Int. braz j urol. vol.35 número2

(1)

Can Infundibular Height Predict the Clearance of Lower Pole

Calyceal Stone After Extracorporeal Shockwave Lithotripsy?

M. Arzoz-Fabregas, L. Ibarz-Servio, F. J. Blasco-Casares, M. Ramon-Dalmau, F. J. Ruiz-Marcellan

USP, Instituto Universitario Dexeus, Barcelona, Spain

ABSTRACT

Purpose: 7RHYDOXDWHWKHHI¿FDF\RIH[WUDFRUSRUHDOVKRFNZDYHOLWKRWULSV\6:/RQORZHUFDO\FHDOFDOFXOLLQUHODWLRQWRWKH

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Materials and Methods: :HDQDO\]HGUHWURVSHFWLYHO\SDWLHQWVZLWKVLQJOHUDGLRSDTXHORZHUFDO\FHDOVWRQHVWUHDWHGZLWK

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Results:7KUHHPRQWKVDIWHU6:/WUHDWPHQWSDWLHQWVZHUHVWRQHIUHH15JURXSDQGKDGUHVLGXDOIUDJPHQWV5

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Conclusions: /RZHU,QIXQGLEXODUKHLJKWFRXOGEHDJRRGPHDVXUHPHQWWRROIRUGHFLGLQJZKLFKSDWLHQWVZLWKORZHUFDO\FHDO

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Key words: kidney; kidney calculi; lithotripsy; anatomy; kidney calices

Int Braz J Urol. 2009; 35: 140-50

INTRODUCTION

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(2)

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MATERIALS AND METHODS

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Calculus Parameters

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(3)

Figure 1 – Infundibular width (mm), measured as the narrowest point in the axis of the lower infundibulum.

Figure 2 – Infundibular length (mm), measured as the distance between the most distal point of the calyx containing the calculus and the midpoint of the lower lip of the renal pelvis.

Figure 3 – Infundibular height (mm), measured as the distance between the horizontal line passing through the lowermost part of the calyx containing the calculus and the highest point of the lower lip of the renal pelvis.

Figure 4 – Infundibulopelvic angle (º), described as the angle between the line drawn through the central axis of the lower infundibulum and the ureteropelvic axis.

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(4)

RESULTS

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Table 1 – Patients, stone and collecting system anatomical parameters. Descriptive analysis for all patients and different groups. Correlation of all the variables between group NR (non-residual fragments) and group R (residual fragments).

Parameters All Patients Group NR Group R p Value

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Values are given as mean ± SD, ª for categorical parameters statistical analysis with Fisher exact test was done; b_{for quantitative}

(5)

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Table 2 – Logistic regression analysis.

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BMI = body mass index; I = infundibulum; IPA = infundibulopelvic angle.

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(6)

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COMMENTS

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Accepted after revision: December 10, 2008

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EDITORIAL COMMENT

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Dr. Bannakij Lojanapiwat

(10)

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Dr. Udo Nagele

Klinik für Urologie Universitätsklinikum Tübingen Tübingen, Germany E-mail: [email protected].

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