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Biomedical subjects

G M Haase

Publications and source records attributed to G M Haase.

At least 73 records · Page 4Linked to original sources
PubMed1989

Assessing children with chalasia: rule out gastroesophageal reflux.

Chalasia, the regurgitation of gastric contents into the esophagus, is a common problem seen in infancy. In some cases, however, the symptoms can be more complex and extend beyond early infancy. In these infants and children, the pathologic condition of gastroesophageal reflux may exist. It can be a challenge to assess whether these patients require further investigation and treatment. This article outlines the difference between simple chalasia and pathologic gastroesophageal reflux. Information is given that enables the clinician to provide children and families anticipatory guidance regarding the medical workup and management of this problem. In addition, the article provides clinical algorithms to enhance the practitioner's understanding of the decision-making process involved in treating these patients.

Diagnosis, Differential↗
PubMed1988

The importance of acid reflux patterns in neurologically damaged children detected by four-channel esophageal pH monitoring.

Multiple level esophageal pH studies were performed in 23 neurologically damaged infants and children for evaluation of gastroesophageal reflux (GER) and feeding difficulties. The patients were placed in one of three anatomic groups based on the extent of their neurologic injury. Seven children had an acute cerebral injury due to closed head trauma or infections. Six patients with perinatal asphyxia or progressive encephalopathy had a global CNS insult. Eight children with CNS malformations or intraventricular hemorrhage had subacute cerebral damage. Two patients with generalized seizure disorders could not be anatomically classified. In all groups, abnormalities detected at the distal esophagus were also noted at more proximal levels. The middle esophageal probe demonstrated a significant difference (P less than .02) for the longest reflux episode between patients with subacute cerebral injury and those with a global insult. The difference (P less than .02) for the longest reflux episode detected by the distal pH sensor in globally damaged children compared with those with acute cerebral injury also persisted at the middle and proximal esophageal levels. Comparing these same groups, a difference (P less than .02) in acid clearance time and percentage of time pH less than 4 was noted only at the proximal esophageal level. Only the middle and proximal pH probes detected differences (P less than .02) for acid clearance time between patients with both types of cerebral damage and those with a global injury. In infants and children with CNS damage and suspected GER, monitoring the proximal and middle esophageal pH provides important information not detected by the distal esophageal sensor.(ABSTRACT TRUNCATED AT 250 WORDS)

Adolescent↗
PubMed1988

Extended four-channel esophageal pH monitoring: the importance of acid reflux patterns at the middle and proximal levels.

Seventy-one extended multiple-level esophageal pH studies were performed in 61 infants and children suspected of having gastroesophageal reflux (GER). The patients were placed in one of six clinical groups based on their presenting symptomatology. They were classified as "normals" or "refluxers" based on a reflux score calculated from a pediatric modification of the Johnson and DeMeester distal esophageal pH criteria. For the total group, excluding postoperative patients, all differences noted in the distal esophagus between normals and refluxers persisted at the middle and proximal esophageal levels (P less than .001). Significant differences between normal and reflux patients were noted at all levels in the central nervous system damage and postoperative groups. Only the middle esophageal probe detected differences for all variables in the failure to thrive group (P less than .01). In the esophageal atresia group the middle level sensor detected differences in all parameters studied and the proximal sensor noted differences in three of the four parameters (P less than .01). Significant differences between normals and refluxers in the apnea group were best demonstrated in the proximal esophagus. There was no benefit in monitoring the pH of the more proximal esophageal levels in patients with esophagitis. Extended four-channel esophageal pH studies were highly effective in detecting clinically important GER. The patterns of reflux in infants and children vary markedly with the presenting symptoms. Distal esophageal pH monitoring may not demonstrate evidence of GER that would otherwise be detected by the middle and proximal esophageal sensors. This new ambulatory outpatient technique of pH monitoring in young patients suspected of having GER provides advantages over the conventional esophageal pH study.

Child, Preschool↗
PubMed1988

An alternative approach to management of Fogarty catheter disruption associated with endobronchial foreign body extraction.

The Fogarty balloon catheter is a useful adjunct in removing aspirated foreign bodies, but its use is not without risks. A case is presented of Fogarty catheter disruption while attempting to remove a foreign body. The resulting debris in the distal airway was inaccessible to bronchoscopic retrieval. An effective treatment plan is outlined to deal with this problem.

Bronchi↗
PubMed1988

Comparison of totally implanted reservoirs with external catheters as venous access devices in pediatric oncologic patients.

