Commit 2d1e8e22 authored by Jeff Webb's avatar Jeff Webb Committed by Aaron Bray
Browse files

Added a bag valve mask photo.

parent d2cba5a9
......@@ -6,6 +6,13 @@ Bag Valve Mask Methodology {#BagValveMaskMethodology}
The bag valve mask (also known as Ambu bag or manual resuscitator) model is a generic representation of a hand-held device commonly used to provide positive pressure ventilation to patients who are not breathing or not breathing adequately.
<img src="./Images/BagValveMask/BagValveMaskPhoto.jpg" width="400">
<center>
<i>Figure 1. A disposable BVM Resuscitator @cite bagvalvemask.</i>
</center><br>
@cite bagvalvemask
@anchor bvm-system
# System Design
......@@ -34,11 +41,11 @@ specific post process functionality for the bag valve mask. All postprocessing i
### The Bag Valve Mask Circuit
The bag valve mask model consists of a pressure/flow source to model bag squeezing. Resistances are present between the bag, valve, filter, and connection. There is a seal resistance that determines the amount of air that escapes during the simulation. Figure 1 shows the bag valve mask circuit. The compartments and transport graph mirrors the circuit. Substance values are set on the reservoir node/compartment, assuming infinite volume.
The bag valve mask model consists of a pressure/flow source to model bag squeezing. Resistances are present between the bag, valve, filter, and connection. There is a seal resistance that determines the amount of air that escapes during the simulation. Figure 2 shows the bag valve mask circuit. The compartments and transport graph mirrors the circuit. Substance values are set on the reservoir node/compartment, assuming infinite volume.
<img src="./Images/BagValveMask/BagValveMaskCircuit.png" width="400">
<center>
<i>Figure 1. Circuit diagram of the bag valve mask model. The circuit employs a driver source (either pressure or flow, depending on the settings) and resistances.</i>
<i>Figure 2. Circuit diagram of the bag valve mask model. The circuit employs a driver source (either pressure or flow, depending on the settings) and resistances.</i>
</center><br>
### Connecting to the %Respiratory Circuit
......@@ -122,7 +129,7 @@ Currently, the bag valve mask uses ideal pressure/flow sources.
@anchor bvm-settingsvalidation
## Validation
The bag valve mask settings are fully dynamic. A scenario that varies the settings in several different combinations on a apneic patient is included with the code base and produces the outputs shown in Figure 2.
The bag valve mask settings are fully dynamic. A scenario that varies the settings in several different combinations on a apneic patient is included with the code base and produces the outputs shown in Figure 3.
<center>
<table border="0">
......@@ -139,7 +146,7 @@ The bag valve mask settings are fully dynamic. A scenario that varies the setti
</tr>
</table>
</center>
<center><i>Figure 2. These plots show the successful implementation of varying bag valve mask settings with an apneic patient.</i></center><br>
<center><i>Figure 3. These plots show the successful implementation of varying bag valve mask settings with an apneic patient.</i></center><br>
<center><br>
Table 1. Validation results for the bag valve mask scenario.
......
......@@ -7617,3 +7617,11 @@ year = {2007}
year={2010},
publisher={Springer}
}
@online{bagvalvemask,
author = "Rama",
title = "Ballon_ventilation_1.jpg",
year = "2005",
urlseen = "09-15-21",
url = "https://commons.wikimedia.org/wiki/File:Ballon_ventilation_1.jpg"
}
Supports Markdown
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment