Laser-tonsillotomy for treatment of obstructive tonsillar hyperplasia in early childhood: a retrospective review

CO2 laser or dissection tonsillectomy: A systematic review and meta-analysis of clinical outcomes

OBJECTIVE

Recent evidence has suggested that performing a tonsillectomy with CO₂ laser results in favorable intraoperative and postoperative outcomes. This study aimed to compare the clinical outcomes of CO₂ and dissection tonsillectomy.

METHODS

We conducted a systematic search in PubMed, Scopus, and Cochrane Central Register of Controlled Trials (CENTRAL), until the 1st of September 2021 for completed studies comparing intraoperative and postoperative outcomes of CO₂ laser and dissection tonsillectomy. Primary outcomes were operative time, intraoperative blood loss, and postoperative pain. Secondary outcomes included postoperative hemorrhage and tonsillar fossa healing. A random-effects pairwise meta-analysis of both randomized and non-randomized trials was performed. A subgroup analysis considering the randomization of trials was carried out, and sensitivity analyses linked to the quality of included papers or the age of patients were executed. Quality assessment was appraised with the Cochrane risk of bias and ROBINS-I tools for randomized and non-randomized trials, respectively.

RESULTS

Eight trials with 632 cases contributed data to this review. For operative time, a significant difference in favor of CO₂ laser tonsillectomy was documented (SMD = -1.32; 95% CI = -2.24 to -0.40; p < 0.005). This was also the case for intraoperative blood loss (SMD = -3.94; 95% CI = -5.62 to -2.26; p < 0.00001). For postoperative pain, no significant differences were detected on day one and seven between the intervention groups (SMD = -0.24; 95% CI = -1.11 to 0.63; p = 0.59 and SMD = 1.31; 95% CI = -0.14 to 2.75; p = 0.08, respectively). CO₂ laser tonsillectomy was not superior to conventional dissection tonsillectomy regarding postoperative bleeding rates (OR = 0.50; 95% CI = 0.10 to 2.53; p = 0.40).

CONCLUSION

This study demonstrates that CO₂ laser tonsillectomy is more likely to result in a clinically meaningful decrease in operative time and blood loss compared to the conventional dissection technique in both pediatric and adult patients. We found no significant difference in postoperative pain and bleeding. Performing further level-1 trials on this topic with a standardized and validated outcome measurement method will enable more robust conclusions to be drawn.

Do tonsils regrow after partial tonsillectomy? - Histology of regrown tonsils and predisposing factors for tonsillar regrowth

OBJECTIVES

It has been suggested that after partial tonsillectomy, referred here as tonsillotomy (TT), the remaining tonsillar tissue might be altered, leading to scarring or chronic tonsillitis. The objectives were to compare the histology of regrown tonsillar tissues with native tonsils and to assess the incidence of reoperations and predictive factors for tonsillar regrowth after TT.

METHODS

Tonsillar tissues of 1) children that underwent TT and later requiring resurgery and 2) children operated on for the first time with TT were prospectively analysed. To assess the incidence of resurgery because of tonsillar regrowth and predictive factors for tonsillar regrowth, the data covering TTs and tonsillectomies performed in 2009-2020 were retrospectively retrieved.

RESULTS

Altogether 11 children formed the regrowth group, with the control group consisting of 19 children. In the histological analysis of tonsillar tissues, neutrophil infiltration in the epithelium and crypts and severe lymphoplasmacytic infiltration in the epithelium were significantly more frequent in samples of the regrowth group relative to the control group. The number of germinal centres was greater in the regrowth group. In the retrospective analysis of 3141 children, the incidence of resurgery after primary TT was 1.9%. Logistic regression analysis showed that age was the only significant predisposing factor for resurgery.

CONCLUSION

Inflammatory cells were present more often in regrown tonsillar tissues but there was no evidence of severe chronic inflammation or scarring in the regrown tonsils. The risk of resurgery after TT was low. Young age predisposed to tonsillar regrowth, no other risk factors were found.

