Publications by authors named "Renato Miranda DE-Melo"

Article Synopsis
  • The study aimed to assess intra-abdominal pressure (IAP) during ventral hernia repair using Lázaro da Silva's technique to prevent complications like hypertension.
  • IAP was measured at four key points during the surgery on 28 patients, finding a slight increase of 0.5 mmHg.
  • Ultimately, the procedure was effective as the increase in IAP did not lead to significant issues such as intra-abdominal hypertension or compartment syndrome.
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Background: It is known that elective inguinal hernioplasties are safe procedures, but in an emergency setting, they have higher rates of complications and hospital costs. Despite this, quantitative studies on the subject in Brazil are still scarce.

Aims: To evaluate the trend in hospitalization rates, hospital mortality, and costs for inguinal hernia in an emergency, regarding gender and age group.

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Polymeric membranes are a viable and sustainable option for the biotechnology industry from an economic and environmental point of view. In this study, we evaluated tissue response and tolerance to the implantation of a polymeric membrane prepared with cashew gum polysaccharide (CGP) associated with polyvinyl alcohol (PVA). The objective was to characterize the biocompatibility of the CGP/PVA membrane in vivo.

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Incisional hernia is a late complication of the most frequent after abdominal surgeries, with resulting morbidity that can worsen the condition. The treatment has been done both by open techniques, using screens or not, and by laparoscopic and robotic methods, which use them systematically. However, introducing a permanent foreign body into the tissues requires more surgical time, despite not closing the parietal defect in most cases and a higher risk of infections.

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Objective: the hernial sac is typically a bilayer structure consisting of connective tissue lined underneath by peritoneum. Some incidental findings on it, like smooth muscle cells and heterotopic ossification, can be explained as the end-stage metaplasia from undifferentiated cells. This study aimed to search for mesenchymal stem cells in the incisional hernial sac by an immuno-histochemistry screening test.

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Inguinal hernias are a frequent problem and their repair is the most commonly performed procedure by general surgeons. In the last years, new principles, products and techniques have changed the routine of surgeons, who need to recycle knowledge and perfect new skills. In addition, old concepts regarding surgical indication and risk of complications have been reevaluated.

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Purpose: To analyze the resistance to medial traction of abdominal wall muscles, before and after performing relaxing incisions.

Methods: Seventeen live pigs were used. After a median laparotomy, the handles were made in the rectus abdominis muscles (RAM) to fit the dynamometer.

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Background: There are several surgical treatment options for inguinal hernia; however, there is no consensus on the literature identifying which surgical technique promotes less postoperative pain.

Aim: To compare the intensity of postoperative pain between the surgical techniques Lichtenstein and transabdominal pre-peritoneal laparoscopy for the treatment of unilateral primary inguinal hernia.

Methods: Were included 60 patients, of which 30 were operated through the Lichtenstein technique and 30 patients through the transabdominal pre-peritoneal laparoscopy.

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The heterotopic ossification (HO) on abdominal scars is a rare but very unconfortable finding. It causes pain, induration and discomfort in the scar, leading patients to undergo reoperation. This report aims to describe a case of HO, and especially to call attention of surgeons to fibroblast transforming potential, once its close relationship with HO is undeniable.

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Purpose: To evaluate whether the lining facing the visceral side of polypropylene mesh made with 2-hydroxyethyl methacrylate (p(HEMA)) hydrogel could avoid peritoneal adhesion in female dogs.

Methods: Eight animals (group PP) had a polypropylene mesh implanted to correct a defect in the rectal abdominal muscle, whereas in the other group (group PH) the polypropylene mesh was coated with p(HEMA) composite on the surface facing the peritoneal area.

Results: Adhesions were observed on the mesh in 62.

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Purpose: To investigate if ultrasonic therapy is effective in avoidance of incisional hernia (IH), once the ideal technique for repair of IH is still a non-solved problem, in despite of prostheses usage.

Methods: IH was created by linea alba opening over 20 male Wistar rats, distributed in two groups: one group received the ultrasound, over the wound, during 14 days (5 animals) and the other for 28 days (5 animals), each one with the same number of animals as controls. The ultrasound was applied using a small probe, 1:5 pulse mode, 3.

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