Contrast Flashcards
Physiological effects of contrast
- increase circulation and venous flow by alternating local derivation and retrostasis
- increase local blood flow up to 100%
Vascular flush
- increase in circulation and venous flow
- Vasoconstriction and vasodilation
- from effects of derivation and retrostasis
- increase of local blood flow by 100%
- superficial and local flush of tissue
Derivation
- caused by hot
- brings fresh oxygenated blood that carries defensive and healing cells
Retrostasis
- caused by cold
- limits local pain and reduces the build-up of edema and waste products
Why contrast?
- More effective at increasing circulation and venous flow locally in a tissue an area
- thus due to the opposing effects of hot and cold
- Reduction of increase in metabolism and congestion that occurs from heat
Guidelines for contrast
- Temperature: 10 degrees
- Duration:3 to 1 (hot to cold)
- repeated: 6-8 times
3min hot -1 min cold duration
Generally used for flushing
5min cold- 30 sec warm
Four conditions involving sub acute inflammation
3 min cold- 1 min hot
for later stages of healing; residual swelling and bruising are still present.
Goal is to increase local circulation
-Finish with hot application or prolonged cold application
Goal is vascular flush with reduction in swelling
Start with heat and end with cold
Uses for contrast
- conditions with need for flushing (edema)
- sub-acte injury
- other non-acute soft tissue conditions
- chronic situations involving unresolved edema collection or circulatory congestion
- aid poor ciculation
- daily health care
- detoxifying to stimulate liver and lymphatic system
Contraindications for contrast
- Peripheral vascular disease
- hemorrhage
- nerve injuries
- diabetes
- Malignant tumor
Contrast foot bath benefits
- strengthens, retains and stabilizes whole body circulation
- stimulates immune system
- stabilizes ANS
- Strengthens mucous membranes in throat and nose
Contrast foot bath uses
- headaches with cold compress on neck
- chronic sinusitis, head congestion
- pelvic congestion
- susceptibility to colds
- poor circulation
- sluggish metabolism
- low bp
- tired legs
- -subacte
- chronic cold feet