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PubMed2001

Successful management of infantile hypertrophic pyloric stenosis with atropine sulfate.

OBJECTIVE: To evaluate the effectiveness of atropine sulfate in management of infantile hypertrophic pyloric stenosis (IHPS). DESIGN: Prospective observational. SUBJECT: Patients attending the hospital with complaints of persistent vomiting and later clinically and sonographically diagnosed as cases of IHPS were selected for the trial. METHODS: Atropine was initially administered intravenously in a dose of 0.06 mg/kg/day in eight divided doses, increased by 0.15 mg/kg/day till vomiting ceased and remained so for a period of 24 hours at a stretch and ultrasonography showed a transit time (of gastric contents through pyloric canal) of less than 1 minute. Intravenous atropine was then substituted by oral atropine at double the effective IV dose for 3 weeks. Ultrasonographic evaluation of pyloric muscle thickness and length was done at the commencement of IV treatment, after completion of oral treatment and at 3,6,9,12 and 15 months follows up. Transit time of gastric contents was measured at the commencement of intravenous treatment and then daily after the vomiting stopped for more than 24 h at a stretch. RESULTS: Medical treatment of IHPS with atropine was successful in 50/52 (96.2%) cases. Vomiting ceased in 1-3 days in all patients with mild hypertrophy and in 4-7 days in all the cases with moderate hypertrophy. In all except 2 patients with severe hypertrophy, vomiting ceased in 8-12 days. These two cases continued to vomit at least once daily even after 2 weeks of IV treatment and ultimately opted out for pyloromyotomy. All the 50 medically treated children made uneventful recovery during oral therapy except 3 cases (6%) in whom vomiting recurred during the follow-up. These 3 children later responded by increasing the dose of oral atropine. All of them began to gain weight by the time oral therapy was commenced and ultrasonographic evidence of normalization of pylorus was observed in all these children 3-15 months after completion of oral therapy. CONCLUSION: Atropine sulfate proved to be an effective and safe treatment option for IHPS.

Atropine↗
PubMed2004

[Conservative treatment of hypertrophic pyloric stenosis in children].

INTRODUCTION: Hypertrophy of the pylorus causing obstruction of the gastric outlet, or infantile hypertrophic pyloric stenosis (IHPS), is the most common indication for abdominal surgery in infancy. The incidence of the condition is 3-4 per 1000 live births, and male infants are affected more often than females, in 4:1 ratio. Vomiting, as the first symptom, most often occurs between the third and fourth week after birth, rarely after second month, but there have been few reports of vomiting as late as 5 months. Etiology of IHPS is still controversial. Two theories have been quoted most: absence of non-adrenergic and non-cholinergic nerve fibers which are mediators of smooth muscle contraction, and absence of nitric oxide inhibitory innervation of pyloric smooth-muscle resulting in unopposed contraction of the sphincter in response to muscarinic stimulation. Atropine sulfate is known to inhibit acetylcholine competitively in neuroreceptors, acting peripherally as a competitive inhibitor of the muscarinic effects of acetylcholine, leading to decreased gastrointestinal peristalsis. This action is believed to be important in IHPS cases. AIM: The aim of this paper is to provide further information on potential role of atropine in the management of patients with IHPS. METHODS: From April 2000 to October 2002, 22 patients (16 boys and 6 girls), aged 21 days to 3 months, with IHPS were treated by oral administration of atropine sulfate in our institution. Diagnosis of IHPS was based on US examination in all cases. A nasogastric tube was inserted and left in situ. Medical treatment involved initial correction of fluid and electrolyte imbalance combined with oral administration of atropine sulfate. Atropin was given in the form of aqueous solution in initial dose of 0.05 mg/kg/d. The total daily dose was divided into 8 equal doses. Each dose was formulated to be given in a volume of 1 ml. Before the administration of each dose of atropine, stomach was decompressed by suction via nasogastric tube. The infant was placed on the right side with the head on the cot elevated 20 degrees to 30 degrees for 15 to 30 minutes after each atropine dose. Oral feeding with 10 ml of 10% glucose was then attempted. If feeding was tolerated, the same dose of atropine was administered 3 hours later, followed by a trial of 20 ml of 10% glucose. If tolerated, 10 ml of conventional formula was then tried after atropine administration 3 hours later. The volume of formula was then increased 10 ml per feed until full feeding (120 ml/kg/d) was tolerated. Dribbling (2-3 times per day) was ignored. If vomiting occurred, the same dose of atropine, volume and type of feed, were tried again 3 hours later, and if still not tolerated, atropine was increased by 1 microg/kg/dose without increasing the volume of feed. This approach was repeated until oral feeding was tolerated at least twice, and only then the volume of oral feed was increased. During night shift (between 11 p.m. and 5 a.m.), atropine concentration and amount of oral feed were not increased. If vomiting recurred, the volume of oral feed was decreased to the last tolerated volume and maintained until the following day. Oral atropine was increased until predetermined maximum oral dose (0.1 mg/kg/d) was reached. If oral administration of atropine was ineffective, a decision to perform pyloromyotomy was made no later than 7 days after commencement of oral atropine. RESULTS: Atropine had effect (vomiting frequency less than twice per day) on average 3.29 days (range 1-7 days) from commencement. Oral atropine was tolerated very well, and was effective in 18 cases. Four cases were referred to pyloromyotomy, on day 4 (2 patients), day 5 (1 patient) and on day 6 (1 patient) of atropine treatment. Therapy was continued until US showed normalization of pyloric muscle thickness, passage of food through wide pyloric channel and until patients started gaining weight. Average duration of therapy was 24.05 days (11-39 days). Neither of patients from our group was treated with intravenous atropine sulfate. DISCUSSION: Although intravenous atropine is more effective (as shown by Nagita et al), there is an increased incidence of side effects such as flushing and tachycardia. Oral atropine has been used successfully by other teams without side effects, and there were no side effects or complications related to the use of atropine in this study. Prospective, randomized study comparing outcomes of medical versus surgical management of IHPS in our hospital has been currently in progress and will provide further information on potential role of atropine in the management of patients with IHPS. CONCLUSION: We believe it is unlikely that oral or intravenous atropine will ever replace surgery for IHPS, but it may be a good alternative to pyloromyotomy, particularly in children with major concurrent primary disease, or when parents are not enthusiastic about surgery in so young children.

