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278

SECTION 2

Esophagus, Stomach and Duodenum

 

 

 

STEP 6 (continued)

Closure of the hiatal defect (posterior cruroplasty)

 

 

 

 

Sometimes one or two anterior sutures are mandatory to avoid an “S-shape” of the distal esophagus. The inferior edge of the newly created hiatus may produce an external compression leading to dysphagia (B).

Some groups use a prosthetic reinforcement with polytetrafluoroethylene (PTFE) of posterior cruroplasty to reduce the rate of postoperative wrap herniation into the mediastinum.

B

Operation for Paraesophageal Hernia

279

 

 

STEP 7

Nissen fundoplication

 

 

Perform a floppy 2-cm three-stitch Nissen fundoplication over a 56F bougie after mobi-

 

 

 

 

lization of the great curvature (we divide the short gastric vessels). The most cephalad

 

 

stitch of the fundoplication superficially incorporates the esophagus wall.

STEP 8

Anterior gastroplasty

 

Perform an anterior gastroplasty with two to three interrupted nonabsorbable 2-0

 

 

Ethibond sutures between the greater curvature and the anterior abdominal wall

 

to prevent postoperative intra-abdominal gastric volvulus.

280

SECTION 2

Esophagus, Stomach and Duodenum

 

 

 

 

Postoperative Tests

 

 

Resume alimentation the day after surgery

 

 

Obtain a barium esophagogram within 1month (for follow-up purposes)

Postoperative Complications

Pneumothorax

Pleural effusion

Vagus nerve injury (anterior and posterior bundles)

Cardiac dysrhythmia

Pericarditis

Pneumonia

Pneumothorax

Pulmonary embolism

Tricks of the Senior Surgeon

Use nonabsorbable mattress sutures to perform the posterior cruroplasty.

At the end of the procedure, perform an anterior gastropexy to avoid postoperative gastric volvulus.

Management of the Duodenal Stump

Matthias Peiper, Wolfram T. Knoefel

Introduction

 

One of the most serious complications in the postoperative period after gastrectomy

 

is a leakage from the duodenal stump. Historically it has occurred most frequently

 

in Billroth II resections following emergency surgery for duodenal ulcer perforating

 

in the pancreatic head and less frequently after resections for gastric cancer. Causes

 

of duodenal stump suture dehiscence are:

 

Technical failure

 

Postoperative pancreatitis

 

Attempt to close a severely diseased and scarred, edematous duodenal stump

 

Blood clots in the duodenal bed leading to infection

 

Excessive use of sutures at the stump leading to necrosis

 

Indications and Contraindications

 

 

Peritonitis

Indications

 

Signs of sepsis

 

 

No contraindications in case of emergency

Contraindications

Preoperative Investigations/Preparation for Procedure

Analysis of abdominal secretion in the drain tube (bilirubin, amylasis, lipase)

Physical examination

Abdominal ultrasound

CT

282

SECTION 2

Esophagus, Stomach and Duodenum

 

 

 

 

Procedure

 

 

Access

 

The abdominal cavity is opened through the previous incision.

STEP 1

If the dehiscence is small or barely visible, an omental flap is performed and the area well drained. For some patients, primary suture of the duodenum might be performed. This is usually hand-sewn, though some surgeons prefer the stapler technique.

STEP 2

If technically feasible, an end-to-side duodenojejunostomy may be performed using single-layered sutures (Vicryl 3-0).

Management of the Duodenal Stump

283

 

 

STEP 3

If the duodenum is opened widely and its walls edematous, a primary closure is usually unsuccessful since the sutures will not last. Here it is suggested to insert a Foley catheter into the leak, which may be fixated using a purse-string suture. The catheter shall be completely covered by the greater omentum and externalized using a separate incision. Most fistulas will close spontaneously after 3–4weeks. An alternative is to cover of the leak by a jejunal loop using the Roux-Y technique.

STEP 4

Late suture dehiscences will present usually 2weeks after (distal) gastrectomy. This course is less dramatic, since postsurgical adhesions lead to a compartmentation of the abdominal cavity. If the drainage is already removed, duodenal juice might drain via the former drainage incision. By using total parenteral nutrition as well as antibiotics, the fistula will close spontaneously. An alternative is the interventional placement of a drainage, such as a Sonnenberg catheter, for optimized drainage of the duodenal fluid.

284 SECTION 2 Esophagus, Stomach and Duodenum

Standard Postoperative Investigations

Daily check of the abdominal drainage

Postoperative Complications

Recurrent insufficiency

Insufficiency of the duodenojejunostomy

Peritonitis

Sepsis

Pancreatitis

Fistula formation

Wound infection

Tricks of the Senior Surgeon

Tissue should not be too edematous. Therefore, the indication for relaparotomy should immediately be established once duodenal stump insufficiency has been diagnosed.

