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Biomedical subjects

J F Fitzgerald

Publications and source records attributed to J F Fitzgerald.

At least 19 recordsLinked to original sources

The dental attitudes, knowledge and health practices of patients with Juvenile Idiopathic Arthritis.

AIM: To investigate the dental attitudes, knowledge and dental health practices of children and adults with a previous diagnosis of Juvenile Idiopathic Arthritis (JIA). STUDY DESIGN: A self-completion questionnaire. METHODS: Ninety-one children and 82 adults with JIA were age and gender matched with 152 healthy controls. For those below the age of 16 years, the parents' attitude, knowledge and dental health practices were investigated by the questionnaire. The adult subjects and controls completed an identical questionnaire assessing their own attitude, knowledge and dental health practices. RESULTS: Response rates of 84% and 75% were achieved for the subject and controls respectively. Both groups responded similarly to questions assessing perception of different medical conditions. The majority of respondents thought leukaemia was a very serious condition. Twenty-seven percent of subjects and 34% of controls felt dental decay was "slightly or not serious". Ninety percent of subjects and 93% of controls knew having sweet snacks during the day would harm teeth, but fewer were sure that eating sweet foods at mealtimes only would help reduce decay. The majority of respondents (63% and 56% respectively) did not know whether children should receive fluoride tablets but the majority of subjects in both groups had attended a dentist within the last year. STATISTICS: Descriptive analyses and chi-squared analysis were undertaken. A p-value of < or =0.01 was taken as strong evidence of a difference between groups. CONCLUSION: The perception of health and illness by both groups was appropriate. The questions investigating dental knowledge revealed understanding of the basic messages of prevention of dental disease, but finer detail appeared less well understood. Responses concerning dental health confirmed positive attitudes towards good dental health habits. The benefits of brushing with fluoride toothpaste were known, and the majority toothbrushed daily and received dental care within the previous year.

Adolescent↗

Is esophagogastroduodenoscopy necessary in all caustic ingestions?

BACKGROUND: It is unclear whether symptoms alone can identify patients with caustic ingestion who will benefit from esophagogastroduodenoscopy (EGD). The published data are contradictory. The purpose of the current study was to determine the relationship between initial symptoms and EGD findings in patients with caustic ingestion. METHODS: Chart review of all caustic ingestions who underwent EGD during a 4-year period (December 1993 through November 1997). RESULTS: Twenty-eight patients (15 girls; mean age, 2.7 years (range, 0.92-13.33) underwent EGD after caustic ingestion. Fourteen percent (4/28) of patients were asymptomatic, and findings on endoscopy were normal. Another 57% (16/28) had normal endoscopic findings, although all were symptomatic. Twenty-nine percent (8/28) of patients had esophageal injury on EGD, and all were symptomatic. Esophageal injury was graded as 1 (mucosal erythema), 2 (superficial burns; noncircumferential) or 3 (deep burns; circumferential). The injury was grade 1 in three of eight patients and grade 2 in two; all had one symptom each. Grade 3 injury was found in three of eight patients: two had two symptoms (drooling and vomiting, drooling and stridor), and one had one symptom (dysphagia). All patients with grade 3 injury subsequently underwent esophageal dilations. Follow-up information was secured for two of the three patients with grade 1 injury and both patients with grade 2 injury at 34.3 months (range, 24-50) after the ingestion, and all were asymptomatic. Of the 20 patients with absence of esophageal mucosal damage, follow-up data were available for 15 patients at 37.2 months (range, 7-63) after the event and all were well. CONCLUSIONS: All patients with clinically significant injury (grades 2 and 3) were symptomatic at initial assessment. No single symptom or combination of symptoms could identify all patients with esophageal injury. All asymptomatic patients had normal findings on endoscopic examinations. Esophagogastroduodenoscopy seems unnecessary in asymptomatic patients with alleged caustic ingestion. A larger, prospective study would be necessary to unequivocally answer this clinically important question.

Adolescent↗

Experience with juvenile polyps in North American children: the need for pancolonoscopy.

We report a recent experience with juvenile polyps (JP) in a large cohort of North American children to determine if a pancolonoscopy (PC) is needed in all children with suspected polyps. We reviewed hospital charts of all patients with JP seen over a 9-yr period (January, 1990-October, 1998). A total of 331 JP were encountered during 195 procedures in 184 patients (64% males, 88% white, mean age 5.93 yr [range 0.42-15.5 yr], median age 4.84 yr). Painless rectal bleeding was the commonest symptom. PC was performed in 42% (82/195) of procedures, and 177 JP were encountered: 54% (97/177) were in the rectosigmoid colon, 14% (24/177) were in the descending colon, and 32% (56/177) were proximal to the splenic flexure (i.e., proximal polyps). Overall, proximal polyps were seen in 37% (31/82) of PC. Only proximal polyps were noted in 12% (10/82) of PC. Five patients were re-endoscoped after an initial limited examination because of continuing symptoms from proximal polyps. All but one of the polyps had typical features of a JP on histological examination. Though most JP are located in the left colon, a PC should be the initial procedure because: 1) 37% of PC revealed proximal polyps, 2) 32% of polyps were located proximal to splenic flexure, 3) persistence of symptoms from missed proximal polyp(s) necessitates a repeat study with attendant risks, and 4) there is a possibility of malignant transformation in an unidentified JP.

