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Inicio Actas Urológicas Españolas (English Edition) How does puncture modality affect the risk of intraoperative bleeding during per...
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Vol. 45. Issue 7.
Pages 486-492 (September 2021)
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Vol. 45. Issue 7.
Pages 486-492 (September 2021)
Original article
How does puncture modality affect the risk of intraoperative bleeding during percutaneous nephrolithotomy? A prospective randomized trial
¿Cómo afecta la técnica de punción al riesgo de sangrado intraoperatorio durante la nefrolitotomía percutánea? Ensayo aleatorizado prospectivo
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A. Sahana, A. Cubukb,
Corresponding author
alkancubuk@hotmail.com

Corresponding author.
, O. Ozkaptana, K. Ertasc, T. Toprakd, B. Eryildirima, K. Saricae
a Department of Urology, Kartal Dr. Lutfi Kirdar Traning and Research Hospital, Estambul, Turkey
b Department of Urology, Kırklareli University, Faculty of Medicine, Krıklareli, Turkey
c Department of Urology, Van Yüzüncü Yıl University, Faculty of Medicine, Van, Turkey
d Department of Urology, Fatih Sultan Mehmet Traning and Research Hospital, Estambul, Turkey
e Department of Urology, Biruni University Faculty of Medicine, Estambul, Turkey
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Tables (3)
Table 1. Patients demographics and stone characteristics.
Table 2. Intraoperative and postoperative outcomes according to used imaging modalities in the puncture phase.
Table 3. Modified Clavien classification in both groups.
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Abstract
Introduction and objectives

To evaluate the possible effects of two different renal puncture techniques (ultrasound-assisted [US-assisted], fluoroscopic-guided [FG]) on the intraoperative hemorrhage risk during percutaneous nephrolithotomy (PCNL).

Material and methods

A total of 130 patients with Guy stone scores of 1–2 were prospectively allocated to US-assisted and FG puncture groups by simple randomization. Patients with intraoperative pelvicalyceal rupture and the ones requiring multiple accesses were excluded from the study. Apart from the puncture steps, all other steps of the PCNL procedure were performed with similar techniques by a single surgeon. Patient characteristics, operative data, and postoperative outcomes were compared.

Results

A total of 10 patients were excluded from the study due to intraoperative complications after puncture. Patient demographics and stone characteristics were similar between the two groups (p > 0.05). Mean hemoglobin drop was meaningfully greater in the FG group (1.7 g/dL) when compared with US-assisted group (1.3 g/dL) (p < 0.01). The mean duration of radiation exposure was significantly higher for the FG (p < 0.001). Total operative time, number of attempts for a successful puncture, length of hospital stay, and stone free rates were similar between the groups (p > 0.05). In addition, the remaining complications classified according to the modified Clavien–Dindo grading system were similar between groups (p > 0.05).

Conclusion

US-assisted puncture provides significantly decreased level of hemoglobin drop and radiation exposure time when compared with FG.

Keywords:
Percutaneous nephrolithotomy
Renal puncture
Ultrasound
Fluoroscopy
Hemorrhage
Complication
Urolithiasis
Resumen
Introducción y objetivos

Evaluar los posibles efectos de dos técnicas diferentes de punción renal (guiada por ecografía [GE] o guiada por fluoroscopia [GF]) sobre el riesgo de hemorragia intraoperatoria durante la nefrolitotomía percutánea (NLPC).

Material y métodos

Un total de 130 pacientes con puntuaciones de la escala de Guy de 1–2 fueron asignados prospectivamente a los grupos de punción GE y punción GF mediante aleatorización simple. Se excluyeron del estudio los pacientes que sufrieron rotura pielocalicial durante la cirugía y los que necesitaron múltiples accesos. Aparte de los pasos relacionados con la punción, todos los demás pasos del procedimiento de NLPC fueron realizados con técnicas similares por un único cirujano. Se compararon las características de los pacientes, los datos quirúrgicos y los resultados postoperatorios.

Resultados

Un total de 10 pacientes fueron excluidos del estudio debido a una complicación intraoperatoria tras la punción. Los datos demográficos de los pacientes y las características de los cálculos fueron similares entre los dos grupos (p > 0,05). La media del descenso de hemoglobina fue significativamente mayor en el grupo GF (1,7 g/dl) en comparación con el grupo GE (1,3 g/dl) (p < 0,01). La duración media de la exposición a la radiación fue significativamente mayor en el grupo GF (p < 0,001). El tiempo quirúrgico total, el número de intentos para una punción exitosa, la duración de la estancia hospitalaria y la tasa libre de cálculos fueron similares entre los grupos (p > 0,05). Asimismo, las demás complicaciones clasificadas según la escala modificada de Clavien-Dindo fueron similares entre los grupos (p > 0,05).

Conclusión

La punción guiada por ecografía (GE) proporciona niveles significativamente menores de descenso de hemoglobina y tiempo de exposición a la radiación en comparación con el procedimiento guiado por fluoroscopia (GF).

Palabras clave:
Nefrolitotomía percutánea
Punción renal
Ecografía
Fluoroscopia
Hemorragia
Complicación
Urolitiasis

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