5 diseases of pleura
TRANSCRIPT
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Diseases of Pleura
Dr Yog Raj Khinchi
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Pleural Effusion
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Pleural effusion: Introduction
• Collection of excess quantity of fluid in pleural space
• Inflammatory or non inflammatory causes
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Pleural effusion: Classification
• Transudates: due to diseases that affect the filtration of pleural fluid- CHF & hypoproteinemia
• Exudates: inflammation or injury increases pleural membrane permeability to proteins and various types of cells
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Pleural Effusion fluidTests Transudate Exudates
(tubercular)Exudates
(Empyema)
Physical appearance Clear Straw coloured Cloudy /Turbid
Microscopy <1000 Lympho/M
>1000 Lympho
>5000 PMNsPus cells
Pleural fluid protein < 3 gm/dl >3 gm/dl >3 gm/dlPleural fluid Protein / Serum protein
<0.5 >0.5 >0.5
Pleural fluid LDH / Serum LDH
<0.6 >0.6 >0.6
Pleural fluid pH >7.3 <7.3 <7.2Pleural fluid glucose >40 mg/dl <40 mg/dl <40 mg/dl
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Pleural Effusion fluidTests Transudate Exudates
(tubercular)Exudates
(Empyema)
Physical appearance Clear Straw coloured Cloudy /Turbid
Microscopy No Cells Predominantly Lymphocytes
Pus cells
Pleural fluid protein < 3 gm/dl >3 gm/dl >3 gm/dlPleural fluid Protein / Serum protein
<0.5 >0.5 >0.5
Pleural fluid LDH / Serum LDH
<0.6 >0.6 >0.6
Pleural fluid pH >7.2 <7.3 <7.2Pleural fluid glucose >40 mg/dl <40 mg/dl <40 mg/dl
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Pleural Effusion fluidTests Transudate Exudates
(tubercular)Exudates
(Empyema)
Physical appearance Clear Straw coloured Turbid yellow
Microscopy <1000Lympho/M
>1000 Lymphocytes
>5000 PMNPus cells
Pleural fluid protein < 3 gm/dl >3 gm/dl >3 gm/dlPleural fluid Protein / Serum protein
<0.5 >0.5 >0.5
Pleural fluid LDH / Serum LDH
<0.6 >0.6 >0.6
Pleural fluid pH >7.2 <7.3 <7.2Pleural fluid glucose >40 mg/dl <40 mg/dl <40 mg/dl
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Pleural Effusion fluidTests Transudate Exudates
(tubercular)Exudates
(Empyema)
Physical appearance Clear Straw coloured Turbid yellow
Microscopy No Cells Predominantly Lymphocytes
Pus cells
Pleural fluid protein < 3 gm/dl >3 gm/dl >3 gm/dlPleural fluid Protein / Serum protein
<0.5 >0.5 >0.5
Pleural fluid LDH / Serum LDH
<0.6 >0.6 >0.6
Pleural fluid pH >7.2 <7.3 <7.2Pleural fluid glucose >40 mg/dl <40 mg/dl <40 mg/dl
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Pleural Effusion fluidTests Transudate Exudates
(tubercular)Exudates
(Empyema)
Physical appearance Clear Straw coloured Turbid yellow
Microscopy No Cells Predominantly Lymphocytes
Pus cells
Pleural fluid protein < 3 gm/dl >3 gm/dl >3 gm/dlPleural fluid Protein / Serum protein
<0.5 >0.5 >0.5
Pleural fluid LDH / Serum LDH
<0.6 >0.6 >0.6
Pleural fluid pH >7.2 <7.3 <7.2Pleural fluid glucose >40 mg/dl <40 mg/dl <40 mg/dl
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Pleural Effusion fluidTests Transudate Exudates
(tubercular)Exudates
(Empyema)
Physical appearance Clear Straw coloured Turbid yellow
Microscopy No Cells Predominantly Lymphocytes
Pus cells
Pleural fluid protein < 3 gm/dl >3 gm/dl >3 gm/dlPleural fluid Protein / Serum protein
<0.5 >0.5 >0.5
Pleural fluid LDH / Serum LDH
<0.6 >0.6 >0.6
Pleural fluid pH >7.2 <7.3 <7.2Pleural fluid glucose >40 mg/dl <40 mg/dl <40 mg/dl
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Pleural Effusion fluidTests Transudate Exudates
(tubercular)Exudates
(Empyema)
