StayCurrentMD · Spontaneous Pneumothorax: Update Course 2014
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Video15 min·Published Sep 2014Older

Spontaneous Pneumothorax: Update Course 2014

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What the experts said30 expert statements · 10 host summaries
Ultrasound can sometimes be misleading in distinguishing pleural effusion from intraparenchymal disease, requiring trust in ultrasound technician skill and correlation with CT when findings are discordant.
Clinical
Intraparenchymal necrotic lung disease may require surgery a week or two later when the lung falls apart and develops an effusion and fistula.
Clinical
For a 5-10% apical pneumothorax in a minimally symptomatic patient, observation with oxygen is appropriate initial management.
Clinical
There is debate about whether oxygen therapy for pneumothorax actually works, though it is commonly used.
Opinion
Simple aspiration of small pneumothorax may cause more trouble and result in a bigger pneumothorax.
Clinical
Many pneumothorax patients never show an air leak after chest tube placement.
Clinical
If simple aspiration is performed, leaving a catheter overnight may prevent the need for two procedures in patients who fail aspiration.
Clinical
Needle aspiration of a small apical pneumothorax may result in a larger pneumothorax.
Clinical
Simple aspiration is not well studied in children under 16 years old due to the rarity of spontaneous pneumothorax in this age group.
Epidemiological
Patients with spontaneous pneumothorax typically have a very asthenic, thin chest configuration on X-ray.
Clinical
Every spontaneous pneumothorax patient has blebs in the upper part of the lung.
Clinical
CT is obtained to evaluate the contralateral side for blebs, which informs counseling about future risk and may guide decision for prophylactic intervention.
Clinical
If CT shows contralateral blebs, a future pneumothorax on that side can be treated directly with VATS without wasting time on chest tube placement.
Clinical
Before the era of VATS, the rule was to wait for a second pneumothorax before performing thoracotomy for bleb resection and pleural abrasion.
Clinical
In the current era, the paradigm has shifted to more aggressive intervention with primary VATS on first pneumothorax presentation.
Clinical
Prophylactic contralateral intervention may be justified in select cases such as patients planning extended remote travel (e.g., 2 months hiking in backcountry).
Clinical
Standard VATS technique for pneumothorax includes apical wedge resection and roughing up the pleura.
Clinical
If the patient has had multiple chest tubes previously, talc pleurodesis should be considered in addition to bleb resection and pleural abrasion.
Clinical
Talc applied thoracoscopically distributes beautifully throughout the pleural space.
Clinical
Mechanical abrasion of both visceral and parietal pleura improves outcomes, though aggressive visceral pleural abrasion can cause air leaks.
Clinical
On re-operation, chests that had previous pleural roughing may appear as if no prior surgery was performed.
Clinical
If all visible blebs are resected, pleurodesis may not be necessary.
Opinion
Mechanical pleurodesis should be limited to the apex (4th intercostal space and above) rather than the entire chest.
Clinical
Adequate mechanical pleurodesis is achieved when small blood vessels become prominent on the pleura.
Clinical
Deflating and reinflating the lung multiple times during surgery helps identify blebs, particularly on the edges of the lower lobe.
Clinical
Blebs can be sealed with energy devices rather than stapled, allowing surgery through 3 or 5 millimeter incisions.
Clinical
A study of 350 patients who underwent lung procedures without postoperative chest tube placement showed no complications.
Epidemiological
The no-chest-tube study included lung biopsies, not spontaneous pneumothorax patients.
Epidemiological
Omitting chest tubes after pneumothorax surgery requires reliable nursing care to detect early postoperative pneumothorax, which may not be available in all settings.
Clinical
Re-entering a chest that has had talc pleurodesis is extremely difficult and may require pleural decortication.
Clinical
There is a 50% chance of failure with chest tube alone for spontaneous pneumothorax.
Host summary
85% of pneumothorax patients can avoid an operation, making primary VATS potentially unjustified for all first-time presentations.
Host summary
2001 ACCP consensus guidelines stated there was no role for simple aspiration in pneumothorax.
Host summary
British Thoracic Society 2010 guidelines recommend simple aspiration as first-line therapy for pneumothorax.
Host summary
A Cochrane review in 2007 found only one randomized controlled trial comparing manual aspiration versus chest tube for pneumothorax, which included patients as young as 16 years old.
Host summary
The randomized trial showed an immediate success rate of aspiration of 59%, similar to chest tube success rates.
Host summary
In the aspiration trial, there were 11 failures: 9 received chest tubes and only 2 went on to VATS, with 50% avoiding hospitalization and no difference in overall hospital stay or recurrence rate.
Host summary
Every patient with spontaneous pneumothorax who has been evaluated in adult thoracic surgery has blebs on the top of the lung.
Host summary
In adult thoracic surgery practice, the paradigm is to fix the symptomatic side with blebs and observe the contralateral side with blebs, intervening only if a second pneumothorax develops.
Host summary
TissueSeal applied after roughing up pleural edges may promote adhesion, though it is more expensive than other methods.
Host summary