What causes left lower lobe pneumonia?

Published by Anaya Cole on

What causes left lower lobe pneumonia?

Most cases of lobar pneumonia are community acquired and caused by Streptococcus pneumoniae. Other causes include Klebsiella pneumoniae, Legionella pneumophila, Haemophilus influenzae, and Mycobacterium tuberculosis.

What is the pathophysiology of aspiration pneumonia?

The pathological process of aspiration pneumonia occurs when the normal defense mechanisms fail in a predisposed individual. The entry of fluid into the bronchi and alveolar space triggers an anti-inflammatory reaction with the release of proinflammatory cytokines, tumor necrosis factor-alpha, and interleukins.

What is left lobe pneumonia?

It is a serious infection in which the air sacs fill with pus and other liquid. Lobar pneumonia affects one or more sections (lobes) of the lungs. Bronchial pneumonia (also known as bronchopneumonia) affects patches throughout both lungs.

What is the difference between aspiration and aspiration pneumonia?

Aspiration pneumonitis (Mendelson’s syndrome) is a chemical injury caused by the inhalation of sterile gastric contents, whereas aspiration pneumonia is an infectious process caused by the inhalation of oropharyngeal secretions that are colonized by pathogenic bacteria.

What is the difference between aspiration pneumonia and pneumonia?

Definition. Pneumonia is inflammation (swelling) and infection of the lungs or large airways. Aspiration pneumonia occurs when food or liquid is breathed into the airways or lungs, instead of being swallowed.

What is the best way to identify the pathologic agent of pneumonia?

Nucleic acid detection tests (NATs), such as polymerase chain reaction (PCR), had been established for all major pneumonia pathogens and were the single biggest development in the area, although widespread uptake by diagnostic laboratories had been slow.

What type of pneumonia is most common?

The most common type of bacterial pneumonia is called pneumococcal pneumonia. Pneumococcal pneumonia is caused by the Streptococcus pneumoniae germ that normally lives in the upper respiratory tract. It infects over 900,000 Americans every year.

What is red and GREY hepatization?

Red hepatization is when there are red blood cells, neutrophils, and fibrin in the pulmonary alveolus/ alveoli; it precedes gray hepatization, where the red cells have been broken down leaving a fibrinosuppurative exudate.

What is the pathophysiology of pneumonia?

There is an intricate balance between the organisms residing in the lower respiratory tract and the local and systemic defense mechanisms (both innate and acquired) which when disturbed gives rise to inflammation of the lung parenchyma, i.e., pneumonia. Common defense mechanisms that are compromised in the pathogenesis of pneumonia include:

What is pneumonia?

Introduction Pneumonia has been defined as an infection of the lung parenchyma. Rather than looking at it as a single disease, health care professionals must remember that pneumonia is an umbrella term for a group of syndromes caused by a variety of organisms resulting in varied manifestations and sequelae.

Which defense mechanisms are compromised in the pathogenesis of pneumonia?

Common defense mechanisms that are compromised in the pathogenesis of pneumonia include: Systemic defense mechanisms like humoral and complement-mediated immunity that is compromised in diseases like common variable immunodeficiency (CVID), X-linked agammaglobulinemia (inherited), and functional asplenia (acquired).

What are the causes of bacterial pneumonia?

The most common cause of bacterial pneumonia in the U.S. is Streptococcus pneumoniae. This type of pneumonia can occur on its own or after you’ve had a cold or the flu. It may affect one part (lobe) of the lung, a condition called lobar pneumonia.

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