Physical appearance Clear Straw coloured Turbid yellow
Microscopy No Cells Predominantly Lymphocytes
Pus cells
Pleural fluid protein < 3 gm/dl >3 gm/dl >3 gm/dlPleural fluid Protein / Serum protein
<0.5 >0.5 >0.5
Pleural fluid LDH / Serum LDH
<0.6 >0.6 >0.6
Pleural fluid pH >7.3 <7.3 <7.2Pleural fluid glucose >40 mg/dl <40 mg/dl <40 mg/dl
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Pleural Effusion fluidTests Transudate Exudates
(tubercular)Exudates
(Empyema)
Physical appearance Clear Straw coloured Turbid yellow
Microscopy No Cells Predominantly Lymphocytes
Pus cells
Pleural fluid protein < 3 gm/dl >3 gm/dl >3 gm/dlPleural fluid Protein / Serum protein
<0.5 >0.5 >0.5
Pleural fluid LDH / Serum LDH
<0.6 >0.6 >0.6
Pleural fluid pH >7.2 <7.3 <7.2Pleural fluid glucose >40 mg/dl <40 mg/dl <40 mg/dl
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Pleural Effusion fluidTests Transudate Exudates
(tubercular)Exudates
(Empyema)
Physical appearance Clear Straw coloured Cloudy / Turbid
Microscopy <1000Lympho/M
>1000 Lymphocytes
>5000 PMNsPus cells
Pleural fluid protein < 3 gm/dl >3 gm/dl >3 gm/dlPleural fluid Protein / Serum protein
<0.5 >0.5 >0.5
Pleural fluid LDH / Serum LDH
<0.6 >0.6 >0.6
Pleural fluid pH >7.3 <7.3 <7.2Pleural fluid glucose >40 mg/dl <40 mg/dl <40 mg/dl
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Pleural Effusion fluidTests Transudate Exudates
(tubercular)Exudates
(Empyema)
Physical appearance Clear Straw coloured Cloudy / Turbid
Microscopy <1000Lympho/M
>1000 Lymphocytes
>5000 PMNsPus cells
Pleural fluid protein < 3 gm/dl >3 gm/dl >3 gm/dlPleural fluid Protein / Serum protein
<0.5 >0.5 >0.5
Pleural fluid LDH / Serum LDH
<0.6 >0.6 >0.6
Pleural fluid pH >7.3 <7.3 <7.2Pleural fluid glucose >40 mg/dl <40 mg/dl <40 mg/dl
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Pleural Effusion fluidTests Transudate Exudates
(tubercular)Exudates
(Empyema)
Physical appearance Clear Straw coloured Cloudy / Turbid
Microscopy <1000Lympho/M
>1000 Lymphocytes
>5000 PMNsPus cells
Pleural fluid protein < 3 gm/dl >3 gm/dl >3 gm/dlPleural fluid Protein / Serum protein
<0.5 >0.5 >0.5
Pleural fluid LDH / Serum LDH
<0.6 >0.6 >0.6
Pleural fluid pH >7.3 <7.3 <7.2Pleural fluid glucose >40 mg/dl <40 mg/dl <40 mg/dl
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Pleural Effusion fluidTests Transudate Exudates
(tubercular)Exudates
(Empyema)
Physical appearance Clear Straw coloured Cloudy / Turbid
Microscopy <1000Lympho /M
>1000 Lymphocytes
>5000 PMNsPus cells
Pleural fluid protein < 3 gm/dl >3 gm/dl >3 gm/dlPleural fluid Protein / Serum protein
<0.5 >0.5 >0.5
Pleural fluid LDH / Serum LDH
<0.6 >0.6 >0.6
Pleural fluid pH >7.3 <7.3 <7.2Pleural fluid glucose >40 mg/dl <40 mg/dl <40 mg/dl
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Pleural Effusion fluidTests Transudate Exudates
(tubercular)Exudates
(Empyema)
Physical appearance Clear Straw coloured Cloudy / Turbid
Microscopy <1000Lympho/M
>1000 Lymphocytes
>5000 PMNsPus cells
Pleural fluid protein < 3 gm/dl >3 gm/dl >3 gm/dlPleural fluid Protein / Serum protein
<0.5 >0.5 >0.5
Pleural fluid LDH / Serum LDH
<0.6 >0.6 >0.6
Pleural fluid pH >7.3 <7.3 <7.2Pleural fluid glucose >40 mg/dl <40 mg/dl <40 mg/dl
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Pleural effusion: Causes
• Bacterial pneumonias - Most common• TB, CCF, Hypoproteinemia• Obstruction to lymphatic drainage• Collagen vascular disease• Malignancies, Rheumatoid arthritis• Aspiration pneumonia, traumatic• Pulmonary embolism, chylothorax
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Pleural effusion: 3 Types
