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  • Title: Initial hospital pulse pressure and cardiovascular outcomes in acute coronary syndrome.
    Author: El-Menyar A, Zubaid M, Almahmeed W, Alanbaei M, Rashed W, Al Qahtani A, Singh R, Zubair S, Al Suwaidi J.
    Journal: Arch Cardiovasc Dis; 2011 Aug; 104(8-9):435-43. PubMed ID: 21944145.
    Abstract:
    BACKGROUND: The association between admission pulse pressure (PP) and cardiovascular outcomes in acute coronary syndrome (ACS) is not well defined. AIM: To explore the prognostic value of initial PP in ST-segment elevation myocardial infarction (STEMI) and non-ST elevation ACS (NSTE-ACS). METHODS: Over a 5-month period in 2007, 6704 consecutive patients with ACS were categorized into five groups according to initial PP: P1, PP ≤0; P2, PP 31-40; P3, PP 41-50; P4, PP 51-60; P5, PP>60mmHg. Patient characteristics and in-hospital outcomes were analysed. RESULTS: Mean PP was lower in men versus women (55±19 vs. 61±22), young versus old (53±17 vs. 59±21), STEMI vs. NSTE-ACS (51±18 vs. 60±18) and patients who died versus survived (46±22 vs. 57±19mmHg) (P<0.001 for all). Most patients with low PP had a high Global Registry of Acute Coronary Events risk score. Compared with P5, crude odds ratios (ORs) (95% confidence intervals) for death were: P1, 9 (5.78-13.35); P2, 3 (1.71-4.06); P3, 1.5 (1.01-2.49); P4, 0.90 (0.51-1.58). After adjustment, low PP was associated with high mortality and stroke rates in ACS (adjusted ORs 7.5 [3.77-14.72] and 4.5 [1.20-18.88], respectively), high rates of recurrent ischaemia in NSTE-ACS (adjusted OR 2.8 [1.52-5.22]) and a high heart failure rate in STEMI (adjusted OR 2.1 [1.18-3.76]). Women with low PP had a higher mortality rate than men. CONCLUSION: In ACS, all blood pressure variables were significantly correlated. Low PP was an independent predictor for stroke and mortality in overall ACS. Although PP was not superior to systolic blood pressure, only low PP was an independent predictor for recurrent ischaemia in NSTE-ACS.
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