Kazan medical journalKazan medical journal0368-48142587-9359Eco-Vector6301710.17816/kazmj63017Research ArticleOrthogonal ECG leads in the clinic of coronary heart diseaseLatupovA. G.<p>Department of Therapy No. 1; Department of Propedeutics of Internal Diseases</p>info@eco-vector.comOzolE. A.<p>Department of Therapy No. 1; Department of Propedeutics of Internal Diseases</p>info@eco-vector.comHodjaevaD. K.<p>Department of Therapy No. 1; Department of Propedeutics of Internal Diseases</p>info@eco-vector.comVoicehovichG. S.<p>Department of Therapy No. 1; Department of Propedeutics of Internal Diseases</p>info@eco-vector.comKazan State Pedagogical University named after VI Lenin and the Department of Propedeutics of Internal DiseasesMedical Institute them. S. V. Kurashova3107197455429311003202110032021Copyright © 1974, Latupov A.G., Ozol E.A., Hodjaeva D.K., Voicehovich G.S.1974<p>Despite the 70-year period of application of electrocardiography in the clinic, the informative possibilities of analyzing electrical processes in the heart are by no means exhausted.</p>Kazan Medical archiveКазанский медицинский архив