***TASK*** the task is to summarize an input biomedical literature in six sentences 
    ***INPUT*** the input is a biomedical literature 
    ***OUTPUT*** the output is the summary of an input biomedical literature in six sentences 
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    Input: HYPOTHESIS Laparoscopic anterior 90 degrees partial fundoplication for gastroesophageal reflux is associated with a lower incidence of postoperative dysphagia and other adverse effects compared with laparoscopic Nissen fundoplication . DESIGN A multicenter , prospect i ve , double-blind , r and omized controlled trial . SETTING Nine university teaching hospitals in 6 major cities in Australia and New Zeal and . PARTICIPANTS One hundred twelve patients with proven gastroesophageal reflux disease presenting for laparoscopic fundoplication were r and omized to undergo either a Nissen ( 52 patients ) or an anterior 90 degrees partial procedure ( 60 patients ) . Patients with esophageal motility disorders , patients requiring a concurrent abdominal procedure , and patients who had undergone previous antireflux surgery were excluded from this study . INTERVENTIONS Laparoscopic Nissen fundoplication with division of the short gastric vessels or laparoscopic anterior 90 degrees partial fundoplication . MAIN OUTCOME MEASURES Independent assessment of dysphagia , heartburn , and overall satisfaction 1 , 3 , and 6 months after surgery using multiple clinical grading systems . Objective measurement of esophageal manometric parameters , esophageal acid exposure , and endoscopic assessment . RESULTS Postoperative dysphagia , and wind-related adverse effects were less common after a laparoscopic anterior 90 degrees partial fundoplication . Relief of heartburn was better following laparoscopic Nissen fundoplication . Overall satisfaction was better after anterior 90 degrees partial fundoplication . Lower esophageal sphincter pressure , acid exposure , and endoscopy findings were similar for both procedures . CONCLUSIONS At the 6-month follow-up , laparoscopic anterior 90 degrees culine partial fundoplication is followed by fewer adverse effects than laparoscopic Nissen fundoplication with full fundal mobilization , and it achieves a higher rate of satisfaction with the overall outcome . However , this is offset to some extent by a greater likelihood of recurrent gastroesophageal reflux symptoms BACKGROUND Total fundoplication for gastro-oesophageal reflux disease may be followed by unwanted side-effects . A r and omized trial demonstrated that an anterior 180 degrees partial fundoplication achieved effective reflux control and was associated with fewer side-effects in the short term than total fundoplication . This paper reports longer-term ( 5 year ) outcomes from that trial . METHODS Between December 1995 and June 1997 , 107 patients were r and omized to undergo either laparoscopic total fundoplication or a laparoscopic anterior 180 degrees fundoplication .  After 5 years , 101 of 103 eligible patients ( 51 total , 50 anterior ) were available for follow-up . Each patient was interviewed by a single blinded investigator and a st and ardized question naire was completed . The question naire focused on symptoms and overall satisfaction with the results of fundoplication . RESULTS There were no significant differences between the two groups with regard to control of heartburn or patient satisfaction with the overall outcome . Dysphagia , measured by a visual analogue score for solid food and a composite dysphagia score , was worse at 5 years after total fundoplication . Symptoms of bloating , inability to belch and flatulence were also more common after total fundoplication . Reoperation was required for dysphagia in three patients after total fundoplication and for recurrent reflux in three patients after anterior fundoplication . CONCLUSION Anterior 180 degrees partial fundoplication was as effective as total fundoplication for managing the symptoms of gastro-oesophageal reflux in the longer term . It was associated with a lower incidence of side-effects , although this was offset by a slightly higher risk of recurrent reflux symptoms Objective : To compare 10 years outcome of a multicenter r and omized controlled trial on  laparoscopic ( LNF ) and conventional Nissen fundoplication ( CNF )  , with focus on effectiveness and reoperation rate . Summary of Background Data : LNF has replaced CNF as surgical treatment for  gastroesophageal reflux disease ( GERD ) . Decisions are based on equal