Tags

Type your tag names separated by a space and hit enter

Thermal effect of holmium laser during ureteroscopic lithotripsy.
BMC Urol. 2020 Jun 15; 20(1):69.BU

Abstract

BACKGROUND

Holmium laser lithotripsy is the most common technique for the management of ureteral stone. Studies founded that holmium laser firing can produce heat which will cause thermal injury towards ureter. The aim of our current study is to explore factors affecting thermal effect of holmium laser during ureteroscopic lithotripsy.

METHODS

An in vitro experimental model is design to simulate the ureteroscopic lithotripsy procedure. Different laser power settings (10w (0.5JX20Hz, 1.0 JX10Hz), 20w (1.0 JX20Hz, 2.0 JX10Hz), 30w (1.5JX20Hz, 3.0 JX10Hz)) with various firing time (3 s, 5 s, 10s) and irrigation flow rates(10 ml/min, 15 ml/min, 20 ml/min and 30 ml/min) were employed in the experiment. The temperature around the laser tip was recorded by thermometer.

RESULTS

The temperature in the "ureter" rises significantly with the increasing laser power, prolonging firing time and reducing irrigation flow. The highest regional temperature is 78.0 °C at the experimental set-up, and the lowest temperature is 23.5 °C. Higher frequency setting produces more heat at the same power. Laser power < =10w, irrigation flow> = 30 ml/min and "high-energy with low-frequency" can permit a safe working temperature.

CONCLUSION

We clarify that the thermal effect of holmium laser is related with both laser working parameters and irrigation flow. The proper setting is the key factor to ensure the safety during ureteroscopic holmium laser lithotripsy.

Authors+Show Affiliations

Department of Urology, Xinchang County Hospital of Traditional Chinese Medicine, Shaoxing, Zhejiang Province, China. urolianghui@163.com.Department of Urology, Xinchang County Hospital of Traditional Chinese Medicine, Shaoxing, Zhejiang Province, China.Department of Urology, Xinchang County Hospital of Traditional Chinese Medicine, Shaoxing, Zhejiang Province, China.Department of Urology, Xinchang County Hospital of Traditional Chinese Medicine, Shaoxing, Zhejiang Province, China.Department of Urology, Xinchang County Hospital of Traditional Chinese Medicine, Shaoxing, Zhejiang Province, China.Department of Urology, Xinchang County Hospital of Traditional Chinese Medicine, Shaoxing, Zhejiang Province, China.Department of Urology, Xinchang County Hospital of Traditional Chinese Medicine, Shaoxing, Zhejiang Province, China.Department of Urology, Xinchang County Hospital of Traditional Chinese Medicine, Shaoxing, Zhejiang Province, China.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

32539828

Citation

Liang, Hui, et al. "Thermal Effect of Holmium Laser During Ureteroscopic Lithotripsy." BMC Urology, vol. 20, no. 1, 2020, p. 69.
Liang H, Liang L, Yu Y, et al. Thermal effect of holmium laser during ureteroscopic lithotripsy. BMC Urol. 2020;20(1):69.
Liang, H., Liang, L., Yu, Y., Huang, B., Chen, J., Wang, C., Zhu, Z., & Liang, X. (2020). Thermal effect of holmium laser during ureteroscopic lithotripsy. BMC Urology, 20(1), 69. https://doi.org/10.1186/s12894-020-00639-w
Liang H, et al. Thermal Effect of Holmium Laser During Ureteroscopic Lithotripsy. BMC Urol. 2020 Jun 15;20(1):69. PubMed PMID: 32539828.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Thermal effect of holmium laser during ureteroscopic lithotripsy. AU - Liang,Hui, AU - Liang,Lijian, AU - Yu,Yin, AU - Huang,Bin, AU - Chen,Jia'nan, AU - Wang,Chaoguo, AU - Zhu,Zhangguo, AU - Liang,Xiaozhong, Y1 - 2020/06/15/ PY - 2020/03/08/received PY - 2020/06/08/accepted PY - 2020/6/17/entrez PY - 2020/6/17/pubmed PY - 2020/6/17/medline KW - Holmium laser KW - Lithotripsy KW - Thermal effect SP - 69 EP - 69 JF - BMC urology JO - BMC Urol VL - 20 IS - 1 N2 - BACKGROUND: Holmium laser lithotripsy is the most common technique for the management of ureteral stone. Studies founded that holmium laser firing can produce heat which will cause thermal injury towards ureter. The aim of our current study is to explore factors affecting thermal effect of holmium laser during ureteroscopic lithotripsy. METHODS: An in vitro experimental model is design to simulate the ureteroscopic lithotripsy procedure. Different laser power settings (10w (0.5JX20Hz, 1.0 JX10Hz), 20w (1.0 JX20Hz, 2.0 JX10Hz), 30w (1.5JX20Hz, 3.0 JX10Hz)) with various firing time (3 s, 5 s, 10s) and irrigation flow rates(10 ml/min, 15 ml/min, 20 ml/min and 30 ml/min) were employed in the experiment. The temperature around the laser tip was recorded by thermometer. RESULTS: The temperature in the "ureter" rises significantly with the increasing laser power, prolonging firing time and reducing irrigation flow. The highest regional temperature is 78.0 °C at the experimental set-up, and the lowest temperature is 23.5 °C. Higher frequency setting produces more heat at the same power. Laser power < =10w, irrigation flow> = 30 ml/min and "high-energy with low-frequency" can permit a safe working temperature. CONCLUSION: We clarify that the thermal effect of holmium laser is related with both laser working parameters and irrigation flow. The proper setting is the key factor to ensure the safety during ureteroscopic holmium laser lithotripsy. SN - 1471-2490 UR - https://www.unboundmedicine.com/medline/citation/32539828/Thermal_effect_of_holmium_laser_during_ureteroscopic_lithotripsy L2 - https://bmcurol.biomedcentral.com/articles/10.1186/s12894-020-00639-w DB - PRIME DP - Unbound Medicine ER -
Try the Free App:
Prime PubMed app for iOS iPhone iPad
Prime PubMed app for Android
Prime PubMed is provided
free to individuals by:
Unbound Medicine.