Hirschsprung's disease in Texas: a plea for early diagnosis.
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Adolescent↗
Biomedical subjects
T E Lobe
Publications and source records attributed to T E Lobe.
A neo-urethral enteroplication for urinary continence in a case of cloacal exstrophy.
A four-year-old female, born with cloacal exstrophy, returned for evaluation of her urinary incontinence two years after her initial repair. Her bladder had been turned in at her first operation and had a capacity of approximately 15 cc. Her ureters exited close to the reconstructed introitus. At reoperation, her bladder measured 3.5 cm in length and appeared to be well healed and of normal consistency. An anterior wall bladder flap was created which was based at the dome and was reflected 180 degrees cephalad. The bladder was then tubularized over a #10 french catheter to create a "neo-urethra" of 6 cm in length. Both ureters were reimplanted into an intestinal conduit, constructed 18 cm long, in a nonrefluxing fashion. The distal, oversewn, end of the conduit was sewn down into the pelvis, at the level of the bladder neck and posterior to the "neo-urethra." The end of the neo-urethra was anastomosed to the anterior wall of the intestinal reservoir, which was then plicated circumferentially around the neo-urethra in a manner very similar to the construction of a Nissen fundoplication for gastro-esophageal reflux. Pressure in the reservoir serves to keep the neo-urethra closed so that urine cannot escape until the neo-urethra is intubated. She is currently continent of urine with a successful program of clean intermittent catheterization. Her upper tracts remain undilated and are free of intestinal-ureteral reflux. Her urine is sterile.
Child, Preschool↗
Use of naloxone in neonatal septic shock.
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Animals↗
Gastrointestinal hemorrhage in children. A pragmatic update.
Gastrointestinal hemorrhage in infants and children is notable for its association with benign disease and its varied, age-dependent etiologies. We have presented these in brief. Much of the information presented, particularly that related to diagnostic endoscopy and sclerotherapy, represents extension of commonly used adult techniques to the pediatric population. Guidelines for resuscitation and diagnosis are provided with the expectation that an individual clinical assessment will lead to modification. Rigidity in approach is to be avoided. Notable recent changes in the management of children with GI hemorrhage are summarized and placed in perspective.
Acute Disease↗
The study of fecal-Escherichia coli peritonitis-induced septic shock in a neonatal pig model.
Peritonitis-induced septic shock in the neonate is associated with a high mortality. Because there exists no clinically relevant model to study resuscitation of these patients, a model using the neonatal pig was developed. After arterial and central venous cannulation, and placement of a left pulmonary-artery thermodilution catheter, 12 anesthetized neonatal pigs were "resuscitated" with fluids (5% albumin in lactated Ringer's solution at 15 ml/kg/hr), antibiotics, and correction of acidemia. The pigs were divided into two groups: a control group (n = 5), which was not subjected to peritonitis and which was killed after 6 hours of monitoring, and a septic group (n = 7), which was inoculated with an intraperitoneal injection of sterile pig feces and Escherichia coli and was monitored until death (mean survival time (S.D.) 546(159) minutes). Serial measurements of hemodynamic and laboratory data were obtained. While pigs in the control group showed no significant changes in these data as measured against time, the pigs in the experimental group showed an early transient rise in cardiac index which was significant (p less than .05) and which was followed by a steady decline in cardiac index until death. These changes in cardiac index were accompanied by a continuous decline in mean arterial pressure, central venous pressure, pulmonary artery pressure, and systemic vascular resistance index, while pulmonary vascular resistance index showed a gradual continuous rise. The observed changes in hemodynamic and laboratory data mimic those anticipated in the human neonate with peritonitis-induced septic shock. This model proves reliable and reproducible, and shows promise as a tool to study the resuscitation of neonates with septic shock.
Animals↗
Hexosaminidase: a biochemical marker for necrotizing enterocolitis in the preterm infant.
To evaluate hexosaminidase as a biochemical marker for the early detection of necrotizing enterocolitis in preterm infants, 33 preterm infants without necrotizing enterocolitis and 18 preterm infants with necrotizing enterocolitis had hexosaminidase activity measured during the course of their hospitalization. Although hexosaminidase activity could not identify those preterm infants with necrotizing enterocolitis who had impending perforation, the data strongly suggest that measurements of serum hexosaminidase activity may provide an early biochemical indication of the presence of necrotizing enterocolitis in the preterm infant. Hopefully, early detection of necrotizing enterocolitis in these infants will reduce the morbidity and mortality of this disease.
