Anti-reflux surgery in the laparoscopic era

Esophagogastric junction distensibility assessed with an endoscopic functional luminal imaging probe (EndoFLIP)

BACKGROUND

Increased esophagogastric junction (EGJ) compliance is a key abnormality in GERD leading to increased volumes of reflux. To date, EGJ distensibility has been measured only with investigational barostat-based prototype devices.

OBJECTIVES

The aim of the study was to test the endoscopic functional luminal imaging probe (EndoFLIP), a new commercially available technology designed to measure intraluminal distensibility, by assessing the EGJ of GERD patients and controls.

DESIGN

Prospective case-control series.

SETTING

Tertiary referral center.

SUBJECTS

Twenty GERD patients and 20 controls studied during a routine esophagogastroduodenoscopy.

METHODS

The EndoFLIP was passed through the endoscopic instrumentation channel and positioned across the EGJ. The EndoFLIP uses impedance planimetry to measure 16 cross-sectional areas (CSA) along with the corresponding intrabag pressure within a 4.6-cm cylindrical segment of a fluid-filled bag.

MAIN OUTCOME MEASUREMENT

EGJ distensibility was assessed with 10- to 40-mL volume-controlled distentions.

RESULTS

In both groups, the least distensible locus at the EGJ was usually at the hiatus. As a group, GERD patients exhibited two- to threefold increased EGJ distensibility compared with controls, particularly at 20- to 30-mL distention volumes, values quantitatively similar to previous measurements with barostat-based devices. The endoscopic estimation of EGJ distensibility, the flap valve grade, correlated poorly with EndoFLIP measurements.

LIMITATIONS

Heterogeneity of GERD patients.

CONCLUSIONS

Measurement of EGJ distensibility with EndoFLIP is feasible during clinical endoscopy. Stratifying GERD patients according to this physiological parameter may facilitate the identification of patient subgroups responsive or unresponsive to medical or surgical treatments.

Endoluminal fundoplication – the Hill procedure

Endoluminal operations for reflux are currently limited by the inability to visualise and manipulate structures outside the wall of the gut. This may be possible using endoscopic ultrasound (EUS). The aim of this study was to define EUS-anatomy of structures outside the gut which influence reflux; to place stitches in the median arcuate ligament (MAL); to perform posterior gastropexy (Hill procedure) and test the feasibility of crural repair under EUS control in pigs. In survival experiments in 14 pigs, using linear array echo-endoscopes the MAL and part of the right crus were identified and punctured with a needle, which served as a carrier for a tag and thread. These were anchored into the muscle. An endoscopic sewing device was used allowing stitches to be placed through a 2.8 mm accessory channel to any predetermined depth. New methods allowed knot-tying and thread-cutting through the 2.8 mm channel of the echo-endoscope. Stitches were placed through the gastric wall into the MAL and one just beyond the wall of the lower esophageal sphincter (LES). They were tied together and locked against the gastric wall. Preoperative manometry showed a median LES pressure of 11 mm/Hg and 21 mm/Hg after stitch placement (p = 0.0028). The length of the LES increased from median 2.8 cm pre-procedure to 3.5 cm post-procedure. At post mortem, the force to pull the tags out of the MAL was 2.8 kg median. This study shows that transgastric gastro-esophageal reflux surgery using stitching under EUS control can significantly increase the lower oesophageal sphincter pressure in pigs.

Long-term results of laparoscopic Nissen fundoplication due to gastroesophageal reflux disease. A ten year follow-up in a low volume center

BACKGROUND AND AIMS

Laparoscopic 360 degrees nissen fundoplication has been our routine surgical procedure since 1995, in the treatment of gastroesophageal reflux disease (GERD). We have reviewed our results of patients treated with laparoscopic Nissen fundoplication (LNF) during 1995-1998.

MATERIAL AND METHODS

170 patients have undergone LNF in our hospital since 1995. during the period of 1995-1998, 33 patients were treated. all patients were asked to return a structured follow-up questionnaire, using a Visick grading scale, after an average of 69 months (2003) and 117 months (2007). 29 questionnaires (90%) were answered in 2003, and 31 questionnaires (97%) were answered in 2007. one patient died at home before the first questionnaire in 2003, and is therefore not included. We present our results on LNF after an observation time of 117 months (range 99-144 months).

