title: Abdominal Circulatory Interactions.
abstract: The abdominal compartment is separated from the thoracic compartment by the diaphragm. Under normal circumstances, a large portion of the venous return crosses the splanchnic and nonsplanchnic abdominal regions before entering the thorax and the right side of the heart. Mechanical ventilation may affect abdominal venous return independent of its interactions at the thoracic level. Changes in pressure in the intra-abdominal compartment may have important implications for organ function within the thorax, particularly if there is a sustained rise in intra-abdominal pressure. It is important to understand the consequences of abdominal pressure changes on respiratory and circulatory physiology. This article elucidates important abdominal-respiratory-circulatory interactions and their clinical effects.
authors.affiliation: Division of Pulmonary and Critical Care Medicine, Medical College of Wisconsin, Suite E 5200, 9200 West Wisconsin Avenue, Milwaukee, WI 53226, USA.
authors.forename: Gaurav
authors.initials: G
authors.lastname: Dagar
authors.affiliation: Division of Pulmonary and Critical Care Medicine, Medical College of Wisconsin, Suite E 5200, 9200 West Wisconsin Avenue, Milwaukee, WI 53226, USA.
authors.forename: Amit
authors.initials: A
authors.lastname: Taneja
authors.affiliation: Critical Care Fellowship Program, Medical Intensive Care Unit, Division of Pulmonary and Critical Care Medicine, Suite E 5200, 9200 West Wisconsin Avenue, Milwaukee, WI 53226, USA. Electronic address: Rnanchal@mcw.edu.
authors.forename: Rahul S
authors.initials: RS
authors.lastname: Nanchal
mesh_terms: D000005:Abdomen / Q000503:physiopathology*; D016280:Atrial Function, Right / Q000502:physiology*; D001775:Blood Circulation / Q000502:physiology*; D001794:Blood Pressure; D006352:Heart Ventricles / Q000503:physiopathology*; D006801:Humans; D007511:Ischemia / Q000175:diagnosis* / Q000628:therapy*; D012119:Respiration
keywords: Abdominal zone conditions; Ascites; Mechanical ventilation; Prone positioning; Vascular waterfall