Sokuqonda ECG inhliziyo

Sokuqonda ECG kungaba thembeke ukubona kwezinso kumsebenzi inhliziyo, ukuhlola ijika nge umfanekiso ukushaya kwenhliziyo. Electrocardiogram - ekutadisheni umsebenzi umsebenzi inhliziyo isikhathi esithile. Iveza izinqubo kagesi imisipha yenhliziyo, ezifana depolarization - injabulo, futhi repolarization - ukubuyiselwa amaseli esivimba amanzi. Electrocardiogram wenziwa transthoracic, okuwukuthi, kusetshenziswa esifubeni, usebenzisa electrode ibekwe phezu kwesikhumba, kanye ukuqoshwa obengeziwe ukufundwa kudivayisi ekhethekile. emagama Ofanele ECG inikeza ithuba ngokucacile asungule ukusazi ngokunembile isifo esikuphethe futhi, uma kunesidingo, ukucacisa ukwelashwa esifike ngesikhathi.

ECG anemifanekiso amazinyo izingxenye kanye Slots. Nezakhamuzi cardiogram - iyona nephuzu imigca ijika amelela izinhlamvu Roman ngazo izinkomba ezilandelayo: ukusikwa atrial (P), Kufinyeta ventricular (Q, R, S) kanye ventricular aziphumulele (T). Barb «U» luyinto edlulayo futhi uthukela eqoshiwe. Izingxenye - izingxenye kuyinto umugqa oqondile yokuxhuma amazinyo eduze. Into ebaluleke kakhulu iyona okulotshiweyo i electrocardiogram ku PQ futhi ST izingxenye. Ngokwesibonelo, PQ nentaba umugqa kwakhiwa esikhathini excitation kokulibala ku atrioventricular (atrioventricular) engeyokuqala. Izikhathi - inhlanganisela amazinyo izingxenye. Into ebaluleke kakhulu ECG ngezikhawu kukhona ngezikhawu PQ futhi Q- T.

Excitation e myocardium we ventricles inhliziyo libhekene ukubukeka phezu ECG QRS isethi eziyinkimbinkimbi, ngoba akuyona kuphela omkhulu ATRIUM kwemisipha, kodwa futhi unalo septum interventricular. I QRS eziyinkimbinkimbi lokuqala ukulinganisa ubungako amazinyo ngabanye. Uma wave amplitude idlula 5 mm, lokhu esiqokiwe ofeleba Q, R, S, lapho amplitude motion lincane e ezidlula, njengoba ebekiwe incwadi encane q, r noma s. Sokuqonda ECG kuhilela ukufunda efanele amazinyo. Barb R (r) -, ngamunye iqondiswa phezulu - izinyo omuhle kungokwalabo QRS eziyinkimbinkimbi. Noma yimuphi phansi - izinyo negative elitholakala phambi izinyo R, ezinqunyiwe njengoba Q (q), futhi ezansi izinyo R - iyona S izinyo (s). Barb Q ephawula depolarization we septum interventricular, isilethikusebenza, futhi kukhona i-enwetshiwe ukujula value. Barb R kubonisa depolarization omningi we myocardium futhi S ikhombisa izigaba izinyo womsebenzi atrial we septum interventricular.

Sokuqonda ECG inhliziyo siqukethe ucwaningo ekufundeni emihlanu-phuzu:

1. ukuhlaziywa of kwenhliziyo futhi conduction inhliziyo. Lokhu kuhlaziya eqala PERIODICITY ukulinganisela kwenhliziyo, ekutholweni kwenhliziyo (HR), ukusungulwa umthombo excitation kanye conduction isici;

2. Ukunqunywa eksisi kagesi pulses inhliziyo;

3. Isifundo wave atrial P;

4. Isifundo QRST kulokulukhuni

5. Isiphetho ECG ukuhlola.

Sokuqonda ECG nenhliziyo enempilo Umuntu uqala nge short wave atrial (ab), okubonisa ushintsho umthamo we ventricles ngegazi engena esikhathini systole - ukusikwa atrial. Kulesi wave electrocardiogram singemuva P-wave bese ukhuphuka, okubonisa systole ventricular. Lokhu kuyanda emaweni (b-d) elandela izinyo Q futhi ihamba evundlile (D-e). Isikhathi ukuphumula i-ventricle engakwesobunxele kanye nokunciphisa ingcindezi therein ijika ngokucijile uwela phansi (e-g), g iphuzu uhambelana kuvulwa valve mitral nekhwane wegazi phakathi ventricles. Ngemva nokwehla iphuzu elihambisana voltage of valve mitral, futhi iphuzu f, elihambisana kuvalwe valve yomthambo i-aorta. Ngemva amafomu systolic wave ventricular ukugcwaliswa wave (g-h) bese wehlisa okuqukethwe kwabo (k-a). Kulandele uphinda ECG umjikelezo we inhliziyo yomuntu ephile kahle.