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There has been increased interest in the adoption of an intracapsular tonsillectomy technique in the UK in recent years. The adoption of any newer surgical technique inevitably is accompanied by an educational need.
Objectives
This paper aims to outline the equipment preparation and surgical steps for intracapsular coblation tonsillectomy, including recognition of the tonsillar capsule. The paper also discusses how to avoid and deal with common complications and technical difficulties.
To compare the extent of tissue damage produced by conventional cold steel and coblation tonsillectomy.
Methods
Twenty patients underwent conventional and 18 underwent coblation tonsillectomy. The removed tonsils were histopathologically evaluated.
Results
Analgesic use was lower in the coblation group during the early post-operative period. Histological investigation of tonsils removed by the conventional method showed intensive haemorrhage and hyperaemia in the tonsillar capsules, which was not seen in the coblation group. Furthermore, in the coblation group, there was less mast cell degranulation (p = 0.0081) and a smaller amount of skeletal muscle tissue (p = 0.0043) in the tonsillar capsules, indicating less tissue damage.
Conclusion
Compared to the cold steel technique, coblation tonsillectomy is superior in terms of less early post-operative pain and less damage to surrounding tissues. Significantly lower mast cell degranulation in coblation tonsillectomy may contribute to the reduction of post-operative pain.
To compare conventional cold curettage adenoidectomy with endoscopic assisted coblation adenoidectomy in terms of operative time, primary blood loss, post-operative residual tissue and post-operative pain.
Methods
This prospective non-randomised study was carried out on 60 patients aged 5–12 years. One group underwent conventional cold curettage adenoidectomy and the other underwent endoscopic assisted coblation adenoidectomy, with 30 patients per group.
Results
Mean operation duration was significantly higher for endoscopic assisted coblation adenoidectomy. Mean blood loss was 44.33 ml in conventional cold curettage adenoidectomy and 32.47 ml in endoscopic assisted coblation adenoidectomy. The pain grade was significantly lower in endoscopic assisted coblation adenoidectomy. Forty per cent of patients who underwent conventional cold curettage adenoidectomy had adenoid tissue post-surgery, while it was completely absent in endoscopic assisted coblation adenoidectomy patients.
Conclusion
Coblation adenoidectomy has significant advantages over conventional adenoidectomy in terms of reduced blood loss, no post-operative residual tissue and lower pain grade on day 1 after surgery.
This study aimed to estimate the cost-effectiveness of Coblation compared with cold steel tonsillectomy in adult and paediatric patients in the UK.
Method
Decision analysis was undertaken by combining published clinical outcomes with resource utilisation estimates derived from a panel of clinicians.
Results
Using a cold steel procedure instead of Coblation is expected to generate an incremental cost of more than £2000 for each additional avoided haemorrhage, and the probability of cold steel being cost-effective was approximately 0.50. Therefore, the cost-effectiveness of the two techniques was comparable. When the published clinical outcomes were replaced with clinicians’ estimates of current practice, Coblation was found to improve outcome for less cost, and the probability of Coblation being cost-effective was at least 0.70.
Conclusion
A best-case scenario suggests Coblation affords the National Health Service a cost-effective intervention for tonsillectomy in adult and paediatric patients compared with cold steel procedures. A worst-case scenario suggests Coblation affords the National Health Service an equivalent cost-effective intervention for adult and paediatric patients.
Tonsillectomy is a common procedure with significant post-operative pain. This study was designed to compare post-operative pain, returns to a normal diet and normal activity, and duration of regular analgesic use in Coblation and bipolar tonsillectomy patients.
Methods:
A total of 137 patients, aged 2–50 years, presenting to a single institution for tonsillectomy or adenotonsillectomy were recruited. Pain level, diet, analgesic use, return to normal activity and haemorrhage data were collected.
Results:
Coblation tonsillectomy was associated with significantly less pain than bipolar tonsillectomy on post-operative days 1 (p = 0.005), 2 (p = 0.006) and 3 (p = 0.010). Mean pain scores were also significantly lower in the Coblation group (p = 0.039). Coblation patients had a significantly faster return to normal activity than bipolar tonsillectomy patients (p < 0.001).
Conclusion:
Coblation tonsillectomy is a less painful technique compared to bipolar tonsillectomy in the immediate post-operative period and in the overall post-operative period. This allows a faster return to normal activity and decreased analgesic requirements.
