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Deray, G. et al.

Atrial natriuretic peptide level and intracardiac pressure in cardiac transplant recipients.

Blood pressures and plasma atrial natriuretic peptide ( ANP) concentrations have been measured in venous and intracardiac sites in 11 patients (10 men and 1 woman) given cardiac transplants. The mean plasma ANP level was 214.4 pg.ml-1 in the superior vena cava and 281 pg.ml-1 in the right atrium. This significantly higher level was maintained in the right ventricle (269) and in the pulmonary artery (295). The level in controls was 25 pg.ml-1. Intra cardiac and mean arterial pressures were in normal range in all patients, and there was no correlation between plasma ANP level and intracardiac pressure. The data suggest that in cardiac transplant patients right atrial pressure does not have a primary role in releasing ANP. The transplanted heart is denervated and remains so for many months after operation, thus suggesting that innervation is not obligatory for ANP secretion. Further studies are required to determine the relative contribution of donor and recipient atrial tissues to ANP secretion.[1]

References

Atrial natriuretic peptide level and intracardiac pressure in cardiac transplant recipients. Deray, G., Maistre, G., Desruenne, M., Eurin, J., Barthelemy, C., Masson, F., Baumelou, A., Leger, P., Cabrol, C., Legrand, J.C. Eur. J. Clin. Pharmacol. (1990) [Pubmed]

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