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[6] [7] Chlorine’s odor provides early warning signs of exposure but causes olfactory fatigue or adaptations, reducing awareness of exposure at low concentrations. With increased exposure, symptoms may progress to labored respirations, severe coughing, chest tightness, wheezing, dyspnea, and bronchospasm associated with a decrease in oxygen ...
It has been described in scuba divers, long-distance swimmers, and breath-hold divers. [11] [7] Preexisting cardiac disease and high blood pressure [2] [5] [3] Hypertension correlates with greater increases in peripheral vasoconstriction on cold exposure. Combined with diastolic dysfunction due to hypertrophy of left ventricular walls causes ...
A 1998 study found a half-life of 4.1 ± 0.3 hours in young men, 7.4 ± 3.0 hours in elderly men, 4.4 ± 0.3 hours in young women, and 4.9 ± 0.6 hours in elderly women. [84] In a 2018 study in children and adolescents, the half-life of diphenhydramine was 8 to 9 hours.
Benadryl Allergy is widely used as a sleep aid among adults. While it is not marketed as an over-the-counter (OTC) sleeping aid, most versions of Benadryl contain diphenhydramine, a drug with sedative properties. [6] Diphenhydramine (Benadryl) has also been used by parents to help improve their infant's sleep habits.
Internal corrosion of full cylinder standing for a long time can potentially use up some of the oxygen in the contained gas before the diver uses the cylinder. [15] [16] Routine periodical inspection and testing of cylinders. [17] [18] Analysis of oxygen fraction of gas before use, particularly if cylinder has been stored for a long time.
Chronic solvent-induced encephalopathy (CSE) is a condition induced by long-term exposure to organic solvents, often—but not always—in the workplace, that lead to a wide variety of persisting sensorimotor polyneuropathies and neurobehavioral deficits even after solvent exposure has been removed. [33] [34] [35]
Treatment is focused on reversing the cause of inflammation and reducing symptoms. Corticosteroids may be given to reduce inflammation, often before long-term scarring occurs. Antibiotics are usually not helpful or needed, unless there is a secondary infection. Oxygen therapy may be helpful.
Chronic obstructive pulmonary disease (COPD) is a type of progressive lung disease characterized by chronic respiratory symptoms and airflow limitation. [8] GOLD 2024 defined COPD as a heterogeneous lung condition characterized by chronic respiratory symptoms (dyspnea or shortness of breath, cough, sputum production or exacerbations) due to abnormalities of the airways (bronchitis ...