Publications by authors named "Gustavo Plasencia"

12 Publications

  • Page 1 of 1

Robotic-assisted ventral and incisional hernia repair with hernia defect closure and intraperitoneal onlay mesh (IPOM) experience.

J Robot Surg 2020 Oct 2;14(5):695-701. Epub 2020 Jan 2.

Jackson South Medical Center, 9195 Sunset Drive, Suite 230, Miami, FL, 33173, USA.

Background: The most common technique described for robotic ventral hernia repair (RVHR) is intraperitoneal onlay mesh (IPOM). With the evolution of robotics, advanced techniques including retro rectus mesh reinforcement, and component separation are being popularized. However, these procedures require more dissection, and longer operative times. In this study we reviewed our experience with robotic ventral/incisional hernia repair (RVHR) with hernia defect closure (HDC) and IPOM.

Methods: Retrospective chart review and follow-up of 31 consecutive cases of ventral/incisional hernia treated between August 2011 and December 2018. Demographics, operative times, blood loss, length of stay (LOS), hernia size, location, and type, mesh size and type, recurrence, conversion to open ventral hernia repair (OVHR) and complications including bleeding, seroma formation and infection were analyzed.

Results: Mean age was 63.9 years old, with median BMI of 31.24 kg/m. Median hernia area was 17 cm. Mean operating time was 142.61 min (SD 59.79). Mean LOS was 1.46 days (range 1-5), with 48% being outpatient, and overnight stay in 32% for pain control. Conversion was necessary in 12.9% cases. Complication rate was 3% for enterotomy. Recurrence was 14.81% after a mean follow-up of 26.96 months. There was significant association of recurrence with COPD history (P = 0.0215) and multiple hernia defects (P = 0.0376).

Conclusion: Our recurrence rate (14.81%) compares favorably to those reported in literature (16.7%) for LVHR with HDC and IPOM. Our experience also indicates that IPOM is associated with satisfactory outcomes, low conversion and complications rates, and short LOS.
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http://dx.doi.org/10.1007/s11701-019-01040-yDOI Listing
October 2020

Advantages of Robotic Right Colectomy With Intracorporeal Anastomosis.

Surg Laparosc Endosc Percutan Tech 2018 Feb;28(1):36-41

Alliance Medical Group, Waterbury Hospital, Middlebury, CT.

Through retrospective review of consecutive charts, we compare the short-term and long-term clinical outcomes after robotic-assisted right colectomy with intracorporeal anastomosis (RIA) (n=89) and laparoscopic right colectomy with extracorporeal anastomosis (LEA) (n=135). Cohorts were similar in demographic characteristics, comorbidities, pathology, and perioperative outcomes (conversion, days to flatus and bowel movement, and length of hospitalization). The RIA cohort experienced statistically significant: less blood loss, shorter incision lengths, and longer specimen lengths than the LEA cohort. Operative times were significantly longer for the RIA group. No incisional hernias occurred in the RIA group, whereas the LEA group had 5 incisional hernias; mean follow-up was 33 and 30 months, respectively. RIA is effective and safe and provides some clinical advantages. Future studies may show that, in obese and other technically challenging patients, RIA facilitates resection of a longer, consistent specimen with less mesentery trauma that can be extracted through smaller incisions.
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http://dx.doi.org/10.1097/SLE.0000000000000384DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5802257PMC
February 2018

A Vertically Placed Clip for Weight Loss: a 39-Month Pilot Study.

Obes Surg 2017 05;27(5):1174-1181

Jackson South Community Hospital, Miami, FL, USA.

Background: Morbid obesity remains one of society's significant medical dilemmas. It is rapidly worsening and expected to affect 35% of the US population by the year 2020. Common current bariatric procedures exist and include, but not limited to, the adjustable gastric band, gastric bypass, and the sleeve gastrectomy. Although beneficial to morbidly obese patients, they also alter the patient's anatomy and involve resections, or require maintenance. The goal of the trial is to show a new minimally invasive vertical gastric clip technique that produces significant weight loss but requires no resection, no change in anatomy, and is reversible.

Methods: From November 2012 to February 2016, prospective collected data from 117 patients was included in the gastric clip trial. The clip consists of a silicone-covered titanium backbone with an inferior hinged opening that separates a medial lumen from an excluded lateral gastric pouch. The inferior opening allows the gastric juices to empty from the fundus and the body of the stomach into the distal antrum.

