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WikiDoc Resources for Platypnea


Most recent articles on Platypnea

Most cited articles on Platypnea

Review articles on Platypnea

Articles on Platypnea in N Eng J Med, Lancet, BMJ


Powerpoint slides on Platypnea

Images of Platypnea

Photos of Platypnea

Podcasts & MP3s on Platypnea

Videos on Platypnea

Evidence Based Medicine

Cochrane Collaboration on Platypnea

Bandolier on Platypnea

TRIP on Platypnea

Clinical Trials

Ongoing Trials on Platypnea at Clinical

Trial results on Platypnea

Clinical Trials on Platypnea at Google

Guidelines / Policies / Govt

US National Guidelines Clearinghouse on Platypnea

NICE Guidance on Platypnea


FDA on Platypnea

CDC on Platypnea


Books on Platypnea


Platypnea in the news

Be alerted to news on Platypnea

News trends on Platypnea


Blogs on Platypnea


Definitions of Platypnea

Patient Resources / Community

Patient resources on Platypnea

Discussion groups on Platypnea

Patient Handouts on Platypnea

Directions to Hospitals Treating Platypnea

Risk calculators and risk factors for Platypnea

Healthcare Provider Resources

Symptoms of Platypnea

Causes & Risk Factors for Platypnea

Diagnostic studies for Platypnea

Treatment of Platypnea

Continuing Medical Education (CME)

CME Programs on Platypnea


Platypnea en Espanol

Platypnea en Francais


Platypnea in the Marketplace

Patents on Platypnea

Experimental / Informatics

List of terms related to Platypnea

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]


Platypnea refers to shortness of breath (dyspnea) that is relieved when lying down,[1] and worsens when sitting or standing up. It is the opposite of orthopnea. The word is derived from the Greek platus (= flat) and pnoia (=breath).


  1. Left atrial thrombus
  2. Left atrial tumors
  3. Pulmonary arteriovenous fistula

Platypnea is due to either hepatopulmonary syndrome or an anatomical cardiovascular defect increasing positional right-to-left shunting (bloodflow from the right to the left part of the circulatory system). These defects include rare syndromes in which the venous blood from the liver does not pass through the lungs, or if venous blood from the portal circulation reaches the inferior vena cava without passing through the liver (Abernethy malformation, type 1).

Insufficiency of abdominal muscles causes lower diaphragm position and dyspnea. In clinostatism, abdominal organs push the diaphragm in its normal, upper position, reducing the respiratory effort.


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