1. Dry or plastic pleurisy2. Serofibrinous or serosanguineous pleurisy3. Purulent pleurisy or empyema
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1. Dry pleurisy or plastic pleurisy
Associated with • Acute bacterial infections• Tuberculosis• Connective tissue disorders- rheumatic fever
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Dry pleurisy: Pathology
• Involvement of visceral pleura with small amount of yellow serous fluid
• Adhesion between pleural surfaces• Pleural thickening• Fibrothorax due to fibrin deposition and severe
adhesions
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Dry pleurisy: Clinical manifestations
• Signs & symptoms of primary disease• Dull pleural pain, exaggerated by deep
inspiration,cough, straining, referred to shoulder and back
• Increased dullness on percussion and decreased breath sounds
• Leathery, rough inspiratory and expiratory friction rub early in the disease
• X-ray- haziness at the pleural surface or a dense, sharply demarcated shadow
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Dry pleurisy: Treatment
• Treat underlying condition• If pneumonia is not present- strapping of chest to
restrict expansion and analgesics• Strapping and cough suppressants not given if
pneumonia is present
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2. Serofibrinous pleurisy
• Infections of lungs• Inflammatory conditions of mediastinum• Less commonly with- SLE, RF, neoplasms
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Serofibrinous pleurisy: Clinical features
• Initially signs and symptoms of dry pleurisy• Asymptomatic if effusion is small• Large effusion: cough, dyspnoea, retractions,
orthopnoea, cyanosis• Shift of mediastinum away from affected side,
fullness of intercostal space, diminished tactile vocal fremitus
• Dullness to flatness on percussion• Decreased or absent breath sounds
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Serofibrinous pleurisy: Clinical features...
• In infants- bronchial breath sounds instead of absent breath sounds
• Friction rub in the early stages• X-ray: homogenous opacity obliterating the normal
pulmonary marking, obliteration of costophrenic angles and widening of interlobar fissure
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X-ray chest: Pleural Effusion
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Serofibrinous pleurisy: Treatment
• Treat underlying cause• Thoracocentesis, up to 1 Liter of fluid• Tube thoracostomy in older child with
parapneumonic effusion if pleural fluid pH<7.2 or glucose <50mg/dl
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3. Purulent pleurisy / Empyema
• Pus or microorganism in pleural fluid• Microorganism- by smear or culture In the absence of these:• pH of pleural fluid < 7.2• Lactic dehydrogenase (LDH) >1000IU/L• Glucose <than 40mg/dl• Lactate > 45mg/ml
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Empyema: Predisposing factors
• Pneumonia in ½ of cases• Preceding H/O of pustules• Blunt trauma to chest/surgery/thoracocentesis• Viral infections (chickenpox, measles)• Severe malnutrition• Neglected foreign body• Extension from subphrenic, amoebic liver abscess• CHD• Peridontal disease, steroid, immunodeficiency
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Empyema: Etiology
• Staphylococcus aureus, epidermidis• Streptococcus pneumoniae, viridans• H influenzae• Pseudomonas aeroginosa• E coli• Klebsiella aerogenes• Mycobacterium tuberculosis• Fungal/ EH (rare)
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Stages of Empyema
• Exudative (1 to 3 days): parapneumonic effusion• Fibrino purulent (4 to 14 days): polymorpho nuclear & fibrin accumulation• Organizing stage (after 14 days): fibroblasts grow and producing an inelastic membrane
