Nissen fundoplication improves gastric myoelectrical activity characteristics and symptoms in gastroesophageal reflux patients: evaluation in transcutaneous electrogastrography

Gastric dysrhythmia in gastroesophageal reflux disease: a systematic review and meta-analysis

BACKGROUND

Gastroesophageal reflux disease (GERD) is a commonly diagnosed gastrointestinal disorder, with a substantial impact on the quality of life. The underlying pathophysiology of GERD is multifactorial and incompletely understood. Abnormal gastric electrical activity, measured using electrogastrography (EGG), may contribute. This study aimed to systematically review and meta-analyse the existing literature in which EGG was used in patients with GERD.

METHODS

Databases were systematically searched for studies using EGG in adults with GERD. The primary outcome was the percentage of recording time in the normogastric frequency range. Secondary outcomes were dominant frequency, dominant power, power ratio and prevalence of any EGG abnormality.

RESULTS

In total, 591 participants (427 patients with GERD; 164 healthy controls) from 13 studies were included. GERD patients spent 17.3% (SMD - 1.18, 95%CI: - 1.84, - 0.52) and 18.7% (SMD - 1.11, 95%CI: - 1.55, - 0.68) less of the preprandial and postprandial recording time in normogastric frequency ranges, respectively, compared to healthy controls. The dominant frequency, dominant power and power ratio were not significantly different to healthy controls in the preprandial and postprandial periods. The pooled prevalence of any EGG abnormality was significantly greater in patients with GERD than in healthy controls [46% (95%CI: 39-64%) vs. 10% (95%CI: 4-23%); p < 0.0001]. Correlations between GERD symptoms and EGG recordings were inconsistently studied. EGG techniques were heterogeneous.

CONCLUSIONS

Consistent abnormalities in gastric slow-wave activity, as measured by EGG, were identified in adults with GERD. Further investigation into these abnormalities using novel emerging electrophysiology techniques is desirable, to better define their contribution toward GERD pathophysiology.

Laparoscopic repair of esophageal hiatal hernia: an analysis of 129 cases

AIM: To evaluate the clinical effects of two different laparoscopic procedures in the management of esophageal hiatal hernia.

METHODS: The clinical data for 129 patients who underwent laparoscopic surgery for esophageal hiatal hernia from March 2001 to February 2009 at our hospital were retrospectively analyzed. All patients were divided into two groups based on the laparoscopic procedure used: Nissen group (360° fundoplication, n = 53) or Dor group (anterior 180° fundoplication, n = 76).

RESULTS: All operations were performed smoothly. No death occurred. Thirty patients (16 in the Nissen group and 14 in the Dor group) developed dysphagia after surgery, and 21 of them relieved within four months. Three patients in the Nissen group received esophageal dilatation for persistent dysphagia. Six months later, six patients had recurrence. The satisfaction rate was 89.51%.

CONCLUSION: Laparoscopic repair of esophageal hiatal hernia is an effective way to treat hiatal hernia. Dor anterior 180° fundoplication can decrease the incidence of postoperative dysphagia, abdominal distension and other complications, which might be caused by the Nissen procedure because of tighter fundoplication and injuries of the branches of vagus.

Preoperative lower esophageal sphincter manometry data neither impact manifestations of GERD nor outcome after laparoscopic Nissen fundoplication

BACKGROUND

Experience with laparoscopic antireflux surgery (LARS) in patients with gastroesophageal reflux disease (GERD) and manometrically intact lower esophageal sphincter (LES) is limited. The disease pattern may be different and LARS may fail to control reflux or result in higher rates of dysphagia. This is the first study investigating the impact of preoperative LES manometry data not only on manifestations of GERD and subjective outcome alone but also on objective outcomes 1 year after LARS.

METHODS

Three hundred fifty-one GERD patients underwent LARS and had subjective symptom and quality of life assessment, upper gastrointestinal endoscopy, barium swallow esophagogram, 24-h esophageal pH monitoring, and manometry pre- and 1 year postoperatively. Patients were divided into those with a preoperatively intact versus defective LES based on intraabdominal length and resting pressure. Baseline and 1-year postoperative follow-up data were compared.

RESULTS

Preoperative manifestations of GERD were similar in each group. Postoperatively, all symptoms except flatulence, quality of life scores, and objective manifestations improved significantly in each group.

CONCLUSIONS

The preoperative manometric character of the LES neither impacts the manifestations of GERD nor subjective and objective outcomes after LARS. Patients with GERD and manometrically intact LES have no higher risk for postoperative dysphagia.