Can a structured questionnaire identify patients with reduced renal function?

TY - JOUR

T1 - Can a structured questionnaire identify patients with reduced renal function?

AU - Azzouz, Manal

AU - Rømsing, Janne

AU - Thomsen, Henrik

PY - 2014/3

Y1 - 2014/3

N2 - Objectives: To evaluate a structured questionnaire in identifying outpatients with renal dysfunction before MRI or CT in various age groups. Methods: All patients completed a questionnaire with five risk factors indicating renal dysfunction: renal disease, renal surgery, hypertension, gout and diabetes. Serum creatinine determined by the point-of-care (POC) technique and estimated glomerular filtration (eGFR) rate was calculated using CKD-EPI equation. Results: A total of 1,467 patients were enrolled. Thirty-four patients (2 %) had an eGFR <30 ml/min/1.73 m2 and 123 (8 %) had an eGFR <45 ml/min/1.73 m2. Among 55 % of the 1,467 patients reporting at least one risk factor, 30 (4 %) had an eGFR <30 ml/min/1.73 m2 and 105 (13 %) had an eGFR <45 ml/min/1.73 m2. Among 651 patients not reporting a risk factor, 4 (0.6 %) had an eGFR <30 ml/min/1.73 m2 and 18 (3 %) had an eGFR <45 ml/min/1.73 m2. All four patients were >70 years old, and 12 of the 18 patients were >70 years old. Conclusion: The questionnaire used in patients <70 years old and determination of eGFR in patients >70 years old identified all patients with an eGFR between 30 and 45 ml/min/1.73 m2 except 0.4 %. Key points: • A questionnaire can adequately identify patients under 70 with renal dysfunction • 8 % of patients referred to CT/MRI have an eGFR <45 ml/min/1.73 m 2 • 55 % reported risk factors, but renal dysfunction was only found in 13 % • Patients over 70 years should have eGFR determined before CT • eGFR determination is not beneficial when stable MRI agents are used

AB - Objectives: To evaluate a structured questionnaire in identifying outpatients with renal dysfunction before MRI or CT in various age groups. Methods: All patients completed a questionnaire with five risk factors indicating renal dysfunction: renal disease, renal surgery, hypertension, gout and diabetes. Serum creatinine determined by the point-of-care (POC) technique and estimated glomerular filtration (eGFR) rate was calculated using CKD-EPI equation. Results: A total of 1,467 patients were enrolled. Thirty-four patients (2 %) had an eGFR <30 ml/min/1.73 m2 and 123 (8 %) had an eGFR <45 ml/min/1.73 m2. Among 55 % of the 1,467 patients reporting at least one risk factor, 30 (4 %) had an eGFR <30 ml/min/1.73 m2 and 105 (13 %) had an eGFR <45 ml/min/1.73 m2. Among 651 patients not reporting a risk factor, 4 (0.6 %) had an eGFR <30 ml/min/1.73 m2 and 18 (3 %) had an eGFR <45 ml/min/1.73 m2. All four patients were >70 years old, and 12 of the 18 patients were >70 years old. Conclusion: The questionnaire used in patients <70 years old and determination of eGFR in patients >70 years old identified all patients with an eGFR between 30 and 45 ml/min/1.73 m2 except 0.4 %. Key points: • A questionnaire can adequately identify patients under 70 with renal dysfunction • 8 % of patients referred to CT/MRI have an eGFR <45 ml/min/1.73 m 2 • 55 % reported risk factors, but renal dysfunction was only found in 13 % • Patients over 70 years should have eGFR determined before CT • eGFR determination is not beneficial when stable MRI agents are used

U2 - 10.1007/s00330-013-3065-x

DO - 10.1007/s00330-013-3065-x

M3 - Journal article

C2 - 24275804

SN - 0938-7994

VL - 24

SP - 780

EP - 784

JO - European Radiology

JF - European Radiology

IS - 3

ER -