Abnormal capillary physiology Capillary leak Increased capillary permeability UMLS:C1382398 SNOMEDCT_US:1608005 SNOMEDCT_US:87730004 An acute phenomenon characterized by hypotension and anasarca due to the loss of plasma volume into peripheral tissues, with evidence of decreased plasma volume (hemoconcentration) and protein loss from the intravascular space (hypoalbuminemia) during acute episodes. UMLS:C0343084 Systemic capillary leak syndrome