Clinical Enzyme Tests↗
Fecal continence following an anterior-sagittal ano-enteroplasty in a patient with cloacal exstrophy.
A two-year-old Latin American female was referred for treatment of what appeared to be a straightforward case of cloacal exstrophy. At operation, incision along the superior margin of the exstrophic bladder allowed identification of an unusual variant of exstrophy which consisted of bladder exstrophy; erminal colon duplication, the common medial wall of which protruded 8 cm beyond the end of the bowel lumen, and which exited ventrally and immediately caudad to the exstrophic bladder; an enteric diverticulum at the superior rim of the bladder; and two small vaginae, existing laterally on either side, at the junction between the bladder and the terminal bowel. The terminal bowel was mobilized, the duplications were excised, and a tapering enteroplasty was performed. Despite a flat-appearing bottom, a posterior muscle complex was identified which extended anterolaterally and attached to the pubis on either side. Following observation of an appropriate response to electrical stimulation, the muscle complex was partially divided in the midline, from anterior to posterior, just enough to make room for the tapered bowel. The muscle was then reapproximated in the midline anteriorly, surrounding the bowel, and an anoplasty was constructed. The bladder was closed, and the pubic rami were wired together (bilateral posterior iliac osteotomies were performed at the beginning of the operation). One and 1/2 years following this procedure, the child has a normal "rectal" exam with a palpable sphincter. She has 3 to 4 solid bowel movements daily without soiling, and she awaits genitourinary reconstruction.
Abnormalities, Multiple↗
Sonographic demonstration of duodenal obstruction with midgut volvulus.
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Duodenal Diseases↗
Staged reduction using a Silastic sac is the treatment of choice for large congenital abdominal wall defects.
Although the survival for infants with abdominal wall defects (AWD) has dramatically improved, agreement on the optimum surgical approach has not been reached. From October 1970 through March 1983, 31 neonates with gastroschisis and 14 neonates with omphalocele were treated. Reduction of the herniated viscera with primary fascial and skin closure was performed in 30% of the gastroschisis patients and 64% of the omphalocele patients. The remaining infants were managed by staged reduction of the herniated viscera using a Silastic sac. Overall, 27 of 45 patients (60%) were treated by staged reduction. Our procedure for staged reduction includes application of a Silastic sac as soon as the infant is stable. The herniated contents are reduced as rapidly as possible so that the prosthetic sacs can be removed within seven days. Abdominal wall stretching, "milking" of the intestinal contents into the stomach for decompression and a gastrostomy tube are avoided. The duration of hospitalization was not influenced by the method of abdominal wall closure in the gastroschisis infants. However, the hospitalization was approximately 10 days longer for those omphalocele patients managed by staged reduction. Complications which occurred in these patients include: respiratory distress (1); wound infection after removal of the Silastic sac (2); intestinal fistula (1); intestinal resection (3); intraabdominal sepsis (1); and incisional hernia (3). There was one death in the omphalocele group and three deaths in the gastroschisis group. Therefore, the overall survival for the 45 patients with AWD was 91%. Staged reduction of the herniated abdominal contents can be a safe, uncomplicated method of obtaining abdominal wall closure in neonates with AWD.
Abdominal Muscles↗
Hexosaminidase: a marker for intestinal gangrene in necrotizing enterocolitis.
Detection of intestinal ischemia, prior to necrosis, is a major clinical problem. The lysosomal acid hydrolase, hexosaminidase (HEX), is known to be elevated in intestinal infarction. To determine if this enzyme could differentiate between partial intestinal ischemia and full-thickness intestinal gangrene, the following rat study was designed. Partial segmental intestinal ischemia was created by ligating alternate vascular bundles over a short (6 vessel) segment of the small-bowel mesentery, and complete segmental intestinal vascular occlusion was achieved by ligating the blood supply to the ileocecal segment. Preoperative serum HEX values were obtained from 15 animals. The rats were separated into one sham-operated and two intestinal ischemia groups. At four hours after surgery HEX values were determined. Total HEX activity was significantly elevated four hours after insult in both partial and complete intestinal ischemia, (P less than 0.005 and P less than 0.001 respectively). Total HEX activity was greater in complete intestinal ischemia than in partial ischemia, (P less than 0.05). Three neonates with intestinal perforation, secondary to necrotizing enterocolitis, were evaluated. The mean preoperative HEX activity was 1421 nmol/hr/mL serum and the mean post-resection HEX activity was 808 nmol/hr/mL serum. These data suggest that serum HEX activity may be a good marker for intestinal gangrene in neonates with necrotizing enterocolitis.