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Empyema: Exudative stage
• Fluid is thin• Cellular content is low• Lungs are expandable• Pleural fluid- pH >7.3, glucose >60mg/dl, pleural fluid
/serum glucose ratio >0.5, LDH < 1000 IU/L, Gram stain and culture negative
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Empyema: Fibrino purulent stage
• pH and glucose level fall, LDH rises• Purulent and vicious, accumulation of neutrophils
and fibrin• Tendency for loculations and limiting membranes• purulent fluid, PH <7.10, glucose <40mg/dl LDH
>1000IU/L, Gram stain & culture +ve
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Empyema: Organizing stage
• Thick pleura prevent entry of anti microbial drugs in the pleural space- drug resistance
• Restrict lung movement
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Empyema: Clinical features
• Common in poor socioeconomic group• Peak incidence 0-3 years• Chills, fever, dyspnoea, chest pain, referred pain,
night sweat, malaise, cough, ↑sputum production• Pain abdomen & ileus• Tachypnoeic, anxious, pleural rub (disappear after
fluid accumulates)
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Empyema: Clinical features...
• Large fluid- fullness of intercostal spaces, diminished chest excursions
• Shift of mediastinum• Dullness to percussion, decreased air entry,
decreased tactile & vocal fremitus
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Empyema: Investigation & Diagnosis
• History and examination findings• Confirm the presence of empyema, etiological agent
& complications• Polymorph predominance, rarely leukopenia • X-ray chest- blunting of costophrenic angle,
opacification of hemithorax with mediastinal shift to opposite side , lateral decubitus for small volume
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Empyema: Investigation...
• USG- confirms, for thoracocentesis, pleural catheter placement, transudates anechoic, exudates echoic or anechoic, limiting membrane suggest loculation
• CT scan- confirm fluid, loculation, pleural thickening • Pleurocentesis / thoracocentesis
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Empyema: Aspirate Investigation
• Aspirate- Cell count and differential, Grams stain, culture, pH, protein, glucose, LDH,
AFB stain & culture • Uncomplicated parapneumonic effusion:- pH>7.3,
glucose> 60mg/dl, LDH,1000IU/L, • Complicated parapneumonic effusion:- pH<7.1,
glucose<60mg, LDH>1000IU/L, microbes on Grams stain• Tuberculous empyema:- AFB <25% cases, Pleural biopsy &
culture >90%, adenosine de aminase (ADA) >70U/L, PCR
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Empyema: Treatment
Aims
• Control infection• Drainage of pus• Expansion of lungs
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Empyema drainage
• Inter costal drainage (ICD), under water seal, large catheter inserted in the site of pus accumulation
• Loculated fluid/pus- drainage continued for 1 week• Chest tube kept till drainage is nil or < 30 ml/day
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Empyema: Inter Costal Drainage (ICD)
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Empyema: X-Ray chest
Before & After Inter costal drainage (ICD)
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Empyema: Antimicrobial therapy
Organism Drugs Alternate DurationStaph Clox + Amino 3rd gen Cephlo
+ Clox1-4wk
Pneumo PenicillinG Ceftriaxone 1-2wkH influ Cefurox/ceftrioxone
/CefotaxChlorompenic 1-2wk
Pseudom CeftazidineCefoperazone
ImpenumCilastatin, Aztreonam
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Empyema: Treatment...
