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Boyle's Law
Robyn Gurule
Created on October 23, 2022
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Boyle'sLaw
By:Robyn Gurule
Volume= UpPressure= Down
Pressure= UpVolume=Down
What is Boyle's law?
"The volume of a gas is inverseley proportional to it's pressure" (Paramedic Care, Principles and Practice).AKA, volume goes up, pressure goes down. Pressure goes up, volume goes down. Discovered by Robert Boyle in 1662. Full credit to Boyle is debatable.
ViDEO
Boyle's Law definition and example
+ info
Why does that matter in EMS?
- When diving in water, you are going deep into the water, increasing the pressure around you, which affect the volume inside you.
- When traveling to high elevations, the air pressure around you decreases, increasing the air volume inside you.
Effects on Body Systems
Lungs
Brain
Blood Vessels
This is mostly a secondary factor of the FiO2 absorption rate and the blood vessels. But as pressure increases and volume decreases, less blood is being sent to the brain, leaving feelings of light headedness and hypoxia. And as pressure decreases and volume increases, the kidneys filter more water out, leaving the body dehydrated, with less hemoglibin carrying abilities due to the lack of FiO2, leaving the brain hypoxic.
The blood in vessels are functional off osmosis... if the blood vessels (volume) decrease due to pressure increase, it can cause osmosis out of the vessles and into the interspacial fluid, and vice versa for pressure decrease, out of interspacial fluid and into blood vessels.
As the pressure increases, the volume decreases, decreasing the expansion abilities of the lungs and vice versa for pressure increasing. This can limit breathing expansion OR it can expand the breathing expansion past the bodies ability (causing a pneumothorax).
Boyle's effects when diving
Tempor Labore
- As a person decends further into the water, the amount of water/pressure pushing against the body increases.
- Paired with Henry's Law, the increased pressure and decreased volume forces Nitrogen out of the blood and into the tissue at a condensed size.
- As the diver rises, the pressure decreases and the volume increases. If the diver rises too quickly, this will cause the nitrogen gas still in the tissue to expand causing pain and a threat to life.
Tempor
Boyles effects at High Altitude
3. The risk of developing a spontaneous pneumothorax is increased when flying, or having great elevation increased. The decreased pressure, and increased volume at high altitute, is linked to the smaller airway being plugged with mucus, which traps larger volumes of air. This progresses as hemoglobin saturations are low, leading to a spontanous pneumo. 4. Less common complications can be air embolisms, brain herniation or even gastrointenstinal morbidity all related to the expanding volume inside the body.
1. As elevation/altitude is gained, the atmospheric pressure decreases. This will increase the volume inside the body (this is to blame for the popping of ears during elevation change, which can lead to ear barotrauma in extreme cases).2. Henry's Law lowers the FiO2 at a higher elevation, making the amount of saturated hemoglobin less.
Symptoms & Treatment
Lorem Ipsum
Altitude Emergencies
Diving Emergencies
-Unusual fatigue-Itchy skin -Pain in joints/muscles -Dizziness/ringing in ears -Numbness/tingling/paralysis -Shortness of breath Treatment -Oxygen -Pain managment -Get the patient to a decompressive chamber
-Unusual fatigue-Dehydration -Hypoxia -Vomiting -Ringing/pain in the ears -Difficulty breathing (severe in a pneumo) Treatment -Oxygen -Lowering in elevation (THIS IS YOUR BEST TREATMENT)
VS
The Sci Guys:Science at home-SE2-EP9:Boyle's Law of Ideal Gases. Www.toutube.com. Retrieved October 23, 2022, from http://youtu.be/eR49g3ubTBg
thanks