Adenomatous Polyposis Coli↗

Lack of interaction between levofloxacin and oxycodone: pharmacokinetics and drug disposition.

Previous studies have demonstrated a significant reduction in the oral bioavailability of trovafloxacin and ciprofloxacin when administered concomitantly with an intravenous opiate such as morphine. This decrease in absorption results in a 36% and 50% lower AUC for trovafloxacin and ciprofloxacin, respectively, which could cause clinical failures. The authors investigated the possibility of a similar interaction between oxycodone and levofloxacin. Eight healthy volunteers were randomized in an open-label, two-way crossover study to receive oxycodone, 5 mg p.o. Q4H, and levofloxacin, 500 mg p.o. 1 hour after starting the oxycodone or levofloxacin 500 mg p.o. alone. Blood samples were drawn at 0, 0.5, 1, 1.5, 2, 3, 4, 6, 8, 12, 18, and 24 hours for Cmax, tmax, and AUC determinations. There was not a significant difference (p > 0.05) in AUC (48.59 +/- 8.52 vs. 49.9 +/- 9.93), Cmax (7.73 +/- 2.6 vs. 6.6 +/- 2.0), and tmax (1.1 +/- 0.6 vs. 1.6 +/- 1.1) for levofloxacin versus levofloxacin/oxycodone regimens. It was concluded that oral oxycodone and levofloxacin can be administered concomitantly without a significant decrease in AUC, Cmax, or tmax.

Adult↗

HSP--without P?

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Child, Preschool↗

Direct measurement of pancreatic enzymes after stimulation with secretin versus secretin plus cholecystokinin.

BACKGROUND: Direct measurement of pancreatic enzymes after administration of pancreatic secretagogues is the gold standard in the assessment of exocrine pancreatic function. Recent experience at the authors' institution showed that endoscopic collection of pancreatic secretions 5, 10, and 15 minutes after intravenous administration of secretin is useful in screening for pancreatic insufficiency. Concomitant administration of intravenous cholecystokinin has been a subject of debate. The purpose of this study was to compare pancreatic enzyme levels after administration of secretin versus secretin plus cholecystokinin and to validate the timing of collection of duodenal fluid. METHODS: A prospective, randomized, double-blind study was conducted from September 1997 through September 1998. Patients scheduled for pancreatic enzyme sampling were randomly assigned to receive intravenous secretin (2 U/kg) plus placebo (group 1) or intravenous secretin (2 U/kg) plus cholecystokinin (0.02 microg/kg [Group 2]). Duodenal fluid was collected 5, 10, and 15 minutes later and placed in dry ice. Samples were measured for the levels of trypsin, amylase, lipase, and chymotrypsin. RESULTS: Twenty patients were assigned to each group. The age range was similar in both groups: 12 months to 16 years, 8 months in group 1 (median, 2.1 years) and 15 months to 13 years, 7 months in group 2 (median, 2.5 years). Group 2 had a greater number of patients with all four enzymes at normal levels during at least one of the time points, 75% versus 50% (P = 0.102). The difference in enzyme levels at the 5-, 10-, and 15-minute collections was statistically significant. For all four enzymes in both groups, values varied from highest to lowest with time (P = 0.0001). The enzyme levels at 10 minutes were close to the enzyme levels at 5 minutes; the lowest values occurred at 15 minutes. CONCLUSIONS: Higher pancreatic enzyme levels were obtained after administration of secretin plus cholecystokinin, although the trend did not reach statistical significance. Pancreatic enzyme levels are highest at 5 and 10 minutes, indicating that collections of duodenal fluid should be completed within 10 minutes of the administration of the secretagogues.

Adolescent↗

Recurrent abdominal pain in children--a retrospective study of outcome in a group referred to a pediatric gastroenterology practice.

Recurrent abdominal pain (RAP) affects a significant number of children each year. We reviewed our experience over a 2-year period to determine the outcome of patients who were referred for pediatric gastroenterology consultation. We identified 356 patients, 149 (42%) male and 207 (58%) female. All patients underwent a thorough interview and complete physical examination. Patients suspected of having irritable bowel syndrome (IBS) were treated as such without further initial evaluation. Others underwent an initial blood and urine evaluation. When these initial screening studies were negative, additional studies were performed including abdominal ultrasonography, radiography, and/or endoscopy of the upper gastrointestinal (GI) tract if the history suggested a possible diagnosis that could be excluded or confirmed by such tests. There was no identifiable diagnosis in 43.5% of the patients studied. IBS was diagnosed in 25.8% of all patients. Constipation was diagnosed in 3.7%. Miscellaneous causes, including GI mucosal lesions, and renal and pancreatic disorders were found in an additional 27% of patients. In a follow-up survey, more than 70% of the treated respondents were improved (i.e., their RAP had resolved or was markedly improved). We conclude that most children with RAP have a functional disorder. Patients with an organic cause for pain can be identified and treated in a cost-effective manner with carefully planned evaluation.

