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Pneumonia I: Introduction

Pneumonia I: Introduction

Pneumonia is an acute respiratory infection that targets the lungs, specifically the alveoli. These tiny air sacs, essential for oxygen exchange, become engorged with pus and fluid, severely hindering breathing, decreasing oxygen absorption, and causing significant pain and discomfort during respiration.
Risk Factors
Various factors influence the likelihood of developing pneumonia. Age plays a crucial role, with infants, children under two, and individuals over 65 at increased risk due to their...

Pneumonia I: Introduction

Pneumonia I: Introduction

Pneumonia is an infection of the lower respiratory tract that leads to inflammation of the lung parenchyma, often resulting in the accumulation of inflammatory exudate in the alveoli and airways. Unlike the watery, low-protein fluid exudate in pulmonary edema, the exudate in this case is a thick fluid rich in immune cells, proteins, and debris produced during infection and inflammation.This impairs gas exchange and can lead to consolidation of lung tissue. The infection may be caused by a...

Atypical Pneumonia

Atypical Pneumonia

Atypical pneumonia, often caused by Mycoplasma pneumoniae, is a form of pulmonary infection that differs from the classical presentation of bacterial pneumonia in both its cause and clinical symptoms. Mycoplasma pneumoniae is a pleomorphic bacterium notable for its lack of a rigid cell wall. This structural characteristic imparts resistance to beta-lactam antibiotics and significantly influences the bacterium’s behavior within the human host.Other pathogens responsible for the disease include...

Pneumonia III: Complications and Assessment

Pneumonia III: Complications and Assessment

Pneumonia poses the potential for numerous complications that warrant consideration. These complications include the following:

Pneumonia V: Nursing management and Prevention

Pneumonia V: Nursing management and Prevention

Nursing management of pneumonia involves promoting airway patency, facilitating rest and conserving energy, encouraging fluid intake, maintaining nutrition, and educating patients.
The nurse must practice strict medical asepsis and adhere to infection control guidelines to minimize healthcare-associated infections.
Enhance airway patency
Position the patient correctly to facilitate drainage of the affected lung segments. Manual or mechanical percussion and vibration can also be employed.

Pneumonia II: Pathophysiology

Pneumonia II: Pathophysiology

The pathophysiology of pneumonia involves the following steps:

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Related Experiment Video

Updated: May 21, 2026

Protocol and Guidelines for Point-of-Care Lung Ultrasound in Diagnosing Neonatal Pulmonary Diseases Based on International Expert Consensus

Protocol and Guidelines for Point-of-Care Lung Ultrasound in Diagnosing Neonatal Pulmonary Diseases Based on International Expert Consensus

Published on: March 6, 2019

Occult pneumonia in a child.

Wieteke M Ploegstra¹, Bettine Onnes, Nathalie K S de Vries

¹Department of Paediatrics, Beatrix Children's Hospital, Groningen, Netherlands.

BMJ Case Reports

|June 12, 2012

Summary

Occult pneumonia, a serious lung infection, can present without respiratory symptoms in children. Elevated C-reactive protein and white blood cell counts can help predict this condition in febrile children.

Area of Science:

Pediatrics
Infectious Diseases
Radiology

Background:

Pneumonia diagnosis in children typically relies on identifying respiratory symptoms.
Febrile children without respiratory signs pose a diagnostic challenge.

Observation:

A 10-year-old boy presented with fever, vomiting, and diarrhea, but no respiratory symptoms.
Lung auscultation and percussion were normal, yet a chest radiograph revealed right upper lobe lobar pneumonia with abscess formation.

Findings:

Occult pneumonia is defined as radiologically confirmed pneumonia in febrile patients lacking respiratory symptoms.
Elevated white blood cell count and C-reactive protein levels can predict occult pneumonia in children.

Implications:

Related Experiment Videos

Last Updated: May 21, 2026

Protocol and Guidelines for Point-of-Care Lung Ultrasound in Diagnosing Neonatal Pulmonary Diseases Based on International Expert Consensus

Protocol and Guidelines for Point-of-Care Lung Ultrasound in Diagnosing Neonatal Pulmonary Diseases Based on International Expert Consensus

Published on: March 6, 2019

This case underscores the importance of considering occult pneumonia in the differential diagnosis of fever without a clear source in children.
Clinicians should utilize inflammatory markers and imaging to diagnose pneumonia even in the absence of typical respiratory symptoms.