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  • Title: [Atrial natriuretic factor in cardiogenic shock, in hypovolemic shock and in the bradycardia-hypotension syndrome following acute myocardial infarction].
    Author: Fontana F, Spagnolo N, Capelli M, Bernardi P.
    Journal: G Ital Cardiol; 1989 Aug; 19(8):686-93. PubMed ID: 2530127.
    Abstract:
    The aim of this paper was to study plasma atrial natriuretic factor, renin activity, aldosterone and antidiuretic hormone in low-output heart failure syndromes such as cardiogenic shock, hypovolemic shock and hypotension with bradycardia syndrome. A total of 30 patients were investigated: 10 with cardiogenic shock due to acute myocardial infarction of the anterior wall (systolic and diastolic blood pressure 56.0 +/- 3.7/40.5 +/- 2.0 mmHg; heart rate 119.7 +/- 1.2 beats/min; central venous pressure 16.2 +/- 0.6 cmH2O) (I group), 10 with hypovolemic shock induced by melena in peptic ulcer (systolic and diastolic blood pressure 74.5 +/- 1.5/57.5 +/- 1.7 mmHg; heart rate 111.0 +/- 1.4; central venous pressure 6.3 +/- 0.5 cmH2O) (II group), 10 with hypotension with bradycardia syndrome which occurred in patients during acute myocardial infarction of the inferior wall (systolic and diastolic blood pressure 71.9 +/- 2.0/58.0 +/- 2.6 mmHg; heart rate 52.0 +/- 2.2 beats/min; central venous pressure 4.6 +/- 0.4 cmH2O) (III group). Plasma atrial natriuretic factor values were measured using radioimmunoassay after chromatographic pre-extraction; plasma renin activity, aldosterone and antidiuretic hormone values were calculated using radioimmunoassay. Circulating atrial natriuretic factor was significantly (p less than 0.01) higher in patients with cardiogenic shock (102.4 +/- 7.4 pg/ml) than in healthy volunteers (8.4 +/- 0.3 pg/ml). In the former there was a positive correlation between atrial natriuretic factor and central venous pressure values. Atrial natriuretic factor and central venous pressure values in the IInd and IIIrd groups of patients were in the normal range.(ABSTRACT TRUNCATED AT 250 WORDS)
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