Evaluation of Program 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 program is more accurate than the anesthesia tape (Anästhesie-Lineal). For this study 1000 patients are required to collect anonymized data (length, weight, age, anesthesia material used during anesthesia) for achieving a power of 80% during statistical analysis. The main hypothesis ist that the program has a better accuracy than the anesthesia tape (Anästhesie-Lineal).

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 anesthesia 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-anesthetic 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 anesthesia has no influence on the daily anesthesia 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. 1000 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 anesthesia material (endotracheal tube, laryngeal mask, oropharyngeal mask and face mask). Both tools (program and anesthesia tape [Anästhesie-Lineal]) will be compared with each other regarding primary and secondary outcome parameters.

Official Title
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Evaluation of a Program for Length Based Weight Estimation in Comparison to the Anesthesia Tape (Anästhesie-Lineal)

Conditions
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Length-based Weight Estimation, Body Weights and Measures

Intervention / Treatment
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* Other: Device: Accuracy of a program and the anesthesia tape (Anästhesie-Lineal)


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 anesthesia with intubation or laryngeal mask 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: Device: Accuracy of a program and the anesthesia tape (Anästhesie-Lineal)|Computer based comparison of the two devices based on collected patient data|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| length-based weight-estimation by program | The by the program estimated bodyweight based on the patient's Body length is investigated regarding the estimations accuracy and cases in the +/- 10% interval | intraoperative | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| length based age estimation | The by the program estimated age based on the patient's body length is investigated regarding the estimations accuracy | intraoperative | 
| size of endotracheal tube | The by the program suggested endotracheal tube based on the patient's Body length is investigated regarding the correctness | intraoperative | 
| size of laryngeal mask | The by the program suggested laryngeal mask based on the patient's Body length is investigated regarding the correctness | intraoperative | 
| size of facemask | The by the program suggested facemask based on the patient's body length is investigated regarding the correctness | intraoperative | 
| size of oropharyngeal tube | The by the program suggested oropharyngeal tube based on the patient's Body length is investigated regarding the correctness | intraoperative | 

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