• Based on culture and sensitivity• Monotherapy not recommended• In anerobic infection- Clindamycin: 6-12wk• MRSA- Vancomycin• Antibiotics till afebrile, WBC normal, thoracostomy
yield <50ml/day, X-ray clearing• H influenzae & S pneumoniae: 7-14 days• S aureus: 3-4 wk, anerobic: (variable) 6-12wk
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Empyema: Thrombolytic therapy
• Multiloculated empyema by thoracostomy tube• Streptokinase 2,50,000 unit or urokinase 1,00.000
unit in 100ml normal saline instilled through tube & clamped for 3 hrs
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Empyema: Surgical therapy
• Remains febrile and dyspnoeic after IV antibiotics and thorcostomy drain
• Pleural thickening- decortication• Non expansion of lung• Bronchopleural fistula• Video assisted thoracoscopic surgery in multi
loculated effusion• Thorocoscopic debridement and irrigation in
multiloculated effusion
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Empyema: Complications
• Bronchopleural fistula• Cutaneous fistula• Pyopneumothorax• Purulent pericarditis• Pulmonary abscess• Peritonitis secondary to rupture through diaphragm • Septic complications - meningitis, arthritis,
osteomyelitis
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Empyema: Prognosis
• In adequately treated cases prognosis is excellent
• Follow up pulmonary functions suggest that residual disease is uncommon
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Pyopneumothorax
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Pneumothorax
• Presence of gas in the Pleural space
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Pneumothorax: Classification
• Spontaneous pneumothorax Primary , Secondary
• Traumatic pneumothorax • Iatrogenic pneumothorax • Tension Pneumothorax
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Traumatic Pneumothorax
Closed Open
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Pneumothorax: Causes
• Rupture of pleural blebs
• Penetrating or non penetrating injuries
• Pneumonia• Asthma• Cystic fibrosis• COPD/ Bronchitis• Inhalation of some
toxic substances, most notably crack cocaine
• Transthoracic aspiration needle
• Thoracentesis• Central intravenous
catheters• Mechanical
Ventilation • Resuscitative efforts
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Clinical Signs & Symptoms
• Severity depends on the extent of the lung collapse. • Simple pneumothorax - asymptomatic or chest pain,
dyspnea.• Extensive pneumothorax often produces pleuritic
chest pain, dyspnea, tachypnea, cyanosis, Hyperresonance to percussion on the affected side.
• Decreased breath sounds on the involved side.• If pneumothorax due to trauma - look for contusions
or abrasions on the chest wall or a small puncture wound that does not allow free movement of air between the outside and the pleural cavity.
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Tension Pneumothorax: Signs/Symptoms• Clinical Presentation - Chest pain (90%), Dyspnea
(80%), Anxiety, Fatigue• Physical examination - Respiratory distress and/or
arrest, Cyanosis, Tracheal deviation, Pulsus paradoxus, Tachypnea, Tachycardia, Hypotension, Jugular venous distension
• Hyperresonance of the chest wall on percussion• Unilaterally decreased or absent lung sounds• Increasing resistance to providing adequate ventilation
assistance• Mental status changes, including decreased alertness
and/or consciousness• Abdominal distension
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Tension PneumothoraxLung parenchymal or
bronchial injury
one-way valve
air trapping
mediastinal structures - pushed to the
contralateral side.
mediastinum impinges on and compresses the
contralateral lung
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Pneumothorax: Differential Diagnosis
• Bronchogenic Cyst• Congenital Lung Malformations • Cystic Adenomatoid Malformation • Pleural Effusion, Pyo pneumothorax
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Investigations
• Chest X-ray• Pulse oxymetry : SpO2
• Arterial blood gas: arterial pO2
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Pneumothorax: Treatment
Without continued air leak, asymptomatic and mildly symptomatic small pneumothorax
• 100% oxygen • Sedation
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Tension Pneumothorax: Treatment
• Severe respiratory and circulatory embarrassment • Emergency Needle aspiration • Either immediately or after needle aspiration a chest
tube (ICD) should be inserted and attached to underwater seal drainage
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Decompression by Needle / ICD
• 2nd intercostal space on the mid clavicular line• Upper border of the lower rib• Needle / ICD have to be connected to the
underwater sealed drainage
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Indications for ICD
1. Pneumothorax 2. Hemothorax 3. Hemopneumothorax4. Tension pneumothorax5. Empyema 6. Chylothorax
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X-ray Pneumothorax: Before Treatment
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X-ray Pneumothorax: After Treatment