Functional explanation for increased atrial natriuretic peptide in systemic sclerosis

Clinical Cardiology
E KazzamA Waldenström

Abstract

We related atrial natriuretic peptide (ANP) among 30 consecutive patients with systemic sclerosis (SScl) and 48 gender- and age-matched controls to the measurements of left ventricular (LV) function as evaluated by echocardiography and external pulse curves to determine possible causative factors for an increased level of plasma ANP. The patients had a markedly elevated plasma ANP level (239.4 +/- 59 vs. 178.2 +/- 36 pmol/l, p < 0.0005), which was not related to LV systolic function, heart rate, or blood pressure. Patients had LV hypertrophy and plasma ANP correlated directly to interventricular septal thickness (r = 0.41, p < 0.005), LV posterior wall thickness (r = 0.32, p < 0.01), and wall thickness to cavity dimension (r = 0.44, p < 0.0005), LV mass index (r = 0.40, p < 0.005). LV early filling properties were impaired, with reduction of atrial emptying index (p < 0.0005) and increased contribution of atrial contraction to LV filling. Plasma ANP correlated to atrial emptying index (r = 0.41, p < 0.0005) and to apex-cardiographic a wave (r = 0.28, p < 0.05). Plasma ANP was also related to left atrial dimension index (r = 0.27, p < 0.05), and was still related to atrial emptying index, but not to left atrial dimension, when c...Continue Reading

References

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