Electrocardiographic Changes in Pulmonary Collapse Therapy

The effect of thoracoplasty and phrenemphraxis upon the electrocardiographic pattern of tuberculous patients was studied. Alteration in the size of QRS complexes resulted in variable changes in the mean electrical axis. Some alterations in T waves occurred in all leads, occasionally resulting in inversion of the T waves in Leads CF2 , CF4 and/or CF5 . There was no pattern characteristic of any of the collapse procedures studied.