American journal of respiratory and critical care medicine
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Am. J. Respir. Crit. Care Med. · Dec 2024
Air Hunger Far Exceeds Dyspnea Sense of Effort During Mechanical Ventilation and a Weaning Trial.
No systematic investigation into dyspnea in patients receiving prolonged ventilation (>21 days) after recovering from critical-illness has been published. ⋯ Patients developed increases in dyspnea and PtcCO2 but unchanged minute ventilation and work of breathing during an unassisted-breathing trial; patients selected air-hunger descriptors overwhelmingly over excessive effort; the observations support the belief that air hunger results from heightened respiratory-center stimulation combined with incapacity to increase minute ventilation.
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Am. J. Respir. Crit. Care Med. · Dec 2024
Prevalence and Clinical Correlates of Radiologically Detected Coronary Artery Disease in COPD: A Cross-Sectional Observational Study.
Unrecognised coronary artery disease (CAD) may contribute to adverse outcomes in chronic obstructive pulmonary disease (COPD). Improved identification of at-risk groups could inform better preventative care. We aimed to evaluate the burden and relationships of radiologically detectable CAD in COPD, establish frequency of occult disease, and examine potential cardiovascular screening methods. ⋯ CTCA-detected CAD is common in patients with COPD, correlating poorly with symptoms and risk scores. Radiological screening, using CT thorax, might improve detection and outcomes in this patient group.