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Müller, HM; Tripolt, MB; Rehak, PH; Groell, R; Rienmüller, R; Tscheliessnigg, KH.
Noninvasive measurement of pulmonary vascular resistances by assessment of cardiac output and pulmonary transit time.
Invest Radiol. 2000; 35(12):727-731 Doi: 10.1097%2F00004424-200012000-00006
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Leading authors Med Uni Graz: Müller Helmut
Co-authors Med Uni Graz: Groell Reinhard; Rehak Peter; Rienmüller Rainer; Tscheliessnigg Karlheinz
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Abstract:: RATIONALE AND OBJECTIVES: Pulmonary vascular resistance is of special interest in many diseases. Usually it is determined invasively by catheterization, but cardiac output and pulmonary transit time can be ascertained by several noninvasive methods. METHODS: Fourteen heart recipients (age 34-71 years) were examined by electron-beam CT of the heart. Cine and flow studies were performed using a total of 60 mL of contrast and a breath-hold of 20 seconds. RESULTS: A mathematical model for calculating pulmonary vascular resistances from noninvasively measured cardiac outputs and pulmonary transit times was developed. Right-sided heart catheterization served as the reference method. CONCLUSIONS: The formula created seems to allow a clinically valid estimate of pulmonary vascular resistance from noninvasively acquired data.
Find related publications in this database (using NLM MeSH Indexing): Algorithms -; Cardiac Output -; Female -; Heart Transplantation - physiology; Humans - physiology; Male - physiology; Middle Aged - physiology; Models, Theoretical - physiology; Pulmonary Artery - radiography; Pulmonary Circulation - physiology; Pulmonary Veins - radiography; Tomography, X-Ray Computed - radiography; Vascular Resistance - physiology
Find related publications in this database (Keywords): pulmonary circulation; cardiac output; vascular resistance; electron-beam CT