No	No	No

Note:—CTA indicates CT angiography; CTP, CT perfusion; CIN, contrast-induced nephropathy; GFR, glomerular filtration rate.
* Diabetic nephropathy.
† Polycystic kidney disease.