Ịchọpụtacha ihe e dere ECG obi

Imepụta ECG nwere ike reliably ịchọpụta abnormalities na gbasara obi ọrụ, ịgagharị usoro na onyinyo nke obi ọnụego. Ngwá - ọmụmụ nke ọrụ nke gbasara obi ọrụ n'ihi na a ụfọdụ oge. Ọ na-egosiputa eletriki Filiks n'obi muscle, dị ka depolarization - mkpali, na repolarization - mweghachi nke myocardial mkpụrụ ndụ. Ngwá rụrụ transthoracic, ya bụ, site na obi, eji electrodes enịm na akpụkpọ elu, na ihe ọzọ ndekọ nke agụ na a pụrụ iche na ngwaọrụ. Proper nyopụta nke ECG-enye ha ohere o doro anya na iru ezi nchoputa na, ma ọ bụrụ na ọ dị mkpa, iji chọpụta na-adọ ọgwụgwọ.

ECG mejupụtara oyiyi nke ezé agba na ohere mpere. Kụkpọrọ ụgbọala cardiogram - bụ ruo n'ókè nke usoro edoghi nke na-anọchi anya Roman akwụkwọ ozi e ji mara ndị na-esonụ na-egosi: atrial mkpi (P), ventricular contractions (Q, R, S) na ventricular ntụrụndụ (T). Barb «U» bụ fickle na ịdị dere. Agba - agba bụ a ogologo akara ejikọta n'akụkụ ezé. Ihe kacha mkpa bụ transcript nke ihe ngwá na PQ na ST agba. Ka ihe atụ, PQ ngwe akara guzobere excitation oge nke na-egbu oge na atrioventricular (atrioventricular) ọnụ. Etiti oge - a Nchikota ezé na agba. Ihe kacha mkpa ECG etiti oge na-etiti PQ na Q- T.

Excitation na myocardium nke obi ventricles e ji ọdịdị na ECG QRS mgbagwoju set, n'ihi na ọ bụghị naanị oke atrium muscle, kamakwa nwere interventricular septum. The QRS mgbagwoju mbụ atụmatụ size nke onye ezé. Ọ bụrụ na-efegharị efegharị njupụta karịa 5 mm, a na-ẹkedọhọde isi obodo leta Q, R, na S, ebe njupụta nke ngagharị bụ nta na ịdị ukwuu, ọ na-kenyere obere akwụkwọ ozi q, r ma ọ bụ s. Ịchọpụtacha ihe e dere ECG agụnye ziri ezi na-agụ nke ezé. Barb R (r) -, onye ọ bụla na-eduzi elu - mma nha nha bụ nke mgbagwoju QRS. Ọ bụla n'ala - na-ezighị ezi eze nsogbu ke n'ihu eze R, na-kenyere ka Q (q), na downstream nke nha nha R - bụ eze S (s). Barb Q e ji mara ndị depolarization nke interventricular septum, myocardial infarction, na ya nwere ogologo omimi uru. Barb R egosi depolarization nke nnukwu nke myocardium, na S-egosi na eze na ngalaba nke atrial ọrụ nke interventricular septum.

Ịchọpụtacha ihe e dere ECG obi mejupụtara a ise mgbe ọgụgụ research:

1. The analysis of obi ọnụego na gbasara obi conduction. Nke a analysis eburu periodicity atụmatụ obi ọnụego, mkpebi siri ike nke obi ọnụego (Ọrụ Nchịkwa), oruru nke excitation iyi na conduction e ji mara;

2. Mkpebi Siri Ike nke eletriki axis nke obi pulses;

3. Study atrial efegharị efegharị P;

4. The ọmụmụ nke mgbagwoju QRST;

5. Mmechi ECG nchọpụta nsogbu.

Ịchọpụtacha ihe e dere ECG obi ike na onye na-amalite na a nkenke atrial efegharị efegharị (ab), na-atụgharị uche mgbanwe na ikike nke ventricles na ọbara na-abanye na oge nke systole - atrial mkpi. Na nke a ngwá efegharị efegharị bụ n'ofè P-efegharị efegharị na mgbe na-aga, na-egosi ventricular systole. Nke a nkpoda ịrị elu (b-d) ndị a na-eze Q na-akpali na kehoraizin ọnọdụ (D-e). The ntụrụndụ oge nke ekpe ventricle na mgbali Mbelata nime ya, usoro sharply ọduọ (e-g), g ebe kwekọkwara na oghere nke ndị mitral valvụ na rosh ọbara n'ime ventricles. Ke Ruth nke Mbelata bụ a n'ókè na kwekọrọ na voltaji nke ndị mitral valvụ, na n'ókè nke f, kwekọrọ ekwekọ na mmechi nke aortic valvụ. Mgbe systolic efegharị efegharị forms ventricular ndochi efegharị efegharị (g-h) na-akwụsịlata ha ọdịnaya (k-a). Sochiri megharịa ECG okirikiri nke a ike, obi ụmụ mmadụ.