Search results
Results from the WOW.Com Content Network
Hyperventilation syndrome is believed to be caused by psychological factors. [8] It is one cause of hyperventilation with others including infection, blood loss, heart attack, [9] hypocapnia or alkalosis due to chemical imbalances, decreased cerebral blood flow, and increased nerve sensitivity.
Hyperventilation is irregular breathing that occurs when the rate or tidal volume of breathing eliminates more carbon dioxide than the body can produce. [ 1 ] [ 2 ] [ 3 ] This leads to hypocapnia , a reduced concentration of carbon dioxide dissolved in the blood.
The presence of hyperventilation during sleep excludes any possible emotional or psychogenic causes for the sustained hyperventilation. [8] There must also be no evidence of drug or metabolic causes, including cardiac or pulmonary disease, or recent or current use of respiration-stimulating drugs.
Carbon dioxide is a gaseous product of the body's metabolism and is normally expelled through the lungs. Carbon dioxide may accumulate in any condition that causes hypoventilation, a reduction of alveolar ventilation (the clearance of air from the small sacs of the lung where gas exchange takes place) as well as resulting from inhalation of CO 2.
Freediving blackout – Loss of consciousness caused by cerebral hypoxia towards the end of a breath-hold dive, where hyperventilation and the subsequent hypocapnia is a cause; Hypercapnia – Abnormally high tissue carbon dioxide levels, increased level of carbon dioxide
Acute respiratory acidosis occurs when an abrupt failure of ventilation occurs. This failure in ventilation may be caused by depression of the central respiratory center by cerebral disease or drugs, inability to ventilate adequately due to neuromuscular disease (e.g., myasthenia gravis, amyotrophic lateral sclerosis, Guillain–Barré syndrome, muscular dystrophy), or airway obstruction ...
Carbon dioxide is a gaseous product of the body's metabolism and is normally expelled through the lungs. In acute respiratory distress syndrome (ARDS), decreasing the tidal volume on the ventilator (usually 6-8 mL/kg) to 4-6 mL/kg may decrease barotrauma by decreasing ventilatory peak airway pressures and leads to improved respiratory recovery.
Drugs can greatly influence the rate of respiration. Opioids and anesthetics tend to depress ventilation, by decreasing the normal response to raised carbon dioxide levels in the arterial blood. Stimulants such as amphetamines can cause hyperventilation. Pregnancy tends to increase ventilation (lowering plasma carbon dioxide tension below ...