The Cardiogram of Congenital and Acquired Right Ventricular Hypertrophy

The circulation in patients with chronic bronchitis and emphysema at rest and during exercise, with special reference to the influence of changes in blood viscosity and blood volume on the pulmonary circulation.

“…All the patients were receiving digoxin and chlorothiazide at the time of the study. In 13 patients (excluding B9 and B10) the electrocardiogram showed changes typical of right ventricular hypertrophy (13). During the 5 years of study, 11 of these patients are known to have died.…”

Relationship between Dyspnea in Daily Life and Psycho-physiologic State in Patients with Chronic Obstructive Pulmonary Disease during Long-Term Domiciliary Oxygen Therapy.

“…(15) and/or pulmonary hypertension detected by right heart catheterization or by radiological signs ( 16). The mean±SD age was 69.5±10.8 year, and the duration of LTOTwas 944+739 days.…”

The Application of the Minnesota Code to Population Studies of the Electrocardiogram in the Elderly

“…The first 400 technically satisfactory records were read independently by each of the authors, and coded according to the modification of the Minnesota code published by Rose and Blackburn [1968]. Code 9.4 (abnormal clockwise and counterclockwise rotation) was not used; right ventricular hypertrophy was graded according to the criteria of Goodwin and Abdin [1959]. The presence of a dominant R wave in lead aVR or V4R, or of a dominant S wave in lead V5 (in the absence of evidence of anterior myocardial infarction) is taken to indicate right ventricular hypertrophy.…”