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- W1937755352 abstract "Patients with heart failure (HF) have left ventricular dysfunction and reduced mean arterial pressure (MAP). Increased adrenergic drive causes vasoconstriction and vessel resistance maintaining MAP, while increasing peripheral vascular resistance and conduit vessel stiffness. Increased pulse pressure (PP) reflects a complex interaction of the heart with the arterial and venous systems. Increased PP is an important risk marker in patients with chronic HF (CHF). Non-invasive ventilation (NIV) has been used for acute decompensated HF, to improve congestion and ventilation through both respiratory and hemodynamic effects. However, none of these studies have reported the effect of NIV on PP.The objective of this study was to determine the acute effects of NIV with CPAP on PP in outpatients with CHF.Following a double-blind, randomized, cross-over, and placebo-controlled protocol, twenty three patients with CHF (17 males; 60±11 years; BMI 29±5 kg/cm2, NYHA class II, III) underwent CPAP via nasal mask for 30 min in a recumbent position. Mask pressure was 6 cmH2O, whereas placebo was fixed at 0-1 cmH2O. PP and other non invasive hemodynamics variables were assessed before, during and after placebo and CPAP mode.CPAP decreased resting heart rate (Pre: 72±9; vs. Post 5 min: 67±10 bpm; p<0.01) and MAP (CPAP: 87±11; vs. control 96±11 mmHg; p<0.05 post 5 min). CPAP decreased PP (CPAP: 47±20 pre to 38±19 mmHg post; vs. control: 42±12 mmHg, pre to 41±18 post p<0.05 post 5 min).NIV with CPAP decreased pulse pressure in patients with stable CHF. Future clinical trials should investigate whether this effect is associated with improved clinical outcome." @default.
- W1937755352 created "2016-06-24" @default.
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- W1937755352 date "2014-01-01" @default.
- W1937755352 modified "2023-09-27" @default.
- W1937755352 title "Acute Effects of Continuous Positive Airway Pressure on Pulse Pressure in Chronic Heart Failure" @default.
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- W1937755352 doi "https://doi.org/10.5935/abc.20140006" @default.
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