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Lee L SWANSTRÖM

The Oregon Clinic
Portland, OREGON, Соединенные Штаты
MMD, FACS, FASGE, FRCSEng (Hon)
872 лайков
56.8K просмотров
3 комментариев
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LIVE INTERACTIVE SURGERY: Barrett's esophagus treatment using BARRX™ radiofrequency ablation (RFA) system
Barrett’s esophagus is a metaplastic change in the lining mucosa of the esophagus in response to chronic GERD. The hallmark of specialized Barrett’s epithelium is mucus-secreting goblet cells (intestinal metaplasia). There is an increased risk of adenocarcinoma with intestinal metaplasia. BARRX™ is a new treatment option for Barrett’s esophagus which uses Radio frequency energy and minimizes the risk of developing cancer.
Radio frequency energy is delivered via a catheter to the esophagus, lasts less than a second and creates superficial injury to the mucosa.
Principle: To deliver high power (approx. 300 Watts) in a short period of time. This will allow the depth of penetration to ablate the epithelium and the muscularis mucosa without injuring the submucosa. Overall results are excellent with elimination of dysplasia in 80% of patients and stricture rate to less than 6%.
Side effects: chest pain following the procedure, which can be treated with analgesics.
Bleeding, infection, and perforation requiring surgery are some of the rare complications.
Follow-up: endoscopy at 3 months and ablation repeated if required.
Хирургические операции
3 лет назад
376 просмотров
14 лайков
0 комментариев
11:15
LIVE INTERACTIVE SURGERY: Barrett's esophagus treatment using BARRX™ radiofrequency ablation (RFA) system
Barrett’s esophagus is a metaplastic change in the lining mucosa of the esophagus in response to chronic GERD. The hallmark of specialized Barrett’s epithelium is mucus-secreting goblet cells (intestinal metaplasia). There is an increased risk of adenocarcinoma with intestinal metaplasia. BARRX™ is a new treatment option for Barrett’s esophagus which uses Radio frequency energy and minimizes the risk of developing cancer.
Radio frequency energy is delivered via a catheter to the esophagus, lasts less than a second and creates superficial injury to the mucosa.
Principle: To deliver high power (approx. 300 Watts) in a short period of time. This will allow the depth of penetration to ablate the epithelium and the muscularis mucosa without injuring the submucosa. Overall results are excellent with elimination of dysplasia in 80% of patients and stricture rate to less than 6%.
Side effects: chest pain following the procedure, which can be treated with analgesics.
Bleeding, infection, and perforation requiring surgery are some of the rare complications.
Follow-up: endoscopy at 3 months and ablation repeated if required.
Endoscope-guided Nissen fundoplication
Gastroesophageal reflux (GERD) is a common and almost endemic problem in the Western world. Laparoscopic anti-reflux surgery is an effective and durable treatment for GERD in patients who are well-selected. Selection depends on a careful assessment of symptoms and a thorough physiologic evaluation with endoscopy, pH-monitoring and esophageal manometry. In more advanced and difficult cases, additional tests may be indicated. Cases encountered in practice range from straight forward and "everyday" to extremely complex and difficult; both in the decision-making, the operation, and the patient management. The common thread between all cases of anti-reflux surgery, complex or simple, is a stepwise and organized approach that takes into consideration the individual patient's disease and physiology. We present a case in this video that is not complex but which provides a good illustration of the technical steps required to recreate an effective gastroesophageal valve. We emphasize an atraumatic and efficient approach to the operation that ensures optimal outcomes and will minimize intraoperative complications. We discuss the characteristics of a properly formed fundoplication and debate with other experts some of the minor technical details such as suture patterns and materials. We also show how intraoperative endoscopy can serve as a powerful tool for quality control and postulate that surgeons can improve their results if they adopt routine interoperative control by endoscopy. We hope that you will enjoy and benefit from this case…
Хирургические операции
4 лет назад
2436 просмотров
121 лайков
0 комментариев
36:15
Endoscope-guided Nissen fundoplication
Gastroesophageal reflux (GERD) is a common and almost endemic problem in the Western world. Laparoscopic anti-reflux surgery is an effective and durable treatment for GERD in patients who are well-selected. Selection depends on a careful assessment of symptoms and a thorough physiologic evaluation with endoscopy, pH-monitoring and esophageal manometry. In more advanced and difficult cases, additional tests may be indicated. Cases encountered in practice range from straight forward and "everyday" to extremely complex and difficult; both in the decision-making, the operation, and the patient management. The common thread between all cases of anti-reflux surgery, complex or simple, is a stepwise and organized approach that takes into consideration the individual patient's disease and physiology. We present a case in this video that is not complex but which provides a good illustration of the technical steps required to recreate an effective gastroesophageal valve. We emphasize an atraumatic and efficient approach to the operation that ensures optimal outcomes and will minimize intraoperative complications. We discuss the characteristics of a properly formed fundoplication and debate with other experts some of the minor technical details such as suture patterns and materials. We also show how intraoperative endoscopy can serve as a powerful tool for quality control and postulate that surgeons can improve their results if they adopt routine interoperative control by endoscopy. We hope that you will enjoy and benefit from this case…
POEM endoscopic treatment of achalasia using the EndoFLIP® (Endolumenal Functional Lumen Imaging Probe) imaging system
