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  • 1
    Digitale Medien
    Digitale Medien
    Springer
    International archives of occupational and environmental health 73 (2000), S. S46 
    ISSN: 1432-1246
    Schlagwort(e): Key words Intensive care units ; Pediatric ; Nursing staff hospital ; Stress ; psychological ; Hydrocortisone ; secretion ; Psychomental stress
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract  Background: Psychomental stress is a major source of illness and reduced productivity. Data objectifying physiological stress responses are scarce. We studied salivary cortisol levels in a highly stressful environment, the pediatric critical care unit. The aim was to identify targets for organizational changes, to implement these changes and to assess their impact on cortisol levels. Design: Repeated measurements observational cohort study (before and after intervention). Subjects: 84 nurses working in two independent teams (A and B) in a 19 bed pediatric intensive care unit. Between study periods team A experienced a major exchange of experienced staff while the turnover rate in team B remained average. Measurements and interventions: Salivary cortisol samples were collected every 2 h and after stressful events. Nurses in study period I showed elevated cortisol levels at the beginning of the late shift, interpreted as an anticipatory stress reaction. To ease conditions during the early part of the late shift (conflicting tasks, noise and crowding), we postponed the afternoon ward round, limited non-urgent procedures and introduced a change in visiting hours. The early shift, which was not affected by the intervention, served as control. Main results: Both crude and adjusted analysis revealed a decrease of cortisol levels at the beginning of the late shift in team B (p = 0.0009), but not in team A (p = 0.464). The control situation showed no difference between teams and study periods. Interpretation: We demonstrated reduced cortisol secretions in one team following organizational changes, which was probably overridden by the disruption of social coherence in the second team.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    Springer
    Intensive care medicine 26 (2000), S. 942-949 
    ISSN: 1432-1238
    Schlagwort(e): Key words Ventilator-associated pneumonia ; Cardiac surgery ; Children ; Pediatric intensive care ; Complications ; Extubation
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract Objective: This study was undertaken to determine the delay of extubation attributable to ventilator-associated pneumonia (VAP) in comparison to other complications and complexity of surgery after repair of congenital heart lesions in neonates and children.¶Methods: Cohort study in a pediatric intensive care unit of a tertiary referral center. All patients who had cardiac operations during a 22-month period and who survived surgery were eligible (n = 272, median age 1.3 years). Primary outcome was time to successful extubation. Primary variable of interest was VAP. Surgical procedures were classified according to complexity. Cox proportional hazards models were calculated to adjust for confounding. Potential confounders comprised other known risk factors for delayed extubation.¶Results: Median time to extubation was 3 days. VAP occurred in 26 patients (9.6 %). The rate of VAP was not associated with complexity of surgery (P = 0.22), or cardiopulmonary bypass (P = 0.23). The adjusted analysis revealed as further factors associated with delayed extubation: other respiratory complications (n = 28, chylothorax, airway stenosis, diaphragm paresis), prolonged inotropic support (n = 48, 17.6 %), and the need for secondary surgery (n = 51, 18.8 %; e. g., re-operation, secondary closure of thorax). Older age promoted early extubation. The median delay of extubation attributable to VAP was 3.7 days (hazards ratio HR = 0.29, 95 % CI 0.18–0.49), exceeding the effect size of secondary surgery (HR = 0.48) and other respiratory complications (HR = 0.50).¶Conclusion: VAP accounts for a major delay of extubation in pediatric cardiac surgery.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 3
    Digitale Medien
    Digitale Medien
    Springer
    Intensive care medicine 26 (2000), S. 959-966 
    ISSN: 1432-1238
    Schlagwort(e): Key words Antibiotics Utilisation ; Pediatric intensive care ; Ventilator-associated pneumonia
