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Table 3: Relative contraindications for body plethysmography (BP). |
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Recent heart attack (< 4 weeks) |
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Heart failure |
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Cardiovascular instability |
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Tachycardia at rest (HR > 130 bpm) |
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Chest or abdominal surgery < 4 weeks; eye or ear surgery < 8 weeks |
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Active pulmonary tuberculosis |
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Acute respiratory tract infections in the last two weeks |
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Hemoptysis |
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Aneurysm (of large arteries, cerebral) |
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Late pregnancy (third trimester) or complicated pregnancy |
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Poor health |
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Tracheostomy |
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Chest tube |
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Continuous requirement for supplemental oxygen that cannot be discontinued during the test |
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Subject conditions that do not allow him to be introduced into the cabin, such as claustrophobia, body paralysis, parenteral solutions or medical devices that cannot be introduced into the plethysmograph cabin |
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HR = heart rate. bpm = beats per minute. |