Septal/free wall curvature ratio: a noninvasive index of pulmonary arterial pressure.

S. A. Reisner, Z. Azzam, M. Halmann, Diana Rinkevich, S. Sideman, W. Markiewicz, R. Beyar

Research output: Contribution to journalArticle

35 Citations (Scopus)

Abstract

The leftward septal shift, a well-recognized feature of pulmonary hypertension, was used to quantify right ventricular pressure in 16 patients with pulmonary hypertension and 11 control patients, all with normal left ventricular function. Pulmonary pressure was calculated from the tricuspid regurgitation jet and left ventricular pressure was taken by arm cuff measurements. Short-axis echocardiographic images were obtained and the midwall curvatures of the septum and the left ventricular free wall were measured for each frame from end diastole to end systole and averaged. The septal/free-wall curvature ratio (CR) was 0.37 +/- 0.19 in the study group compared with 0.79 +/- 0.06 in the control group (p <0.0001). A tight relationship between the CR and the transseptal/transmural pressure ratio (CR = 0.057 + 0.89 x transseptal/transmural pressure ratio; r = 0.98; p <0.001) was obtained by linear regression. Given the systolic arterial pressure, the pulmonary systolic pressure is given by: systolic arterial pressure x (1.064-1.12 x CR). Therefore the CR can be used as a noninvasive index that reflects the level of pulmonary pressure in relationship to the systolic arterial pressure.

Original languageEnglish (US)
Pages (from-to)27-35
Number of pages9
JournalJournal of the American Society of Echocardiography : official publication of the American Society of Echocardiography
Volume7
Issue number1
StatePublished - Jan 1994
Externally publishedYes

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Arterial Pressure
Blood Pressure
Pressure
Lung
Ventricular Pressure
Pulmonary Hypertension
Ventricular Septum
Tricuspid Valve Insufficiency
Diastole
Systole
Left Ventricular Function
Linear Models
Control Groups

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine
  • Radiology Nuclear Medicine and imaging

Cite this

Septal/free wall curvature ratio : a noninvasive index of pulmonary arterial pressure. / Reisner, S. A.; Azzam, Z.; Halmann, M.; Rinkevich, Diana; Sideman, S.; Markiewicz, W.; Beyar, R.

In: Journal of the American Society of Echocardiography : official publication of the American Society of Echocardiography, Vol. 7, No. 1, 01.1994, p. 27-35.

Research output: Contribution to journalArticle

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AU - Markiewicz, W.

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