1. Fault Tree Analysis Volumetric Airflow Gauge Failure Modes Administrator Error Failure to create seal Electrical Failure Design/Casing Failure Improper Administration Incorrect Vol. reading Regurgitation Into Device Incooperation Improper Training A Patient Complications B One-way flow valve/gauge Block/malfunc. Group Members Justin Kiswardy Mike Nilo Matt Chakan Failure to use device Improper Device Attachment Inaccurate Volumetric Display Over/under inflation Increased expiratory Air pressure Lung Tissue Damage

2. Design Failure-A A Gasket/Seal Failure Water/Liquid enters housing Poor Material Selection Tube cracking Environmental Effects Non-standardized Fitting Air Leak Low Marketability Air Leak Inaccurate reading Delayed Resusc. Early heat strain Delayed Resusc. Damage to Circuit Damage to Batteries Microbial Buildup Dimensional Failure Alter/Increase Weight Specs. Loose Elect. Components Shifting of Display

3. Mechanical Failure- B B Mass Flow Device No Functionality LEDs. Lifetime fatigue Unexpected Part malfunc. Electrical Circuit Malfunction Improper Calibration Circuit Break Over/Under Inflation Circuit Break Burnout. Power Indicator/ Metronome Malfunction Display LED Malfunction Inaccurate Display No Display Circuit Break Thermistor Malfunction Tubing Crack Improper Resistance/ Temp. reading Components Enter tubing/ Patients air way Over/under inflation Asphys. of Patient/lung Damage Microcontroller C

4. C Incorrect Proramming Improper Pin Placement No Functionality Inaccurate Display No Functionality Microcontroller Failure-C