Comparison of mitral inflow and superior vena cava Doppler velocities in chronic obstructive pulmonary disease and constrictive pericarditis
Smonporn Boonyaratavej, MDa,
Jae K. Oh, MD, FACCa,
A. Jamil Tajik, MD, FACCa,
Christopher P. Appleton, MD, FACC* and
James B. Seward, MD, FACCa
a Division of Cardiovascular Diseases and Internal Medicine, Mayo Clinic and Mayo Foundation, Rochester, Minnesota, USA
* Division of Cardiovascular Diseases, Mayo Clinic Scottsdale, Scottsdale, Arizona, USA
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Figure 1 Mitral inflow Doppler from patients with chronic obstructive pulmonary disease (COPD) (top) or constrictive pericarditis (bottom) showing respiratory variation in mitral E velocity (arrows). ins, inspiration; exp, expiration.
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Figure 2 Superior vena cava Doppler from a patient with constrictive pericarditis shows little respiratory changes in systolic forward flow velocity (bottom) from inspiration to expiration (arrows), in contrast to marked phasic inspiratory augmentation of forward flow velocity in chronic obstructive pulmonary disease (COPD) (top). S, systolic forward flow; D, diastolic forward flow; ins, inspiration; exp, expiration.
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Figure 3 Difference between inspiratory and expiratory systolic forward flow velocity (left) and diastolic forward flow velocity (right) in chronic obstructive pulmonary disease (COPD) and constrictive pericarditis patients. SVC, superior vena cava.
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