left ventricular dysfunction

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Value of Plethysmographic Pulse Amplitude Ratio With Valsalva Maneuver in Identifying Left Ventricular Dysfunction During COPD Exacerbation
Hamdi Boubaker, Mohamed Habib Grissa, Haithem Debbabi, Kaouthar Beltaief, Zohra Dridi, Mohamed Fadhel Najjar, Wahid Bouida, Riadh Boukef, Soudani Marghli and Semir Nouira

Respiratory Care April 2016, 61 (4) 439-446; DOI: https://doi.org/10.4187/respcare.04091