Long term venous access devices have become an important part of the standard care for children with malignant diseases requiring chemotherapy. A prospective nonrandomized study was conducted between January 1985 and January 1987 examining complications, child and parental acceptance and costs between totally implantable venous access devices (ports) and externally exiting catheters. Fifty ports were placed in 49 patients who had a median age of ten years; median implant time was 350 days. Forty-one catheters were placed in 39 patients who had a median age of eight years; median implant time was 365 days. Both devices provided equivalent venous access. Although catheters were initially less expensive, the cost for both devices was comparable by the six month point. Beyond this time, an increasing savings was realized when the port was used. Catheter device complications occurred 14 times compared with seven with ports (p less than 0.02). There were 15 infectious complications with catheters compared with seven with ports (p less than 0.01). Child and parental acceptance questionnaires indicated that the ports were easier to care for and more readily accepted in children older than 11 years than were catheters (p less than 0.001). Totally implanted reservoirs are effective alternatives to external catheters for venous access in children with cancer.

Adolescent↗
PubMed1987

A unique teletransmission system for extended four-channel esophageal pH monitoring in infants and children.

A new computerized telemetry system for extended esophageal pH monitoring is prospectively evaluated and compared with other diagnostic modalities in 38 pediatric patients suspected of having gastroesophageal reflux (GER). Unique circuitry allows connection of 1.5 mm diameter antimony electrodes to a patient-worn digital recorder that continuously samples pH at four levels from pharynx to distal esophagus. Ambulatory studies in a "physiologic" environment are possible and data is teletransmitted by the satellite computer to the central laboratory for analysis. Of 41 studies completed, four were lost to interpretation because of battery, electrode, or computer failure. Thirty-seven studies could be analyzed in five clinical groups: emesis and failure to thrive; status post esophageal atresia repair; apnea/bradycardia; central nervous system damage; and status post antireflux procedure. Pathologic GER was noted 14 times and an antireflux procedure was clinically required in 13 instances. In five cases the upper GI series failed to detect the GER. Twenty-three studies showed no GER, and the clinical symptoms resolved with appropriate medical therapy in 21 cases. The upper GI series demonstrated GER five times in this group. In the nine instances that esophagoscopy/biopsy was employed, the pH study findings were uniformly confirmed. This computerized system provided a technically complete and interpretable study 90% of the time. Based on patient outcome, the extended pH monitoring was 92% accurate in detecting clinically important GER with a sensitivity of 87% and specificity of 93%. The upper GI series demonstrated a 69% accuracy with a 60% sensitivity and 64% specificity (P = .01).(ABSTRACT TRUNCATED AT 250 WORDS)

Child↗
PubMed1985

Nephroblastomatosis and Wilms' tumor. Clinical experience and management of seven patients.

Nephroblastomatosis is an uncommon abnormality believed to represent the persistence of embryonal renal tissue. Its association with simultaneous or eventual Wilms' tumor has led to the speculation that it is a premalignant lesion. The accumulated clinical experience with this process and its progression to Wilms' tumor in three of seven individuals is discussed. It is concluded that conservative tissue sparing surgery, chemotherapy, and ultrasonographic follow-up are the approaches most appropriate for the management of these difficult patients.

Adolescent↗
PubMed1984

Surgery of acquired lobar emphysema in the neonate.

Surgical treatment for pulmonary interstitial emphysema (PIE) has been reported with increasing frequency. We have done pulmonary lobectomies in 14 neonates with the localized form of PIE. This type of treatment was successful in 11 patients. Two patients expired in the hospital and one showed no improvement. Another six very compromised patients with diffuse PIE were treated during the same period with multiple visceral pleurotomies. Only one survived. Infants with diffuse PIE are usually poor surgical candidates, while those with acquired lobar emphysema (ALE) have been treated successfully with lobectomies.

Female↗
PubMed1984

Surgical complications in Henoch-Schönlein Purpura.

Intestinal intussusception, perforation, and infarction constitute the major surgical complications in Henoch-Schönlein Purpura (HSP). This report reviews the surgical experience in 13 patients of the 58 treated for HSP at our institution in the past 10 years. In addition, the reported surgical cases of anaphylactoid purpura in the pediatric age are analyzed. Attention is focused on observations not previously emphasized in regard to the timing of the surgical event in relation to the cutaneous manifestation of HSP.

Child↗
PubMed1982

Rhabdomyosarcoma of the biliary tree: the case for aggressive surgery.

