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Modalities Exam 2
Cryotherapy, Superficial Heat, Laser
24
Health Care
Undergraduate 3
02/24/2011

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Term
Cryotherapy
Definition
used to describe the application of cold modalities that have a temperature range between 32 and 65 degrees F
Term
Ideal temperature
Definition
55-65 degrees
anything under 55 no analgesic effect
Term
Conduction
Definition
transfer of energy with direct contact
Term
Convection
Definition
transfer of energy when particles move across the body

(whirlpool)
Term
Radiation
Definition
Transfer of energy between 2 objects without a medium

(electromagnetic waves, diathermy)
Term
evaporation
Definition
loss of heat through liquid0gas exchange

(sweating)
Term
conversion
Definition
one state of matter to another
Term
Why use cryotherapy?
Definition
stimulate mechanoreceptors, thermoreceptors to shut down nociceptors
A beta
Inhibit A delta and C fibers
Term
Secondary tissue injury
Definition
injury to tissues surrounding injury site (primary)
Term
Physiological responses to limit secondary injury
Definition
hemodynamic and metabolic
Term
Hemodynamic effects
Definition
immediate response of vasoconstriction to arterioles and venules
Term
causes of vasocontriction
Definition
direct action on smooth muscle of vasculature

reflexive cutaneous vasoconstriction to preserve body heat (regulated by hypothalumus)
Term
to obtain theraputic effects
(hemodynamic effects)
Definition
skin temp reduced to 57 for decrease in blood flow

skin temp decreased to 58 for analgesic effect
Term
precautions to cryotherapy
Definition
superficial nerves
elevated BP
open wounds
psych
Term
superficial nerves
Definition
ulnar, common peroneal, superficial cutaneous
Term
contraindications to cryotherapy
Definition
raunauds, cold uticaria, cryoglobenima, proxismal cold hemoglobinuria
Term
cryokinetics
Definition
use of cryotherapy before theraputic exercise
Term
superficial and deep heat
Definition
superficial: less than 2 sm
deep: more than 2 cm
Term
why do you not use heat for 48-72 hrs post injury?
Definition
"promotes" swelling
Term
optimal tissue temp for thermotherapy
Definition
104-113 degrees F
any warmer...denatures proteins
Term
local effects of thermotherapy
Definition
increase metabolic rate, vasodialation, increase capillary permeability, increase nerve conduction, decrease pain, decrease mscl spasm
Term
systemic effects of thermotherapy
Definition
increase body temp, pulse, and respiratory rate, decrease BP (because of vasodialation)
Term
indications of thermotherapy
Definition
increase ROM, lymph drainage, blood flow, decrease pain and mscl spasm
Term
contraindications of thermothearpy
Definition
acute injury, open wounds, heat illness, pregnant abdomen, genetals and eyes
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