- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT03277144
Incidence of Duodenal Stump Fistula After Gastrectomy for Gastric Cancer. A Randomized Controlled Trial (DRTST)
Does the Technique of Duodenal Resection Affect the Incidence of Duodenal Stump Fistula After Gastrectomy for Gastric Cancer ? A Randomized Controlled Trial (DRTST: Duodenal Resection Tri-staple Technology)
The goal of this trial is to demonstrate that the use of Tri-Staple Technology for duodenal resection during open gastrectomy for cancer is safer than the use of other conventional methods of resection/closure of the duodenum and that the incidence of duodenal fistula can be decreased to that observed after the use of this technology in Laparoscopic and robotic gastrectomy, therefore almost three times lower than that currently reported in literature.
Participating centres must have an annual volume of at least 20 gastrectomies per year.
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
BACKGROUND Gastric cancer is still one of the most frequent malignancies in Europe. In United States the estimated new cases in 2010 were 21000 (12730 male and 8270 female) with 10570 estimated deaths (6350 male and 4220 female)[7,8]. In Italy the estimated new cases in 2013 were 13200 (7900 males and 5300 female) (AIOM-AIRTUM, I numeri del cancro in Italia - 2013, www.registri-tumori.it) .The incidence rates in 2005-2009 were 21.6 and 10.8 per 100,000 in males and females respectively. The mortality rates in 2005-2009 were 14.9 and 7.3 per 100,000 in males and females respectively. (www.itacan.ispo.toscana.it).A total or subtotal gastrectomy with D2 lymph node dissection and R0 margins remains the standard of care for gastric cancer[9,10]. Despite this, in low-volume centers gastrectomy still remains a challenging procedure with a notable morbidity rate (33%-43%) and mortality rate (7%-12%)[11,12]. Duodenal stump fistula (DSF) represents an infrequent but severe complication after total or subtotal gastrectomy for gastric cancer, with incidence of 2,5 - 5% and mortality rate ranging from 7% to 67%(1-5). Several factors were identified as possible cause of DSF, such as local hematoma, inflammation, intra-operative inadequate closure of the duodenal stump, incorrect drain position, devascularization, post-operative distension of the duodenum and R1-R2 resections[2,13].
There are many DSF-related complications leading to longer hospitalization times, such as intra-abdominal abscesses, wound infections, diffuse peritonitis, sepsis, malnutrition, pancreatitis, abdominal bleeding, and pneumonia. (3) DSF is often difficult to treat because of the highly enzyme-rich duodenal juice and deep location of the fistula. In a retrospective multicenter study (2) 3,685 patients undergoing gastrectomy for malignancies who developed 68 DSFs were analyzed; it was reported that DSF features had changed in the last 30 years and that DSF alone no longer leads to death; some complications observed in the past, such as fluid and electrolyte loss and dermatitis, have disappeared owing to improvements( in particular parenteral nutrition and wound care). However, additional new complications such as bleeding and fistulas of neighboring organs were emerging. Although medical therapy is associated with better outcomes, surgery is still mandatory in cases of severe abdominal sepsis or bleeding not otherwise manageable.
However, reoperation is often ineffective owing to postoperative edema and inflammation, and the prognosis of patients undergoing surgery for DSF remains very poor. To improve the outcome of these patients, many surgical procedures have been proposed from washing the peritoneal cavity and abdominal drainage to tube duodenostomy (14,15), closure of the fistula, fistula repair with a rectus abdominis flap (16), fistula closure by Roux-en-Y duodenojejunostomy(17,18), biliogastric diversion, laparostomy, and pancreatoduodenectomy (19) but surgeons are often unsure about the best management and the result are often unsuccessful.
In a recent Korean national RCT (6) on open (ODG) vs laparoscopic distal gastrectomy (LADG), the incidence of duodenal stump leakage after laparoscopyc gastrectomy was about 1%; in this population study the use of tri-staple technology for duodenal resection was mandatory. In our clinical practice, the incidence of DSF after open gastrectomy is about 3-5% adopting different techniques of duodenal stump resection/closure.
