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A heart–lung transplant is a procedure carried out to replace both failing heart and lungs in a single operation. Due to a shortage of suitable donors and because both heart and lung have to be transplanted together, it is a rare procedure; with about 94 to 108 performed annually worldwide.
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Search interest data over the past 12 months indicates that this topic periodically attracts global attention. Sudden spikes often correlate with major news events, public statements, or geopolitical developments.