Results: Weight loss and comorbidities were evaluated among 117 patients over a 39-month period. 66.7% excess weight loss was seen with minimal adverse events. Average length of surgery was 69 min. Average length of stay was 1.3 days. Fifteen of the originally implanted clips were electively removed based on the original protocol, and the other two were removed for displacement of the device.

Conclusion: The vertical, gastric clip trial has shown that excellent weight loss can be achieved without some of the complications seen with historical bariatric procedures. This clip is placed without requiring stapling, resection, malabsorption, change in anatomy, or maintenance. It is also easily reversible.
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http://dx.doi.org/10.1007/s11695-016-2432-5DOI Listing
May 2017

Large-Vessel Sealing in Laparoscopic Colectomy with an Ultrasonic Device.

JSLS 2016 Apr-Jun;20(2)

Department of Surgery, The Royal Surrey County Hospital, Surrey, United Kingdom.

Background And Objective: The Harmonic ACE+7 Shears with Advanced Hemostasis Mode (Ethicon, Somerville, NJ, USA) is an ultrasonic device designed to transect and seal vessels up to 7 mm in diameter. The device applies an algorithm that optimizes ultrasonic energy delivery combined with a longer sealing cycle. The purpose of this study was to assess the initial clinical experience with the Harmonic device by evaluating large-vessel sealing during laparoscopic colectomy in consecutive cases.

Methods: This prospective, multicenter, observational series involved 40 adult patients who were to undergo elective laparoscopic colectomy where dissection and transection of the inferior mesenteric artery was indicated. The primary study endpoint was first-pass hemostasis, defined as a single activation of the Advanced Hemostasis Mode to transect and seal the inferior mesenteric artery. The use of any additional energy device or hemostatic product to establish or maintain hemostasis was noted. Patients were observed after surgery for ∼4 weeks for adverse events that were considered to be related to the study procedure or study device. Descriptive statistical analyses were performed for study endpoints.

Results: Forty patients underwent the laparoscopic colectomy procedure. First-pass hemostasis of the inferior mesenteric artery was achieved and maintained in all 40 patients, with no required additional hemostatic measures. Exposure of the vessel was reported as skeletonized in 22 of 40 (55%) patients. Mean transection time was 21.9 ± 7.4 s. One adverse event (postoperative anemia) was considered possibly related to the study device.

Conclusion: In this initial clinical consecutive series, the device demonstrated successful transection and sealing of the large mesenteric vessels during laparoscopic colorectal surgery.
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http://dx.doi.org/10.4293/JSLS.2016.00010DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4854609PMC
March 2017

Robotic right colectomy with intracorporeal anastomosis: experience with 52 consecutive cases.

J Laparoendosc Adv Surg Tech A 2015 Feb 26;25(2):117-22. Epub 2015 Jan 26.

1 Jackson Medical Group Specialty Physicians, Jackson South Community Hospital , Miami, Florida.

Background: In laparoscopic right hemicolectomy (LRC), extracorporeal or intracorporeal (ICA) anastomosis can be performed. Several authors have suggested advantages to ICA. This study reports our transition to and our experience with robotic right colectomy (RRC) with ICA.

Materials And Methods: From June 2009 to September 2012 we performed 58 consecutive RRCs, of which 52 were with ICA. Data were prospectively stored and retrospectively reviewed.

Results: Twenty-eight female and 30 male patients with a mean age of 71.6 ± 8.3 years (range, 52-89 years) were studied. Indications for surgery included adenocarcinoma (n=30), adenoma (n=20), diverticulitis (n=1), and Crohn's disease (n=1). For RRC with ICA (n=52), mean operative time (OT) was 193.2 ± 42.2 minutes (range, 123-239 minutes). Mean estimated blood loss (EBL) was 47.8 ± 59.5 mL (range, 5-300 mL). Mean length of hospital stay (LOS) was 3.7 ± 3.2 days (range, 1-21 days). Mean extraction-site incision size was 4.61 ± 0.78 cm (range, 2.5-6.5 cm). Mean lymph node harvest was 20.7 ± 8.2 (range, 6-40). Mean specimen length was 18.9 ± 7.2 cm (range 10-37). No intraoperative complications, conversions, or 30-day mortality occurred. Nine postoperative complications (19.1%) occurred, with one anastomotic leak (1.7%). For LRC with ICA as reported in the literature, OT ranges from 136 to 190 minutes, EBL ranges from 0 to 500 mL, median LOS ranges from 3 to 5 days, complication rates range from 6% to 15%, with ileus <22%, and conversion rates are <5%.

