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Updated: Jan 8, 2026

Measurement of Tissue Oxygenation Using Near-Infrared Spectroscopy in Patients Undergoing Hemodialysis
Published on: October 2, 2020
Association Between Pre-Dialysis Nephrology Care Duration and Short-Term Outcomes in Hemodialysis Patients
Haruka Yamada1,2, Daisuke Katagiri1, Naoto Nunose3
1Department of Nephrology, National Center for Global Health and Medicine, Japan Institute for Health Security, Tokyo, Japan.
Introduction:
Despite recommendations for early nephrology referral in CKD stage G4+, emergency dialysis remains common.
Methods:
This retrospective study evaluated whether pre-dialysis nephrology care duration influences outcomes after initiation. We analyzed 388 hemodialysis patients (2014-2022), divided into Short (< 3 months) and Long (> 6 months) care groups. Clinical and socioeconomic factors were compared using Fisher's exact test, Mann-Whitney U test, and Kaplan-Meier analysis.
Results:
The proportion of Short Group patients did not decline over time. Ninety-day survival was significantly lower in the Short Group (p < 0.01). The Long Group had more comorbidities, such as hypertension and diabetes, likely reflecting earlier referral. The Short Group had longer hospital stays, more tunneled catheter use, and fewer AVF placements.
Conclusion:
These findings suggest that nephrology care exceeding 6 months before dialysis may improve short-term survival. Promoting earlier referral of patients with CKD could reduce emergency dialysis and enhance patient outcomes.
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