Animals↗
A prospective evaluation of intestinal stenosis following necrotizing enterocolitis.
In a retrospective study, we noted a 25% incidence of colonic stenosis following medical management of necrotizing enterocolitis (NEC). From March, 1980 to March, 1982, we performed routine contrast enemas to prospectively identify the incidence of colonic stenosis following medical management for NEC. Three to four weeks following recovery from the acute phase of NEC 28 infants were prospectively evaluated by contrast enema for post-NEC stenosis. Ten of the 28 infants had one or more sites of colonic stenosis (36%). Four infants were symptomatic when the contrast enema was performed and underwent colonic resection. Three of the six asymptomatic infants developed symptoms requiring surgery within 33 days following hospital discharge. Therefore, seven of the ten infants with post-NEC stenosis required segmental colectomy. Three patients with colonic stenosis have remained asymptomatic and are being followed on an outpatient basis. The weight gain in these three infants has been steady and has paralleled a normal growth curve. The data from this study demonstrate that: (1) the incidence of post-NEC colonic stenosis is 36%; (2) patients with colonic stenosis initially may not have symptoms but may become symptomatic after hospital discharge; (3) the sites of stenosis frequently are located in the left colon; and (4) normal weight gain can occur despite the presence of colonic stenosis. Because of the above findings, we recommend routine contrast enemas in all patients with NEC who have had successful medical management.
Barium Sulfate↗
Prospective evaluation of radionuclide scanning in detection of intestinal necrosis in neonatal necrotizing enterocolitis.
The ability of external imaging to demonstrate intestinal infarction in neonatal necrotizing enterocolitis (NEC) was prospectively evaluated. The radiopharmaceutical technetium--99m diphosphonate was injected intravenously and the patients subsequently underwent abdominal scanning. Clinical patient care and interpretation of the images were entirely independent throughout the study. Of 33 studies, 7 were positive, 4 were suspicious, and 22 were negative. One false positive study detected ischemia without transmural infarction. The second false positive scan occurred postoperatively and was due to misinterpretation of the hyperactivity along the surgical incision. None of the suspicious cases had damaged bowel. The two false negative studies clearly failed to demonstrate frank intestinal necrosis. The presence of very small areas of infarction, errors in technical settings, subjective interpretation of scans and delayed clearance of the radionuclide in a critically ill neonate may all limit the accuracy of external abdominal scanning. However, in spite of an error rate of 12%, it is likely that this technique will enhance the present clinical, laboratory, and radiologic parameters of patient management in NEC.
Clinical Trials as Topic↗
Selective management of injured spleen.
During the past 6 years, 68 consecutive children suffering from splenic trauma have been treated according to a selective management plan. Twenty-two patients (32%) underwent splenectomy, parenchymal repair was performed on 16 occasions (24%), and nonoperative treatment was employed in 30 children (44%). Overall results have been good in all three groups. Two children (3%) died as a result of their injuries, and 10 complications were recorded. Both deaths and 7 of the 10 complications occurred in the patients undergoing splenectomy. By utilization of a basic management plan that favors nonoperative treatment over splenic repair and repair over splenectomy, splenic salvage has been successfully accomplished in 86% of the 49 patients treated since 1977.
Adolescent↗
An improved method of wound management for pediatric patients.
Polyurethane moisture-vapor permeable film (MVPF), a new product for the management of superficial wounds, was studied in an uncontrolled clinical trial in 50 pediatric patients. MVPF was used in the management of skin graft donor sites, partial thickness burns, traumatic abrasions, decubitus ulcers, intravenous skin sloughs, and a variety of other wounds. Advantages of this material over standard dressing techniques include: more comfort, freedom of motion of the injured part, fewer dressing changes, and apparently faster epithelialization in many cases. Folliculitis, noted in one patient, was the only complication. MVPF is easily adaptable to outpatient wound management, and has gained rapid acceptance by nurses, patients and parents.
Bandages↗
Glucagon deficiency and hyperaminoacidemia after total pancreatectomy.
