METHODES NON INVASIVES POUR LA DETERMINATION DE LA PRESSION ARTERIELLE PULMONAIRE PAR ULTRASONS CHEZ LES MALADES ATTEINTS DE MALADIES REPIRATOIRES CHRONIQUES

Translated title of the contribution: Non-invasive methods using ultrasound to determine pulmonary artery pressure in chronic respiratory disorder patients

M. Morpurgo, A. Torbicki, R. Tramarin

Research output: Contribution to journalArticlepeer-review

Abstract

Ultrasound techniques and especially Doppler echocardiography offer several approaches to non-invasive assessment of pulmonary arterial pressure. The method based on the measurement of the velocity of the jets of tricuspid or pulmonary regurgitation is the most straightforward one, in most cases allowing for reliable quantitative assessment of pulmonary hypertension and thus should be applied as a method of choice whenever possible. Unfortunately, its application in patients with lung hyperinflation is limited by topographic factors. Short acceleration time of flow velocity in the right ventricular outflow tract (AcT less than 70-75 msec), especially accompanied by midsystolic deceleration occuring at end-expiration, is a strong evidence of severe pulmonary hypertension. Long AcT (above 115-120 msec) is virtually diagnostic of normal pulmonary arterial pressure. If high speed Doppler tracings of both pulmonary and tricuspid valve flow are available right ventricular isovolumic relaxation time may be used for estimation of pulmonary systolic pressure. However, the elaboration of the laboratory's own regression formula rather than application of Burstin nomogram seems more advisable in such cases. The future of non-invasive assessment of pulmonary hemodynamics will depend on the reliability to monitor acute and chronic changes not only in pulmonary arterial pressure, but also in flow and resistance. At present, echocardiography should be considered as a good screening test allowing also to stratify moderate and severe pulmonary hypertension. The exact assessment of pulmonary hemodynamics, especially in patients with chronic respiratory disease, when needed for important therapeutic decisions, should in most cases rely on right heart catheterization.

Translated title of the contributionNon-invasive methods using ultrasound to determine pulmonary artery pressure in chronic respiratory disorder patients
Original languageFrench
Pages (from-to)437-446
Number of pages10
JournalAnnales de Cardiologie et d'Angeiologie
Volume40
Issue number7
Publication statusPublished - 1991

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine

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