E-Stim Tissue Healing & Contraction Flashcards Preview

Physical Agents > E-Stim Tissue Healing & Contraction > Flashcards

Flashcards in E-Stim Tissue Healing & Contraction Deck (33)
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1

What occurs in the inflammation phase

Hemostasis
Autolysis
Phagocytosis
Fibroblastic migration

2

What occurs in the proliferation phase

Collegen synthesis
angiogenesis
epitheliazation
wound contraction

3

What occurs in the maturation phase

Collagen lysis
Collagen replacement

4

Factors that affect wound healing

Systemic med- aspirin, corticosteroids, indomethacin
Topical meds
Malnutrition
presure/stretch
infection
immunodeficiency
smoking
necrotic/dry tissue

5

Common Places for a Pressure sore

sacrum, ischial tuberosity, greater trochanter, heel, malleoli

6

Stages of Pressure sores

Stage 1- nonblanchable erythema of intact skin
Stage 2- partial thickness skin loss to epidermis/dermis/both
Stage 3- full skin thickness loss affects subcutaneous
Stage 4- full skin thickness loss affecting mm./bone

7

Common places/Etiology of Arterial Insuf ulcers

lateral foot, on foot, toe joints, mallelio

arteriosclerosis, arterial occlusion/disruption

8

Common places/Etiology of Venous Insuf ulcers

above the ankle, medial lower leg

venous hypertension, venous valvular dysfunction

9

Common places/Etiology of Diabetic Ulcers

plantar foot, lateral foot, met heads, heel

neuropathy, arterial insuf

10

Electrochemical effects pos vs neg electrode

Negative electrode=alkaline
Positive electrode=acid

11

Electrophysical effects

electrokinetic-movement of ions
ie depolariziong of membrane

12

Electrothermal effects

microvibration to charge particles creating heat

H=0.24I2xRxT

I2=RMS
R=skin impedance
T=time

13

Effects that would benefit from wound healing

glavanotaxis
collagen synthesis
prolif of fibroblast
angiogenesis
bacteriacidal
epitheliazation
increase blood to wound

14

Galvanotaxis Inf phase consists of

macrophages- neg
neutrophils inactivated- neg
phagocytosis
autolysis

15

Galvanotaxis Prolif phase consists of

fibroblast- pos
collegen formation

16

Galvanotaxis Maturation phase consists of

myofibroblast-pos
keratinocytes-pos
epidermal cells-neg
wound contraciton
epitheliazation

17

Human battery pos vs neg

outside=neg
inside=positive

switches with injury

18

Protocol 1

cathode to site for 1-5 days

19

Protocol 2

cathode- ecoli
anode-aueras

20

Protocol 3

anode-attract macrophages/neutrophils for autolysis/phagocytosis

cathode- attracts fibroblast/myofibroblast for wound contraction/epitheliazation, granulation

21

Protocol 4

cathode- liquefy/soften tissue, soluble
anode- stimulate epetheliazation

22

Cathode- neg effects and its Galvanotaxis cells

increase blood flow
increased growth of granulation
epidermal cell migration
anti microbial

Galvanotaxis:fibroblast, neutrophisl, platelets, lymphocytes, mast cells, keratinocytes

23

Anode- pos effects and its Galvanotaxis cells

decrease blood flow
vasoconstriction
decrease mast cells during tissue healing
growth/re-organization of epithelial cells
anti microbial

Galvanotaxis: macrophages, neurtrophils inactivated, epidermal cells

24

Neg pole theory

repel negatively charged serum proteins
decrease microvessel diameter
decrease pore size

25

Voluntary contraction vs. E-stim contraction

voluntary
small slow MU recruited first
asynchronous MU recruited

E-stim
large fast MU recruited first
fast fatigue muscle, requires more rest time
synchronous MU recruitment

26

Factors affecting Force-Frequency

mm length
mm temperature
fatigue state
degree of potentiation

27

E-stim required for twitch, contration, tetanus

follows arndt schultz law, must be strong/long/rise enough

low freq=1-2 stim per second for twitch
med freq=15 pps for contraction
>30 for tetanus

28

Strength MVIC Training

to strength train healthy mm via e-stim, must stim at 50% of MVIC

to strengthen injuried mm via e-stim, must stim at 10% of MVIC

29

Overload Theory

larger load placed on a muscle, the muscle will produce a greater contraction =strength will increase more than if smaller load on muscle

30

Specificity Theory

should produce greater strength gains than exercise alone at same contraction force