LEC MODULE 5: UNIT 2-3 Flashcards
1
Q
spontaneous loss of consciousness caused by insufficient blood flow to the brain
A
Fainting (syncope)
2
Q
what causes fainting?
A
the malfunction of a part of the involuntary nervous system which regulates heart rate and blood pressure in response to a trigger that causes a vasovagal reaction
3
Q
vasovagal reaction leads to
A
sudden drop of heart rate, dilation of blood vessel in the legs causing blood to pool in the legs and in turn lower BP
4
Q
Triggers that causes vasovagal reaction
A
- sight of blood
- blood drawn
- fear of bodily injury
- standing for a long period of time
- heat exposure
- exertion
5
Q
other conditions that cam cause a person to faint
A
- postural hypotension
- dehydration
- low blood pressure
- heart disease
- anemia
- hypoglycemia
- neurological disorders
6
Q
other conditions that cam cause a person to faint
A
- postural hypotension
- dehydration
- low blood pressure
- heart disease
- anemia
- hypoglycemia
- neurological disorders
7
Q
symptoms that can be observed before fainting
A
- paleness of the skin
- hyperventilation
- Lightheadedness
- dizziness
- nausea
- feeling of worth cold
- clammy skin
