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Kardiochirurgia i Torakochirurgia Polska/Polish Journal of Thoracic and Cardiovascular Surgery
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vol. 10
 
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THORACIC SURGERY
Which technique is the best for the surgical management of empyema thoracis in children?

Burak Tander
,
Unal Bicakci
,
Mithat Gunaydin
,
Dilek Demirel
,
Riza Rizalar
,
Ender Ariturk
,
Ferit Bernay

Kardiochirurgia i Torakochirurgia Polska 2013; 10 (2): 130–132
Online publish date: 2013/07/09
Article file
- 06 Tander.pdf  [0.67 MB]
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Introduction

Empyema thoracis is defined as the accumulation of purulent material within the pleural space. The most common cause of empyema in children is bacterial pneumonia ranging from simple parapneumonic effusion to complicated loculated empyema [1]. There are several treatment options for curing empyema, such as tube thoracostomy, fibrinolytics, open decortication via thoracotomy, and thoracoscopic debridement. The debate concerning the most appropriate method for children is still ongoing [2]. Apart from the type of treatment, the timing of intervention is also a matter for discussion. Thoracoscopic drainage with the debridement of empyema is a popular method of treatment, widely used in children when conservative treatment fails. Many authors have suggested that additional thoracoscopy yields better results than tube thoracostomy alone for the primary treatment of empyema [3, 4]. In our previous article we demonstrated the efficiency of our own technique utilizing balloon-assisted single-port thoracoscopy for debridement [5]. The prolonged hospital stay and chest tube drainage duration in some patients with advanced empyema led us to use two ports for thoracoscopic debridement. The aim of this study was to compare the single-port and two-port techniques for the thoracoscopic debridement of empyema.

Material and methods

Fifty-one patients (33 male, 18 female) with advanced empyema thoracis were evaluated between May 2002 and December 2012. The outcome parameters were age, gender, physical findings, the type of thoracoscopic surgery, microorganism cultures, the length of stay (LOS) and the duration of chest tube drainage (DCTD). The single-port technique (SPT) was performed on 14 patients and the two-port technique (TPT) on 37 patients. Antibiotic regimens were provided to all patients in our department (sultamicillin, gentamycin, clindamycin). After December 2006, all thoracoscopies were made via two ports. Thoracic CT scans were performed in all cases with pulmonary compression caused by adhesion or empyema. In the SPT group, the telescope itself was used as a dissection tool for separating adhesions. The entire debridement and dissection were performed with the telescope. No other instrument was inserted during the dissection and debridement. Postoperatively, a chest tube was inserted through the trocar entry site [5]. In the TPT group, one port was made for the telescope and another one was made for debridement. After the dissection of the septa and the debridement, a chest tube was inserted through one of the trocar holes. In all cases, material for microbiologic analysis was obtained during thoracoscopy. All patients received broad-spectrum antibiotics.



Statistical analysis



Statistical analysis was performed using SPSS 16.0 software. Descriptive statistics were prepared and the groups were compared using the chi-square test or Fisher’s exact test; normality tests were performed, followed by one-way ANOVA or Kruskal-Wallis analysis of variance.

Results

Fever was the primary symptom in all patients. Cough, respiratory distress, and general poor health were found in many patients as well. The total number of patients in the SPT group was 14 (7 male, 7 female) and the total number of patients in the TPT group was 37 (26 male, 11 female) (Table I).

Intraoperatively, all patients had serious adhesions with fibrin septa, which were separated and aspirated. These were all stage 3, advanced cases.

Twenty-two patients had right-sided empyema (10 in the SPT group, 12 in the TPT group), and twenty patients had left-sided empyema (6 in the SPT group, 14 in the TPT group). Two patients had bilateral empyema, both of whom were in the TPT group. The median duration of chest tube drainage (DCTD) was 11 days in the SPT group and 9 days in the TPT group. The median length of stay (LOS) was 20 days in the SPT group and 13 days in the TPT group. Limited and spontaneously resolving bronchopulmonary fistulas were found in 4 and 2 patients in the SPT and TPT groups, respectively (Table I). Secondary surgery was not necessary in the SPT group, but in the TPT group, two patients (5.4%) underwent secondary interventions due to debridement failure. Microbiological analysis revealed positive cultures for microorganisms in seven patients (three instances of Streptococcus pneumoniae and one of each of the following: Staphylococcus aureus, Acinetobacter spp., non-specific fungi, and Mycobacterium tuberculosis).

There was no difference between the groups with regard to age (p = 0.9), sex (p = 0.15), the side of empyema (p = 0.51), fever (p = 0.26), the need for further surgery (p = 0.48), or the development of bronchopulmonary fistula (p = 0.06). The LOS was significantly shorter in the TPT group than in the SPT group (p = 0.05). The DCTD was not statistically significant (p = 0.46).

