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Objectives Medication errors in hospitalized children represent a serious health problem; these include dosing errors, administration route errors, errors in identifying the patient and more. The rates of medication errors are considered higher in children compared to adults because, among other reasons, the pediatric dose is calculated according to the child's weight or body surface. This study aims to examine the incidence of pediatric medication dosing errors and the impact of an intervention program in reducing these errors and related adverse effects in a cohort of hospitalized children at an otolaryngology department. Methods We reviewed 100 computerized medical reports of hospitalized children from 2017 to 2018, including 50 inpatient admissions prior to the implementation of an intervention program and 50 inpatient admissions following its implementation. Data includes demographic variables, number of hospitalization days, rates and types of medication errors and adverse effects. We have analyzed the rates of medication errors before and after implementation of an interventional program. Results The average patient age was 5.26 and the demographic features of the two groups were similar. We identified 23.2% medication dosing errors in medications prescribed to the patients (n = 33) and 17.6% medication dosing errors in total medications administered to the patients (n = 64) in the pre-intervention group (PREG). In the post-intervention group (POSG) we identified 10.6% medication dosing errors in prescriptions prescribed to the patients (n = 12) and 7% medication dosing errors in the total drugs administered to the patients (n = 21). The intervention program resulted in 46% reduction of prescription errors; No adverse effects were recorded. Conclusions Medication dosing errors among hospitalized children are common, although rates of adverse events are low. The suggested intervention program demonstrates a significant reduction in the rates of these errors, thus improving the safety of hospitalized children.

Objective Laryngotracheal damage is a well-described complication of endotracheal intubation and animal models are essential for studying the underlying cellular injury cascade. This novel rat model is based on transoral intubation and aims to simulate the common clinical scenario of tube-related airway damage. Methods Prospective randomized control pilot study. 28 male Sprague-Dawley were randomly assigned into three groups: control, 3-h' intubation and 6-h' intubation. The animals were then euthanized and their laryngotracheal complexes sent for histological analysis. Epithelial damage, mucosal thickness and mucosal gland hypertrophy were reviewed. Results Total of 13 control animals and 15 intubated animals. 10 intubated animals survived the study protocol. Loss of epithelial surface architecture including damage to the microscopic ciliary mechanism was a common feature amongst all intubated animals. Average mucosal thickness of the larynx (including vocal cords and subglottic area) was 143 ± 88 μm for control rats, 315 ± 101 μm for rats intubated 3 h and 574 ± 174 μm for rats intubated 6 h .This was a statistically significant difference. Average mucosal gland hypertrophy in the laryngeal subsite was 0.41 ± 0.5 in control rats, 1.4 ± 0.5 in rats intubated 3 h and 2.0 ± 0.0 for rats intubated 6 h (statistically significant difference). There was a clear difference between three and 6 h of intubation with poorer mucosal injury parameters for longer intubation. Conclusions We describe a novel rat-based animal model for simulating airway mucosal damage following transoral intubation. This animal model is easy to carry out, reproducible and involves containable animal mortality rates.

Tracheal mucosal damage is a well-known complication of endo-tracheal intubation and animal models are essential for studying the underlying cellular injury cascade. The novel rat model described here is based on retrograde intubation via tracheotomy and suture fixation of the tube. It aims to simulate the common clinical scenario of tube-related airway damage due to long term intubation.Prospective randomized control pilot study.Male Sprague-Dawley were randomly assigned into two groups: control (no intubation, n = 10), one week of intubation (n = 13). The animals were then euthanized and the trachea was sent for histological analysis. Epithelial damage, mucosal thickness, mucosal gland hypertrophy and fibrosis were reviewed.Intubation procedure survival rate was 84.6% (11/13) and 100% in the control (10/10). The damaged ciliary mechanism was a common finding in the intubated group compared to the preserved normal ciliary architecture in almost all control rats. Average tracheal mucosal thickness was 119.0 ± 21.8 μm for the control group and 254.6 ± 22.8 μm for the intubated group, (p 0.001). The ciliary damage score was 1.00 ± 0.02 in the intubated group, and 0 ± 0.02 in the control group. (p 0.001). The (objective) average total tracheal mucosal gland area was 19,530 ± 24,606 in the intubated group and 10,031 ± 23,461 in the control group (p 0,05). Collagen deposition seems higher in the intubated trachea compared to the control.We describe a novel rat-based animal model for simulating tracheal mucosal damage following long term intubation. This animal model is easy to carry out, reproducible and involves containable animal mortality rates.I.