Abdominal Pain↗

Clinical applications of technetium Tc 99m hexamethyl propylene amine oxime leukocyte scan in children with inflammatory bowel disease.

BACKGROUND: Labeled leukocyte imaging is a helpful diagnostic tool in the detection of inflammation and sepsis. The technetium Tc 99m hexamethyl propylene amine oxime (99mTc HMPAO)-labeled leukocyte scan has been found to be more sensitive than the Indium-111 labeled leukocyte scan in detecting inflammatory bowel disease, with reported sensitivities of 95% to 100%. Experience with the 99mTc HMPAO-labeled leukocyte scan was examined and its clinical applications evaluated in the immediate treatment of patients with inflammatory bowel disease. METHODS: A retrospective chart review was undertaken that included pediatric patients who underwent 99mTc HMPAO-labeled leukocyte scan at the James Whitcomb Riley Hospital for Children. The disease activity of patients with inflammatory bowel disease was assessed. The leukocyte scan was performed according to the manufacturer's specifications, and images were obtained 30 minutes and 2 hours after administration of the radiopharmaceutical. RESULTS: During the period of July 1996 through November 1997, 41 scans were performed in 35 patients. Twenty-nine patients had histologically proven inflammatory bowel disease: 24 with Crohn's disease, 4 with ulcerative colitis, and 1 with indeterminate colitis. Active inflammatory bowel disease was suspected in 24 patients when the leukocyte scan was performed. Twenty of the 24 patients (83% sensitivity) had abnormal findings in leukocyte scans that prompted more aggressive management in 15 (75%). Six of the 15 who were receiving maximum medical therapy underwent surgical resection of severely affected bowel segments, and medical treatment was intensified in the other 9. The remaining 5 patients were receiving optimal medical therapy, instituted at their recent visit, and did not require further medication adjustments. Four of the 24 patients with active inflammatory bowel disease had normal leukocyte scans (17% false-negative rate), 3 of whom were receiving corticosteroid therapy at the time the scans were performed. All of the 11 patients in whom inflammatory bowel disease was in remission and 6 patients who did not have inflammatory bowel disease had normal findings in leukocyte scans (100% specificity). CONCLUSIONS: Although a tissue diagnosis is still recommended, obtained during upper and lower gastrointestinal endoscopic examinations, and contrast radiography of the small bowel for the initial work-up of patients with suspected inflammatory bowel disease, the 99mTc HMPAO-labeled leukocyte scan is a safe and useful diagnostic adjunct for subsequent evaluation of patients known to have inflammatory bowel disease. The results of 99mTc HMPAO-labeled leukocyte scans directly influenced treatment of 75% of the study patients with active inflammatory bowel disease, which included the decision to refer patients for surgical intervention.

Adolescent↗

Disaccharidase activities in children: normal values and comparison based on symptoms and histologic changes.

BACKGROUND: The relationship between symptoms, intestinal mucosal histology, and disaccharidase activities is not well defined. An analysis of disaccharidase activities was performed in children grouped by age, symptoms, and intestinal mucosal histology and normal values established. METHODS: Disaccharidase activities and histology of 246 endoscopically obtained duodenal biopsies in 232 patients (121 girls; age range, 0.08-17 years; mean, 5.9 years) in a 3-year period were reviewed. Patients were divided into two groups based on absence (group 1; n = 142) or presence (group 2; n = 90) of diarrhea and were subdivided by age into, less than 24 months of age and 24 months of age or more. Histologic changes within groups were classified as (A) normal, (B) mild, or (C) moderate to severe based on villus height abnormalities. A questionnaire was sent to 34 patients with hypolactasia to assess the efficacy of lactose avoidance and/or lactase supplementation. RESULTS: All group 1 patients had normal findings in analysis of mucosal specimens, and their disaccharidase activities showed normal values because they had no diarrhea. The geometric means (95% confidence interval) in children aged less than 24 months are (in micromoles of substrate hydrolyzed per minute at 37 degrees C per gram protein) (units [U]) lactase, 36.7 (13.4-100.4); maltase, 178.5 (88.9-356.3); palatinase, 12.7 (3.8-41.5); and sucrase 60.0 (24.0-148.1). In children 24 months of age or more, the values are 23.2 (3.9-108.1), 167.6 (78.8-355.9), 12.7 (4.9-32.9), and 51.0 (20.5-126.0), respectively. Only lactase activity decreased with age (p < 0.05). No differences in disaccharidase activities were noted in patients with and without diarrhea if the mucosal histology was normal (group 1A vs. 2A). In patients with diarrhea, values were commensurate with the degree of mucosal injury, especially in the older group. Twenty-two of 27 patients (81%) who responded to the questionnaire had benefited from lactase supplementation and/or lactose avoidance. CONCLUSIONS: We have established normal values for disaccharidase activities in the pediatric population. Although the disaccharidase activities correlate more with degree of intestinal mucosal injury than with symptoms, their activities are difficult to predict accurately based on these criteria. If required, disaccharidase activities should be measured biochemically.

Adolescent↗