Conclusions: RRC with ICA is safe and feasible. OTs and outcomes compare favorably with those published in the literature for LRC with ICA. The robot may facilitate transition to ICA, and if future studies confirm advantages of ICA, the role of RRC may gain importance.
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http://dx.doi.org/10.1089/lap.2014.0199DOI Listing
February 2015

Self-expanding metallic stents for palliation and as a bridge to minimally invasive surgery in colorectal obstruction.

JSLS 2013 Apr-Jun;17(2):204-11

Jackson South Community Hospital, Miami, FL, USA.

Background And Objectives: Acute colorectal obstruction is a potentially life-threatening emergency that requires immediate surgical treatment. Emergency procedures had an associated mortality rate of 10% to 30%. This encouraged development of other options, most notably self-expanding metallic stents. The primary endpoint of this study to is to report our group's experience.

Methods: We performed a retrospective review of 37 patients who underwent self-expanding metallic stent placement for colorectal obstruction between July 2000 and May 2012. Data collected were age, comorbidities, diagnosis, intent of intervention (palliative vs bridge to surgery), complications, and follow-up.

Results: The study comprised 21 men (56.76%) and 16 women (43.24%), with a mean age of 67 years. The intent of the procedure was definitive treatment in 22 patients (59.46%) and bridge to surgery in 15 (40.54%). The highest technical success rate was at the rectosigmoid junction (100%). The causes of technical failure were inability of the guidewire to traverse the stricture and bowel perforation related to stenting. The mean follow-up period was 9.67 months. Pain and constipation were the most common postprocedure complications.

Discussion: The use of a self-expanding metallic stent has been shown to be effective for palliation of malignant obstruction. It is associated with a lower incidence of intensive care unit admission, shorter hospital stay, lower stoma rate, and earlier chemotherapy administration. Laparoscopic or robotic surgery can then be performed in an elective setting on a prepared bowel. Therefore the patient benefits from advantages of the combination of 2 minimally invasive procedures in a nonemergent situation. Further large-scale prospective studies are necessary.
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http://dx.doi.org/10.4293/108680813X13654754534990DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3771786PMC
September 2013

Laparoscopic versus robotic right colectomy: a single surgeon's experience.

J Robot Surg 2013 Jun 13;7(2):95-102. Epub 2011 Oct 13.

Laparoscopic Center of South Florida, Jackson South Community Hospital, 9195 Sunset Drive, Suite 230, Miami, FL, 33173, USA.

There is increased interest in robotic techniques for colon resection, but the role of robotics in colorectal surgery has not yet been defined. The purpose of this study was to compare our recent experience with robotic right colectomy to that with laparoscopic right colectomy. From November 2008 to June 2011, a total of 47 consecutive patients underwent elective, right colectomy: 25 laparoscopic right colectomies (LRC) and 22 robotic right colectomies (RRC). All procedures in this study were performed by a single, board-certified colon and rectal surgeon (H.J.L.). Main outcomes recorded included conversion rate, operative time (OT), estimated blood loss (EBL), length of extraction sites, length of stay (LOS), and complications. Data studied were prospectively recorded in a database and were retrospectively reviewed. Mean OT for LRC was 107 ± 36.7 min (median 98, range 48-207) and for RRC was 189.1 ± 38.1 min (median 185, range 123-288, P < 0.001). Mean total operating room time (TORT) for LRC was 158.6 ± 38.1 min (median 149, range 104-274) and for RRC was 258.3 ± 40.9 (median 251, range 182-372, P < 0.001). The tendency lines for both OT and TORT decreased over time for RRC. EBL for LRC was 70.2 ± 52.9 ml (median 50, range 10-200) and for RRC was 60.8 ± 71.3 ml (median 40, range 10-300, P = 0.037). The mean extraction site length for the laparoscopic group was 5.3 ± 1.3 cm (median 5, range 4-11) and for the robotic group was 4.6 ± 0.7 cm (median 4.5, range 3.5-6, p = 0.008). LOS was similar for both groups, as were complications. No cases were converted to open. No leaks occurred and there was no 30-day mortality. RRC is safe and feasible, with similar outcomes to LRC. Operative times were longer for RRC; however, they compare favorably with times for LRC published in the literature. Extraction site length and EBL were less for RRC. However, further study is necessary to demonstrate the clinical relevance of these findings. We are optimistic that OT and TORT will continue to improve.
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http://dx.doi.org/10.1007/s11701-011-0320-5DOI Listing
June 2013

Laparoscopic sleeve gastrectomy: a retrospective review of 1- and 2-year results.

