Causes of Orthopnea - Differential Diagnosis Framework
• Fear and Anxiety
• Pleural Effusion
• Ascites
• COPD
• Hypothyroidism/Hyperthyroidism
• URTI
• Pulmonary Edema
• Severe Pneumonia
• Obesity/SIeep apnea
• Hypothyroidism: Cardiogenic/Noncardicgenic pulmonary edema, Diaphragmatic weakness
• Hyperthyroidism: Cardiogenic pulmonary edema, Diaphragmatic pulmonary edema
• Bilateral Diaphragmatic paralysis: Trauma, Surgery, Radiation, Cervical manipulation, CNS lesion (ALS, MS, Polio), PNS lesion (Brachial plexus neuropathy, GBS, CIDP), Myopathies, Compressive mediastinal tumors
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