No abstract available
MeSH terms
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Echocardiography / methods*
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Embolism / diagnosis*
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Embolism / physiopathology
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Female
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Humans
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Middle Aged
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Pulmonary Embolism / diagnosis
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Pulmonary Embolism / physiopathology
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Time Factors
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Valsalva Maneuver
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Ventilation-Perfusion Ratio