The aim of this study is to evaluate if duodenal stump resection/closure using tri-staple technology can significantly decrease the incidence of DSF after open gastrectomy as compared to the other conventional methods adopted in the clinical practice (1% vs 5%).
We have designed a national multicentre pragmatic (20) RCT to compare the use of endoGIA or Echelon (triStaple technology) to other conventional methods (GIA with or without manual reinforcement , manual suture, purse string) for duodenal resection/closure during open gastrectomy, with the assumption that Tri-staple technology without reinforcement ( as routinely used in LADG) is the safest method.
AIM OF THE STUDY The goal of this trial is to demonstrate that the use of Tri-Staple Technology for duodenal resection during open gastrectomy for cancer is safer than the use of other conventional methods of resection/closure of the duodenum and that the incidence of duodenal fistula can be decreased to that observed after the use of this technology in Laparoscopic and robotic gastrectomy, therefore almost three times lower than that currently reported in literature.
Participating centres must have an annual volume of at least 20 gastrectomies per year.
Design of the study This is a multicentre randomized controlled trial.
Patients with malignant tumor of the stomach, as primary diagnosis, requiring distal or total gastrectomy without anastomosis with the duodenum will undergo clinical preoperative workout and anaesthesiologist evaluation. All patients who meet the inclusion/exclusion criteria and agree to sign the informed consent are registered into the trial and randomized to one of the two arms (a. Duodenal Stump Closure with TriStaple Technology - TST or b. Duodenal Stump closure with other conventional techniques - OCT ) as described in the chapter Randomization. In TST arm no manual reinforce of the mechanical suture should be perfomed; in OCT group, a manual reinforce of the suture can be done according to the preference of the operator, and recorded in the trial data base (DB).
Patients' postoperative course will be carefully monitored and all variables detailed below will be recorded in the DB.
DSF will be diagnosed by the presence of duodenal fluid in the surgical drainage and confirmed by a CT scan when needed (presence of intra-abdominal peri-duodenal collection of fluid and/or micro air bubbles).
Also the type of treatment (conservative, percutaneous drainage, reoperation, others ) of DSF should be recorded, as well as the length of hospital stay and other postoperative complications or in-hospital death ( as well as 30- and 90- days mortality)
Trial setting
This is an Italian national multicentre RCT; the Division of General Surgery from University of Turin, Department of Surgical Sciences, AOU San Luigi Gonzaga di Orbassano, will be the Coordinating Centre of the trial. The P.I. of the trial is Prof Maurizio Degiuli.
S.S.D. Epidemiologia, Clinica e Valutativa, AOU Città della Salute e della Scienza di Torino, will be responsible for this trial's central randomisation and statistical analysis.
Clinical monitoring and data managing will be performed by the P.I. and and co-investigators.
Study population
inclusion criteria
pathologically proven malign tumor of the stomach age of 18 to 80 years, no history of other cancers no history of radiotherapy in supra-mesocolic space total or distal gastrectomy without anastomosis with the duodenum
exclusion criteria
emergency surgery American Society of Anesthesiologists class > 3 need for combined resection of other organs laparoscopic/robotic access severe heart disease liver cirrhosis T stage >cT4a citology positive at preoperative laparoscopy cM+ cD+
All patients freely give informed consent to participate in the study prior to surgery, at the time of discussing the intervention with the surgeon or the nurse and can decide to withdraw from the study at any time.
Diagnosis of DSF
A diagnosis of DF is made on the basis of the presence of duodenal juice in the surgical drainage or its leakage through the abdominal wall, and confirmed by CT scan and/or fistulography.
Variables
sex age ASA score COPD type 2 DM multiple comorbidities pre-operative albumin serum levels pre-operative lymphocytes blood count cT Stage / pTStage pTNM distal margin involvement intraoperative blood loss lenght of hospital stay Type of gastrectomy TG vs DG type of reconstruction: ( BII vs RY) lymph node dissection: D1, D1+, D2, > D2
Type of duodenal stump closure device:
A. endoGIA tristaple B. other techniques (GIA/TA with or without manual reinforcement (simple interrupted suture or running suture), manual suture (simple interrupted or running suture), purse string)
Development of DSF (po day) healing of DSF (po day) Diagnosis of DSF Daily output of DSF Type of treatment of DSF Other postoperative morbidity according to Dindo. Postoperative mortality
Randomisation
All patients who meet the inclusion/exclusion criteria and give the informed consent to participate are registered into the central trial database and centrally randomized to one of the two groups (a. Duodenal Stump Closure with TriStaple Technology - TST or b. Duodenal Stump closure with other conventional techniques - OCT ).
