Electrocardiography inzira yekugadzira electrocardiogram (ECG kana EKG), kurekodha - girafu yevoltage maringe nenguva - yekushanda kwemagetsi emoyo uchishandisa maelectrodes akaiswa paganda.Aya ma electrode anoona shanduko diki dzemagetsi dzinokonzeresa depolarization yemwoyo inoteverwa nerepolarization panguva yega yega yemoyo (heartbeat).Shanduko mune yakajairika ECG pateni inoitika mukukanganisa kwakawanda kwemoyo, kusanganisira kukanganiswa kwemwoyo (senge atrial fibrillation uye ventricular tachycardia), isina kukwana coronary artery blood flow (yakadai semyocardial ischemia uye myocardial infarction), uye electrolyte disturbances hypokalemia. )
Muchirongwa che12-lead ECG, ma electrode gumi anoiswa pamakumbo evarwere uye pamusoro pechipfuva.Hukuru hwesimba remagetsi emwoyo hunoyerwa kubva pamakona gumi nemaviri akasiyana (“lead”) uye hunorekodhwa nekufamba kwenguva (kazhinji masekonzi gumi).Nenzira iyi, hukuru hwese uye kutungamira kwemoyo yemagetsi depolarization inotorwa panguva yega yega mukati memoyo kutenderera.
Pane zvinhu zvitatu zvakakosha kune ECG: iyo P wave, iyo inomiririra depolarization yeatria;iyo QRS yakaoma, iyo inomiririra depolarization ye ventricles;uye T wave, inomiririra repolarization yemaventricles.
Munguva yekurova kwemoyo wega wega, moyo une hutano une kufambira mberi kwakarongeka kwe depolarization kunotanga ne pacemaker masero mu sinoatrial node, inopararira mukati me atrium, inopfuura nepaatrioventricular node ichidzika mukati mebundle Yake uye muPurkinje fiber, ichipararira pasi uye kusvika kune yakasara mukati memaventricles.Iyi yakarongeka maitiro e depolarization inopa hunhu hweECG yekutevera.Kumurapi akadzidziswa, ECG inopa ruzivo rwakakura pamusoro pehutano hwemwoyo uye basa rekugadzirisa magetsi.Pakati pezvimwe zvinhu, ECG inogona kushandiswa kuyera mwero uye rhythm yekurova kwemoyo, ukuru uye chinzvimbo chemakamuri emoyo, kuvepo kwekukuvara kupi zvako kumasero etsandanyama yemoyo kana conduction system, mhedzisiro yemishonga yemoyo, uye basa. zvepacemaker dzakaiswa.
https://en.wikipedia.org/wiki/Electrocardiography
Nguva yekutumira: May-22-2019