Pneumonia
Most common causative organism of community-acquired pneumonia is
Streptococcus pneumoniae
Definition of lung abscess
Localized collection of pus within lung parenchyma
Lung gangrene is considered an extension of which condition.?
Severe necrotizing pneumonia / lung abscess
Condition mimicking pneumonia with sudden dyspnea and chest pain.
Pulmonary embolism
Most common complication of bacterial pneumonia is..?
Parapneumonic pleural effusion
What is the classic radiological finding of lobar pneumonia..?
Homogeneous lobar consolidation with air bronchogram
Most common predisposing factor for lung abscess is..?
Aspiration of oropharyngeal contents
What is the main pathological feature of lung gangrene..?
Massive tissue necrosis with vascular thrombosis
What is the Non-infectious cause with bilateral infiltrates & pink frothy sputum..?
Pulmonary edema
Which complication presents with sudden chest pain & breathlessness during pneumonia.. ?
Pneumothorax
Pneumonia occurring ≥48 hours after hospital admission is called
Hospital-acquired pneumonia (HAP)
Most common organism in lung abscess is
Anaerobic bacteria (Bacteroides, Fusobacterium)
What is the common organisms causing lung gangrene.. ?
Staphylococcus aureus, Klebsiella, anaerobes
Chronic condition with weight loss, night sweats, upper lobe involvement is...
Pulmonary tuberculosis
Pneumonia complication characterized by pus in pleural space is..
Empyema thoracis
Most common cause of aspiration pneumonia is.
Anaerobic bacteria from oropharynx
What is the classical X-ray finding in lung abscess..?
Cavity with air-fluid level
What is the difference between lung abscess and lung gangrene.. ?
Gangrene = multiple irregular cavities + sloughed lung tissue
What is the radiological finding favoring lung cancer over pneumonia is..?
Non-resolving consolidation / mass lesion
Why Klebsiella pneumonia commonly causes lung cavitation..?
Necrotizing infection due to thick capsule
Why elderly patients with pneumonia may not present with fever. ?
Impaired immune response → atypical presentation (confusion, delirium)
Why postural drainage is avoided in lung abscess initially.?
Risk of spread of infection to healthy lung
What is the definitive management of lung gangrene if medical therapy fails..?
Surgical resection (lobectomy / pneumonectomy)
Key feature differentiating pneumonia from ARDS is..
Pneumonia = focal infection, ARDS = diffuse non-cardiogenic edema
Most dangerous complication of severe pneumonia leading to multiorgan failure is..
Sepsis → Septic shock