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. 2011 Spring;19(1):17-21.
doi: 10.1177/229255031101900105.

Liposuction infiltration: The Quito formula - a new approach based on an old concept

Iván Marcelo Cueva Galárraga  1
Affiliations

Liposuction infiltration: The Quito formula - a new approach based on an old concept

Iván Marcelo Cueva Galárraga. Can J Plast Surg. 2011 Spring.

Abstract
in English, French

Introduction: Liposuction is a highly sought after surgical procedure. Despite its popularity, not all of the factors associated with its execution are well understood. No well-established guidelines exist for plastic surgeons regarding the subcutaneous infiltration of fluid and, thus, the procedure is often performed subjectively.

Objective: To establish the usefulness of the Quito formula (infiltrate volume = weight [kg] × percentage of body surface to be liposuctioned × 2.4 [mL]) for calculating the volume of fluid to be infiltrated subcutaneously during small-volume liposuction performed under epidural anesthesia.

Methods: A prospective study was conducted on a group of 50 patients who were candidates for liposuction on multiple body parts between November 2004 and February 2010.

Results: The maximum volume of infiltrate was 5000 mL and the maximum volume of aspirate was 4500 mL, with a 30% total aspirated area. No patient required blood transfusion, and there were no major complications. However, one patient presented with a small local infection, another with a sacral seroma and two patients had postdural puncture headaches. No patient showed clinical signs consistent with overhydration, dehydration, pulmonary embolism, fat embolism or lidocaine intoxication.

Conclusions: When performing small-volume liposuction, subcutaneous infiltration using the Quito formula to calculate the volume of infiltrate proved to be useful, safe and objective.

INTRODUCTION :: La liposuccion est une intervention chirurgicale très recherchée. Malgré sa popularité, les facteurs associés à son exposition ne sont pas tous bien compris. Il n’existe aucune directive bien établie à l’intention des plasticiens au sujet des infiltrations sous-cutanées de liquide et, par conséquent, l’intervention est souvent exécutée de manière subjective.

OBJECTIF :: Établir l’utilité de la formule Quito (volume d’infiltrat = poids [kg] × pourcentage de surface corporelle devant faire l’objet de la liposuccion × 2,4 [mL]) pour calculer le volume de liquide à infiltrer par voie sous-cutanée pendant une liposuccion à faible volume exécutée sous anesthésie péridurale.

MÉTHODOLOGIE :: Les chercheurs ont mené une étude prospective auprès d’un groupe de 50 patients candidats à la liposuccion sur de multiples parties du corps entre novembre 2004 et février 2010.

RÉSULTATS :: Le volume maximal d’infiltrat était de 5 000 mL, et le volume maximal d’aspirat, de 4 500 mL, pour une région aspirée totale de 30 %. Aucun patient n’a dû recevoir de transfusion sanguine, et on n’a constaté aucunes complications majeures. Cependant, un patient a souffert d’une petite infection localisée, un autre, d’un sérome de la région sacrée et deux, de céphalées post-ponction durale. Aucun patient n’a démontré de signes cliniques évocateurs de surhydratation, de déshydratation, d’embolie pulmonaire, d’embolie graisseuse ou d’intoxication à la lidocaïne.

CONCLUSIONS :: Pour effectuer une liposuccion à faible volume, l’infiltration sous-cutanée faisant appel à la formule Quito afin de calculer le volume d’infiltrat s’est révélée utile, sécuritaire et objective.

Keywords: Infiltration; Liposuction; Quito formula; Small volume.

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