{"@type": "dcat:Dataset", "accessLevel": "public", "bureauCode": ["009:25"], "contactPoint": {"@type": "vcard:Contact", "fn": "NIH", "hasEmail": "mailto:info@nih.gov"}, "description": "Objective:\n          To evaluate the relationships between the changes in stroke volume\n\t\t\t\tindex (SVI), measured in both the aorta and the pulmonary artery, and the\n\t\t\t\tchanges in intrathoracic blood volume index (ITBVI), as well as the\n\t\t\t\trelationship between changes in aortic SVI and changes in the pulmonary artery\n\t\t\t\twedge pressure (PAWP).\n        \n        \n          Design:\n          Prospective study with measurements at predetermined\n\t\t\t\tintervals.\n        \n        \n          Setting:\n          Medical intensive care unit of a university hospital.\n        \n        \n          Patients and methods:\n          One hundred and fifty-four measurements were taken in 45\n\t\t\t\tcritically ill patients with varying underlying disorders. Aortic SVI and\n\t\t\t\tpulmonary arterial SVI were determined with thermodilution. PAWP was measured\n\t\t\t\tusing a pulmonary artery catheter. ITBVI was determined with thermal-dye\n\t\t\t\tdilution, using a commercially available computer system.\n        \n        \n          Results:\n          A good correlation was found between changes in ITBVI and changes\n\t\t\t\tin aortic SVI. However, this correlation weakened when changes in ITBVI were\n\t\t\t\tplotted against changes in pulmonary arterial SVI, which was in part probably\n\t\t\t\tdue to mathematical coupling between ITBVI and aortic SVI. A good correlation\n\t\t\t\tbetween changes in ITBVI and changes in aortic SVI could also be established in\n\t\t\t\tmost of the individual patients. No correlation was found between changes in\n\t\t\t\tPAWP and changes in aortic SVI.\n        \n        \n          Conclusion:\n          ITBVI seems to be a better predictor of SVI than PAWP. ITBVI may\n\t\t\t\tbe more suitable than PAWP for assessing cardiac filling in clinical\n\t\t\t\tpractice.", "distribution": [{"@type": "dcat:Distribution", "description": "Visit the original government dataset for complete information, documentation, and data access.", "downloadURL": "https://www.ncbi.nlm.nih.gov/pmc/articles/PMC29043/", "mediaType": "text/html", "title": "Official Government Data Source"}], "identifier": "https://healthdata.gov/api/views/yiex-9hsx", "issued": "2025-07-13", "keyword": ["critical-care", "intravascular-volume", "nih", "stroke-volume", "thermodilution"], "landingPage": "https://healthdata.gov/d/yiex-9hsx", "modified": "2025-09-06", "programCode": ["009:036"], "publisher": {"@type": "org:Organization", "name": "National Institutes of Health"}, "theme": ["NIH"], "title": "Relationships between volume and pressure measurements and stroke\n\t\t  volume in critically ill patients"}