RESULTS

patient satisfaction after LNF is rated as very good or good (Visick 1-2) in 93% in 2003 and 97% in 2007. 97% of the patients would recommend the same treatment to other patients with similar symptoms at ten year follow up. One patient has undergone resurgery during follow up. Daily gas bloat and flatulence is reported in 52% in 2003 and 39% in 2007, and is the most common reason for reduced satisfaction. Five patients report of reflux symptoms, one patient daily and four patients sometimes, where the first patient still uses proton pump inhibitor (PPI) daily and three patients use PPI occasionally.

CONCLUSIONS

patient satisfaction after LNF treatment for gerd is high at long-term (10 years) follow-up. Bloating and flatulence persistently occurred to a great extent and the need for preoperative information regarding these symptoms is important.

Dysphagia after laparoscopic Nissen fundoplication

OBJECTIVE

To investigate the frequency and severity of dysphagia during the first 8 weeks after laparoscopic Nissen fundoplication for gastro-oesophageal reflux disease. So far, there have been no studies reporting data on day-to-day occurrence of dysphagia after laparoscopic fundoplication in a consecutive series of patients. This may explain why the frequency of dysphagia varies greatly in the literature (4-100%).

MATERIAL AND METHODS

Forty consecutive patients, undergoing elective laparoscopic Nissen fundoplication, completed a standard dysphagia registration diary each day during the first 8 weeks after surgery. Patients who preoperatively had suffered from dysphagia were excluded. Thus, none of the patients had dysphagia in the 2-month period before surgery. Ten patients undergoing elective cholecystectomy served as controls. Data were quantified, and a score value of 4 or more was considered bothersome.

RESULTS

Thirty-seven patients (93%) experienced some degree of dysphagia during the observation period. Sixteen patients (44%) had at least one day with annoying dysphagia. The dysphagia started 1-2 days after surgery, was most prominent during the first few weeks, and subsided in nearly all cases after 5-6 weeks. Two patients with persistent dysphagia were treated once with balloon dilatation. None of the patients in the control group had dysphagia.

CONCLUSIONS

Nearly all patients experience some degree of dysphagia after laparoscopic Nissen fundoplication, and in nearly half of the patients it is considered annoying. However, even severe dysphagia usually disappears within 5-6 weeks. These results suggest a conservative attitude for the first 1-2 months after surgery. The data may also serve as a background for preoperative information to the patients.

Pars Plana Vitrectomy: Comparison of Three Techniques for the Treatment of Diabetic Vitreous Hemorrhage

BACKGROUND AND OBJECTIVE

To compare the outcome of three vitrectomy techniques in the treatment of diabetic vitreous hemorrhage.

PATIENTS AND METHODS

The study group included 38 patients (38 eyes) with diabetic vitreous hemorrhage. Three-port pars plana vitrectomy was used in 20 eyes, unimanual vitrectomy with indirect ophthalmoscopy in 10 eyes, and sutureless 25-gauge vitrectomy in 8 eyes. Main outcome measures were operative time, preoperative and postoperative visual acuity and intraocular pressure, and postoperative complications.

RESULTS

Mean operative time was 66 minutes for three-port vitrectomy, 35 minutes for indirect vitrectomy, and 40 minutes for 25-gauge vitrectomy. Mean duration of follow-up was 26 months (range = 5 to 43 months). All three techniques successfully treated the vitreous hemorrhage, with similar best-corrected visual acuity outcome and similar complication rates. A greater tendency for hypotony on the first postoperative day was observed in the 25-gauge vitrectomy group.

CONCLUSIONS

The three major techniques for treating vitreous hemorrhage are similarly effective and yield similar outcomes. The specific technique used should be selected on the basis of the clinical status of the patient and the skills of the surgeon.

Prospective analysis of convalescence and early pain after uncomplicated laparoscopic fundoplication

BACKGROUND

The aim of this study was to define factors that limit a short period of convalescence and to characterize the pain experienced after laparoscopic fundoplication.

METHODS

This prospective study included 60 consecutive patients who underwent uncomplicated laparoscopic Nissen fundoplication for gastro-oesophageal reflux disease. Patients were recommended to convalesce for 2 days after operation. Duration of convalescence, dysphagia, fatigue, nausea, vomiting and different pain components were registered daily during the first week and on days 10 and 30 after fundoplication.