short-term effectiveness and reduced morbidity , but confirmation by long-term level 1 evidence is lacking . Methods : From 1997 to 1999 , 177 proton pump inhibitor (PPI)-refractory GERD patients were r and omized to undergo LNF or  CNF . The 10 years results of surgery on reflux symptoms , general health , PPI use , and reoperation rates , are described . High-resolution manometry , 24-hour pH-impedance monitoring and barium swallow were performed in symptomatic patients only . Results : A total of 148 patients ( 79 LNF , 69 CNF ) participated in this 10-year follow-up study . GERD symptoms were relieved in 92.4 % and 90.7 % ( NS ) after LNF and CNF , respectively . Severity of heartburn and dysphagia were similar , but slightly more patients had relief of regurgitation after LNF ( 98.7 % vs. 91.0 % ; P = 0.030 ) . The percentage of patients using PPIs slowly increased with time in both groups to 26.6 % for LNF and 22.4 % for CNF ( NS ) . General health ( 74.7 % vs. 72.7 % ; NS ) and quality of life ( visual analogue scale score : 65.3 vs. 61.4 ; NS ) improved similarly in both groups . The percentage of patients who would have opted for surgery again was similar as well ( 78.5 % vs. 72.7 % ; NS ) . Twice as many patients underwent reoperation after CNF compared with LNF ( 12 [ 15.2 % ] vs. 24 [ 34.8 % ] ; P = 0.006 ) , including a higher number of incisional hernia corrections ( 2 vs. 9 ; P = 0.015 ) . Mean interval between operation and reintervention was longer after CNF ( 22.9 vs. 50.6 months ; P = 0.047 ) . Of the patients who were dependent on daily PPI therapy at 10 years ( LNF 10 , CNF 10 ) , 7 patients ( LNF 3 , CNF 4 ) had recurrent GERD on pH-impedance monitoring , 5 of them with some form of anatomic recurrence . A total of 13 of 20 ( 65.0 % ) patients did not have recurrent GERD . Fourteen patients had an abnormal high-resolution manometry . Conclusions : CNF carries a higher risk for surgical reintervention compared with LNF , mainly due to incisional hernia corrections . The 10-year effectiveness of LNF and CNF is comparable in terms of improvement of GERD symptoms , PPI use , quality of life , and objective reflux control . Consequently , the long-term results from this trial lend level 1 support to the use of LNF as the surgical procedure of choice for GERD BACKGROUND The effect of total ( Nissen ) and anterior partial fundoplication ( APF ) for the surgical treatment of gastroesophageal reflux disease ( GERD ) on the motor behavior of the esophagogastric axis has not been fully assessed . The purpose of this study was to assess any alterations in lower esophageal sphincter ( LES ) and gastric fundus motor parameters in GERD patients after Nissen or APF fundoplication .  METHODS Twenty four patients with documented GERD underwent either laparoscopic Nissen fundoplication ( n = 12 ) or laparoscopic APF ( n = 12 ) . Preoperative and postoperative stationary esophageal manometry included assessment of LES resting and postdeglutition relaxation pressures , intragastric pressure , and LES transient relaxations in the left lateral and upright positions and after gastric distension . RESULTS Both types of fundoplication result ed in significant increases in LES resting ( P < 0.001 ) and postdeglutition relaxation pressure ( P < 0.001 ) in both positions and after gastric distention . Intragastric pressure increased only after Nissen fundoplication in the postgastric distention state ( P = 0.01 ) . Transient LES relaxations were equally abolished after both procedures . All postoperative changes were to a similar level after either procedure with the exception of intragastric pressure after gastric distention , which was significantly higher after total than after partial fundoplication ( P = 0.04 ) . CONCLUSIONS Both procedures equally increase LES resting and postdeglutition relaxation pressures and abolish transient LES relaxations at all states . The significantly higher intragastric pressure at the postgastric distention state after Nissen fundoplication could possibly explain the higher incidence of epigastric fullness and discomfort after this type of antireflux surgery In the operative management of gastro‐oesophageal reflux , a balance must be achieved between adequate control of reflux and excessive dysphagia . The ideal technique is not known . A r and omized study was performed to determine whether laparoscopic anterior fundoplication is associated with a lower incidence of postoperative dysphagia than laparoscopic Nissen fundoplication , while