Hypotension true true UMLS:C0020649 HP:0005127 https://www.ncbi.nlm.nih.gov/pubmed/30378543 human_phenotype HP:0002615 SNOMEDCT_US:45007003 Low blood pressure Arterial hypotension Low Blood Pressure, vascular hypotension. HP:0006701 MSH:D007022 Abnormal systemic blood pressure