chestdrains&...
TRANSCRIPT
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Chest Drains (Under Water Sealed Drains)
• Dr Carlos Pilasi • Dr Amir Ashrafi
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Introduc;on
Chest drains also known as under water sealed drains (UWSD) are used for:
• draining • restora;on of nega;ve pressure in the thoracic cavity.
Why underwater seal?
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Physiology: inspira;on
• Diaphragm • Pressure equaliza;on • intrapulmonary pressure
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Breathing: exhala;on • phrenic nerve
• The diaphragm relaxes • Volume reduc;on
• Increased intrapulmonary pressure
• Air flows out
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Pleural anatomy Parietal pleura
Visceral pleura
Normal Pleural Fluid Quan0ty: Approx. 25mL per lung
Lung
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Pleural physiology
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When pressures are disrupted
Intrapulmonary pressure: -‐4cmH20
Intrapleural pressure: -‐8cmH20
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Indica;ons for Inser;on of a Chest Drain
• Post opera;vely • Pneumothorax • Haemothorax • Empyema • Chylothorax • Pleural effusions
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Contraindica;ons for Inser;on of a Chest Drain
Absolute: • When its not indicated • Need for immediate thoracotomy
Rela;ve: • Coagulopathy • Platelet Defect
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Principles of inser;ng a Chest Drain
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Chest Wall Anatomy
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Safe Triangle
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How to do a Tube Thoracostomy
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Steps of puYng a chest drain
Elegir el si;o
Explorar con el dedo
Colocar el tubo con la pinza
Suturar el tubo al tórax
Photos courtesy trauma.org
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Post inser;on
• Connect to UWSD • Confirm func;onality • Repeat CXR • Document the procedure
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Needle Thoracostomy
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How to do a Needle Thoracostomy
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• There are a lot of reasons why the needle could fail to relieve a tension pneumothorax (or to only temporarily relieve a tension pneumothorax):
• Needle may be too short to enter the thorax
• Catheter could kink, allowing reaccumula;on of air in the thorax.
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Finger Thoracostomy The use of a “simple thoracostomy” or “finger thoracostomy” was ini;ally described in the literature in 1995.
• Method similar to Tube Thoracostomy without puYng a drain
• Probably the best method in a crushing pa;ent.
• Easier to teach and perform
• No foreign body, less complica;ons • No published studies to compare to other methods
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Open pneumothorax: Secondary to penetra;ng wound.
Diagnosis: • Air may be heard passing in and out of the wound with breathing.
Treatment: • High flow oxygen • Analgesia • Occlude wound with dressing (3 sides only to
allow air to escape during expira;on) • Immediate Inser;on of chest drain
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Air Leak (bubbling)
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Oscilla;on (swing)
• The water in the water seal chamber will rise and fall (swing) with respira;ons. This will diminish as the pneumothorax resolves.
• Watch for unexpected cessa;on of swing as this may indicate the tube is blocked or kinked.
• Cardiac surgical pa;ents may have some of their drains in the medias;num in which case there will be no swing in the water seal chamber.
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Don’t Forget
Pain • Chest tubes are painful as
the parietal pleura is very sensi;ve. Pa;ents require regular pain relief
• Pain assessment should be
conducted frequently and documented
Physiotherapy
Drain inser0on site • Observe for signs of
infec;on and inflamma;on and document findings
• Check dressing is clean and intact
• Observe sutures remain intact & secure (par;cularly long term drains where sutures may erode over ;me)
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PITFALLS
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Indica;ons of Removal of Chest Drains
• Absence of an air leak (pneumothorax) • Drainage diminishes to lihle or nothing
• No evidence of respiratory compromise • Chest x-‐ray showing lung re-‐expansion
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