This is the case of a 75-year-old lady who presented with recurrent symptoms of dysphagia and regurgitation associated with a significant weight loss due to recurrent achalasia. She developed progressive recurrence after a first surgical treatment by an open Heller myotomy and Dor fundoplication back in 1974. This first operation was complicated by an esophageal perforation which required a thoracotomy to be controlled. Several dilatations were attempted with no significant symptoms improvement. One of the most important aspects of POEM is to ensure that the submucosal tunnel adequately extends into the gastric cardia in order to perform a complete and adequate myotomy. To this aim, proper orientation is key but may be difficult even to the experienced eye of the interventional endoscopist familiar with ESD techniques and dissection planes. Six endoscopic cues that assist with this determination have been identified so far. The most useful cue was deemed to be the characteristic appearance of the submucosal space of the cardia of a slightly different color with a somewhat yellowish hue, more capacious than the esophageal submucosal space with more and larger vessels. Identification of the thick, cord-like circular muscle fibers of the lower esophageal sphincter was deemed as the second most useful cue, and noting a bluish coloration of the cardial mucosa from the colored submucosal injection via a retroflexed luminal view was the third most useful cue. Endoscope insertion length within the submucosal tunnel and the palisading mucosal vessels marking the gastroesophageal junction and visible also from inside the submucosal tunnel were deemed helpful but to a lesser degree. Nevertheless, identification of these endoscopic landmarks is not easy nor always reproducible. Creation of the submucosal tunnel is very sensitive to case difficulty and accounts for the large fluctuations in procedure time. Another area of technique variability involves the orientation of the myotomy. In order to improve the recognition of the essential landmarks, we developed a myotomy technique guided by the EndoFLIP® catheter. EndoFLIP® is a unique physiology test that uses both volumetric assessment and pressure readings to calculate compliance and high pressure zones as well as distensibility changes at the gastroesophageal junction. It allows intraoperative assessment of myotomy completion. The use of this device provides a direct immediate feedback with regards to the efficacy of the myotomy. The EndoFLIP® catheter used in this case (EF-325L) has been specifically modified for the POEM procedure. It differs from the standard EndoFLIP® catheter in that it contains an integrated illuminating LED adjacent to the centre measurement electrode. When the catheter is positioned intraluminally at the gastroesophageal junction and secured to this position taping the distal end to the endothracheal tube, it allows to direct dissection towards the cardia.
Хирургические операции
6 лет назад
2774 просмотров
39 лайков
0 комментариев
07:08
POEM endoscopic treatment of achalasia using the EndoFLIP® (Endolumenal Functional Lumen Imaging Probe) imaging system
This is the case of a 75-year-old lady who presented with recurrent symptoms of dysphagia and regurgitation associated with a significant weight loss due to recurrent achalasia. She developed progressive recurrence after a first surgical treatment by an open Heller myotomy and Dor fundoplication back in 1974. This first operation was complicated by an esophageal perforation which required a thoracotomy to be controlled. Several dilatations were attempted with no significant symptoms improvement. One of the most important aspects of POEM is to ensure that the submucosal tunnel adequately extends into the gastric cardia in order to perform a complete and adequate myotomy. To this aim, proper orientation is key but may be difficult even to the experienced eye of the interventional endoscopist familiar with ESD techniques and dissection planes. Six endoscopic cues that assist with this determination have been identified so far. The most useful cue was deemed to be the characteristic appearance of the submucosal space of the cardia of a slightly different color with a somewhat yellowish hue, more capacious than the esophageal submucosal space with more and larger vessels. Identification of the thick, cord-like circular muscle fibers of the lower esophageal sphincter was deemed as the second most useful cue, and noting a bluish coloration of the cardial mucosa from the colored submucosal injection via a retroflexed luminal view was the third most useful cue. Endoscope insertion length within the submucosal tunnel and the palisading mucosal vessels marking the gastroesophageal junction and visible also from inside the submucosal tunnel were deemed helpful but to a lesser degree. Nevertheless, identification of these endoscopic landmarks is not easy nor always reproducible. Creation of the submucosal tunnel is very sensitive to case difficulty and accounts for the large fluctuations in procedure time. Another area of technique variability involves the orientation of the myotomy. In order to improve the recognition of the essential landmarks, we developed a myotomy technique guided by the EndoFLIP® catheter. EndoFLIP® is a unique physiology test that uses both volumetric assessment and pressure readings to calculate compliance and high pressure zones as well as distensibility changes at the gastroesophageal junction. It allows intraoperative assessment of myotomy completion. The use of this device provides a direct immediate feedback with regards to the efficacy of the myotomy. The EndoFLIP® catheter used in this case (EF-325L) has been specifically modified for the POEM procedure. It differs from the standard EndoFLIP® catheter in that it contains an integrated illuminating LED adjacent to the centre measurement electrode. When the catheter is positioned intraluminally at the gastroesophageal junction and secured to this position taping the distal end to the endothracheal tube, it allows to direct dissection towards the cardia.