Administration, Oral↗
PubMed1977

Adult hypertrophic pyloric stenosis. Report of an unusual case detected by saline load test.

A case of adult idiopathic hypertropic pyloric stenosis whose radiographic study was repeatedly normal is presented. Only a functional test of gastric emptying disclosed the degree of outlet obstruction present. Vagotomy and pyloroplasty resulted in prolonged relief of obstructive symptoms and a return of the saline load test to normal. The saline load test may be of value when gastroduodenal x-rays or endoscopy do not reveal the cause or extent of gastric outlet obstruction.

Adult↗
PubMed1991

The assessment of dehydration in congenital pyloric stenosis.

In a retrospective review of the records of 88 infants who underwent a Ramstedt pyloromyotomy for pyloric stenosis, biochemical and clinical measures were used to determine the most useful guide to the degree of dehydration on admission. The only measure which correlated to the dehydration was the clinical assessment (r = 0.62). Apart from indicating the presence of alkalosis and hypochloraemia, serum chloride and serum bicarbonate levels were not useful measures. While clinical measures show only a degree of linear correlation with dehydration, they do present the most useful baseline to judge fluid requirements. Biochemistry is needed to measure the electrolyte and acid base imbalance found in the condition.

Body Weight↗
PubMed1990

Infantile hypertrophic pyloric stenosis: experience in a district general hospital.

One hundred and twenty-nine infants with infantile hypertrophic pyloric stenosis were referred to one consultant surgeon over a 13-year period. In all cases general anaesthesia was used and a standardized surgical technique followed. No mortality was recorded. Twenty-seven infants had postoperative complications, excluding vomiting. Wound infections developed in 3% of cases and required treatment; there was no abdominal wound dehiscence. Prophylactic antibiotic treatment was not indicated. Postoperative vomiting occurred in 69% of the infants; in 15% this was severe and required an alteration in clinical management and a lengthened hospital stay. Attention to the severity rather than the incidence of postoperative vomiting will reduce morbidity further. Low morbidity and zero mortality can be achieved in non-specialist centres.

England↗
PubMed1993

Measurement of gastric emptying in infants with pyloric stenosis using applied potential tomography.

Gastric emptying in a group of 49 vomiting infants with infantile hypertrophic pyloric stenosis (IHPS) was investigated using applied potential tomography. Fourteen asymptomatic infants were also studied as a control group. A Dioralyte test feed (25 ml/kg/feed) was used for all the studies. The infants with IHPS were investigated before and at two, four, and seven days after an operation; the other infants were investigated once. The results show that the infants with IHPS have no or little gastric emptying before the operation and gradually return to normal emptying by the seventh day after the operation. A significant difference in gastric emptying was noted between the control infants and the infants with IHPS before and at two and four days after the operation. The applied potential tomography method is suitable for studying gastric emptying in infants, with no morbidity nor complications. It also allows multiple studies to be performed without upset or discomfort.

Electric Impedance↗
PubMed1991

[Surgical treatment of pyloric stenosis of ulcerous origin. Apropos of 68 cases].

The study turns about 68 cases of post ulcerous pyloric stenosis operated from 1970 to 1990, that means 8.5% of the duodenal ulcers (796 cases) operated during this period. The stenosis was entire or strangled in 27 cases (39.7%) with an important gastric dilatation in 34 cases (50%). The treatment has been composed of a gastroenterostomy (30 cases--44%), most of the time with a troncular vagotomy, of a pyloroplasty with vagotomy in 20 cases (29.5%) and of an inferior polar gastric resection in 18 cases (26.5%). The operative mortality was 2 cases (3%). The at distance-results (average follow-up of 7 years) show that 71% of the re-examined patients (45 cases) are classified Visick 1 or 2 and 9% visick 4. Ones concludes to the value of troncular vagotomy with gastroenterostomy which can be realised in all of the occasions and gives good functional results when the vagotomy with pyloroplasty seems to lie more frequently in state to uncertain functional results.

Adult↗