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Sleep posture and unilateral renal stone formation
Seyed Amirmohsen Ziaee1, Aliakbar Moradi, Mohammadmehdi Fateh
1Shahid Labbafinejad Medical Center, Shahid Beheshti University, Urology and Nephrology Research Center, Tehran, I.R, Iran. h_susan@hotmail.com
Scandinavian Journal of Urology and Nephrology
|November 26, 2008
Summary
Recurrent kidney stones may be linked to sleep posture. Sleeping on the same side as your kidney stone formation significantly increases your risk, suggesting posture may play a role in urolithiasis.
Area of Science:
- Nephrology
- Urology
- Sleep Medicine
Background:
- Recurrent unilateral urolithiasis lacks a clear etiological hypothesis.
- Previous research suggests sleep posture may influence renal hemodynamics.
Purpose of the Study:
- To investigate the potential association between sleep posture and the development of recurrent unilateral kidney stones.
Main Methods:
- Prospective cohort study involving 38 patients with recurrent unilateral renal stones and 42 healthy controls.
- Sleep posture was objectively recorded using a sleep recorder.
- Statistical analysis included unpaired t test, Mann-Whitney test, and chi-squared test (p<0.05 significant).
Main Results:
- A strong association was found between lateral sleep posture and ipsilateral kidney stone formation.
- Patients with right kidney stones predominantly slept on their right side (88.2%).
- Patients with left kidney stones showed a significant preference for left-side sleeping (61.9%, p=0.0).
Conclusions:
- Sleep posture may play a causative role in the promotion of unilateral urolithiasis.
- Further research is needed to clarify the impact of sleep posture on stone formation.
- Patient education on modifying sleep posture may be beneficial.
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