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Long-term kidney and cardiovascular complications in pediatric cancer survivors.
Journal of Pediatrics 2022 November 4
OBJECTIVE: To describe the burden of adverse kidney and cardiovascular outcomes in patients evaluated by pediatric nephrology in a multidisciplinary survivorship clinic.
STUDY DESIGN: Retrospective chart review of all patients followed by nephrology in our multidisciplinary survivorship clinic from 8/2013-6/2021. Data included clinic blood pressure (BP), longitudinal ambulatory blood pressure monitoring (ABPM), echocardiography, serum creatinine, and first-morning urine protein/creatinine ratios. For patients with multiple ABPMs, results of initial and most recent ABPMs were compared.
RESULTS: Of 422 patients followed in the multidisciplinary cancer survivorship clinic, 130 were seen by nephrology. Median time after therapy completion to first nephrology visit was 8 years. The most common diagnoses were leukemia/myelodysplastic syndrome (27%), neuroblastoma (24%), and Wilms tumor (15%). At last follow-up, 68% had impaired kidney function, 38% had a clinical diagnosis of hypertension, and 12% had proteinuria. There were 91 ABPMs performed in 55 (42%) patients. Patients with multiple ABPMs (n=21) had statistically significant reductions in overall median BP loads: systolic initial load 37% vs. most recent 10% (p=0.005) and diastolic load 36% vs. 14% (p=0.017). Patients with impaired kidney function were more likely to have received ifosfamide. Patients with hypertension were more likely to have received total body irradiation or allogeneic stem cell transplant.
CONCLUSIONS: History of leukemia/myelodysplastic syndrome, neuroblastoma, and Wilms tumor were frequent among survivors seen by nephrology. There was significant improvement in cardiovascular measures with increased recognition of hypertension and subsequent treatment.
STUDY DESIGN: Retrospective chart review of all patients followed by nephrology in our multidisciplinary survivorship clinic from 8/2013-6/2021. Data included clinic blood pressure (BP), longitudinal ambulatory blood pressure monitoring (ABPM), echocardiography, serum creatinine, and first-morning urine protein/creatinine ratios. For patients with multiple ABPMs, results of initial and most recent ABPMs were compared.
RESULTS: Of 422 patients followed in the multidisciplinary cancer survivorship clinic, 130 were seen by nephrology. Median time after therapy completion to first nephrology visit was 8 years. The most common diagnoses were leukemia/myelodysplastic syndrome (27%), neuroblastoma (24%), and Wilms tumor (15%). At last follow-up, 68% had impaired kidney function, 38% had a clinical diagnosis of hypertension, and 12% had proteinuria. There were 91 ABPMs performed in 55 (42%) patients. Patients with multiple ABPMs (n=21) had statistically significant reductions in overall median BP loads: systolic initial load 37% vs. most recent 10% (p=0.005) and diastolic load 36% vs. 14% (p=0.017). Patients with impaired kidney function were more likely to have received ifosfamide. Patients with hypertension were more likely to have received total body irradiation or allogeneic stem cell transplant.
CONCLUSIONS: History of leukemia/myelodysplastic syndrome, neuroblastoma, and Wilms tumor were frequent among survivors seen by nephrology. There was significant improvement in cardiovascular measures with increased recognition of hypertension and subsequent treatment.
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