Modificação de dispositivo para gastrostomia endoscópica percutânea pela técnica de punção: utilização em pacientes com neoplasia maligna de cabeça e pescoço / A modified device for percutaneous endoscopic gastrostomy by the introducer technique: use in head and neck cancer patients

AUTOR(ES)
DATA DE PUBLICAÇÃO

2009

RESUMO

Head and neck cancer is the fifth most frequent neoplasm in developing countries. Dysphagia resulting from head and neck cancer or its treatment may lead to weight loss and malnutrition. Enteral nutrition is the method of choice of therapy to patients with preserved gastrointestinal tract unable to maintain adequate oral ingestion. Nasogastric or nasoenteral tubes are employed for short-term feeding and gastrostomy or jejunostomy tubes for more than 4 weeks. Percutaneous endoscopic gastrostomy is the most used method due to its safety and efficacy. The pull technique is the most commonly used method consisting in the introduction of a tube into the inflated stomach through the oropharingeal route with endoscopic aid. In those patients, such technique presents limitations due to digestive tract stenosis caused by inflammation, irradiation, or the tumor itself preventing endoscope or tube passage. In this case, failure occurs in approximately 20% of cases. Complications caused by stenosis dilation, infection of the ostomy site, acute airway obstruction, and even implantation of tumor at the puncture site on the abdominal wall have also been reported. Percutaneous endoscopy gastrostomy through introducer technique is the safest alternative for this group of patients because the tube is placed through an abdominal access under endoscopic control. The disadvantages of this method are the risk of displacing the inflated stomach at the moment of puncture and the use of smaller caliber tubes. The advent of the endoscopic gastropexy enables the fixation of the stomach to the abdominal wall preventing gastric displacement at the moment of puncture. Even though, tube caliber problem remains. The aim of this study was to evaluate the modification of a percutaneous endoscopy gastrostomy device with introducer technique regarding procedure feasibility, complications, procedure safety efficacy, and mortality. Thirty patients (mean age: 58 years, 76.7%: male) were included in the study. Mean Karnofsky index was found to be 67.7% and anesthetic risk ASA 1 = 3.3%, ASA 2 = 46.6%, and ASA 3 = 46.6%. Half of the patients had already undergone tracheostomy and 18 (60%) had chemotherapy and radiotherapy associated or in monotherapy. Oral cavity tumors were the most frequent totaling 11 (36.7%) of cases. Half of the patients were diagnosed in the stage IV of the disease, 7 (23.3%) in stage III, 1 (3.3%) in stage II, and 5 (16.7%) had already recurrence. Squamous cell carcinoma was the most frequent histological type in 27 (89.9%) of cases. Stenosis was found in 23 (76.6%) of cases, of which 15 (50%) were found to be isolated and 8 (26.7%), associated to trismus. Patients underwent introducer technique percutaneous endoscopy gastrostomy using modified device, associated to gastropexy, and a 20-Fr balloon tube placement. The procedure was performed in 26 (86.7%) outpatients under sedation and local anesthesia. The most frequent route to the inflated stomach was the oral route in 86.7% of patients and the nasal route in the others. There was no need for digestive dilation for passing the endoscope. The procedure was successful in all cases with no perioperative complications. Patients were followed up in the immediate postoperative period and at 72 hours, 10, 30 and 60 days for the assessment of pain, stoma infection, functionality, tube-related problems, and mortality. No signs of stoma infection were observed through the combined infection score. In the immediate postoperative period, one (3.3%) patient presented diffuse abdominal pain, leading to exploratory laparotomy that revealed massive pneumoperitoneum with no related signs of lesion to other organs and that was considered a major early complication. The majority of patients presented mild, moderate pain in the immediate postoperative period and at 72 hours. Two minor complications (6.6%) were observed: chemical dermatitis due to leakage around the tube on postoperative day 36 and inadvertent tube loss on postoperative day 8 with no signs of complication, so that the tube was repositioned without endoscopy. Two patients (6.6%) presented late rupture of tube balloon that was replaced without endoscopic examination. Dietary infusion was considered to be easily performed in all patients and no tube obstruction up to 60 assessment days was observed. Procedure-related deaths were not observed up to 30 days post intervention. There were two (6.6%) deaths between days 30 and 60 resulting from disease evolution. In conclusion, the application of the modified device for percutaneous endoscopy gastrostomy with introducer technique is feasible, safe, and efficient in outpatients with advanced, obstructive head and neck cancer under sedation, allowing the use of larger caliber, replaceable tube with low complication rates and no procedure-related mortality in this series

ASSUNTO(S)

endoscopia/métodos gastrostomia/métodos gastrostomia/contra-indicações gastrostomy/methods neoplasias de cabeça e pescoço gastrostomy/contraindications head and neck neoplasms endoscopy/methods

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