Surg Endosc 2010 Apr 19;24(4):781-5. Epub 2009 Aug 19.

Department of Surgery, Jackson Memorial Hospital, Miami, FL, USA.

Introduction: Recently, laparoscopic sleeve gastrectomy (LSG) has been added as a surgical treatment for obesity. We report our 1- and 2-year results with LSG.

Methods: From September 2005, we have performed 247 LSGs. We retrospectively reviewed our 1- and 2-year data to assess weight loss, body mass index (BMI), percentage excess weight loss (%EWL), length of stay (LOS), complications, and resolution of diabetes.

Results: A total of 40 patients were eligible for follow-up at 2 years, and 157 patients were eligible for follow-up at 1 year. Data was available on 33/40 patients for 2 years and 131/157 patients for 1 year. Initial mean age, mean weight, and mean BMI for 1-year data were 43.2 years, 270.8 lb, and 44.3 kg/m(2), respectively. Initial mean age, mean weight, and mean BMI for 2-year data were 41.4 years, 273.3 lb, and 45.1 kg/m(2), respectively. Mean weight loss, BMI, and %EWL, for patients at 1 year and 2 years were 89.3 lb, 29.6 kg/m(2), and 78% and 87.5 lb, 30.0 kg/m(2), and 75%, respectively. There was no significant difference between use of 46-Fr, 40-Fr, and 36-Fr bougie with respect to weight loss, BMI or %EWL. Likewise, there was no difference seen between use of 7-cm versus 4-cm antral pouch. Mean LOS for both groups was 1.1 days. A total of 12 complications occurred, including one (0.6%) death and two (1.3%) leaks. A total of 39 patients were diabetic, of whom 32 (82%) were cured of diabetes and the remaining 7 patients had their medications decreased.

Conclusion: Our results show that LSG is a safe and effective weight-loss procedure with results similar to those of gastric bypass. Additional long-term studies are still needed to accurately compare laparoscopic sleeve gastrectomy with gastric bypass and/or gastric banding.
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http://dx.doi.org/10.1007/s00464-009-0619-8DOI Listing
April 2010

Use of surgisis mesh in laparoscopic repair of hiatal hernias.

Surg Laparosc Endosc Percutan Tech 2007 Oct;17(5):365-8

Mercy Hospital, Advanced Surgical Institute, Miami, FL 33133, USA.

Background: Breakdown of the crural closure is a frequent reason for failure of antireflux surgical procedures. This retrospective study aimed to determine the effectiveness of using absorbable mesh in preventing recurrence of hiatal hernia after posterior cruroplasty.

Design: Comparative retrospective analysis.

Method: The charts of 220 adults who underwent antireflux surgery with posterior cruroplasty between 1997 and 2005 were retrospectively reviewed. Patients were divided into 2 groups: posterior cruroplasty+absorbable mesh reinforcement (n=127) and posterior cruroplasty alone (n=93). Symptomatic outcome was assessed by telephone interview in 92 patients (72%) in the mesh group at a median of 3.2 years postoperatively and 59 patients (63%) in the no mesh group of men studied at a median of 3.8 years postoperatively.

Main Outcome Measures: Incidence of recurrence and persistent symptoms.

Results: In the mesh group, 74/92 (80%) patients remained asymptomatic at a median of 3.2 years postoperatively. Of these patients, 31 underwent either an upper endoscopy or an upper gastrointestinal (UGI) series; none had recurrence of hiatal hernia. Of the 18 symptomatic patients, 13 underwent an upper endoscopy or an UGI series to determine the etiology of symptoms; 3 recurrences were confirmed for a 3.3% overall proven recurrence rate. In the no mesh group, 26/59 (44%) patients were symptomatic. Of these, 18 underwent either an upper endoscopy or an UGI series. Recurrence of hernia was confirmed in 12 patients for a 20% overall proven recurrence rate. There were no instances of mesh infection or erosion.