Discussion

It is possible for parapneumonic effusion to progress to empyema. The thick septa formed by fibrin and cellular debris block lung expansion during inspiration, resulting in the deposition of purulent fluid between multiloculated septa rather than in free fluid accumulation [6]. Conservative treatment modalities, such as antibiotics, tube drainage, and fibrinolytics, may fail under such circumstances [7, 8].

The change from simple effusions to the more serious stages, such as multiloculated effusions or empyema, is progressive. The stages of empyema are classified into three groups - exudative, fibrinopurulent and organizing [9, 10]. The determination of the stage of empyema is not always simple. The progress to the third stage is often rapid and the disease is often not diagnosed until it enters the organizing phase.

Up to 40% of pneumonia patients develop parapneumonic effusions despite appropriate initial antibiotic therapy [11-13]. Surgical intervention is inevitable in the case of progression to complex complicated parapneumonic effusion or complex empyema. If the less invasive methods (thoracentesis, chest tube drainage alone or with fibrinolytics, open thoracotomy or thoracoscopy) turn out to be ineffective the dissection of the septa and further debridement may be necessary [14-16].

In recent years, thoracoscopy has become popular in the treatment of empyema. Many authors have suggested that thoracoscopy is more advantageous as the initial treatment than tube thoracostomy alone [17-19]. Shah’s multicenter study supports the early use of thoracoscopy, pointing to shorter hospital stays and fewer instances of further surgery [20]. Indeed, the separation and washing out of the septa allows for better visibility inside the thoracic cavity and more efficient expansion of the affected lung [21]. Additionally, the placement of a chest tube at the desired angle through thoracoscopy may provide more effective postoperative drainage [22]. In the current study, these findings were observed in both groups.

Martinez-Ferro et al. indicated in their prospective study that the SPT is a safe method and has better cosmetic results than the TPT [23]. In our series, all patients suffered from advanced empyema and, in our opinion, the clinical outcomes provided by the SPT were, in many cases, far from satisfactory. We suggest that the SPT may be sufficient only for patients in the less severe phases of empyema. In contrast, the TPT is more effective in patients with multiloculated, thick fibrin septa. Although it was not statistically significant, we found that the LOS and DCTD were shorter in the TPT group.

We found that two-port thoracoscopy provides better visibility and ensures easier dissection and debridement of the thorax than single-port thoracoscopy.

To conclude, we consider the TPT to be more useful for successful dissection and debridement in patients with extremely thick septa of late-stage empyema. In simple, single-septum empyema, the SPT is as effective as the TPT and the type of thoracoscopy should be determined according to the structure and stage of the empyema.

References

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2. Aziz A, Healey JM, Qureshi F, Kane TD, Kurland G, Green M, Hackam DJ. Comparative analysis of chest tube thoracostomy and video-assisted thoracoscopic surgery in empyema and parapneumonic effusion associated with pneumonia in children. Surg Infect 2007; 9: 317-323.

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5. Tander B, Ustun L, Ariturk E, Rizalar R, Ayyildiz SH, Bernay F. Balloon- assisted single port thoracoscopic debridement in children with thoracic empymema. J Laparoendosc Adv Surg Tech A 2007; 17: 504-508.

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18. Angelillo Mackinlay TA, Lyons GA, Chimondeguy DJ, Piedras MA, Angaramo G, Emery J. VATS debridement versus thoracotomy in the treatment of loculated postpnuemonia empyema. Ann Thorac Surg 1996; 61: 1626-1630.

19. Sendt W, Forster E, Hau T. Early thoracoscopic debridement and drainage as definite treatment for plueral empyema. Eur J Surg 1995; 161: 73-76.

20. Shah SS, DiCristina CM, Bell LM, Ten HT, Metlay JP. Primary early thoracoscopy and reduction in length stay and additional procedures among children with complicated pnuemonia. Arch Pediatr Adolesc Med 2008; 162: 675-681.

21. Gossot D, Stern JB, Galetta D, Debrosse D, Girard P, Caliandro R, Harper L, Grunenwald D. Thoracoscopic management of postpneumonectomy empyema. Ann Thorac Surg 2004; 78: 273-276.

22. Kercher KW, Attorri RJ, Hoover JD, Morton D. Thoracoscopic decortication as first-line therapy for pediatric parapneumonic empyema. Chest 2000; 118: 24-27.

23. Martínez-Ferro M, Duarte S, Laje P. Single port thoracoscopy for the treatment of pleural empyema in children. J Pediatr Surg 2004; 39: 1194-1196.
Copyright: © 2013 Polish Society of Cardiothoracic Surgeons (Polskie Towarzystwo KardioTorakochirurgów) and the editors of the Polish Journal of Cardio-Thoracic Surgery (Kardiochirurgia i Torakochirurgia Polska). This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) License (http://creativecommons.org/licenses/by-nc-sa/4.0/), allowing third parties to copy and redistribute the material in any medium or format and to remix, transform, and build upon the material, provided the original work is properly cited and states its license.
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