UNIPOLAR EXTREMITY LEADS IN RECORDS WITH LARGE Q_3
Authors: H J LOWEN, H E B PARDEE
Journal: Annals of Internal Medicine (1949)

Article1 September 1949UNIPOLAR EXTREMITY LEADS IN RECORDS WITH LARGE Q3HARRY J. LOWEN, HAROLD E. B. PARDEE, F.A.C.P.HARRY J. LOWENSearch for more papers by this author, HAROLD E. B. PARDEE, F.A.C.P.Search for more papers by this authorAuthor, Article, and Disclosure Informationhttps://doi.org/10.7326/0003-4819-31-3-456 SectionsAboutPDF ToolsAdd to favoritesDownload CitationsTrack CitationsPermissions ShareFacebookTwitterLinkedInRedditEmail ExcerptLarge Q waves in Lead III are an important sign of myocardial infarction and frequently are a permanent remainder of the event after all other abnormalities have disappeared from the electrocardiogram. They may also be the result of chronic degeneration of the myocardium. Since the importance of these waves was pointed out in 19301and it was recognized that they might be found occasionally in normal hearts, there have been repeated attempts to find criteria to decide whether a large Q3in a given record has a normal or abnormal significance. With the advent of the chest leads, data were...Bibliography1. PARDEE HE: Significance of electrocardiograms with large Q in Lead III, Arch. Int. Med., 1930, xlvi, 470. CrossrefGoogle Scholar2. WILSON FN: Electrocardiograms that represent the potential variations of a single electrode, Am. Heart Jr., 1933, ix, 447. Google Scholar3. GOLDBERGER E: Differentiation of normal from abnormal Q waves, Am. Heart Jr., 1945, xxx, 341. CrossrefGoogle Scholar4. NYBOER J: Assoc. Life Ins. Med. Dir. Am., Oct. 24-25, 1946. Google Scholar5. LYLE AM: Further observations on deep Q3 of the electrocardiogram, Am. Heart Jr., 1944, xxviii, 199. CrossrefGoogle Scholar6. MYERSOREN : The use of augmented left leg lead in the differentiation of normal from abnormal Q wave in standard Lead III, Am. Heart Jr., 1945, xxix, 708. CrossrefGoogle Scholar7. GOLDBERGER E: A simple indifferent electrocardiographic electrode of zero potential and a technic of obtaining augmented unipolar leads, Am. Heart Jr., 1942, xxiii, 483. CrossrefGoogle Scholar This content is PDF only. To continue reading please click on the PDF icon. Author, Article, and Disclosure InformationAffiliations: New York, N. Y.*Received for publication January 4, 1949.From the cardiac clinic and medical service of the New York Polyclinic Hospital of New York City, N. Y. PreviousarticleNextarticle Advertisement FiguresReferencesRelatedDetails Metrics Cited byDas Vektorkardiogramm beim HerzinfarktDie Coronarerkrankungen. Coronarinsuffizienz, Angina pectoris und HerzinfarktTHE CHOICE OF PRECORDIAL LEADS IN THE DIAGNOSIS OF CORONARY ARTERY DISEASE*MAX POMERANCE, M.D., JULIAN B. HOFFMAN, M.D., GEORGE J. ASHE, M.D.A new method of equating and presenting bipolar and unipolar extremity leads of the electrocardiogramThe relationship of lead II to lead I in posterior infarction and its bearing on the configuration of lead aVFThe significance of QAVF in the diagnosis of posterior infarction 1 September 1949Volume 31, Issue 3Page: 456-462KeywordsElectrocardiographyHeartHospitalsMedical servicesMyocardial infarctionMyocardiumThorax ePublished: 1 December 2008 Issue Published: 1 September 1949 PDF downloadLoading ...