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RESEARCH LETTER
Year : 2020  |  Volume : 37  |  Issue : 2  |  Page : 185-186  

Bronchopleural fistula secondary to bronchoalveolar lavage-induced pneumothorax: A rare complication


Department of Anaesthesiologist and Critical Care, Armed Forces Medical College, Pune, Maharashtra, India

Date of Submission03-Oct-2019
Date of Acceptance12-Oct-2019
Date of Web Publication27-Feb-2020

Correspondence Address:
Shalendra Singh
Department of Anaesthesiologist and Critical Care, Armed Forces Medical College, Pune, Maharashtra
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/lungindia.lungindia_459_19

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How to cite this article:
Singh S, Kate S, Sud S, Dwivedi D. Bronchopleural fistula secondary to bronchoalveolar lavage-induced pneumothorax: A rare complication. Lung India 2020;37:185-6

How to cite this URL:
Singh S, Kate S, Sud S, Dwivedi D. Bronchopleural fistula secondary to bronchoalveolar lavage-induced pneumothorax: A rare complication. Lung India [serial online] 2020 [cited 2020 Apr 3];37:185-6. Available from: http://www.lungindia.com/text.asp?2020/37/2/185/279582



Sir,

Bronchoalveolar lavage (BAL) is known to be a safe and useful diagnostic procedure to obtain samples from the lower respiratory tract. Rare complications attributable to BAL are hypoxia, aspiration, fever, and bleeding.[1] Fiberoptic bronchoscopy (FOB)-induced pneumothorax is reported in 0.1% of cases, whereas pneumothorax after BAL has been reported in seven cases where the biopsy was taken through FOB.[2],[3] The incidence of bronchopleural fistula (BPF) varies from 4.5% to 20% after pneumonectomy and 0.5% after lobectomy, but BPF after pneumothorax has not been reported.[4] We report a rare case of BPF secondary to BAL-induced pneumothorax.

A 65-year-old male known case of carcinoma hypopharynx underwent total laryngectomy, esophagectomy, and tracheostomy under general anesthesia. Preoperative chest X-ray revealed a cavity lesion in the right lower zone with no air–fluid level. Pulmonary function test suggested mild restrictive disease, and echocardiography was normal. After prolonged surgery, the patient was shifted to the surgical intensive care unit (ICU) for postoperative mechanical ventilation. On day 3, the patient was maintaining oxygen saturation (SpO2) of 90% on T-piece, but on auscultation, there was reduced air entry in the left side. Suspecting a mucous plug after chest X-ray, a BAL was performed in the left lung with 2 aliquots of 20 mL normal saline using a gentle suction of 50–60 mmHg. Few hours after the procedure, the patient had tachypnea, respiratory distress, and dip in saturation to 85%. Chest radiograph confirmed the presence of a right lung pneumothorax [Figure 1]. Immediately, a 24-F intercostal drain (ICD) tube was placed in the fourth intercostal space. Gush of air was heard and bubbles started appearing in under water drain. Slowly the vitals of the patient improved to SpO2 of 96%–97%. The patient was maintaining saturation on T-piece of 90%–95% on day 4 and day 5, but underwater seal showed bubbling and chest X-ray showed residual pneumothorax. The patient found difficult to wean from the ventilator showing bubbling in underwater drain with each positive-pressure ventilatory cycle, which raised the differential diagnosis of BPF. A computer tomography scan of the chest revealed residual pneumothorax, pus-filled cavity in the right lower zone, and ICD in situ.
Figure 1: Showing pneumothorax in the right lung after the bronchoalveolar lavage procedure

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Pneumothorax post BAL in this case could be the sequelae to air trapping or instilled normal saline, which resulted in rupture of an air-filled cavity. BPF during the procedure possibly results from a snugly wedged FOB into the bronchus. To avoid similar cases in future, a high level of vigilance toward procedural safety and a structured approach is required during FOB and BAL procedure on ICU patients. The postprocedural chest X-ray should be checked. Maintaining of wedge position, gentle handling of FOB to avoid bronchial trauma, and application of gentle suction (50–80 mmHg) while collecting the lavage specimen in the collection trap are crucial to prevent pneumothorax and BPF.

Declaration of patient consent

The authors certify that they have obtained all appropriate patient consent forms. In the form, the patient has given his consent for his images and other clinical information to be reported in the journal. The patient understands that his name and initials will not be published and due efforts will be made to conceal their identity, but anonymity cannot be guaranteed.

Financial support and sponsorship

Nil.

Conflicts of interest

There are no conflicts of interest.



 
   References Top

1.
Schnabel RM, van der Velden K, Osinski A, Rohde G, Roekaerts PM, Bergmans DC, et al. Clinical course and complications following diagnostic bronchoalveolar lavage in critically ill mechanically ventilated patients. BMC Pulm Med 2015;15:107.  Back to cited text no. 1
    
2.
Pue CA, Pacht ER. Complications of fiberoptic bronchoscopy at a university hospital. Chest 1995;107:430-2.  Back to cited text no. 2
    
3.
Leap J, Naddour M, Alhassan S, Bajwa O. Pneumothorax secondary to BAL: A rare complication. Chest 2017;152:856.  Back to cited text no. 3
    
4.
Cerfolio RJ. The incidence, etiology, and prevention of postresectional bronchopleural fistula. Semin Thorac Cardiovasc Surg 2001;13:3-7.  Back to cited text no. 4
    


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