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The original published definition read as: "Any extended, finely granular pattern of pulmonary opacity within which normal anatomic details are partly obscured; from a fancied resemblance to etched or abraded glass." [23] It was again included in an updated glossary by the Fleischner Society in 2008 with a more detailed definition. [24]
Bronchiolitis obliterans results in worsening shortness of breath, wheezing, and a dry cough.The symptoms can start gradually, or severe symptoms can occur suddenly. [9] [10] These symptoms represent an obstructive pattern that is non-reversible with bronchodilator therapy, and need to be related to various lung insults. [11]
Decreased respiratory effort: Central nervous system impairment leads to decreased respiratory effort. The respiratory center of the brain is located in the pons and medulla and is primarily driven by elevated carbon dioxide levels in the blood ( hypercapnia ) with decreased oxygen levels ( hypoxemia ) serving as a less potent stimulus. [ 9 ]
Symptoms can include cough, dyspnea (shortness of breath), chest pain, hemoptysis (coughing up blood) and sinus tachycardia (a fast heart rate). [4] Risk factors for septic pulmonary emboli include IV drug use, implanted prosthetic devices (like central lines, pacemakers, and right-sided heart valves), and septic thrombophlebitis (a blood clot ...
The attenuation in the signal of ground motion intensity plays an important role in the assessment of possible strong groundshaking. A seismic wave loses energy as it propagates through the earth (seismic attenuation). This phenomenon is tied into the dispersion of the seismic energy with the distance. There are two types of dissipated energy:
The signs and symptoms of Peripheral mononeuropathy and neuropathy vary as a result of the types of individual and/or nerve areas affected. There are three types of nerve damage, including: "motor nerve damage, sensory nerve damage, and autonomic nerve damage". [2]
Infections of the central nervous system may also be associated with decreased LOC; for example, an altered LOC is the most common symptom of encephalitis. [14] Neoplasms within the intracranial cavity can also affect consciousness, [12] as can epilepsy and post-seizure states. [9] A decreased LOC can also result from a combination of factors. [12]
However, if blood flow cannot be increased or if doubled blood flow does not correct the problem, symptoms of cerebral hypoxia will begin to appear. Mild symptoms include difficulties with complex learning tasks and reductions in short-term memory. If oxygen deprivation continues, cognitive disturbances, and decreased motor control will result. [6]