Examinando por Autor "Vidal M., Ivar"

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    Cirugía percutánea de la litiasis renal en la era de la litotripsia extracorpórea: Experiencia en 301 pacientes
    (Sociedad de Cirujanos de Chile, 2010) Castillo C., Octavio A.; Vidal M., Ivar; Campos P., Rodrigo; Sepúlveda T., Francisco; Fonerón V., Alejandro; Feria F., Miguel
    Introduction: Percutaneous renal surgery was introduced more than 20 years ago in urological practice. Extracorporeal Shock Wave Lithotripsy (ESWL) enter the urological scene shortly after. Our objective is to show our experience in percutaneous renal surgery after the introduction of the ESWL in our institution. Material and Methods: Surgical outcomes of 301 patients who underwent percutaneous renal surgery as treatment of renal stones were analyzed. This series begins just before the introduction of ESWL in our unit. Results: Renal pelvis was the most frequent localization with 142 cases (47.2%). There were 51 patients with straghorn calculi. 255 (84.7%) were stone free after one single procedure. Residual fragments were managed with many methods, until only 16 patients (5.4%) had residual fragments. Complications occurred in 26 patients (8.9%). There was no mortality. Conclusions: Percutaneous surgery is an important tool in the management of renal stones. In general, renal stones managed with this procedure, are more complex, however the achievement of good results is possible.
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    Lesión diafragmática durante la laparoscopia urológica transperitoneal
    (Sociedad de Cirujanos de Chile, 2010) Castillo C., Octavio A.; Vitagliano, Gonzalo; Vidal M., Ivar
    Introduction: Capnothorax is a rare complication of urologic laparoscopy. However with the increasing use of this technique in a variety of urological procedures, this rare complication is a potential risk. Material and Methods: We analyzed a total of 786 urological procedures performed by transperitoneal laparoscopy in our center. All procedures were performed by the same surgeon: 213 adrenalectomy, 181 simple nephrec-tomies, 143 lymphadenectomies, 118 radical nephrectomies, 107 partial nephrectomies and 24 nephroure-terectomy. Results: A total of 6 patients (0.7%) present diaphragmatic lesions. The diaphragmatic repair was performed totally intracorporeal. One patient required the placement of a pleural drainage. No patient presented complications associated with diaphragmatic injury. Conclusion: Repair of diaphragmatic injury during transperitoneal laparoscopy can be performed successfully by this route. This technique is feasible, reproducible and reliable. This is the largest series reported by a single center
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    Linfadenectomía lumboaórtica asistida por robot en tumor residual postquimioterapia en cáncer testicular
    (Sociedad de Cirujanos de Chile, 2011) Castillo C., Octavio A.; Sepúlveda T., Francisco; Susanibar N., Luis F.; Vidal M., Ivar; Rubio L., Gonzalo
    Introduction: The laparoscopic retroperitoneal lymph node dissection (L-RPLND) has shown results at least comparable to open surgery in terms of perioperative complications and oncological results, but its application in the post chemotherapy scenario is still matter of study. The development of robotic surgery and its advantages over laparoscopic surgery, make this an attractive option for complex procedures. We report our initial experience with robotic-assisted retroperitoneal lymph node dissection (R-RPLND). Methods: We describe the cases of two patients who underwent R-RPLND due to a Post Chemotherapy residual mass of a non-seminomatous testicular cancer. Results: Two patients, 27 and 30 years old, presented with retroperitoneal residual mass after 4 and 6 cycles of Bleomicin, Etoposide and Cis-Platinum. The first patient had a 4.3 cm left para-aortic mass and the other had a 6 cm mass behind the third portion of the duodenum. The mean surgical time was 255 minutes (210-300), with an estimated mean blood loss of 450 cc (100-800) and a mean hospital stay of 60 hours (72-48). The pathologic result was Teratoma in both cases. There was no periopera-tive morbidity. Conclusions: We believe that R-RPLND is a feasible and safe alternative in selected patients. However still needs more experience and longer follow up to asess its oncological outcome.