Acquired airway stenosis can be challenging to manage endoscopically because of difficult field visualisation, instrument limitations and the risk of laser fire. At our institution, radiofrequency coblation has been successfully used for the resection of subglottic and tracheal stenosis in adults. This paper presents our experience with this technique.
Method:
A retrospective case note analysis of all cases of airway stenosis in adults from 2007 to 2012 was performed.
Results:
Ten adult patients underwent coblation resection for airway stenosis. All lesions were classified as McCaffrey stage I (i.e. less than 1 cm long). Causes of stenosis included: idiopathic stenosis (40 per cent), previous tracheostomy (30 per cent) and endotracheal intubation (20 per cent). Six patients (60 per cent) required a single procedure and 4 (40 per cent) required multiple interventions. All patients reported significant improvement in their symptoms following treatment. All patients were alive at the time of writing and none have required open resection.
Conclusion:
Radiofrequency coblation is an attractive alternative technique for the treatment of idiopathic or acquired airway stenosis in adults.
To propose radiofrequency coblation as a potential treatment modality for mild to moderate epistaxis in patients with hereditary haemorrhagic telangiectasia.
Method:
Case reports and review of the world literature concerning coblation and other treatment modalities for epistaxis in patients with hereditary haemorrhagic telangiectasia.
Results:
Effective epistaxis control was achieved in four out of five cases of hereditary haemorrhagic telangiectasia. In the fifth case, we struggled to achieve haemostasis due to disease severity.
Conclusion:
Radiofrequency coblation is a novel technique, which was found to be a safe, effective, quick and well tolerated treatment option for epistaxis management in patients with hereditary haemorrhagic telangiectasia.
Juvenile nasopharyngeal angiofibroma may be successfully resected using endoscopic techniques. However, the use of coblation technology for such resection has not been described. This study aimed to document cases of Fisch class I juvenile nasopharyngeal angiofibroma with limited nasopharyngeal and nasal cavity extension, which were completely resected using an endoscopic coblation technique.
Methods:
We retrospectively studied 23 patients with juvenile nasopharyngeal angiofibroma who underwent resection with either traditional endoscopic instruments (n = 12) or coblation (n = 11). Intra-operative blood loss and overall operative time were recorded.
Results:
The mean tumour resection time for coblation and traditional endoscopic instruments was 87 and 136 minutes, respectively (t = 9.962, p < 0.001). Mean intra-operative blood loss was 121 and 420 ml, respectively (t = 28.944, p < 0.001), a significant difference. Both techniques achieved complete tumour resection with minimal damage to adjacent tissues, and no recurrence in any patient.
Conclusion:
Coblation successfully achieves transnasal endoscopic resection of juvenile nasopharyngeal angiofibroma (Fisch class I), with good surgical margins and minimal blood loss.
Coblation tonsillectomy is a relatively recently introduced surgical technique which attempts to bridge the gap between ‘hot’ and ‘cold’ tonsillectomy methods.
Aim:
To compare coblation tonsillectomy with three commonly used surgical techniques: cold dissection–ligation, monopolar electrocautery and CO2 laser.
Materials and methods:
A prospective, randomised, double-blinded clinical trial was undertaken of 60 adult patients divided into three equal study groups. Patients in each group were randomly assigned to have one tonsil removed with coblation and the second with one of the other three tonsillectomy techniques. Ten randomly selected tonsils resected by each method were sent for histopathological evaluation.
Results:
Coblation was significantly faster to perform than laser and produced significantly less intra-operative blood loss than both the dissection–ligation and laser techniques. Subjective visual analogue scale comparisons showed a non-significant pain score difference between coblation and dissection–ligation on most post-operative days. Coblation produced consistently highly significantly (p < 0.001) less pain, compared with electrocautery up to the 12th post-operative day and laser up to the 10th post-operative day. There was no significant difference in tonsillar fossa healing, comparing coblation to both dissection–ligation and laser techniques. Monopolar electrocautery produced significantly slower healing than coblation after 7 post-operative days, with no significant difference after 15 post-operative days. Histopathological evaluation showed that coblation inflicted significantly less thermal tissue injury than either electrocautery (p = 0.001) or laser (p = 0.003).
Conclusions:
In adult patients, coblation tonsillectomy offers some significant advantages in terms of post-operative pain and healing, compared with other tonsillectomy techniques.
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