Conclusions: Symptomatic recurrence rates of hiatal hernia after antireflux surgery vary. Recurrence of a hiatal hernia may or may not lead to symptoms. This retrospective analysis demonstrates that absorbable mesh is safe and may lead to a significant reduction in the incidence of symptomatic recurrent hiatal hernia.
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http://dx.doi.org/10.1097/SLE.0b013e318123fc49DOI Listing
October 2007

Laparoscopic management as the initial treatment of acute small bowel obstruction.

JSLS 2006 Oct-Dec;10(4):466-72

Advanced Surgical Institute, Miami, Florida, USA.

Objectives: We prospectively evaluated our experience with laparoscopic management of acute small bowel obstruction (SBO).

Methods: The study group included all patients requiring surgical intervention based on complete mechanical SBO by clinical assessment or who had failed conservative management. Patients with malignant causes were excluded. Experienced laparoscopic surgeons performed all operations.

Results: Between January 1998 to January 2003, 61 patients required operative intervention for acute SBO. Causes included adhesions, internal hernia, incarcerated incisional hernia, and inflammatory bowel disease. Laparoscopic techniques (LAP) alone were successfully used to complete 41 cases (67%). Twenty patients (33%) were converted (CONV) to either mini-laparotomy [7 patients (35%)] or standard midline laparotomy [13 patients (65%)]. A single band was identified in 25 patients (41%). Complications occurred in both groups.

Conclusions: We believe all patients requiring surgery in the setting of acute small bowel obstruction should undergo a laparoscopic approach initially. By specifically identifying those patients with a single band as the cause of obstruction, a significant number of patients will be spared a large laparotomy incision. Conversion should not be viewed as failure, but rather, a sometimes necessary step in the optimal management of these patients.
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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3015746PMC
July 2007

Long-term survival after laparoscopic colon resection for cancer: complete five-year follow-up.

Dis Colon Rectum 2002 Apr;45(4):491-501

Laparoscopic Center of South Florida, HEALTHSOUTH Doctors' Hospital, Miami, Florida 33173, USA.

Purpose: The role of laparoscopic surgery in the cure of colorectal cancer is controversial. The aim of this study was to evaluate long-term survival after curative, laparoscopic resection of colorectal cancer. Specifically, we wanted to review those patients who now had complete five-year follow-up.

Methods: One hundred two consecutive patients (March 1991 to March 1996) underwent laparoscopic colon resections for cancer at one institution and now have complete five-year survival data. Charts were retrospectively reviewed and results compared with conventional surgery, i.e., open colectomy at our institution, and with the National Cancer Data Base during a similar time period.

Results: Fifty-nine male and 43 female patients with an average age of 70 (range, 34-92) years made up the study. Complications occurred in 23 percent of patients, and one patient died (1 percent). Forty-four laparoscopic right colectomies, 2 transverse colectomies, 36 laparoscopic left or sigmoid colectomies, 15 laparoscopic low anterior resections, and 5 laparoscopic abdominoperineal resections were performed. The average number of lymph nodes harvested was 6.6 +/- 0.61 (range, 0-22). Eight cases (7.8 percent) were "converted to open"; i.e., the typical 6-cm extraction site was lengthened to complete mobilization, devascularization, resection, or anastomosis, or a separate incision was required to complete the procedure. There was one extraction-site recurrence and one port-site recurrence; both occurred before the routine use of plastic-sleeve wound protection. The mean follow-up for laparoscopic colon resection patients was 64.4 +/- 2.8 (range, 1-111) months. According to the TNM classification system, 27 patients had Stage I cancer, 37 had Stage II, 23 had Stage III, and 15 had Stage IV. Similar five-year survival rates for laparoscopic and conventional surgery for cancer were noted. The five-year relative survival rates in the laparoscopic colon resection group were 73 percent for Stage I, 61 percent for Stage II, 55 percent for Stage III, and 0 percent for Stage IV. The five-year relative survival rates for the open colectomy and National Cancer Data Base groups were 75 and 70 percent, respectively, for Stage I, 65 and 60 percent for Stage II, 46 and 44 percent for Stage III, and 11 and 7 percent for Stage IV.

Conclusions: Laparoscopic colon resection for cancer is safe and feasible in a private setting. Our data suggest that long-term survival after laparoscopic colon resection for cancer is similar to survival after conventional surgery. Prospective, randomized trials presently under way will likely confirm these results.
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http://dx.doi.org/10.1007/s10350-004-6227-8DOI Listing
April 2002
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