Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
27 Cards in this Set
- Front
- Back
|
oral infections: possible types (3)
|
-bacterial
-viral -fungal |
|
|
edema
erythema ischemia |
-swelling
-reddish -whitish |
|
|
Lymphatic:
neutrophils eosinophis moncytes lymphocytes |
-1st line of defense, esp for bacteria
-allergic response, parasitic infections -increase later. Phagocytic -accumulate at sites of chronic inflammation |
|
|
bacteremia
|
-transient load of bact in blood
|
|
|
septicemia
|
-chronic load of bact in blood
|
|
|
cellulitis
|
- non-localized
- acute - spreading infection |
|
|
abcess
|
- localized
- suppurative (puss) - non-spreading infection |
|
|
3 methods of infectional spread
|
-circulatory sys (esp veins)
-lymphatic sys -tissue: penetration, or fascial planes |
|
|
why spread through veins (2)
|
-low pressure
-no valves |
|
|
Lymph drainage of head (2)
|
Superficial regions -> superficial ring (horizontal at junction of head/neck)
Tongue, tonsils, pharyngeal structures -> deep horizontal ring |
|
|
what is important about the drainage of tongue and floor of mouth (2)
|
-drains bilaterally
-high potential for rapid dissemination (spreading) |
|
|
Spread: fascial planes (3)
|
-follows path of least resistance
-at obstruction will pool ("space infection") -usually spaces are only potential spaces |
|
|
4 layers of fascia at neck
|
-prevertebral (musculoskeletal) - vertebrae/musculature
-pretracheal (visceral) - larynx, pharynx, trachea, thyroid -carotid sheath - VIC (neurovascular) -investing - trap, SCM and everything else (but not fatty) |
|
|
fascial layer surrounding investing layer
|
-Superficial cervical fascia:
-contains fat -platysma |
|
|
Potential spaces of lat head (2)
|
-masticator spaces: lat to ramus
-lat pharyngeal spaces: mediopost to ramus |
|
|
Potential spaces of neck (3)
|
-Retropharyngeal (retrovisceral) space: post to pharynx (skull->upper thorax)
-Danger Space (#4): splitting of ant prevertebral fascia into 2nd (alar) layer (skull->diaphragm) -carotid spaces (carotid sheaths): (hyoid -> base of neck |
|
|
Ludwig's angina (5)
|
-aggressive type of oral infection
-usually from extracted 3rd molar -causes sublingual space edema :. rigor of floor of mouth, elevation of tongue, diff breathing/swallowing -can spread rapidly (submandib, submental, lat pharyngeal, retrophary) -sig morbidity and mortality |
|
|
Horizontal superficial lymph ring:
nodes (5) |
-occipital
-retroauricular (mastoid) -parotid (buccal) -submand -submental |
|
|
Tracheal/horizontal deep lymph ring:
nodes, etc (8) |
-retropharyngeal
-pharyngeal, palatine, lingual tonsils -paratracheal, pretracheal -prelaryngeal, infrahyoid |
|
|
Vertical deap cervical chain (jugular trunk)
nodes (4) |
-retropharyngeal
-lingual -jugulodigastric -jugulo-omohyoid |
|
|
boundaries of prevertebral fascia:
ant post |
Ant: Alar fascia
Post: prevertebral fascia proper |
|
|
Potential spaces of neck (3)
|
-Retropharyngeal (retrovisceral) space: post to pharynx (skull->upper thorax)
-Danger Space (#4): splitting of ant prevertebral fascia into 2nd (alar) layer (skull->diaphragm) -carotid spaces (carotid sheaths): (hyoid -> base of neck |
|
|
Ludwig's angina (5)
|
-aggressive type of oral infection
-usually from extracted 3rd molar -causes sublingual space edema :. rigor of floor of mouth, elevation of tongue, diff breathing/swallowing -can spread rapidly (submandib, submental, lat pharyngeal, retrophary) -sig morbidity and mortality |
|
|
Horizontal superficial lymph ring:
nodes (5) |
-occipital
-retroauricular (mastoid) -parotid (buccal) -submand -submental |
|
|
Tracheal/horizontal deep lymph ring:
nodes, etc (8) |
-retropharyngeal
-pharyngeal, palatine, lingual tonsils -paratracheal, pretracheal -prelaryngeal, infrahyoid |
|
|
Vertical deap cervical chain (jugular trunk)
nodes (4) |
-retropharyngeal
-lingual -jugulodigastric -jugulo-omohyoid |
|
|
boundaries of prevertebral fascia:
ant post |
Ant: Alar fascia
Post: prevertebral fascia proper |
