{"@type": "dcat:Dataset", "accessLevel": "public", "bureauCode": ["009:25"], "contactPoint": {"@type": "vcard:Contact", "fn": "NIH", "hasEmail": "mailto:info@nih.gov"}, "description": "Background:\n          We evaluated the effect on the respiratory gas exchange of the\n\t\t\t\t30\u00b0 head-down position and the complete covering of the face by sterile\n\t\t\t\tdrapes. These are used to cannulate the internal jugular vein and position the\n\t\t\t\tpulmonary artery catheter in the cardiosurgical patient. During the two\n\t\t\t\tmanoeuvres, 20 coronary patients and 10 patients with end-stage heart disease\n\t\t\t\twere supplied with oxygen (FiO2 =0.4) by a\n\t\t\t\tVenturi mask, while 20 coronary patients breathed room air. The arterial blood\n\t\t\t\tsamples to measure oxygen (PaO2) and carbon dioxide\n\t\t\t\t(PaCO2) tension and oxygen saturation (SaO2) were\n\t\t\t\tanalysed by a blood gas system.\n        \n        \n          Results:\n          The contemporary application of the head-down position and the\n\t\t\t\tdrapes over the face significantly increased PaO2 and\n\t\t\t\tSaO2 in all the patientssupplied with oxygen. Without the head-down\n\t\t\t\tposition, leaving the drapes over the face, did not significantly change the\n\t\t\t\ttwo parameters in the coronary patients supplied with oxygen, but induced a\n\t\t\t\tsignificant increase in PaO2 and SaO2 in the patients\n\t\t\t\twith end-stage heart disease. In the coronary patients that were breathing room\n\t\t\t\tair, PaO2 and SaO2 were stable throughout the study.\n        \n        \n          Conclusions:\n          We conclude that the 30\u00b0 head-down position and the complete\n\t\t\t\tcovering of the face by drapes does not interfere with respiratory gas exchange\n\t\t\t\tand can be safely performed in coronary patients supplied with oxygen or\n\t\t\t\tbreathing room air and in patients with end-stage heart disease supplied with\n\t\t\t\toxygen (FiO2 of 0.4).", "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/PMC29019/", "mediaType": "text/html", "title": "Official Government Data Source"}], "identifier": "https://healthdata.gov/api/views/g7gi-u2ur", "issued": "2025-07-13", "keyword": ["blood-gas-analysis", "cardiac-surgery", "head-down-position", "nih", "respiratory-function"], "landingPage": "https://healthdata.gov/d/g7gi-u2ur", "modified": "2025-09-06", "programCode": ["009:033"], "publisher": {"@type": "org:Organization", "name": "National Institutes of Health"}, "theme": ["NIH"], "title": "Effects on respiratory function of the head-down position and the\n\t\t  complete covering of the face by drapes during insertion of the monitoring\n\t\t  catheters in the cardiosurgical patient"}