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Biomedical subjects

Martin Tönz

Publications and source records attributed to Martin Tönz.

5 recordsLinked to original sources

Parental stress in paediatric day-case surgery.

Day-case surgery involves a considerable amount of stress not only for the children who undergo surgery but also for their parents. In a prospective survey analysis performed in 1995/1996, we identified the following main factors influencing the amount of stress experienced by parents: feelings of insufficient preparation and problems with postoperative pain at home. As a consequence, measures were taken regarding information and pain management, including the creation of an interactive CD-ROM. We then analysed the consequences of our interventions regarding parental stress. In this study we collected the data of all patients who underwent day-case surgery during two additional 13-month periods in 1997/1998 and 1999/2000. The methods of data collection remained unchanged for all three periods and included a questionnaire for the parents. In total, 1,490 questionnaires were analysed. Comparing the three time periods, parents' feelings of being well-informed improved significantly (91% vs. 98% vs. 97%, P < 0.0001). However, the percentage of those experiencing moderate to severe stress did not change substantially (16% vs. 9% vs. 19%, not significant). Analgaesics were given more frequently over the years in a general as well as a prophylactic manner (20% vs. 35% vs. 43%, P < 0.0001). Nevertheless, problems with pain control at home remained unchanged (33% vs. 23% vs. 29%, not significant). Despite considerable efforts to improve information, parental stress did not significantly decrease. It cannot be assessed yet whether wrong information was given or whether a certain degree of stress cannot be prevented. There is some evidence that improvements in coping with pain-related problems might be a promising next step.

Ambulatory Surgical Procedures↗

Oesophageal atresia: what has changed in the last 3 decades?

The aim of the study was to analyse the outcomes of children born with oesophageal atresia over the last 3 decades. The records of 104 patients born between 1973 and 1999 were reviewed retrospectively. To evaluate changes over time, the analysis was done for three consecutive time periods: 1973-79, 1980-89, and 1990-99. Mean birth weight was 2553 g (SD 640), and mean gestational age was 39 weeks (SD 4). Forty-two newborns (40%) had one or more associated congenital malformations, and 30% had associated cardiac malformations. There was no change in incidence of associated anomalies over the three time periods studied. Mortality of patients decreased from 33% to 14% (p = 0.048). There was a significant association between the presence of a major cardiac malformation and survival (survival: 88% vs. 57%, p = 0.004). Analysing the three different time periods separately reveals that cardiac disease was not a significant risk factor in the first period but became significant in the period from 1980-99 (relative risk: 6.76, 95% CI 1.44-31.77). Birth weight was significantly higher in infants who survived (2626 g, SD 642) compared with those who died (2290, SD 570, p = 0.028). This effect, however, is mainly based on the difference during the first period and is lost later. Early and late postoperative complications occurred in 44/102 patients. Strictures developed in 33/91 patients who survived the first month of life (33%). The rate of symptomatic strictures decreased significantly over the three time periods, from 50% to 23% (p = 0.022). In summary, this study shows no significant change in patient characteristics over the last 3 decades, but mortality and postoperative complication rates decreased, and associated cardiac anomalies became the far most important risk factor for mortality.

Abnormalities, Multiple↗

Blinded speech evaluation following pharyngeal flap surgery by speech pathologists and lay people in children with cleft palate.

METHODS: In order to assess intermediate-term speech outcome after pharyngeal flap surgery for velopharyngeal dysfunction in children with cleft palate between 1980 and 1998, their pre- and postoperative speech performance was analyzed in a blinded fashion by speech pathologists and adult lay people. Speech was evaluated on the basis of tape recordings with regard to resonance, intelligibility, articulation, voice and secondary speech disorders. RESULTS: Twenty-three patients could be evaluated. Both lay assessors and speech pathologists noted a significant improvement in speech performance after pharyngeal flap surgery. The percentage of children who improved was 83% (19/23, 95% confidence interval: 0.68-0.98, p = 0.002) when rated by lay people, and 87% (20/23, CI 0.73-1.01, p < 0.0001) when rated by professionals. Rated on a 5-point scale, the mean improvement per speech characteristic was 0.52 +/- 0.32 scale points when judged by lay people, and 0.75 +/- 0.8 points when judged by experts. Experts considered none of the children to have normal speech after surgery. Agreement with regard to outcome between lay people and speech pathologists occurred in 87% of the patients. CONCLUSION: The cranially based pharyngeal flap can improve speech performance in cleft palate children with chronic velopharyngeal insufficiency. However, it cannot be expected that this type of surgery will result in normal speech.

Child↗

Behavioral and functional abnormalities linked with recurrent urinary tract infections in girls.

BACKGROUND: Most girls with recurrent urinary tract infections do not have major urinary tract abnormalities. Recent studies focus on predisposing behavioral and functional abnormalities: infrequent voiding, inadequate fluid intake, stool retention, poor genital hygiene and voiding dysfunction. METHODS: Complete history, bladder and bowel questionnaire, physical examination, voiding-drinking diary, sonography and uroflowmetry were used to assess infrequent voiding, functional stool retention, poor fluid intake, inadequate hygiene, or voiding dysfunction in girls referred for evaluation of three or more symptomatic urinary tract infections (with a first infection at the age of more than 36 months). RESULTS: A total of 141 girls aged 3.9 to 18 years were evaluated between 1996 and 1999; 212 abnormalities were noted in 120 patients: infrequent voiding (isolated, 16; combined with other abnormalities, 47), poor fluid intake (isolated, 10; combined, 50), functional stool retention (isolated, 5; combined, 25), inadequate hygiene or toilet habits (isolated, 3; combined, 24), dysfunctional voiding (isolated, 15; combined, 10), bladder overactivity (isolated, 5; combined, 2). CONCLUSIONS: Most girls referred for evaluation of three or more urinary tract infections have host-mediated predisposing abnormalities: infrequent voiding, poor fluid intake, functional stool retention or voiding dysfunction. Poor genital hygiene and toilet habits were almost always combined with other abnormalities, suggesting that infections are not necessarily related to poor genital hygiene or toilet habits. Two or more indications of predisposing behavior often concur in the same patient.

Adolescent↗