Diathermy group A

Document Sample
Diathermy group A Powered By Docstoc
					Diathermy group A

accomplished, 9                condenser plates, 9             microwave radiation,            soreness and sprain,
acoustic, 9                    depending on, 9                 9                               9
adjunct to surgery, 9          discovered, 9                   neuro-surgery, 9                suffer
apparatus, 9                   excessive, 9                    noted, 9                        irreversible damage,
applications, 9                eye surgery, 9                  point out, 9                    9
bacterial infection            forewarn, 9                     primarily, 9                    sufficient, 9
tissues, 9                     generate, 9                     purposes, 9                     surface, 9
beneficial, 9                  harmful, 9                      rate of ion diffusion,          term, 9
cataracts of the eye           inflammatory                    9                               thermal
lens, 9                        disease, 9                      realised, 9                     denaturation, 9
cause, 9                       instance, 9                     receptors, 9                    utilisation, 9
cellular membranes,            irradiation, 9                  result from, 9                  vibrations, 9
9                              lens protein, 9                 seal off traumatised            warts and moles, 9
coagulate, 9                   localise, 9                     tissues, 9                      wavelengths, 9
coined, 9                      merely, 9                       since, 9
concentrated, 9                metabolism, 9                   somewhat, 9

Which adjectives should go with which nouns?

1.   Condenser                                            A.   lens
2.   Eye                                                  B.   diffusion
3.   Eye                                                  C.   radiation
4.   ion                                                  D.   protein
5.   Microwave                                            E.   surgery
6.   Lens                                                 F.   plates

Using their correct form, put the words below where they belong
 accomplish     cause     coin    concentrate  discover    forewarn                generate         localise   note

    If you ____ a fact, you become aware of it.
    If you ____ a word or a phrase, you invent it.
    If you ____ something, you make it happen.
    If you ____ something, you succeed in doing it.
    Something that is ____ exists or occurs only in one place.
    If you ____ on something, you give all your attention to it.
    If you ____ someone, you warn them that something is going to happen.
    To ____ something means to cause it to begin and develop; a formal use
    When you ____ something, you find it or find out about it, especially for the first time.

Which adjectives should go with which nouns?

1.   Bacterial                                            A.   denaturation
2.   Cellular                                             B.   damage
3.   Inflammatory                                         C.   tissues
4.   Irreversible                                         D.   membranes
5.   Thermal                                              E.   infection
6.   Traumatised                                          F.   disease

Using their correct form, put the words below where they belong
    point out    realise    result from  seal off  suffer    traumatise                 irradiate     coagulate

If you ____ something, you become aware of it.
If you ____ out a fact or mistake, you tell someone about it.
If someone ____ pain or an illness, they are badly affected by it.
If you ____ a place off, you block all the entrances so that nobody can get in or out
If something ____ from a particular event or action, it is caused by that event or action.
To ____ means to cause an injury (as a wound) to living tissue caused by an outside agent <surgical
To ____ means to affect or treat by radiant energy (as heat); specifically: to treat by exposure to radiation.
To ____ means to cause to become viscous or thickened into a coherent mass
Check the following and correct where necessary:

1. cataracts           A. the sum of the processes by which a particular substance is handled in the
                          living body
2. denaturation        B. surgery of nervous structures (as nerves, the brain, or the spinal cord)
3. metabolism          C. spontaneous and random movement of molecules (nutrients, respiratory
                          gases, or neurotransmitters) into and out of individual cells from a region in
                          which they are at a high concentration to a region in which they are at a low
                          concentration until a uniform concentration is achieved throughout
4. neuro surgery       D. a clouding of the lens of the eye or of its surrounding transparent membrane
                          that obstructs the passage of light
5. ion diffusion       E. the modification of the molecular structure of (as a protein or DNA) especially
                          by heat, acid, alkali, or ultraviolet radiation so as to destroy or diminish some
                          of the original properties and especially the specific biological activity

Read the text and questions in your group, then discuss it with the person of your choice

   How is deep heating of tissues accomplished in diathermy?
   Who was the first to point out possible medical uses of high-frequency electrical current?
   Who coined the term “diathermy”, meaning “heating through”?

        Three forms of diathermy are in wide use by physical therapists in hospitals and clinics: short wave,
ultrasound, and microwave. In short-wave diathermy, the part to be treated is placed between two
condenser plates, and the highest temperature is concentrated in the subcutaneous tissues. Short wave
usually is prescribed as treatment for deep muscles and joints and is sometimes used to localise deep
inflammatory disease. Ultrasound diathermy uses high-frequency acoustic vibrations; their heating effect
increases circulation and metabolism and speeds up the rate of ion diffusion across cellular membranes.
During treatment the apparatus is moved slowly across the surface of the area to be affected. Ultrasound is
used to heat selected muscles that are too deep to be significantly affected by surface heating. Microwave
diathermy uses radiation of very high frequency and short wavelength similar to that used in microwave
ovens; all physiologic responses are due to its heating effect.

   How can diathermy be used depending on the amount of heat generated?
   Why is it beneficial in the first instance?
   Why is it useful in the second instance?
   What are other diathermy–related applications?

         Diathermy can be harmful, however, if so much internal heat is given that the normal cells of the
body suffer irreversible damage. Since humans have heat receptors primarily in their skin, they cannot be
forewarned by pain when they receive a deep burn from diathermy. Sensitive regions easily damaged by
diathermy are those having reduced blood circulation. Cataracts of the eye lens have been produced in
animals by microwave radiation applied in sufficient intensity to cause thermal denaturation of the lens

Find the mistakes and correct them!


Short wave                       high-frequency acoustic                 Positive effects of heating

Ultrasound                       high-frequency radiation of             treatment of deep muscles and
                                  short wavelength                         joints
                                                                          deep inflammatory diseases

Microwave                        surface heating                         increase in circulation and
                                                                          acceleration of ion diffusion

Shared By: