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Pneumonia is an infection of the lungs. Many different organisms can cause it, including bacteria, viruses, and fungi.Pneumonia is a common illness that affects millions of people each year in the United States.Bacterial pneumonias tend to be the ...
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The most common mechanism by which the lung is inoculated with pathogenic organisms is through microaspiration of oropharyngeal contents, a process that occurs in otherwise healthy individuals during sleep ( Chapter 82 ). Colonization of the oral pharynx with pathogenic organisms, such as Streptococcus pneumoniae ( Chapter 303 ), can thereby lead to delivery of sufficient quantities of organisms to infect the lung.
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Pneumonia is an infection of the lung, and can be caused by nearly any class of organism known to cause human infections. These include bacteria, viruses, fungi, and parasites.
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Introduction Pneumonia has been recognized as a disease entity since remote times, with definitions of the condition traceable in ancient Greek, Roman, and Arabic writings. Definitive recognition of the etiologic role of microorganisms in pneumonia, and the identification of Streptococcus pneumoniae as the most common causative agent was only achieved roughly 120 years ago.
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The actual incidence of pneumonia in ambulatory patients is difficult to estimate because the etiologic agent is rarely identified except in clinical trials, and CAP is not currently considered a reportable disease. Each year in the United States there are 2 to 3 million cases of CAP.
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The following Clinical Topic Tour provides an overview of pneumococcal pneumonia and was adapted by materials published by the National Institute of Allergy and Infectious Diseases and the CDC.
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Pneumonia is a serious infection of the lung that impairs breathing. Small air sacs in the lung(alveoli) become filled with pus, mucus or other fluid, and cannot supply oxygen to circulating blood.
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Eosinophilic pneumonia is a group of diseases in which there is an above normal number of eosinophils in the lungs and blood.Eosinophilia is an increase in the number of eosinophils. Eosinophilic pneumonia is characterized by a large number of eos...
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Pneumococcal pneumonia is a common but serious infection and inflammation of the lungs. It is caused by the bacterium Streptococcus pneumoniae.The gram-positive, spherical bacteria, Streptococcus pneumoniae, is the cause of many human diseases, in...
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Pneumocystis pneumonia is a lung infection that occurs primarily in people with weakened immune systems—especially people who are HIV-positive. The disease agent is an organism whose biological classification is still uncertain.
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Pneumonia is an infection of the lungs that can be caused by nearly any class of organism known to cause human infections, including bacteria, viruses, fungi, and parasites. It results in an inflammatory response within the small air spaces of the...
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One of the most common pulmonary complications affecting cancer patients, pneumonia is a potentially life-threatening inflammation of one or both lungs.Serious side effects in cancer patients most often occur in the lungs and may indicate that the...
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Pneumonia is an infection of the lung that can be caused by nearly any class of organism known to cause human infections. These include bacteria, amoebae, viruses, fungi, and parasites.
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Chlamydial pneumonia refers to one of several types of pneumonia that can be caused by various types of the bacteria known as Chlamydia.Pneumonia is an infection of the lungs. The air sacs(alveoli) and/or the tissues of the lungs become swollen, a...
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Bleeding refers to the loss of blood. Bleeding can happen inside the body(internally) or outside the body(externally).
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Shock is a life-threatening condition that occurs when the body is not getting enough blood flow. This can damage multiple organs.
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Shock is a medical emergency in which the organs and tissues of the body are not receiving an adequate flow of blood. This deprives the organs and tissues of oxygen(carried in the blood) and allows the buildup of waste products.
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Shock occurs when the body''s organs and tissues do not receive an adequate flow of blood. Inadequate blood flow deprives the organs and tissues of oxygen and allows the buildup of waste products.
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Compartment syndrome is the compression of nerves and blood vessels within an enclosed space. This leads to muscle and nerve damage and problems with blood flow.Thick layers of tissue called fascia separate groups of muscles in the arms and legs f...
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