Patients refusing recruitment are treated with usual care and contribute to the database a limited set of pre-defined information.
Result of randomisation is communicated to the surgical team at the time of their entrance in the surgical theatre.
Sample size calculation and statistical analysis
Assuming an alpha error at the 5% level and power 80%, a total of 700 patients (350 per arm) are required in order to recognise a true difference of 5% in (a) vs 1% in (b).
Assuming an average case volume of 20 patients per year and 60% acceptance rate, about 30 Centres recruiting for two years will need to be involved.
Cox regression with multivariable analysis will be performed
Data property
Results will be the property of Università degli studi di Torino and of the researchers involved in the conduction of the mulicentre project. A scientific committee will be constituted comprising a lead investigator from each of the Centres.
Study Type
Enrollment (Anticipated)
Phase
- Not Applicable
Contacts and Locations
Study Contact
- Name: Rossella Reddavid, MD
- Phone Number: +393479848651
- Email: rossella.reddavid@gmail.com
Study Contact Backup
- Name: Andrea Evangelista
- Phone Number: +390116336855
- Email: andre.evangelist@cpo.it
Study Locations
-
-
Turin
-
Orbassano, Turin, Italy
- Recruiting
- San Luigi University Hospital
-
Contact:
- Maurizio Degiuli, Professor
- Phone Number: +390119026525
- Email: maurizio.degiuli@unito.it
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- pathologically proven malign tumor of the stomach
- age of 18 to 80 years,
- no history of other cancers
- no history of radiotherapy in supra-mesocolic space
- total or distal gastrectomy without anastomosis with the duodenum
Exclusion Criteria:
- emergency surgery
- American Society of Anesthesiologists class > 3
- need for combined resection of other organs
- laparoscopic/robotic access
- severe heart disease
- liver cirrhosis
- T stage >cT4a
- citology positive at preoperative laparoscopy
- cM+ (clinical suspicion of distant metastasis)
- cD+ (clinical suspicion of duodenal involvment)
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Prevention
- Allocation: Randomized
- Interventional Model: Parallel Assignment
- Masking: None (Open Label)
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: TST-TriStaple(3lines stapler)Technology
During gastrectomy for gatric cancer without anastomosis with the duodenum, Duodenal Stump is closed with a TriStaple (three-lines linear stapler) Technology device.
|
Duodenal stump closed using a Tristaple ( three-lines linear stapler) device
|
Active Comparator: OCT (other conventional techniques)
During gastrectomy for gatric cancer without anastomosis with the duodenum, Duodenal Stump is closed with conventional techniques including manual sutures and devices with only two lines of staples.
|
Duodenal stump closed using other conventional techniques entailing manual suture or mechanical devices with only two lines of sutures.