The first goal of this study was to investigate whether totally pancreatectomized patients are glucagon deficient and if so, to what degree. Immunoreactive glucagon (IRG) concentrations in peripheral plasma of nine pancreatectomized patients were not significantly different from those of 10 normal controls as measured by two antisera (30-K and RCS-5) both detecting the COOH-terminal portion of the molecule and one (RCS-5) postulated to be specific for pancreatic glucagon. Plasma from six of nine pancreatectomized patients were fractionated over Sephadex G-50 and IRG was measured with both antisera in the column eluates. Using 30-K, 80.8 +/- 9% of the IRG eluted within the void volume. This material was rechromatographed on Sephadex G-200 and found to have an apparent mol wt of approximately 200,000. Only 18.3 +/- 9% eluted in the IRG3500 region. IRG3500 was significantly reduced in pancreatectomized patients as compared to normal controls (49 +/- 9 vs. 18 +/- 9 pg/ml, P less than 0.05). Using RCS-5, all IRG (corresponding to 20 +/- 6 pg/ml of plasma) eluted in the IRG3500 region. The second goal of this study was to investigate the effects of chronic glucagon deficiency on plasma amino acids. In the nine pancreatectomized patients studied, postabsorptive plasma concentrations of serine, alanine, arginine, glycine, threonine, citrulline, alpha-aminobutyrate, and tryosine were significantly elevated compared to values obtained from 20 normal controls. Physiological glucagon increments produced in two pancreatectomized patients by infusion of glucagon (6.25 and 8.0 microgram/h, respectively) resulted in normalization of the hyperaminoacidemia within 22 h. We conclude (a) that pancreatectomized patients are partially glucagon deficient because of diminished basal as well as diminished stimulated glucagon secretion; (b) that fasting concentrations of certain glucogenic amino acids are elevated in pancreatectomized patients probably as result of reduce; hepatic gluconeogenesis; and (c) that the RCS-5 antiserum is not "pancreatic glucagon" specific.
Adult↗
Congenital vas deferens--ureteral connection.
Congenital drainage of the vas deferens into a ureter permits retrograde passage of urine through the vas to the epididymis. If this anomaly is accompanied by urinary tract pathology with vesicoureteral reflux, hydroureter, stasis, and infection, the passage of urine into the vas can very well lead to epididymitis of a chronic or recurring nature and secondary scrotal abscesses. Two cases of this rare anomalous connection are presented in which such scrotal infections occurred. The diagnosis should be suspected on clinical grounds and can be confirmed by cystograms in which the dye refluxes up the ureter and passes into the vas. The association of rectal anomalies is of embryologic significance and may be additionally important clinically by further suggesting the possibility of the ureteral-vas anomaly.
Abnormalities, Multiple↗
Abdominal aortic surgery in the presence of a horseshoe kidney.
Prior experience with the rare combination of horseshoe kidney and significant atherosclerotic vascular disease suggests difficulty in intraoperative management, often requiring division of the renal isthmus or sacrifice of some renal tissue. Seven patients have been managed successfully over the past ten years at The Ohio State University Hospital. There were six men and one woman, ranging in age from 39 to 66 years. Of the five patients with abdominal aortic aneurysm, four had a pulsatile abdominal mass, three had abdominal pain, and one had back pain. The other two patients had progressively symptomatic aortoiliac disease. All seven patients had hypertension, easily controlled by medication. Critical diagnostic procedures are preoperative intravenous pyelogram (IVP) and abdominal aortic arteriogram. The IVP detected the previously unsuspected diagnosis in 100% of the cases. The arteriogram accurately located the aneurysm in relation to the renal vascular supply, and disclosed aberrant blood supply in three of four patients with aberrant vessels. All seven horseshoe kidneys were fused at the lower pole. The operative approach involves meticulous dissection of the aberrant blood supply to the kidneys, and mobilization of the isthmus for adequate retrorenal aortic exposure. In six of the seven patients, the grafts were placed posterior to the isthmus. There were no deaths, and there were no complications related to the presence of the horseshoe kidney. In three of the seven patients, hypertension improved. Patients with horseshoe kidney and aortic disease may be safely operated upon without damage to the kidney. IVP and selective angiography are essential to provide preoperative information.
Adult↗
In vivo radionuclide imaging to detect intestinal necrosis.
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Animals↗