QJM Advance Access originally published online on February 8, 2006
QJM 2006 99(3):127-133; doi:10.1093/qjmed/hcl009
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The role of vasopressin in cardiorespiratory arrest and pulmonary hypertension
From the 1Hormone & Vascular Biology Group, Academic Unit of Endocrinology, Division of Genomic Medicine, The University of Sheffield, 2Department of Cardiology and 3Sheffield Pulmonary Vascular Disease Unit, Royal Hallamshire Hospital, Sheffield Teaching Hospitals NHS Foundation Trust and 4Faculty of Health and Well-being, Sheffield Hallam University, Sheffield, UK
Address correspondence to: Professor K.S. Channer M131 Cardiology Royal Hallamshire Hospital Glossop Road, Sheffield S10 2JF. email: Kevin.Channer{at}sth.nhs.uk
Vasopressin is a peptide synthesized in the hypothalamus whose primary role is in fluid homeostasis. It has recently gained interest as a potential agent in the treatment of cardiorespiratory arrest. Initial human studies have shown benefits with vasopressin in patients with out of hospital ventricular fibrillation and asystolic cardiac arrest. One subgroup of patients not included in these trials is patients with pulmonary hypertension, who have a five-year mortality rate of 50%. Animal studies have shown vasopressin to be a vasodilator in the pulmonary vascular system of rats, under normoxic and hypoxic conditions, with conflicting results in canines. Human studies have shown conflicting results with increases, decreases and no changes seen in pulmonary artery pressures of patients with a variety of clinical conditions. Research needs to be done in patients with pulmonary hypertension regarding the potential role of vasopressin during cardiac arrest in this subgroup.
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