Time to Functional Recovery After Laser Tonsillotomy Performed Under Local Anesthesia vs Conventional Tonsillectomy With General Anesthesia Among Adults: A Randomized Clinical Trial

IMPORTANCE

Carbon dioxide laser tonsillotomy performed under local anesthesia may be an effective and less invasive alternative than dissection tonsillectomy for treatment of tonsil-related afflictions.

OBJECTIVE

To compare functional recovery and symptom relief among adults undergoing tonsillectomy or tonsillotomy.

DESIGN, SETTING, AND PARTICIPANTS

This randomized clinical trial was conducted at 5 secondary and tertiary hospitals in the Netherlands from January 2018 to December 2019. Participants were 199 adult patients with an indication for surgical tonsil removal randomly assigned to either the tonsillectomy or tonsillotomy group.

INTERVENTIONS

For tonsillotomy, the crypts of the palatine tonsil were evaporated using a carbon dioxide laser under local anesthesia, whereas tonsillectomy consisted of total tonsil removal performed under general anesthesia.

MAIN OUTCOMES AND MEASURES

The primary outcome was time to functional recovery measured within 2 weeks after surgery assessed for a modified intention-to-treat population. Secondary outcomes were time to return to work after surgery, resolution of primary symptoms, severity of remaining symptoms, surgical complications, postoperative pain and analgesics use, and overall patient satisfaction assessed for the intention-to-treat population.

RESULTS

Of 199 patients (139 [70%] female; mean [SD] age, 29 [9] years), 98 were randomly assigned to tonsillotomy and 101 were randomly assigned to tonsillectomy. Recovery within 2 weeks after surgery was significantly shorter after tonsillotomy than after tonsillectomy (hazard ratio for recovery after tonsillectomy vs tonsillotomy, 0.3; 95% CI, 0.2-0.5). Two weeks after surgery, 72 (77%) patients in the tonsillotomy group were fully recovered compared with 26 (57%) patients in the tonsillectomy group. Time until return to work within 2 weeks was also shorter after tonsillotomy (median [IQR], 4.5 [3.0-7.0] days vs 12.0 [9.0-14.0] days; hazard ratio for return after tonsillectomy vs tonsillotomy, 0.3; 95% CI, 0.2-0.4.). Postoperative hemorrhage occurred in 2 patients (2%) in the tonsillotomy group and 8 patients (12%) in the tonsillectomy group. At 6 months after surgery, fewer patients in the tonsillectomy group (25; 35%) than in the tonsillotomy group (54; 57%) experienced persistent symptoms (difference of 22%; 95% CI, 7%-37%). Most patients with persistent symptoms in both the tonsillotomy (32 of 54; 59%) and tonsillectomy (16 of 25; 64%) groups reported mild symptoms 6 months after surgery.

CONCLUSIONS AND RELEVANCE

This randomized clinical trial found that compared with tonsillectomy performed under general anesthesia, laser tonsillotomy performed under local anesthesia had a significantly shorter and less painful recovery period. A higher percentage of patients had persistent symptoms after tonsillotomy, although the intensity of these symptoms was lower than before surgery. These results suggest that laser tonsillotomy performed under local anesthesia may be a feasible alternative to conventional tonsillectomy in this population.

TRIAL REGISTRATION

Netherlands Trial Register Identifier: NL6866 (NTR7044).

Laser CO2 tonsillotomy versus argon plasma coagulation (APC) tonsillotomy: A retrospective study with 10-year follow-up

INTRODUCTION

Tonsillotomy is increasingly gaining acceptance as the treatment for tonsillar hyperplasia resulting in obstructive symptoms. The aim of this study was to compare the long-term results of CO₂ laser tonsillotomy with those of argon plasma coagulation (APC) tonsillotomy.

METHODS

The data of 64 children, aged 2-10 years (mean 4.7 years), treated in the Department of Otolaryngology, Head and Neck Surgery, in Homburg, Germany with APC (36 patients) or CO₂ laser (28 patients) for tonsillar hyperplasia between June 2004 and December 2004 were available for analysis.