For some patients, all organ-preserving surgical interventions might not lead to improvement of the patient’s condition. As ultima ratio a partial duodenopancreatectomy (Whipple procedure) might be necessary.

Operation for Morbid Obesity

Markus Weber, Markus K. Müller, Michael G. Sarr

Introduction

The prevalence of obesity has increased dramatically over the last several decades worldwide and is currently reaching epidemic proportions. One out of five Americans is currently obese. Morbid obesity, defined as body mass index (BMI) >40kg/m2, is associated with many diseases responsible for a high prevalence of morbidity and mortality, such as insulin-resistant diabetes mellitus, hypertension, coronary artery disease, hyperlipidemia, and sleep apnea. These direct weight-related complications eventuate in enormous health care costs. A consensus conference organized by the National Institutes of Health (NIH) in 1991 concluded that surgical therapies offer the best long-term approach for morbid obesity.

Current bariatric surgical procedures are divided into restrictive, malabsorptive, and combined procedures.

Restrictive procedures aim to reduce the volume of oral intake. These include laparoscopic adjustable gastric banding (LAGB) and vertical banded gastroplasty (VBG).

Malabsorptive procedures are designed to reduce caloric absorption by diminishing the absorptive surface for digestion and/or absorption. The most common procedures currently are biliopancreatic diversion (BPD) and duodenal switch with a biliopancreatic diversion (DS/BPD).

Combined procedures utilize both a restrictive and a malabsorptive anatomy and involve primarily the Roux-en-Y gastric bypass (RYGB) (the malabsorptive effect correlates with length of Roux limb).

This chapter addresses the three most commonly performed bariatric procedures. RYGB (A-1) and VBG (A-2) were both considered as being proven effective by the National Institutes of Health consensus conference in 1991. The third procedure, which is widely used in Europe and Australia and is becoming more common in the United States, is LAGB (A-3). Of the three procedures, RYGB has been best documented to produce and maintain long-term weight loss in severely obese patients. All three procedures can be performed by an open or laparoscopic approach. Because of the high incidence of incisional hernia (15–20%) after open surgery and better patient comfort and acceptance after a laparoscopic approach, increasing numbers of surgeons perform these operations laparoscopically. Therefore, this chapter focuses on the laparoscopic approach with remarks and illustrations on open surgery as well.

A-2

 

A-3

A-1

286

 

SECTION 2

Esophagus, Stomach and Duodenum

 

 

 

 

 

 

Indications and Contraindications

 

 

 

 

Patients with ineffective dietary attempts for weight control and

Indications

 

 

BMI >40kg/m2 or

 

 

 

BMI >35kg/m2 with weight-related comorbidity

 

 

 

 

Age <16 and >60years (these are relative contraindications)

Contraindications

 

 

Obesity history <3years

 

 

 

Unacceptable operative risk (e.g., unreconstructable coronary artery disease)

 

 

Active gastric or duodenal ulcer

 

 

 

Active inflammatory bowel disease

 

 

 

Chronic infectious disease (e.g., viral hepatitis)

 

 

 

Portal hypertension

 

 

 

Pregnancy

 

 

 

Untreated endocrine disorders

 

 

 

Severe psychiatric disorders (psychosis, uncontrolled depression, active substance

 

 

 

abuse)

 

 

 

 

Height less than 155cm

 

Relative Contraindications

 

for Laparoscopic Approach

Multiple intra-abdominal operations

 

 

 

Previous gastric bariatric procedures

 

Operation for Morbid Obesity

287

 

 

Preoperative Investigations/Preparation for the Procedure

Clinical

Physical examination (abdominal hernia, former abdominal surgery)

Phenotype of obesity: androgenic (central obesity) vs gynecoid (peripheral obesity) (note: male/androgene phenotype and BMI >50 associated with increased preand perioperative morbidity)

ECG, pulmonary function tests (if necessary), sleep study if symptoms suggest sleep apnea, and detailed cardiac evaluation if necessary (echocardiography, functional cardiac scintigraphy)

Laboratory

Nutritional and metabolic parameters

Hormonal parameters

Baseline arterial blood gas

Upper GI Examinations

Gastroscopy in selected patients, esophageal manometry in patients with gastroesophageal reflux disease if a restrictive procedure is to be performed (VBG, gastric banding)

Radiology: upper GI studies for reoperative surgery and especially after failed gastric banding (reflux, esophageal dysmotility, pouch dilatation, band penetration?)

Anthropometry/Body Composition (Optional)

Bioimpedance analysis

Calorimetry

Psychologic Evaluation

Exclude psychosis (rare), severe uncontrolled depression, active substance abuse, or borderline personality disorder

Establish psychiatric care if necessary