Other Names:
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
incidence of duodenal stump leak
Time Frame: within 30/60 days from operation
|
The aim of this study is to evaluate if duodenal stump closure using tri-staple technology can significantly decrease the incidence of duodenal stump leakage to 1% as compared to other conventional methods (5%). So the primary endpoint is : - incidence of DSF, diagnosed on the basis of the presence of duodenal juice in the surgical drainage or its leakage through the abdominal wall, and confirmed by CT scan and/or fistulography. |
within 30/60 days from operation
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
cost of surgery
Time Frame: within 90 days from operation
|
cost of devices, hospital stay, drugs, examinations
|
within 90 days from operation
|
operative time for duodenal stump closure
Time Frame: intraopeartively
|
time ( min) necessary for duodenal stump closure
|
intraopeartively
|
short-term postoperative complications
Time Frame: within 30 days from operation
|
onset of postoperative complications according to Clavien-Dindo classification
|
within 30 days from operation
|
blood loss
Time Frame: intraopeartively
|
intraoperative blood loss (ml)
|
intraopeartively
|
lenght of hospitalization
Time Frame: 120 days after operation
|
duration (days) of hospital stay after operation
|
120 days after operation
|
Operative mortality
Time Frame: 30 and 60 days after operation
|
post-operative death
|
30 and 60 days after operation
|
Frequency of DSF by surgical volume
Time Frame: one year
|
rate of duodenal stump leak of every participating center
|
one year
|
Collaborators and Investigators
Sponsor
Investigators
- Principal Investigator: Maurizio Degiuli, MD Prof, University of Turin, San Luigi University Hospital
Publications and helpful links
General Publications
- Zwarenstein M, Treweek S, Gagnier JJ, Altman DG, Tunis S, Haynes B, Oxman AD, Moher D; CONSORT group; Pragmatic Trials in Healthcare (Practihc) group. Improving the reporting of pragmatic trials: an extension of the CONSORT statement. BMJ. 2008 Nov 11;337:a2390. doi: 10.1136/bmj.a2390.
- Inghelmann R, Grande E, Francisci S, Verdecchia A, Micheli A, Baili P, Capocaccia R, De Angelis R. Regional estimates of stomach cancer burden in Italy. Tumori. 2007 Jul-Aug;93(4):367-73. doi: 10.1177/030089160709300407.
- Aurello P, Bellagamba R, Rossi Del Monte S, D'Angelo F, Nigri G, Cicchini C, Ravaioli M, Ramacciato G. Apoptosis and microvessel density in gastric cancer: correlation with tumor stage and prognosis. Am Surg. 2009 Dec;75(12):1183-8.
- Aurello P, Magistri P, Nigri G, Petrucciani N, Novi L, Antolino L, D'Angelo F, Ramacciato G. Surgical management of microscopic positive resection margin after gastrectomy for gastric cancer: a systematic review of gastric R1 management. Anticancer Res. 2014 Nov;34(11):6283-8.
- Martin RC 2nd, Jaques DP, Brennan MF, Karpeh M. Achieving RO resection for locally advanced gastric cancer: is it worth the risk of multiorgan resection? J Am Coll Surg. 2002 May;194(5):568-77. doi: 10.1016/s1072-7515(02)01116-x.
- Orsenigo E, Bissolati M, Socci C, Chiari D, Muffatti F, Nifosi J, Staudacher C. Duodenal stump fistula after gastric surgery for malignancies: a retrospective analysis of risk factors in a single centre experience. Gastric Cancer. 2014 Oct;17(4):733-44. doi: 10.1007/s10120-013-0327-x. Epub 2014 Jan 8.
- Cozzaglio L, Coladonato M, Biffi R, Coniglio A, Corso V, Dionigi P, Gianotti L, Mazzaferro V, Morgagni P, Rosa F, Rosati R, Roviello F, Doci R. Duodenal fistula after elective gastrectomy for malignant disease : an italian retrospective multicenter study. J Gastrointest Surg. 2010 May;14(5):805-11. doi: 10.1007/s11605-010-1166-2. Epub 2010 Feb 9.
- Rossi JA, Sollenberger LL, Rege RV, Glenn J, Joehl RJ. External duodenal fistula. Causes, complications, and treatment. Arch Surg. 1986 Aug;121(8):908-12. doi: 10.1001/archsurg.1986.01400080050009.
- EDMUNDS LH Jr, WILLIAMS GM, WELCH CE. External fistulas arising from the gastro-intestinal tract. Ann Surg. 1960 Sep;152(3):445-71. doi: 10.1097/00000658-196009000-00009. No abstract available.
- Tarazi R, Coutsoftides T, Steiger E, Fazio VW. Gastric and duodenal cutaneous fistulas. World J Surg. 1983 Jul;7(4):463-73. doi: 10.1007/BF01655935. No abstract available.
