Saudi Journal of Anaesthesia

LETTERS TO EDITOR
Year
: 2020  |  Volume : 14  |  Issue : 4  |  Page : 563--564

Use of lung ultrasound to diagnose intraoperative tension pneumothorax in a pediatric laparoscopic surgery


Tanya Mital, Shilpa Goyal, Nidhi Jain, Ankur Sharma 
 Department of Anaesthesiology and Critical Care, AIIMS, Jodhpur, Rajasthan, India

Correspondence Address:
Dr. Nidhi Jain
B-3, Sir, Pratap Colony, Air Force Road, Ratanada, Jodhpur - 342 011, Rajasthan
India




How to cite this article:
Mital T, Goyal S, Jain N, Sharma A. Use of lung ultrasound to diagnose intraoperative tension pneumothorax in a pediatric laparoscopic surgery.Saudi J Anaesth 2020;14:563-564


How to cite this URL:
Mital T, Goyal S, Jain N, Sharma A. Use of lung ultrasound to diagnose intraoperative tension pneumothorax in a pediatric laparoscopic surgery. Saudi J Anaesth [serial online] 2020 [cited 2021 Jan 21 ];14:563-564
Available from: https://www.saudija.org/text.asp?2020/14/4/563/296016


Full Text



Sir,

Laparoscopic pediatric surgeries are inherently challenging due to their complicated approach, lengthy duration, and daunting anatomy. Surgical pneumoperitoneum causes an increase in end-tidal CO2 (ETCO2) and airway pressures, making it challenging to diagnose an iatrogenic pneumothorax under general anesthesia.[1] We wish to report the role of ultrasound in diagnosis and management of intraoperative tension pneumothorax during pediatric surgery.

A 13 kg, 5-year-old female was posted for a laparoscopic gastric pull-up. She had a history of corrosive ingestion. After attaching all ASA monitoring patient was induced, and after confirming adequate muscle relaxation, an endotracheal tube (ETT) of 5 mm OD was secured at 13 cm at the level of incisors. Pneumoperitoneum was established with CO2 maintaining an intra-abdominal pressure less than 10 mmHg.

Intraoperatively there was a sudden rise of Pinsp(peak inspiratory pressure) to 33 mmHg. Endotracheal tube kinking, mucus plugging, and anesthesia workstation malfunction were immediately ruled out. The surgery was stopped and the pneumoperitoneum released, despite which the patient did not improve.

Meanwhile, oxygen saturation (SpO2) dropped even further to 85%, and in addition, the patient developed tachycardia (HR 150/min) and hypotension (50/35 mm Hg) which was unresponsive to fluid challenge. Noradrenaline infusion was started at a rate of 0.07 mcg/kg/min, and the fraction of inspired oxygen (FiO2) was increased from 0.5 to 1. Urgent lung ultrasound was performed to confirm a suspicion of pneumothorax. The linear hockey stick ultrasound probe (Philips L15-7io Biobrand, Koninklijke Philips®, Netherlands 7-15 Hz) was placed on the anterior aspect of the chest and revealed an absence of lung sliding on B mode on the right-side [Figure 1] with M mode imaging showing a bar code sign suggesting a diagnosis of right pneumothorax. A rapid needle thoracostomy (18G IV cannula) was inserted in second intercostal space to relieve the symptoms followed by a right-sided intercostal drain placement. The patient improved hemodynamically. The surgery resumed, and subsequently, a pleural rent was identified on the right side and repaired. On completion of the surgery, the patient was transferred to the pediatric intensive care unit intubated with stable hemodynamics. [Figure 2]{Figure 1}{Figure 2}

Intraoperative tension pneumothorax is a rare entity and challenging to diagnose. In this case, the surgical port caused a pleural rent, which in turn acted as a one-way valve during positive pressure ventilation leading to the development of tension pneumothorax. Signs of tension pneumothorax during general anesthesia are changes in pulmonary compliance, increased airway pressures, arterial hypotension and hypoxia as were evident in this patient.[2]

Point of care ultrasonography has emerged as a rapid diagnostic tool in an intraoperative and critical care setting. The point on the chest wall where lung sliding intermittently reappears is “lung point.” This is 100% specific for confirming small pneumothoraces but is futile to search for in case of tension pneumothorax because most of the lung has wholly collapsed.[3] We were able to timely diagnose this condition using lung ultrasound at crucial time points and appropriately and safely manage this patient.

Declaration of patient consent

The authors certify that they have obtained appropriate patient consent forms. In the form, the patient's guardian has given consent for her images and other clinical information to be reported in the journal.

Financial support and sponsorship

Nil.

Conflicts of interest

There are no conflicts of interest.

References

1Han Q, Wang B, Xu A. Use of intraoperative ultrasonography for identification and management of pneumothorax caused by iatrogenic diaphragm defect: A case report and literature review. J Int Med Res 2020;48:300060519898048. doi: 10.1177/0300060519898048.
2Chen YL, Chen CY, Cheng JK. Delayed tension pneumothorax during surgery. J Chin Med Assoc 2005;68:491-4.
3Volpicelli G. Sonographic diagnosis of pneumothorax. Intensive Care Med 2011;37:224-32.