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Portland, OR, United States

Swanstrom L.L.,Oregon Clinic | Rieder E.,Legacy Health System | Dunst C.M.,Oregon Clinic
Journal of the American College of Surgeons | Year: 2011

Background: Peroral endoscopic myotomy (POEM) has recently been described in humans as a treatment for achalasia. This concept has evolved from developments in natural orifice translumenal endoscopic surgery (NOTES) and has the potential to become an important therapeutic option. We describe our approach as well as our initial clinical experience as part of an ongoing study treating achalasia patients with POEM. Study Design: Five patients (mean age 64 ± 11 years) with esophageal motility disorders were enrolled in an IRB-approved study and underwent POEM. This completely endoscopic procedure involved a midesophageal mucosal incision, a submucosal tunnel onto the gastric cardia, and selective division of the circular and sling fibers at the lower esophageal sphincter. The mucosal entry was closed by conventional hemostatic clips. All patients had postoperative esophagograms before discharge and initial clinical follow-up 2 weeks postoperatively. Results: All (5 of 5) patients successfully underwent POEM treatment, and the myotomy had a median length of 7 cm (range 6 to 12 cm). After the procedure, smooth passage of the endoscope through the gastroesophageal junction was observed in all patients. Operative time ranged from 120 to 240 minutes. No leaks were detected in the swallow studies and mean length of stay was 1.2 ± 0.4 days. No clinical complications were observed, and at the initial follow-up, all patients reported dysphagia relief without reflux symptoms. Conclusions: Our initial experience with the POEM procedure demonstrates its operative safety, and early clinical results have shown good results. Although further evaluation and long-term data are mandatory, POEM could become the treatment of choice for symptomatic achalasia. © 2011 American College of Surgeons.


Goers T.A.,Legacy Health System | Cassera M.A.,The Oregon Clinic | Dunst C.M.,The Oregon Clinic | Swanstrom L.L.,The Oregon Clinic
Journal of Gastrointestinal Surgery | Year: 2011

Introduction: Laparoscopic techniques have led to hiatal procedures being performed with less morbidity but higher failure rates. Biologic mesh (biomesh) has been proposed as an alternative to plastic mesh to achieve durable repairs while minimizing stricturing and erosion. This paper documents the lack of significant dysphagia after the placement of biomesh during hiatal hernia repair. Methods: A retrospective chart review of patients who underwent paraesophageal hiatal hernia repairs with and without biomesh was performed. Hernias were diagnosed with esophagogastroscopy and esophageal manometry. Demographic, procedural, and pre- and post-surgery symptom data were recorded. Results: Fifty-six patients underwent biomesh repair while 33 patients underwent non-mesh repairs. The procedure time for mesh repairs was significantly longer (p = 0. 004). Hospital stays, resting lower esophageal sphincter pressure, and mean contraction amplitudes were similar between groups. Residual pressure was measured to be significantly higher in patients who had mesh repairs (p = 0. 0001). Normal esophageal peristalsis was maintained in both groups. At first follow-up, mesh patients complained of more dysphagia and bloating, but non-mesh patients had more heartburn. At second follow-up, non-mesh patients had more symptom complaints than mesh patients. Conclusion: The addition of biomesh for hiatal hernia repair does not result in significantly increased patient dysphagia rates postoperatively compared with patients who underwent primary repair. © 2011 The Society for Surgery of the Alimentary Tract.


Chandran R.,Legacy Health System | Gardiner S.K.,Devers Eye Institute | Simon M.,Northwest Cancer Specialists | Spurgeon S.E.,Oregon Health And Science University
Leukemia and Lymphoma | Year: 2012

A retrospective analysis was done using the Surveillance, Epidemiology, and End-Results (SEER) database to determine the trends in overall survival and identify prognostic factors in patients with mantle cell lymphoma (MCL). In total 5367 cases of MCL identified from 1992 to 2007 were split into three cohorts, group 1(1992-1999), group 2 (2000-2003) and group 3 (2004-2007). Survival was analyzed using the Cox proportional hazards model to correct for age, gender and stage of disease. The proportion of patients with advanced disease at diagnosis, male gender and advanced age increased over time and these were all associated with increased mortality. The overall survival remained unchanged. However, when adjusted for the increased proportion of patients with poor prognostic features noted above, we found a significant improvement in survival. The adjusted model also showed an improvement in predicted survival over time in patients with advanced stage. No change in survival was seen in patients with localized disease. Although this analysis is not designed to evaluate specific treatment modalities, these data suggest that the development of new treatment strategies over the past decade may be impacting the survival of patients with advanced MCL despite the finding that the overall survival remains unchanged in the general US population. © 2012 Informa UK, Ltd.


Myers E.M.,University of North Carolina at Chapel Hill | Siff L.,University of North Carolina at Chapel Hill | Osmundsen B.,Legacy Health System | Geller E.,University of North Carolina at Chapel Hill | Matthews C.A.,University of North Carolina at Chapel Hill
International Urogynecology Journal and Pelvic Floor Dysfunction | Year: 2015

Introduction and hypothesis: Optimal management of the cervix at the time of hysterectomy and sacrocolpopexy for primary uterovaginal prolapse is unknown. Our hypothesis was that recurrent prolapse at 1 year would be more likely after a supracervical robotic hysterectomy (SRH) compared with a total robotic hysterectomy (TRH) at the time of robotic sacrocolpopexy (RSCP) for uterovaginal prolapse. Methods: This was a retrospective cohort analysis of 83 women who underwent hysterectomy with RSCP over a 24-month period (40 with TRH and 43 with SRH). At 1 year post-procedure, subjects completed validated questionnaires regarding pelvic floor symptoms, sexual function, and global satisfaction, and underwent a pelvic examination to identify mesh exposure and evaluate pelvic floor support. Results: Demographics of the two groups were similar, except for a higher mean body mass index in the TRH group (31.9 TRH vs 25.8 SRH kg/m2, p < 0.001). The rate of recurrent prolapse ≥ stage II was higher for women who underwent SRH compared with TRH (41.9 % vs 20.0 %, p = 0.03; OR 2.8, 95 % CI, 1.07–7.7). However, when this was analyzed as recurrence ≥ hymen, there was no difference between groups (12.5 % TRH vs 18.6 % SRH, p = 0.45). Likewise, there was no difference between groups when a composite measure of success was used (30 out of 40 [75 %] TRH vs 29 out of 43 [67.4 %] SRH, p = 0.45). Conclusions: Women who underwent an SRH were 2.8 times more likely to have a recurrent prolapse, ≥ stage II, at 1 year, compared with those who underwent a TRH, but when composite assessment scores were used there was no difference between the groups. © 2014, The International Urogynecological Association.


Epson E.,Oregon Health And Science University | Marshall-Olson A.,Legacy Health System | Winthrop K.L.,Oregon Health And Science University
Diagnostic Microbiology and Infectious Disease | Year: 2012

We classified patients with respiratory nontuberculous mycobacteria (NTM) isolates using updated (2007) and previous (1997) American Thoracic Society/Infectious Diseases Society of America criteria for NTM lung disease. We found that a greater proportion of such patients have disease using updated criteria due to improved sensitivity of the microbiologic component of the disease definition. © 2012 Elsevier Inc.

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