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    Morbilidad de la linfadenectomía lumboaórtica laparoscópica en pacientes con tumor testicular no seminomatoso en estadío clínico A
    (Sociedad de Cirujanos de Chile, 2009) Castillo C., Octavio A.; Feria F., Miguel; Vidal M., Ivar; Rioja Z., Jorge; Sánchez S., Rafael
    Retroperitoneal Lymph node dissection is part of the treatment of patients with nonseminomatous germ cell tumors stage I (NSGCT). Aim: To report the immediate surgical outcomes of patients subjected to laparoscopic retroperitoneal lymph node dissection. Material and Methods: Prospective analysis of the surgical outcomes of 118 patients aged 15 to 44 years, who underwent Laparoscopic Retroperitoneal Lymph Node Dissection (L-RPLND) for NSGCT stage I. Results: Median blood loss was 50 cc (range 10-1.000 cc), median operative time was 120 min. (range 60-300 min). Mean hospital stay was 41.4 hours. Twelve patients (10.2%) had operative complications. Ten had vascular injuries (8.5%), one had a duodenal injury (0.85%) and one had an acute pulmonary edema (0.85%). Eight lesions were repaired laparoscopically and three required conversion to open surgery. There was no mortality in this series. Conclusions: L-RPLND had an acceptable complication rate in this series of patients. Most of the complications could be resolved laparoscopically
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    Nefrectomía simple laparoscópica NOTES y LESS con el uso de instrumentos laparoscópicos estándar: Experiencia inicial en 3 casos
    (Sociedad de Cirujanos de Chile, 2010) Castillo C., Octavio A.; Vidal M., Ivar; Campos P., Rodrigo; Fonerón V., Alejandro; Feria F., Miguel; Sepúlveda T., Francisco
    Introduction: Natural orifice transluminal endoscopic surgery (NOTES) and Laparoendoscopic Single Site Surgery (LESS) are emerging technologies, which allows to performed surgical procedures avoiding any surgical scars. However there are some problems due to the lack of equipment available for these procedures. The aim of these study is to present our initial experience with the transvaginal nephrectomy NOTES and LESS using standard laparoscopic instruments. Material and Methods: Two female patients (23 and 26 years old) with diagnosis of recurrent urinary tract infection and renal atrophy. A laparoscopic simple nephrectomy with transvaginal NOTES assistance was performed, using one access port for the camera and two abdominal work ports of 10 and 3mm. In a third patient (15 years old) a transumbilical LESS nephrectomy was preformed with the use of standard laparoscopic instruments. Results: Average operative time was 110 min (40-200), with an estimated blood loss of 200 cc. There were no perioperative complications and all patients were discharged 36 hours after surgery. Conclusion: Laparoscopic simple nephrectomy with transvaginal NOTES assistance and LESS are technically feasible with the use of standard laparoscopic instruments. Special access trocars and instruments development for this procedure will allow to performed a pure technique without the use of abdominal incisions.
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    Nefrectomía simple por puerto único (LESS) asistida por robot (da Vinci)
    (Sociedad de Cirujanos de Chile, 2011) Castillo C., Octavio A.; Vidal M., Ivar; Sepúlveda T, Francisco
    Introduction: Minimally invasive surgery in urology is rapidly advancing and Laparo-endoscopic single-site surgery (LESS) is not the exception. Such laparoscopic procedures are technically challenging and require an experienced laparoscopic surgeon due to the lack of port placement triangulation and instrument clashing. The benefit of the da Vinci surgical system has recently introduced to LESS. We present two cases of robotic LESS nephrectomy. Matherials and Methods: Two patients, a female of 23 years old, diagnosed with right renal atrophy secondary to chronic pyelonephritis and one male patient with diagnosis of left staghorn calculi and renal atrophy. Both underwent to a total nephrectomy assisted by the da Vinci S surgical system through a single port incision using the GelPoint® access system. Results: The first surgery was performed without incidents or conversion. The second patient required the installation of an additional robotic port for triangulation. The dock time and the mean operative time was 18 and 110 min. The mean estimated blood loss was 100 cc and the hospital stay was 27 hours. There were no complications. Conclusions: LESS robotic surgery is feasible using current robotic systems. However, there are several limitations. The design of specific technology for the use of the robot through single incision can solve this problem.
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    Ureterectomía radical distal por cáncer urotelial y reconstrucción ureteral asistida por robot
    (Sociedad de Cirujanos de Chile, 2011) Castillo C., Octavio A.; López-Fontana, Gastón; Vidal M., Ivar; Rubio L., Gonzalo; Gómez I., Reynaldo
    Objective: To report a case of distal ureterectomy with robotic-assisted laparoscopic reimplantation using a Boari flap technique. Material and Methods: We report a 55 year old man with a diagnosis of distal ureteral urothelial carcinoma without multifocality. Results: A radical distal ureterectomy and robotic-assisted laparoscopic vesicoureteral reimplantation using a Boari flap technique was performed with the da Vinci S-HD surgical system. The operative time was 210 minutes, the estimated blood loss was 200 mL. The hospital stay was 48 hours, without perioperative complications. The histopathological study showed a high grade non-muscle invasive urothelial carcinoma of the distal ureter (pT1NxMx) with negative margins. Conclusions: The distal radical ureterectomy with Boari replacement is feasible and more precise with robotic assistance. Its oncological role must be demostrated with a larger number of cases.