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Necrotizing pneumonia (NP), also known as cavitary pneumonia or cavitatory necrosis, is a rare but severe complication of lung parenchymal infection. [1] [2] [3] In necrotizing pneumonia, there is a substantial liquefaction following death of the lung tissue, which may lead to gangrene formation in the lung.
Critical limb ischemia is diagnosed by the presence of ischemic rest pain, and an ulcers that will not heal or gangrene due to insufficient blood flow. [3] Insufficient blood flow may be confirmed by ankle-brachial index (ABI), ankle pressure, toe-brachial index (TBI), toe systolic pressure, transcutaneous oxygen measurement (TcpO2 ), or skin perfusion pressure (SPP).
Like other types of pneumonia, lobar pneumonia can present as community-acquired, in immune-suppressed patients, or as a nosocomial infection. However, most causative organisms are of the community-acquired type. Pathological specimens to be obtained for investigations include: Sputum for culture, AAFBS, and gram stain
A lobar pneumonia is an infection that only involves a single lobe, or section, of a lung. Lobar pneumonia is often due to Streptococcus pneumoniae (though Klebsiella pneumoniae is also possible.) [16] Multilobar pneumonia involves more than one lobe, and it often causes a more severe illness.
Over time, dry gangrene may develop into wet gangrene if an infection develops in the dead tissues. [ 16 ] Diabetes mellitus is a risk factor for peripheral vascular disease, thus for dry gangrene, but also a risk factor for wet gangrene, particularly in patients with poorly controlled blood sugar levels, as elevated serum glucose creates a ...
Hospitalization is more likely needed when lower extremity pulses are absent or when infection penetrates to the level of the fascia or more deeply. [7] [16] Infections with skin gangrene may reflect deep space infection, abscess, and tissue necrosis. When debridement is necessary, wounds are left open so that serial debridements may be ...
Angiograms of the upper and lower extremities can be helpful in making the diagnosis of Buerger's disease. In the proper clinical setting, certain angiographic findings are diagnostic of Buerger's. These findings include a "corkscrew" appearance of arteries that result from vascular damage, particularly the arteries in the region of the wrists ...
This is a subtype of Type I infections affecting the groin and perianal areas. [10] Clostridia account for 10% of overall type I infections and typically cause a specific kind of necrotizing fasciitis known as gas gangrene or myonecrosis. Type II infection: This infection accounts for 20 to 30% of cases, mainly involving the extremities.