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Orthopnea
ICD-10 R06.0
ICD-9 786.02

Orthopnea or orthopnoea (Greek from ortho, straight + pnoia, breath) is shortness of breath (dyspnea) which occurs when lying flat,[1] causing the person to have to sleep propped up in bed or sitting in a chair. It is the opposite of platypnea.

It is commonly measured according to the number of pillows needed to prop the patient up to enable breathing (Example: "3 pillow orthopnea").

Causes

Orthopnea is due to increased distribution of blood to the pulmonary circulation while recumbent, [2] but usually can be attributed to a more fundamental cause.

Orthopnea is often a symptom of left ventricular heart failure and/or pulmonary edema.[3][4] It can also occur in those with asthma and chronic bronchitis, as well as those with sleep apnea or panic disorder. It is also associated with polycystic liver disease.

See also

References

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