Blood Pressure_Flow_Pupils Flashcards
4 factors affecting blood pressure
- force
- amount
- size
- flexibility
RAS
right arm, sitting
Small areas of local hypoxia known as “cotton wool spots” in the ___ ____ _____ of the retina.
Nerve Fiber Layer
Hypertensive Retinopathy
manifestation of the disease process of increased blood pressure in the eye.
- flame hemaorrhage
- hard exudates
- papilloedema
- cotton wool spot
Papilledema
optic nerve swollen
Sphygmanometer
Blood Pressure Cuff
Korotkoff Sounds
I: soft tapping, systolic reading II: swishing murmur III: crisper sound IV: abrupt sound muffling V: disappearance of sounds
Flow
- prepare in advance
- arrange tests for technical convenience
- don’t stop to record
- keep moving/don’t waste motions
- Time wasted is Time wasted
Pupils:
Parasympathetic System
miosis
pupillary light reflex
NT: Ach –> iris sphincter
The fibers of the pupil leave the optic tract and enter the brachium of the superior/inferior coliculus –> the pupil fibers head for the midbrain to the _________ nucleus.
This is an efferent/afferent pathway.
Brachium of the superior coliculus –> pretectal nucleus; Afferent.
Efferent Pathway:
Pretectal nucleus –> Edinger-westphal nucleus –> CN ____ back to eye –> (synapse) at ciliary ganglion –> (final destination?) ____ ___________
Edinger-westphal nucleus –> CN III back to the eye –> ciliary ganglion –> iris sphincter
CONSTRICTION CONSTRICTION
Anisocoria
Pupil size difference of more than 0.5 mm
Amaurotic pupil
blind pupil
no DIRECT light reflex
Hutchinson’s pupil
unilateral, fixed, dilated pupil