Advanced Diving Medicine Flashcards
This topic will familiarize the trainee with Advanced Diving Medicine procedures
What is “Half-Time”
The amount of time required for a tissue to become 50% saturated with a gas
What is “Saturated”
Tissues are considered “Saturated” after six half-times or 98.4%
What is “Tissue Perfusion”
The act of getting oxygen via blood from the lungs to the tissues
What is “Tribonucleation”
Bubbles created when two surfaces in a vicus are rapidly separated or moved relative to each other
What are seed bubbles
pre-exsisting bubbles or gas micronuclei that form into larger bubbles following a dive
What is isobaric counter diffusion
Superaturation due to a lighter gas moving into tissue faster than heavier gas can move out
What is a kinin
Its a polypeptide that influences smooth muscle contraction inducing hypotension, increasing the blood flow and permeability of small blood capillaries and inciting pain
What is the max time on oxygen
Three hours
Type I DCS symptoms
Joint Pain
Skin (marbling)
Swelling and pain in the lymph nodes
Type II DCS symptoms
Neurological
Inner ear (staggers)
Cardiopulmonary (Chokes)
What do you need to get pulmonary O2 Toxicity
History of long exposure of O2 concentration greater then .5 ATA
Pulmonary O2 Symptoms
Burning pain on inspiration
Cough
Shortness of breath- dyspnea
What is AVPU
Alert
Voice
Pain
Unresponsive
Normal Temperature
98.6 +/- a few tenths
Normal Pulse
60-80 BPM
Tachycardia
> 120 BPM
Bradycardia
< 60 BPM
Normal Respirations
12-16
Tachypnea
> 22-30 Breaths per Min
Normal Blood Pressure
120/80 +/- 10
Wheezes
high pitch sound, constriction of bronchi/bronchioles
Ronchi
coarse gurgling sound
Rales
popping sound (crackles)
CNS O2 Toxicity occurs when ppO2 exceeds
- 3 ATA in wet environment
2. 4 ATA in dry environment
When should a nero exam NOT be completed prior ro recompression
- Acute or recent onset of a gross neurological deficit
- Diver surfaces unconscious
- Symptomatic omitted decompression
- Severe symptoms preventing patient from completing nero exam
What are the six parts of a neurological exam
1 - Mental Status 2 - Coordination 3 - Cranial Nerves 4 - Sensory 5- strength 6 - Deep Tendon Reflexes (DTR)
What are the 12 cranial nerves
I Olfactory (Smell) II Optic (visual) III Oculomotor (Pupil) IV Trochlear (Look inward) V Trigeminal (Facial sensation) VI Abduction (lateral movement of eyes) VII Facial (Face movement) VII Auditory (Hearing) IX Glossopharyngeal (gagging) X Vegas XI Sinal Accessory XII Hypoglossal (Movement of tongue)