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Difficult or labored breathing.



disruption of the rate and depth of respiration, accompanied by the sensation of shortness of breath.

Cardiac patients experience dyspnea both while physically exerting themselves and while subsequently resting in the horizontal position. Their condition is complicated by orthopnea, the inability to breathe except in a sitting position. In patients with cardiac diseases, attacks of severe dyspnea, which usually occur at night, are a symptom of cardiac asthma. In such cases, the dyspnea is inspiratory; that is, the patient finds it difficult to inhale. Expiratory dyspnea, difficulty in exhaling, arises when the lumina of the small bronchi and bronchioles are narrowed, as in bronchial asthma. It also arises when the elasticity of the lung tissue is lost, as in chronic emphysema of the lungs. Cerebral dyspnea is a result of direct irritation of the cerebral respiratory center by such abnormalities as tumors and hemorrhages.

References in periodicals archive ?
23 but died three days after its birth, also due to breathing difficulty.
Some people who worked near or with water or sediment in fish kill areas have suffered short- and long-term symptoms believed to be linked to Pfiesteria such as memory loss, learning impairment, breathing difficulty, nausea, lethargy, and skin lesions.
In severe cases, neurological symptoms appear within 48 hours, and may include headaches, dizziness, disorientation, seizures, breathing difficulty and extended loss of short-term memory capacity.
People being screened will learn whether they should seek a professional diagnosis for any breathing difficulty, and current asthma sufferers can evaluate whether their disease is under control.
Postoperatively, the patient did well and was without breathing difficulty.
Symptoms include coughing, breathing difficulty, lethargy and weight loss.