- Kim W, Kim HH, Han SU, Kim MC, Hyung WJ, Ryu SW, Cho GS, Kim CY, Yang HK, Park DJ, Song KY, Lee SI, Ryu SY, Lee JH, Lee HJ; Korean Laparo-endoscopic Gastrointestinal Surgery Study (KLASS) Group. Decreased Morbidity of Laparoscopic Distal Gastrectomy Compared With Open Distal Gastrectomy for Stage I Gastric Cancer: Short-term Outcomes From a Multicenter Randomized Controlled Trial (KLASS-01). Ann Surg. 2016 Jan;263(1):28-35. doi: 10.1097/SLA.0000000000001346.
- Pedrazzani C, Marrelli D, Rampone B, De Stefano A, Corso G, Fotia G, Pinto E, Roviello F. Postoperative complications and functional results after subtotal gastrectomy with Billroth II reconstruction for primary gastric cancer. Dig Dis Sci. 2007 Aug;52(8):1757-63. doi: 10.1007/s10620-006-9655-6. Epub 2007 Apr 3.
- McCulloch P, Ward J, Tekkis PP; ASCOT group of surgeons; British Oesophago-Gastric Cancer Group. Mortality and morbidity in gastro-oesophageal cancer surgery: initial results of ASCOT multicentre prospective cohort study. BMJ. 2003 Nov 22;327(7425):1192-7. doi: 10.1136/bmj.327.7425.1192.
- Cozzaglio L, Cimino M, Mauri G, Ardito A, Pedicini V, Poretti D, Brambilla G, Sacchi M, Melis A, Doci R. Percutaneous transhepatic biliary drainage and occlusion balloon in the management of duodenal stump fistula. J Gastrointest Surg. 2011 Nov;15(11):1977-81. doi: 10.1007/s11605-011-1668-6. Epub 2011 Sep 13.
- Levy E, Cugnenc PH, Frileux P, Hannoun L, Parc R, Huguet C, Loygue J. Postoperative peritonitis due to gastric and duodenal fistulas. Operative management by continuous intraluminal infusion and aspiration: report of 23 cases. Br J Surg. 1984 Jul;71(7):543-6. doi: 10.1002/bjs.1800710725.
- Isik B, Yilmaz S, Kirimlioglu V, Sogutlu G, Yilmaz M, Katz D. A life-saving but inadequately discussed procedure: tube duodenostomy. Known and unknown aspects. World J Surg. 2007 Aug;31(8):1616-24; discussion 1625-6. doi: 10.1007/s00268-007-9114-3.
- Chander J, Lal P, Ramteke VK. Rectus abdominis muscle flap for high-output duodenal fistula: novel technique. World J Surg. 2004 Feb;28(2):179-82. doi: 10.1007/s00268-003-7017-5. Epub 2004 Jan 20.
- Ujiki GT, Shields TW. Roux-en-Y operation in the management of postoperative fistula. Arch Surg. 1981 May;116(5):614-7. doi: 10.1001/archsurg.1981.01380170094017.
- Milias K, Deligiannidis N, Papavramidis TS, Ioannidis K, Xiros N, Papavramidis S. Biliogastric diversion for the management of high-output duodenal fistula: report of two cases and literature review. J Gastrointest Surg. 2009 Feb;13(2):299-303. doi: 10.1007/s11605-008-0677-6. Epub 2008 Sep 30.
- Musicant ME, Thompson JC. The emergency management of lateral duodenal fistula by pancreaticoduodenectomy. Surg Gynecol Obstet. 1969 Jan;128(1):108-14. No abstract available.
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Anticipated)
Study Completion (Anticipated)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Actual)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
Other Study ID Numbers
- DRTST.01
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
product manufactured in and exported from the U.S.
