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Laryngeal papillomatosis, also known as recurrent respiratory papillomatosis (RRP) or glottal papillomatosis, is a rare medical condition in which benign tumors form along the aerodigestive tract. [ 1 ] [ 2 ] There are two variants based on the age of onset: juvenile and adult laryngeal papillomatosis. [ 3 ]
[8] [9] [10] The virus is found primarily in young children, the elderly, and immunocompromised patients with acute respiratory illness. It also has a seasonal association in temperate climates. A study performed in Amsterdam estimated the presence of HCoV-NL63 in approximately 4.7% of common respiratory illnesses. [11]
The respiratory protective devices (RPD) can protect workers only if their protective properties are adequate to the conditions in the workplace.Therefore, specialists have developed criteria for the selection of proper, adequate respirators, including the Assigned Protection Factors (APF) - the decrease of the concentration of harmful substances in the inhaled air, which (is expected) to be ...
PAPRs can provide an assigned protection factor between 25 and 1000 depending on the type, as compared to an N95 mask's assigned protection factor of 10. [ 2 ] [ 3 ] When comparing various makes and models of PAPR, the supporting documentation from each of the respective manufacturers should be consulted in order to confirm the APF value of ...
Human coronavirus OC43 [1] (HCoV-OC43) is a member of the species Betacoronavirus 1, which infects humans and cattle. [2] [3] The infecting coronavirus is an enveloped, positive-sense, single-stranded RNA virus that enters its host cell by binding to the N-acetyl-9-O-acetylneuraminic acid receptor. [4]
Pectus carinatum, sternum protruding from the chest [10] In addition to measuring the patient's respiratory rate, the examiner will observe the patient's breathing pattern: A patient with metabolic acidosis will often demonstrate a rapid breathing pattern, known as Kussmaul breathing. Rapid breathing helps the patient compensate for the ...
[9] [10] In general, acute HP is suspected to be attributed to a type III hypersensitivity while the subacute and chronic types are suspected to be caused by T cell infiltration and granuloma formation. [11] Because different people react variably to antigen exposure, the exact mechanism is unclear but genetic and host factors are likely at ...
The American Journal of Respiratory and Critical Care Medicine is a biweekly peer-reviewed medical journal published by the American Thoracic Society. It covers the pathophysiology and treatment of diseases that affect the respiratory system , as well as topics of fundamental importance to the practice of pulmonary , critical care , and sleep ...