Chronic obstructive pulmonary disease (COPD) is a group of respiratory diseases that involve structural changes to the lung tissue that impair gas exchange (oxygen and carbon dioxide exchange). Emphysema and chronic bronchitis are two of the most common conditions.
peaked, wide or notched; height >2.5 mm
flat
1. Six Second ECG GuidebookA Practice Guide to Basic and 12 Lead ECG Interpretation, written by Tracy Barill, 2012 Introduction The ability to correctly interpret an electrocardiogram (ECG), be it a simple six second strip or a 12 lead ECG, is a vital skill... (2012), T Barill, p. 154