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract Objective: Minimizing unwarranted prescription of antibiotics remains an important objective. Because of the heterogeneity between units regarding patient mix and other characteristics, site-specific targets for reduction must be identified. Here we present a model to address the issue by means of an observational cohort study.¶Setting: A tertiary, multidisciplinary, neonatal, and pediatric intensive care unit of a university teaching hospital.¶Patients: All newborns and children present in the unit (n = 456) between September 1998 and March 1999. Reasons for admission included postoperative care after cardiac surgery, major neonatal or pediatric surgery, severe trauma, and medical conditions requiring critical care.¶Methods: Daily recording of antibiotics given and of indications for initiation. After discontinuation, each treatment episode was assessed as to the presence or absence of infection.¶Results: Of the 456 patients 258 (56.6 %) received systemic antibiotics, amounting to 1815 exposure days (54.6 %) during 3322 hospitalization days. Of these, 512 (28 %) were prescribed as prophylaxis and 1303 for suspected infection. Treatment for suspected ventilator-associated pneumonia accounted for 616 (47 %) of 1303 treatment days and suspected sepsis for 255 days (20 %). Patients were classified as having no infection or viral infection during 552 (40 %) treatment days. The average weekly exposure rate in the unit varied considerably during the 29-week study period (range: 40–77/100 hospitalization days). Patient characteristics did not explain this variation.¶Conclusion: In this unit the largest reduction in antibiotic treatment would result from measures assisting suspected ventilator-associated pneumonia to be ruled out and from curtailing extended prophylaxis.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 4
    Digitale Medien
    Digitale Medien
    Springer
    Intensive care medicine 26 (2000), S. 776-779 
    ISSN: 1432-1238
    Schlagwort(e): Key words Syringe pump ; Infusion line ; Infusion tube ; Compliance ; Drug delivery
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract Objective: To determine whether infusion line compliance contributes to irregular drug delivery during vertical displacement of syringe pumps.¶Design: Five different commercially available infusion lines were studied at infusion rates of 0.5, 1.0, and 1.5 ml/h. Zero drug delivery time was measured after acute line loop formation (70 cm) using an electronic balance. Compliance of each infusion line was calculated using a pressure transducer and measurement of the occlusion release bolus at 300 mmHg occlusion pressure. Finally, the influence of infusion line compliance on drug delivery during acute lowering of the syringe pump was studied using low- and high-compliance infusion lines.¶Results: Acute line loop formation resulted in zero drug delivery time from 5.1 ± 1.5 to 44.0 ± 6.8 s at flow rates of 0.5 ml/h. Increased flow rates significantly reduced loop-induced flow variability. A close correlation was found between zero drug delivery time and calculated infusion line compliance at 0.5 ml/h (linear regression R 2 = 0.79). Lowering of the syringe pump 50 cm prolonged zero drug delivery time from 295.8 ± 20.7 s with the low-compliance tube to 463.3 ± 24.0 s with the high-compliance infusion line.¶Conclusions: Infusion line compliance contributes to irregular drug delivery associated with vertical displacement of syringe pumps. Siphoning of the infusion line during patient care should be avoided, and flow rates of 1 ml/h or higher are recommended. Low-compliance infusion lines are indicated whenever highly short-acting vasoactive drugs at low delivery rates are administered.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 5
    Digitale Medien
    Digitale Medien
    Springer
    Intensive care medicine 26 (2000), S. 105-108 
    ISSN: 1432-1238
    Schlagwort(e): Key words Glucocorticoid deficiency ; Adrenal malformation ; Isolated ACTH deficiency
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract An 18-month-old male infant presented with hypoglycemic coma and clinical signs of bronchopneumonia. He was suspected of suffering from septic shock. The patient progressed to irreversible multiple organ failure before the diagnosis of adrenal crisis was established. Plasma levels of ACTH and cortisol remained undetectable. Renin and aldosterone were normal. An autopsy failed to demonstrate any adrenal gland cortical tissue. Immunohistochemical staining demonstrated the presence of all pituitary hormones except ACTH, establishing the diagnosis of isolated ACTH deficiency. Intensive care clinicians should consider adrenal crisis in non-diabetic children with hypoglycemia and rapid circulatory deterioration.
    Materialart: Digitale Medien
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