achieving equivalent control of reflux BACKGROUND AND AIMS The purpose of this study was to determine whether esophageal dysmotility affects symptoms of gastroesophageal reflux disease or clinical outcome after  laparoscopic fundoplication  and whether esophagus motor function changes postoperatively . METHODS Two hundred patients with a history of long-st and ing gastroesophageal reflux disease were investigated by clinical assessment , upper gastrointestinal endoscopy , esophageal manometry , and 24-hour pH monitoring  between May 1999 and May 2000 . Patients were stratified according to presence or absence of esophageal dysmotility ( each n = 100 ) and r and omized to either 360 degrees ( Nissen ) or 270 degrees ( Toupet ) fundoplication .  At a 4-month postoperative follow-up , preoperative tests were repeated . RESULTS Preoperative esophageal dysmotility was associated with more severe reflux symptoms , more frequent resistance to medical treatment ( 64 % vs. 49 % ; P < 0.05 ) , and greater decrease in lower esophageal sphincter pressure ( 9.5 + /- 5.3 vs. 12.4 + /- 6.7 mm Hg ; P < 0.0005 ) compared with normal motility . Postoperatively , clinical outcome and reflux recurrence ( 21 % vs. 14 % ) were similar . Esophageal motility remained unchanged in 85 % of patients and changed from pathologic to normal in 20 ( 10 Nissen/10 Toupet ) and vice versa in 9 ( 8 Nissen/1 Toupet ) patients . CONCLUSIONS Esophageal dysmotility ( 1 ) reflects more severe disease ; ( 2 ) does not affect postoperative clinical outcome ; ( 3 ) is not corrected by fundoplication , independent of the surgical procedure performed ; ( 4 ) may occur as a result of fundoplication ; and ( 5 ) requires no tailoring of surgical management Objective The aim of the study was to compare the efficacy and mechanical consequences of  2 partial fundoplications  performed laparoscopically under the framework of a r and omized , controlled clinical trial . Summary Background Data Although laparoscopic total fundoplication procedures have proven their effectiveness in the control of gastroesophageal reflux , problems remain with the functional consequences after a supra-competent gastric cardia high-pressure zone . Partial fundoplications have been found to be associated with fewer mechanical side effects . Patients and Methods During a 2-year period , 95 patients with gastroesophageal reflux disease were enrolled into a r and omized , controlled single-institution clinical trial comparing a partial posterior ( Toupét , n = 48 ) fundoplication and an anterior partial wrap ( Watson , n = 47 ) . All patients were assessed postoperatively at predefined time points , and the 12-month follow-up data are presented in terms of clinical results and 24-hour pH monitoring variables . Results Both patient groups were strictly comparable at the time of r and omization . All operations were completed laparoscopically , and no serious complications were encountered . During the first postoperative year , a difference regarding the control of reflux symptoms was observed in favor of the posterior fundoplication . Esophageal acid exposure ( % time pH < 4 ) was substantially reduced by both operations but to a significantly lower level after a Toupét compared with the Watson partial fundoplication ( 1.0 ± 0.3 vs. 5.6 ± 1.1 mean ± SEM ; p < 0.001 ) . Postfundoplication symptoms were infrequently recorded with no difference between the groups . Conclusions When performing a laparoscopic partial fundoplication , the posterior modification ( Toupét ) offers advantages in terms of better reflux control compared with an anterior type ( Watson ) This double‐blind , r and omized study compared outcomes of  laparoscopic Nissen total fundoplication and anterior partial fundoplication  carried out by a single surgeon in a private practice Objective : To compare longer term ( 5-year ) outcomes for reflux control and postsurgery side effects after laparoscopic anterior ( 90 ° and 180 ° ) partial versus Nissen fundoplication for gastroesophageal reflux . Background : Laparoscopic Nissen fundoplication is the most frequently performed surgical procedure for gastroesophageal reflux . It achieves excellent control of reflux , but in some patients it is followed by 
    Output:
    
At 1 and 5 years , dysphagia and gas-related symptoms are lower after 180-degree LAF than after LNF , and esophageal acid exposure and esophagitis are similar , with no differences in heartburn scores , patient satisfaction , dilatations , and reoperation rate .