An inflammatory reaction may occur in the alveoli, producing exudates that interfere with the diffusion of oxygen and carbon dioxide.Pneumonia arises from normal flora present in patients whose resistance has been altered or from aspiration of flora present in the oropharynx.Having an idea about the disease process helps the patient understand the treatment regimen and its importance, increasing patient compliance. Aspiration pneumonia may occur in the community or hospital setting.The most common form of aspiration pneumonia is a bacterial infection from aspiration of bacteria that normally reside in the upper airways.Aspiration pneumoniarefers to the pulmonary consequences resulting from entry of endogenous or exogenous substances into the lower airway.Pneumonia in immunocompromised hosts may be caused by the organisms also observe in HAP and CAP.Patients who are immunocompromised commonly develop pneumonia from organisms of low virulence.Pneumonia in immunocompromised hosts includes Pneumocystis pneumonia, fungal pneumonias and Mycobacterium tuberculosis.The usual presentation of HAP is a new pulmonary infiltrate on chest x-ray combined with evidence of infection.Common microorganisms that are responsible for HAP include Enterobacter species, Escherichia coli, influenza, Klebsiella species, Proteus, Serratia marcescens, S.HAP is the most lethal nosocomial infection and the leading cause of death in patients with such infections.HAP is also called nosocomial pneumonia and is defined as the onset of pneumonia symptoms more than 48 hours after admission in patients with no evidence of infection at the time of admission.Viruses are the most common cause of pneumonia in infants and children.Pneumonia is the most common cause of CAP in people younger than 60 years of age.Only in 50% of the cases does the specific etiologic agent become identified.influenza, Legionella, and Pseudomonas aeruginosa. The causative agents for CAP that needs hospitalization include streptococcus pneumoniae, H.CAP occurs either in the community setting or within the first 48 hours after hospitalization.Pneumonia is classified into four: community-acquired pneumonia (CAP) and hospital-acquired pneumonia (HAP), pneumonia in the immunocompromised host, and aspiration pneumonia. Pneumonitis is a more general term that describes the inflammatory process in the lung tissue that may predispose and place the patient at risk for microbial invasion.Pneumonia is an inflammation of the lung parenchyma caused by various microorganisms, including bacteria, mycobacteria, fungi, and viruses.Pneumonia is one of the most common respiratory problems and it affects all stages of life. Respiratory diseases are rampant today because it is easier spread in crowded areas. Pneumonia in the Immunocompromised Host.Learn about the nursing care management of patients with pneumonia.
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