Key result
Device-mediated thoracic duct decompression decreased extravascular lung water volume by 32% (P=0.029) compared to a 46% increase in controls in a sheep model of heart failure.
Why the study?
Removal of excess fluid in acute decompensated heart failure targets the intravascular space, whereas most fluid resides in the interstitial space, necessitating evaluation of interstitial decongestion methods.
Does a device to enhance lymph flow reduce extravascular lung water in an animal model of acute-on-chronic ischemic heart failure?
Does a device to enhance lymph flow reduce extravascular lung water in an animal model of acute-on-chronic ischemic heart failure?
Device-mediated thoracic duct decompression effectively reduced extravascular lung water in an animal model of acute decompensated heart failure, suggesting a potential new approach for interstitial decongestion.
Thoracic duct drainage may aid interstitial decongestion in ADHF; animal data leave translation to patients open.
Removal of excess fluid in acute decompensated heart failure (ADHF) targets the intravascular space, whereas most fluid resides in the interstitial space. The authors evaluated an approach to interstitial decongestion using a device to enhance lymph flow. The device was deployed in sheep with induced heart failure (HF) and acute volume overload to create a low-pressure zone at the thoracic duct outlet. Treatment decreased extravascular lung water (EVLW) volume (mL/kg) (-32% ± 9%, P = 0.029) compared to controls (+46% ± 9%, P = 0.003). Device-mediated thoracic duct decompression effectively reduced EVLW. Human studies may establish device-based interstitial decongestion as a new ADHF treatment.
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Abraham et al. (2021) studied Acute decompensated heart failure. Device-mediated thoracic duct decompression vs. Controls was evaluated on Extravascular lung water (EVLW) volume (mL/kg) (p=0.029). Device-mediated thoracic duct decompression decreased extravascular lung water volume by 32% (P=0.029) compared to a 46% increase in controls in a sheep model of heart failure.
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