Laparoscopic Nissen fundoplication for atypical symptoms
Patients with gastro-esophageal reflux sometimes present with conflicting preoperative studies or atypical symptoms. This case had a primary complaint of pain and a normal 24-hour pH study. In this case, there were other indications for surgery - esophagitis and a type I hiatal hernia. Because medications offered no relief, it was elected to proceed with a Nissen fundoplication. A standard 2cm floppy fundoplication and repair of the hiatal hernia was performed in a stepwise fashion: hiatal dissection, esophageal mobilization, gastric fundus mobilization, posterior crural closure, and finally a short 360-degree fundoplication well fixed to the esophagus.
Хирургические операции
7 лет назад
7030 просмотров
106 лайков
0 комментариев
16:36
Laparoscopic Nissen fundoplication for atypical symptoms
Patients with gastro-esophageal reflux sometimes present with conflicting preoperative studies or atypical symptoms. This case had a primary complaint of pain and a normal 24-hour pH study. In this case, there were other indications for surgery - esophagitis and a type I hiatal hernia. Because medications offered no relief, it was elected to proceed with a Nissen fundoplication. A standard 2cm floppy fundoplication and repair of the hiatal hernia was performed in a stepwise fashion: hiatal dissection, esophageal mobilization, gastric fundus mobilization, posterior crural closure, and finally a short 360-degree fundoplication well fixed to the esophagus.
Paraesophageal hernias and controversies
There are several advanced situations in antireflux surgery: these include giant hiatal hernias (PEH), the short esophagus and the use of meshes to minimize recurrences.
PEH is a disease of the diaphragm more than one of the esophagus, recurrence rates at 5 to 10 years are very high (>50%) due to intrinsic defects of the connective tissue of the diaphragm. Keys to surgical repair include: reduction of the mediastinal hernia sac, extensive mobilization of the esophagus to bring the GE junction into the abdomen, reinforced repair of the diaphragm. Gastropexy can occasionally be a useful adjunct. Reinforced repair of the diaphragm can involve pledgets, relaxing incisions, or mesh. Mesh remains a controversial subject. The lowest reherniation rates in the literature are with plastic mesh but such a mesh is associated with esophageal erosions. The existence of the short esophagus is controversial, most agree it exists 3 to 5% of the time. The optimal treatment is extensive mediastinal mobilization and, if that fails, to perform a laparoscopic Collis gastroplasty. There are several techniques for Collis including transthoracic or wedge gastroplasty. All result in good functional results but the ectopic gastric mucosa that results often secretes acid and requires the patient to stay on anti-acid medication.
Лекции
7 лет назад
4741 просмотров
29 лайков
0 комментариев
42:08
Paraesophageal hernias and controversies
There are several advanced situations in antireflux surgery: these include giant hiatal hernias (PEH), the short esophagus and the use of meshes to minimize recurrences.
PEH is a disease of the diaphragm more than one of the esophagus, recurrence rates at 5 to 10 years are very high (>50%) due to intrinsic defects of the connective tissue of the diaphragm. Keys to surgical repair include: reduction of the mediastinal hernia sac, extensive mobilization of the esophagus to bring the GE junction into the abdomen, reinforced repair of the diaphragm. Gastropexy can occasionally be a useful adjunct. Reinforced repair of the diaphragm can involve pledgets, relaxing incisions, or mesh. Mesh remains a controversial subject. The lowest reherniation rates in the literature are with plastic mesh but such a mesh is associated with esophageal erosions. The existence of the short esophagus is controversial, most agree it exists 3 to 5% of the time. The optimal treatment is extensive mediastinal mobilization and, if that fails, to perform a laparoscopic Collis gastroplasty. There are several techniques for Collis including transthoracic or wedge gastroplasty. All result in good functional results but the ectopic gastric mucosa that results often secretes acid and requires the patient to stay on anti-acid medication.