Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0020440 (hypercapnia)
 7,939 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

The host of chronic respiratory abnormalities responsible for an abnormal hematosis or for a handicap can be termed generically as chronic respiratory insufficiency. Hypoxemia can be the consequence of perturbations of oxygen transfer (fibrosis), of abnormal ventilation-perfusion ratios (venous admixture, chronic obstructive pulmonary disease [COPD]), or of hypoventilation (neuromuscular diseases). Hypercapnia can stem from hypoventilation (neuromuscular diseases), or from abnormal ventilation-perfusion ratios (dead space effect) (COPD). An imbalance between the capacity of the respiratory muscle to produce negative inspiratory pressures and the load they are faced with is a source of hypercapnia, and of dyspnoea and handicap independently of hematosis (COPD, neuromuscular diseases). The effects of hypoxemia on cellular functions make chronic respiratory insufficiency a systemic disease.
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PMID:[Physiopathology of chronic respiratory insufficiency]. 1146 4

It has been recognized that chronic obstructive pulmonary disease (COPD) is a systemic disease which has been shown to negatively affect the cardiovascular and autonomic nerve system. The complexity of the physiologic basis by which autonomic dysfunction occurs in patients with COPD is considerable and the knowledge in this field remains elementary. The purpose of this review is to provide an overview of important potential mechanisms which might affect the autonomic nervous system in patients with COPD. This review aims to summarize the basic research in the field of autonomic dysfunction in patients with COPD. In COPD patients the activity of sympathetic nerves may be affected by recurrent hypoxemia, hypercapnia, increased intrathoracic pressure swings due to airway obstruction, increased respiratory effort, systemic inflammation and the use of betasympathomimetics. Furthermore, experimental findings suggest that autonomic dysfunction characterized by a predominance of sympathetic activity can significantly modulate further inflammatory reactions. The exact relationship between autonomic dysfunction and health status in COPD remains to be elucidated. Treatment aimed to restore the sympathovagal balance towards a reduction of resting sympathetic activity may modulate the inflammatory state, and possibly contributes to improved health status in COPD.
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PMID:Autonomic dysfunction in patients with chronic obstructive pulmonary disease (COPD). 2226 50

Chronic obstructive pulmonary disease (COPD) is a systemic disease that affects not only the respiratory system. Sex hormones deficiency in men can be correlated with the COPD stages and make a negative contribution during its progression. Up to date, there are no long-term trials evaluating the effects of androgens on the parameters of respiratory function in patients with COPD. Changes of testosterone levels in patients with COPD correlate with forced expiratory volume, and hypoxemia and hypercapnia levels. Glucocorticosteroids exacerbate androgen deficiency in patients with COPD, and the use of hormone replacement therapy with testosterone in these patients is justified. Androgens, in particular drug nebido, testosterone depot, can be effectively used in treatment and rehabilitation of patients with COPD.
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PMID:[Hypogonadism and chronic obstructive pulmonary disease]. 2443 55

Over the past few decades, chronic obstructive lung disease (COPD) has been considered a disease of the lungs, often caused by smoking. Nowadays, COPD is regarded as a systemic disease. Both physical effects and effects on brains, including impaired psychological and cognitive functioning, have been demonstrated. Patients with COPD may have cognitive impairment, either globally or in single cognitive domains, such as information processing, attention and concentration, memory, executive functioning, and self-control. Possible causes are hypoxemia, hypercapnia, exacerbations, and decreased physical activity. Cognitive impairment in these patients may be related to structural brain abnormalities, such as gray-matter pathologic changes and the loss of white matter integrity which can be induced by smoking. Cognitive impairment can have a negative impact on health and daily life and may be associated with widespread consequences for disease management programs. It is important to assess cognitive functioning in patients with COPD in order to optimize patient-oriented treatment and to reduce personal discomfort, hospital admissions, and mortality. This paper will summarize the current knowledge about cognitive impairment as extrapulmonary feature of COPD. Hereby, the impact of smoking on cognitive functioning and the impact of cognitive impairment on smoking behaviour will be examined.
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PMID:COgnitive-pulmonary disease. 2473 69