Evaluation of an Algorithm for Length Based Weight Estimation

Study Overview
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Brief Summary
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The purpose of this prospective single center study is to investigate if a developed algorithm is more accurate than the pediatric emergency tape (Alpha 1 Werbedesign e.K., Falkenberg, Germany). For this study 500 patients are required to collect anonymized data (length, weight, age, anaesthesia material used during anaesthesia) for achieving a power of 80% during statistical analysis. The main hypothesis ist that the algorithm has a better accuracy than the pediatric emergency tape (53% are in a +/- 10% interval).

Detailed Description
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This prospective single center study is performed at the university children's hospital zurich. Patients planned for surgery in general anaesthesia with intubation, aged 0 to 16 years and with a body length suitable for the emergency tapes can be included in this study. Patient and parental information is performed during the pre-anaesthetic visit. After written consent the patient will be included. Patient´s length and weight will be measures earliest one day before data collection. Data collection during anaesthesia has no influence on the daily anaesthesia routine and has no impact on patient safety and anaesthesia. Patient's data is made anonymous for further inspection. Data is documented in Microsoft Excel and statistical analysis calculated with SPSS. 500 patients are needed for a power of 80%. Primary outcome parameter is length-based weight estimation, secondary outcome parameters are length-based age estimation and the correctness of recommended anaesthesia material (endotracheal tube, laryngeal mask, oropharyngeal mask and face mask). Both tools (algorithm and pediatric emergency tape) will be compared with eachother regarding primary and secondary outcome parameters.

Official Title
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Evaluation of an Algorithm for Length Based Weight Estimation in Comparison to Already Known Devices Like the Pediatric Emergency Tape (Pädiatrisches Notfalllineal - PNL)

Conditions
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Length Based Weight Estimation

Intervention / Treatment
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* Other: Accuracy of an algorithm and the pediatric emergency tape.


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: body length suitable with the investigated emergency tapes all patients aged 0 -16 years receiving general anaesthesia with intubation Exclusion Criteria: Already included in this study once missing patient or parental consent

Ages Eligible for Study
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Minimum Age: 1 Day
Maximum Age: 16 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Arms and Interventions

| Intervention/Treatment |
| --- |
|Other: Accuracy of an algorithm and the pediatric emergency tape.|No intervention|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| length based weight estimation by algorithm |  | during anaesthesia | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| length based age estimation |  | during anaesthesia | 
| size of endotracheal tube |  | during anaesthesia | 
| size of laryngeal mask |  | during anaesthesia | 
| size of facemask |  | during anaesthesia | 
| size of oropharyngeal tube |  | during anaesthesia | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Broselow Tape, Weight estimation, Patient safety