RESULTS

Thirty-nine patients took a median of 13 (range 3-41) days off work and 60 stayed away from recreational activity for a median of 4 (range 1-22) days. Pain, fatigue and plans made before operation were the main contributors to prolonged convalescence. Some 30-40 per cent of the patients reported moderate or severe dysphagia during the study period. Fatigue scores were significantly increased for 6 days after surgery (P < 0 . 001). Visceral pain dominated over incisional and shoulder pain throughout the study. At day 30, 17 per cent of the patients reported moderate or severe visceral pain.

CONCLUSION

Pain and dysphagia are significant problems after uncomplicated total laparoscopic fundoplication. The time taken off work and away from recreational activity exceeded the recommended 2 days of convalescence, justifying further efforts to optimize early clinical outcome after total laparoscopic fundoplication.

Transgastric gastropexy and hiatal hernia repair for GERD under EUS control: a porcine model

BACKGROUND

Endoluminal operations for gastroesophageal reflux currently are limited by the inability to visualize and manipulate structures outside the wall of the gut. This may be possible by using EUS. The aims of this study were the following: to define the EUS anatomy of structures outside the gut that influence reflux, to place stitches in the median arcuate ligament, to perform posterior gastropexy, and to test the feasibility of crural repair under EUS control in pigs.

METHODS

In survival experiments in 22 pigs, by using a linear-array echoendoscope, the median arcuate ligament and part of the right crus were identified and punctured with a needle, which served as a carrier for a tag and thread. These were anchored into the muscle. An endoscopic sewing device was used, allowing stitches to be placed through a 2.8-mm accessory channel to any predetermined depth. New methods allowed knot tying and thread cutting through the 2.8-mm channel of the echoendoscope.

RESULTS

Stitches were placed through the gastric wall into the median arcuate ligament, and one stitch was placed just beyond the wall of the lower esophageal sphincter. The stitches were tied together and locked against the gastric wall. Median lower esophageal sphincter pressure, determined manometrically, was 11 mm Hg before surgery and 21 mm Hg after stitch placement (p=0.0002). The length of the lower esophageal sphincter increased from a median of 2.8 cm before the procedure to 3.5 cm after the procedure. At the postmortem, the median force required to pull the tags out of the median arcuate ligament was 2.8 kg.

CONCLUSIONS

This study demonstrates that transgastric gastroesophageal reflux surgery, by using stitching under EUS control, can significantly increase lower esophageal sphincter pressure in pigs.

Initial experience using the transconjunctival sutureless vitrectomy system for vitreoretinal surgery

OBJECTIVE

To describe the initial experience and to evaluate the safety and feasibility of using the 25-gauge Transconjunctival Sutureless Vitrectomy System (TSV) for a variety of vitreoretinal procedures.

DESIGN

Retrospective review of a consecutive interventional case series.

PARTICIPANTS

Thirty-five eyes of 33 patients, including cases of idiopathic epiretinal membrane (12 cases), retinal detachment (6 cases), macular hole (5 cases), branch retinal vein occlusion (4 cases), retinopathy of prematurity (4 cases), persistent diabetic macular edema (1 case), diabetic vitreous hemorrhage (1 case), retained lens material after cataract extraction (1 case), and Norrie disease (1 case).

INTERVENTION

All patients underwent surgery using the 25-gauge TSV.

MAIN OUTCOME MEASURES

Intraocular pressure, visual acuity, and postoperative complications.

RESULTS

The median preoperative intraocular pressure was 16 mmHg (range, 10-21 mmHg), whereas the median intraocular pressure on the first postoperative day was 12 mmHg (range, 6-28 mmHg). The median intraocular pressure at 1 week and 1 month were both 16 mmHg (range, 10-30 mmHg). Overall, the median preoperative visual acuity was 20/100 (range, 20/30 to hand motions), and the median postoperative visual acuity after a mean follow-up of 14 weeks (range, 1-60 weeks) was 20/60 (range, 20/20-20/150). One eye developed a postoperative retinal detachment.

CONCLUSIONS

The 25-gauge TSV seems to be practical and safe for a variety of vitreoretinal procedures. The concept of transconjunctival surgery has the potential to increase the efficiency of a variety of vitreoretinal surgeries and possibly hasten the postoperative recovery and outcomes in several conditions by simplifying the surgical procedure; minimizing surgically induced trauma; and decreasing the convalescence period, the operating time, and the postoperative inflammatory response.