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Vol. 34. Issue 1.
Pages 43-50 (January 2010)
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Vol. 34. Issue 1.
Pages 43-50 (January 2010)
Tolerance of prostate biopsy with use of local anesthesia and benzodiazepines: a randomized, prospective study
Tolerancia a la biopsia prostática con el uso de anestesia local y benzodiacepinas: estudio prospectivo aleatorizado
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A. Montoliu García
Corresponding author
ana_montoliu@hotmail.com

Author for correspondence.
, J. Juan Escudero, M. Fabuel Deltoro, F. Serrano de la Cruz Torrijos, A. Álvarez Barrera, A. Amorós Torres, M. Ramos de Campos, E. Marqués Vidal
Servicio de Urología, Consorcio Hospital General Universitario de Valencia, Valencia, Spain
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Abstract
Introduction

Prostate biopsy is an uncomfortable procedure, and attempts are therefore being constantly made to try and decrease biopsy-related pain.

Materials and methods

A randomized, prospective study including 160 procedures was designed. Inclusion criteria were: first biopsy, PSA < 15ng/mL, and age under 75 years. Patients were randomized into 4 groups. Group A was the control group, while group B received intracapsular anesthesia (8mL of 2% lidocaine), group C 5 mg of oral clorazepate dipotassium one hour before biopsy, and group D both local anesthesia and clorazepate. Each patient completed a questionnaire including three 10-point visual analog scales for pain immediately after the procedure and 30 minutes later.

Results

Mean pain scores were 5.17 (group A), 1.72 (group B), 2.43 (group C), and 0.88 (group D) in the first questionnaire, and 1.71, 0.25, 0.75 and 0.35 respectively in the second questionnaire. Statistically significant differences were found in the ANOVA test. Group

comparisons showed the following:

  • 1.

    A vs B: statistically significant differences in both questionnaires (p=0.006 and 0.011).

  • 2.

    A vs C: a significant difference was found in the first questionnaire (0.051), but not in the second (0.012).

  • 3.

    A vs D: significant differences in both questionnaires (0.001 and 0.010).

No statistically significant differences were seen in both questionnaires (0.825 and 0.685) when benzodiazepines where added to local anesthesia (B vs D).

Conclusion

Use of benzodiazepines as a single method to decrease biopsy-related pain is not warranted

Keywords:
Prostate cancer
Prostate biopsy
Pain
Local anesthesia
Benzodiazepines
Resumen
Introducción

La biopsia prostática es un procedimiento molesto, lo que condiciona que constantemente intentemos disminuir el dolor durante su realización.

Material y métodos

Diseñamos un estudio prospectivo aleatorizado en el que incluimos 160 procedimientos. Criterios de inclusión: primera biopsia, antígeno prostático específico (PSA) < 15ng/ml, edad menor de 75 años. Los pacientes fueron aleatorizados en 4 grupos. El primero (A) quedó como control, el B recibió anestesia intracapsular (8 ml de lidocaína 2%), el C 5 mg de clorazepato dipotásico vía oral una hora antes y en el D se aplicaron las dos medidas (anestesia local y clorazepato). Se entregó un cuestionario con tres medidas de dolor (valorándolo de 0 a 10) tras el procedimento y otro 30 minutos después.

Resultados

Las medias del dolor fueron 5,17 (A), 1,72 (B), 2,43 (C) y 0,88 (D) en el primer cuestionario. En el segundo fueron 1,71, 0,25, 0,75 y 0,35, respectivamente. La comparación de medias realizada mediante el test de ANOVA pone de manifiesto diferencias significativas.

Al comparar los grupos entre sí encontramos:

  • 1.

    A frente a B: diferencia significativa en ambos cuestionarios (p 0,006 y 0,011).

  • 2.

    A frente a C: no significación en el primer cuestionario (0,051) y sí en el segundo (0,012).

  • 3.

    A frente a D: diferencia en ambos cuestionarios (0,001 y 0,010).

El uso de benzodiacepinas añadidas a la anestesia local (B frente a D) no mostró diferencias estadísticas en ambos cuestionarios (0,825 y 0,685).

Conclusión

Consideramos que el uso de benzodiacepinas no está justificado como método único de control del dolor para la realización de la biopsia prostática.

Palabras clave:
Cáncer de próstata
Biopsia prostática
Dolor
Anestesia local
Benzodiacepinas

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