• Internal medicine · Jun 2024

    Case Reports

    A Case Report of Mixed-type Dyspnoea Diagnosed via Non-invasive and Invasive Cardiopulmonary Exercise Tests.

    • Yuta Takamura, Tomohiro Kaneko, Nobuyuki Kagiyama, Taishi Dotare, Tsutomu Sunayama, Taisuke Nakade, Azusa Murata, Hirohisa Endo, Shunsuke Kuroda, Yuya Matsue, Masaru Obokata, and Tohru Minamino.
    • Department of Cardiovascular Biology and Medicine, Juntendo University Graduate School of Medicine, Japan.
    • Intern. Med. 2024 Jun 15; 63 (12): 173317371733-1737.

    AbstractA gas exchange analysis with the cardiopulmonary exercise test is effective in discriminating non-cardiogenic components of limited exercise tolerance and is important for use in combination with the diastolic stress test. An 80-year-old woman with progressive exertional dyspnoea, hypertension, and untreated bronchial asthma was diagnosed with heart failure with a preserved ejection fraction by invasive testing. Diuretics were initiated, which resulted in partial symptom improvement. A subsequent non-invasive test revealed a reduced breathing reserve, suggesting exertional dyspnoea complications linked to lung disease. Bronchodilators were administered, which further improved the symptoms.

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