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
Clinical Trials on Gastric Cancer
-
City of Hope Medical CenterRecruitingGastric Cancer | Gastric Adenocarcinoma | Gastric Cancer Stage IV | Gastric Neoplasm | Gastric Cancer Metastatic to Lung | Gastric Cancer Stage | Gastric Cancer Metastatic to Liver | Gastric Cancer Stage III | Gastric Cancer Stage II | Gastric Lesion | Gastric Cancer in Situ | Gastric Cancer Stage IIIB | Gastric... and other conditionsUnited States, Japan
-
City of Hope Medical CenterNational Cancer Institute (NCI)Active, not recruitingGastric Adenocarcinoma | Clinical Stage III Gastric Cancer AJCC v8 | Clinical Stage 0 Gastric Cancer AJCC v8 | Clinical Stage I Gastric Cancer AJCC v8 | Clinical Stage II Gastric Cancer AJCC v8 | Clinical Stage IIA Gastric Cancer AJCC v8 | Clinical Stage IIB Gastric Cancer AJCC v8 | Pathologic Stage... and other conditionsUnited States
-
City of Hope Medical CenterActive, not recruitingAdenocarcinoma of the Gastroesophageal Junction | Stage IV Gastric Cancer | Recurrent Gastric Cancer | Diffuse Adenocarcinoma of the Stomach | Intestinal Adenocarcinoma of the Stomach | Mixed Adenocarcinoma of the Stomach | Stage IIIA Gastric Cancer | Stage IIIB Gastric Cancer | Stage IIIC Gastric Cancer and other conditionsUnited States
-
M.D. Anderson Cancer CenterNational Cancer Institute (NCI)Active, not recruitingGastric Adenocarcinoma | Clinical Stage III Gastric Cancer AJCC v8 | Clinical Stage I Gastric Cancer AJCC v8 | Clinical Stage IIA Gastric Cancer AJCC v8 | Clinical Stage IVA Gastric Cancer AJCC v8 | Pathologic Stage IB Gastric Cancer AJCC v8 | Pathologic Stage II Gastric Cancer AJCC v8 | Pathologic... and other conditionsUnited States
-
National Cancer Institute (NCI)CompletedGastric Adenocarcinoma | Stage IV Gastric Cancer | Stage II Gastric Cancer | Stage III Gastric CancerUnited States
-
Mayo ClinicNational Cancer Institute (NCI)Active, not recruitingGastroesophageal Junction Adenocarcinoma | Gastric Cardia Adenocarcinoma | Stage IB Gastric Cancer AJCC v7 | Stage II Gastric Cancer AJCC v7 | Stage IIA Gastric Cancer AJCC v7 | Stage IIB Gastric Cancer AJCC v7 | Stage IIIA Gastric Cancer AJCC v7 | Stage IIIB Gastric Cancer AJCC v7United States
-
National Cancer Institute (NCI)CompletedAdenocarcinoma of the Gastroesophageal Junction | Stage IV Gastric Cancer | Recurrent Gastric Cancer | Adenocarcinoma of the Stomach | Stage IIIA Gastric Cancer | Stage IIIB Gastric Cancer | Stage IIIC Gastric CancerUnited States
-
National Cancer Institute (NCI)CompletedGastric Cancer | Gastric NeoplasmsUnited States
-
AIO-Studien-gGmbHBristol-Myers SquibbCompletedGastric Cancer | Esophageal Cancer | Adenocarcinoma Gastric | Metastatic Gastric Cancer | GastroEsophageal Cancer | HER2 Positive Gastric CancerGermany
-
Rutgers, The State University of New JerseyNational Cancer Institute (NCI)RecruitingGastric Adenocarcinoma | Epstein-Barr Virus Positive | Mismatch Repair Protein Deficiency | Stage IB Gastric Cancer AJCC v7 | Stage II Gastric Cancer AJCC v7 | Stage IIA Gastric Cancer AJCC v7 | Stage IIB Gastric Cancer AJCC v7 | Stage III Gastric Cancer AJCC v7 | Stage IIIA Gastric Cancer AJCC v7 | Stage... and other conditionsUnited States
Clinical Trials on TST-TriStaple(3lines stapler)Technology
-
Medtronic - MITGCompletedCoronary Artery Disease | Hypertension | Diabetes | Osteoarthritis | Sleep Apnea | Gastroesophageal Reflux Disease | HyperlipidemiaUnited States
-
Medtronic - MITGDuke University; University Hospitals Cleveland Medical CenterTerminated
-
Medtronic - MITGUniversity of South Florida; Duke University; Providence Medical Research CenterTerminatedRectal Cancer | Low Anterior Resection | Proctosigmoid ResectionUnited States
-
Medtronic - MITGCompletedLung CancerUnited States