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Journal Scan
Nephrology

5 factors associated with renal infarction in patients with flank pain

Posted on February 4, 2022

Clinical factors that may help predict renal infarction (RI) in patients with flank pain include age ≥65 years, male sex, atrial fibrillation, current smoker, and no hematuria, according to study results.

Flank pain is a common complaint of patients with RI.

In this retrospective single-center study, 2131 patients complaining of flank pain at a tertiary care hospital were included. Overall, 1.8% (39 patients) of the study participants had RI.

From a multivariable logistic regression analysis, the following were significantly associated with the occurrence of RI:

-Age ≥ 65 years (odds ratio [OR], 3.249; 95% confidence interval [CI], 1.366-7.725; P = 0.008)
-Male sex (OR, 2.846; 95% CI, 1.190-6.808; P = 0.019)
-Atrial fibrillation (OR, 10.386; 95% CI, 3.724-28.961; P < 0.001)
-Current smoker (OR, 10.022; 95% CI, 4.565-22.001; P < 0.001)
-No hematuria (OR, 0.267; 95% CI, 0.114-0.628; P = 0.002)

Reference
Nah S, Han S, Kim HB, et al. Predictors of renal infarction in patients presenting to the emergency department with flank pain: A retrospective observational study. PLoS One. 2021;16(12):e0261054. doi: 10.1371/journal.pone.0261054. PMID: 34874969; PMCID: PMC8651137.

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