Embryonal rhabdomyosarcoma of the bile ducts is associated with a poor prognosis because complete resection rarely is considered possible. We reviewed the literature and report our experience with the management of 3 consecutive patients. The patients were 1, 4, and 9 yr old at presentation, and had jaundice, cachexia, and an abdominal mass. The tumor arose in the common hepatic duct in 2 patients, and in the left hepatic duct in the other. All had tumor extension into both lobes of the liver and residual disease was noted after resection. Two patients were given tumor bed irradiation and all received multiple-drug chemotherapy. Two patients are alive, jaundice free, and with no evidence of disease at 9 mo and 14 yr follow-up. The other patient was a long-term survivor, but developed local recurrent tumor after cessation of chemotherapy and expired 33 mo after diagnosis. The traditional anatomic criteria of hepatic tumor resectability may not apply to botryoid sarcoma of the bile ducts. Aggressive surgery combined with the new adjuvant therapies appears to provide the best chance for a longer survival.

Antineoplastic Agents↗
PubMed1982

Abdominal scintigraphy for ectopic gastric mucosa: a retrospective analysis of 143 studies.

A retrospective analysis of 143 studies of abdominal scintigraphy with technetium-99m pertechnetate for the diagnosis of ectopic gastric mucosa (usually located in Meckel diverticulum) was undertaken. The rectilinear scanner was used for 57 studies and the gamma camera for 86. The final diagnosis, at laparotomy or after clinical and laboratory investigation with long-term clinical follow-up, was correlated to the interpretation of the scintigrams. Of 57 rectilinear scans, five were true positive, 46 true negative, two false positive, and four false negative. Of the 86 camera studies 10 were true positive, 74 true negative, one false negative, and one patient showed large bowel activity (positive atypical study). The results of this analysis indicate the value of the properly performed and interpreted abdominal pertechnetate scintigraphy in the diagnosis of (bleeding) ectopic gastric mucosa; it was also shown that the sensitivity and the specificity of this test have improved since the introduction of the gamma camera and the standardization of the procedure.

Abdomen↗
PubMed1981

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↗
PubMed1981

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↗
PubMed1979

Glucagon in experimental intussusception.

A standard type of ileocolic intussusception was produced in 69 puppies and the effect of glucagon on the hydrostatic reduction of the intussusceptions evaluated in a prospective, double-blind study. The reductions were attempted at intervals varying from 18 to 60 hr following the production of the intussusceptions. The overall reduction rate was 70% and there was no statistical difference in this rate between the animals receiving glucagon and those receiving placebos. None of the gangrenous intussusceptions were reducible with the hydrostatic pressure technique, irrespective of whether glucagon was used or not. A further evaluation was made of those animals in whom successful reductions were accomplished by the hydrostatic pressure method. Glucagon did result in significantly easier reductions, and an earlier return of normal vascular supply as measured by color and by arterial pulsations as compared to the control group.

Animals↗
PubMed1979

Hyperparathyroidism following parathyroid autotransplantation.

A patient with primary hyperparathyroidism underwent cervical exploration and hemithyroidectomy. Only one normal parthyroid gland was found and was removed. Hypercalcemia persisted and subsequent arteriography localized a large mediastinal adenoma which was excised. Parathyroid autotransplantation of a small part of this tissue was performed and the patient was well for over a year. He again became markedly hypercalcemic and graft-dependent elevation of parathromone levels was demonstrated. Autograft resection resulted in normocalcemia. Nineteen months later hypercalcemia and elevated parathormone levels prompted re-exploration of the graft site and another enlarged implant was removed. This restored normocalcemia and normal parathromone levels. Parathyroid adenomatous tissue has the potential for autonomous hyperfunction, and caution must be exercised in its use in autotransplantation.

Humans↗
PubMed1978

Partial splenectomy in staging laparotomy for Hodgkin's disease: an alternative approach.

Partial splenectomy, with resection of the lower one-fourth to one-third spleen, was performed in 10 children with Hodgkin's disease as part of an otherwise standard staging laparotomy. The technique proved to be safe and practical, with no postoperative complications. No evidence to date indicates that splenic involvement was missed, and all the children have thus far continued to do well, with no deaths from either underlying disease or postsplenectomy sepsis. The procedure is undergoing a prospective clinical trial in an effort to determine whether or not it is comparable from a diagnostic point of view to total splenectomy. Available data indicate that the risk of missing intraabdominal disease in a staging laparotomy with a partial splenectomy is quite low. Such a procedure should eliminate the substantial risk of postsplenectomy sepsis in such children.

Adolescent↗