Payhophysiology of pnemonia?
Answers: Pathophysiology
Upper panel shows a normal lung underneath a microscope. The white spaces are alveoli that contain air. Lower panel shows a lung next to pneumonia under a microscope. The alveoli are chock-a-block with inflammation and driftwood.
Upper panel shows a normal lung beneath a microscope. The white spaces are alveoli that contain air. Lower panel shows a lung near pneumonia under a microscope. The alveoli are jam-packed with inflammation and driftwood.
Pneumonia can be caused by microorganisms, irritants and unknown cause. When pneumonias are grouped this way, infectious cause are the most common type.
The symptoms of infectious pneumonia are cause by the invasion of the lungs by microorganisms and by the immune system's response to the infection. Although more than one hundred strains of microorganism can cause pneumonia, merely a few are responsible for most cases. The most common cause of pneumonia are viruses and germs. Less common cause of infectious pneumonia are fungi and parasites.
Viruses
Viruses invade cell in proclaim to reproduce. Typically, a virus reaches the lungs when airborne droplets are inhaled through the mouth and muzzle. Once in the lungs, the virus invades the cell lining the airways and alveoli. This invasion commonly leads to cell extermination, either when the virus directly kill the cells, or through a type of cell controlled self-destruction call apoptosis. When the immune system responds to the viral infection, even more lung damage occur. White blood cells, on the whole lymphocytes, activate abiding chemical cytokines which allow fluid to leak into the alveoli. This combination of cell destruction and fluid-filled alveoli interrupts the middle-of-the-road transportation of oxygen into the bloodstream.
As well as destructive the lungs, many virus affect other organs and thus disrupt many body functions. Viruses can also variety the body more susceptible to bacterial infections; for which reason bacterial pneumonia commonly complicates viral pneumonia.
Viral pneumonia is commonly caused by virus such as influenza virus, respiratory syncytial virus (RSV), adenovirus, and metapneumovirus. Herpes simplex virus is a rare effect of pneumonia except in newborn. People with immune system problems are also at risk of pneumonia cause by cytomegalovirus (CMV).
Bacteria
Bacteria typically enter the lung when airborne droplets are inhaled, but can also reach the lung through the bloodstream when at hand is an infection in another part of a set of the body. Many bacteria live surrounded by parts of the upper respiratory tract, such as the nose, mouth and sinuses, and can smoothly be inhaled into the alveoli. Once inside, bacteria may invade the spaces between cell and between alveoli through connecting pores. This invasion triggers the immune system to send neutrophils, a type of preventative white blood cell, to the lungs. The neutrophils engulf and kill the offending organisms, and also release cytokines, cause a general activation of the immune system. This lead to the fever, chills, and fatigue adjectives in bacterial and fungal pneumonia. The neutrophils, germs, and fluid from surrounding blood vessels stuff the alveoli and interrupt normal oxygen transportation.
The bacterium Streptococcus pneumoniae, a adjectives cause of pneumonia, photographed through an electron microscope.
The bacterium Streptococcus pneumoniae, a adjectives cause of pneumonia, photographed through an electron microscope.
Bacteria normally travel from an infected lung into the bloodstream, causing serious or even deadly illness such as septic shock, near low blood pressure and damage to multiple parts of the body including the brain, kidneys, and heart. Bacteria can also travel to the nouns between the lungs and the chest wall (the pleural cavity) causing a complication call an empyema.
The most common cause of bacterial pneumonia are Streptococcus pneumoniae, Gram-positive bacteria and "atypical" germs. The terms "Gram-positive" and "Gram-negative" refer to the bacteria's color (purple or red, respectively) when stained using a process call the Gram stain. The term "atypical" is used because atypical germs commonly affect healthier empire, cause largely less severe pneumonia, and respond to different antibiotics than other germs.
The types of Gram-positive bacteria that make happen pneumonia can be found in the muzzle or mouth of many athletic people. Streptococcus pneumoniae, habitually called "pneumococcus", is the most adjectives bacterial cause of pneumonia contained by all age groups except newborn infants. Another essential Gram-positive cause of pneumonia is Staphylococcus aureus, beside Streptococcus agalactiae being an considerable cause of pneumonia contained by newborn babies. Gram-negative bacteria wreak pneumonia less frequently than gram-positive microbes. Some of the gram-negative bacteria that incentive pneumonia include Haemophilus influenzae, Klebsiella pneumoniae, Escherichia coli, Pseudomonas aeruginosa and Moraxella catarrhalis. These bacteria habitually live in the stomach or intestines and may enter the lungs if vomit is inhaled. "Atypical" microbes which cause pneumonia include Chlamydophila pneumoniae, Mycoplasma pneumoniae, and Legionella pneumophila.
Fungi
Fungal pneumonia is extraordinary, but it may occur surrounded by individuals with immune system problems due to AIDS, immunosuppresive drugs, or other medical problems. The pathophysiology of pneumonia cause by fungi is similar to that of bacterial pneumonia. Fungal pneumonia is most often cause by Histoplasma capsulatum, Cryptococcus neoformans, Pneumocystis jiroveci, and Coccidioides immitis. Histoplasmosis is most common surrounded by the Mississippi River basin, and coccidioidomycosis surrounded by the southwestern United States.
Parasites
A variety of vermin can affect the lungs. These parasites typically enter the body through the skin or by self swallowed. Once inside, they travel to the lungs, usually through the blood. There, as in other cases of pneumonia, a combination of cellular destruction and immune response cause disruption of oxygen transportation. One type of white blood cell, the eosinophil, responds vigorously to parasite infection. Eosinophils within the lungs can lead to eosinophilic pneumonia, thus complicating the underlying parasitic pneumonia. The most adjectives parasites cause pneumonia are Toxoplasma gondii, Strongyloides stercoralis, and Ascariasis.
Idiopathic
Idiopathic interstitial pneumonias (IIP) are a class as diffuse lung diseases. In some types of IIP, e.g. some types of usual interstitial pneumonia, the cause, indeed, is unknown or idiopathic. In some types of IIP the motive of the pneumonia is known, e.g. desquamative interstitial pneumonia is cause by smoking, and the name is a misnomer.
How roughly speaking "Pathophysiology Of Pneumonia". pneumonia is the infection (bacterial or viral and in the immune compromise pt potentially (fungal) contained by the lung and or the inflammatory processs in your lung. Lay relatives thinks that pneumonia is commonly a infectious proces contained by the lung.
Pathophysiolgy usually occurs contained by the lower or middle lobes of the lungs filling the alveoli (air sac near secretions and fluids) This is why Xray are white where on earth the infection is located. It may impact the upper lobes near the clavicle nouns (more common for TB) Other produce are aspiration (IE vomit chemicals which cause inflammation)
Sign and symptoms Fever, shortness of breath, possibly positional shortness of breath,
Auscultation (using stethoscope) crackles moist on the artificial side.
Percussion ( tapping of fingers on the chest (sound more dull vs commonplace hollow drum of normal lung nouns.
White blood cells would be elevated (cells fray infections)
Xray as i mention white vs the normal dimness area of lung tissue.