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What condition is indicated by abdominal paradox in a patient?

Diaphragmatic fatigue

Abdominal paradox is a clinical sign that indicates diaphragmatic fatigue or dysfunction. In this condition, the patient may exhibit unusual patterns of breathing where the abdomen moves inward during inhalation instead of outward, contradicting the normal movement expected during respiration. This occurs because the diaphragm is weak or fatigued, leading to ineffective breathing mechanics where the auxiliary muscles may be compensating for the lost function of the diaphragm.

Understanding this phenomenon is vital as it highlights a respiratory issue that can occur in various conditions, such as chronic obstructive pulmonary disease (COPD) or neuromuscular disorders. Monitoring for abdominal paradox can help clinicians gauge the severity of respiratory muscle involvement and guide interventions to support the patient.

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Effective chest expansion

Normal breathing effort

High lung compliance

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