RESULTS

Forty-five (APC: 26 patients, CO₂: 19 patients) of the 64 patients (70.3%) could be contacted and were available for follow-up in a telephone survey conducted 10 years after surgery. The mean operation time was 17 min (range 10-25 min) in the APC group and 23 min (range 13-32 min) in the CO₂ group (p = 0.0003). No case of intra- or postoperative bleeding was documented. One minor intraoperative complication in the form of a superficial lip burn was documented in the APC group. During the minimum 10 years of follow-up, 1 patient treated with APC underwent a surgical revision because of tonsillar regrowth, whereas in the group of patients treated with CO₂, no surgical revision was needed. Regarding the parents' assessment of their children's symptoms, 89.4% of the parents of the CO₂ laser group and 84.6% of the parents of the APC group reported that the overall long-term operation results of their children to be "very satisfying." Regarding complications, the need for secondary tonsillectomy, and parents' satisfaction, no statistically significant differences were found.

CONCLUSIONS

Both CO₂ laser tonsillotomy and APC tonsillotomy are safe procedures leading to very satisfying results with respect to intra- and postoperative complications.

Microdebrider-assisted intracapsular tonsillectomy in adults with chronic or recurrent tonsillitis

OBJECTIVES/HYPOTHESIS

We compared the effectiveness and morbidity of microdebrider-assisted total intracapsular tonsillectomy (ICTE) with conventional extracapsular tonsillectomy (ECTE) in adults with chronic or recurrent tonsillitis.

STUDY DESIGN

Prospective randomized surgical trial.

METHODS

Adult patients with recurrent or chronic tonsillitis who underwent tonsillectomy between July 2010 and July 2012 in the Department of Otorhinolaryngology-Head and Neck Surgery, Medical University Innsbruck, Innsbruck, Austria, were consecutively included. Patients were randomized to receive either ICTE or ECTE. Patients and examiners were blinded to the surgical procedure. Effectiveness was assessed with the Tonsil and Adenoid Health Status Instrument (TAHSI). Various parameters of perioperative morbidity and the occurrence of tonsillar remnants were recorded.

RESULTS

In the 104 randomized patients, the average TAHSI score was 34.6 ± 11.7 before and 2.2 ± 5.7 after 6 months following tonsillectomy (P < 0.001). TAHSI scores improved equally in patients receiving conventional ECTE (33.6 points; 95% confidence interval (CI), 29.5 to 37.6) and in patients with ICTE (31.8 points; 95% CI, 27.7 to 35.9; between groups P = 0.6). Posttonsillectomy hemorrhage was more frequent following conventional ECTE (P = 0.03). Following ECTE, patients required more pain medication then following ICTE (P < 0.05). Tonsillar remnants were significantly more frequent after ICTE (P < 0,001). However, presence of tonsillar remnants had no influence on postoperative THASI scores (P > 0.5).

CONCLUSION

Tonsillectomy reduced symptoms of chronic or recurrent tonsillitis in adults with remarkable effectiveness. Microdebrider-assisted ICTE reduced symptoms as effectively as conventional ECTE. ICTE was associated with lower morbidity, but residual tonsils occurred in almost half of patients, costs were higher, and the intracapsular approach was more intricate and time-consuming.

LEVEL OF EVIDENCE

1b.

Tonsillitis and sore throat in children

Surgery of the tonsils is still one of the most frequent procedures during childhood. Due to a series of fatal outcomes after hemorrhage in children in Austria in 2006, the standards and indications for tonsillectomy have slowly changed in Germany. However, no national guidelines exist and the frequency of tonsil surgery varies across the country. In some districts eight times more children were tonsillectomized than in others. A tonsillectomy in children under six years should only be done if the child suffers from recurrent acute bacterially tonsillitis. In all other cases (i.e. hyperplasia of the tonsils) the low risk partial tonsillectomy should be the first line therapy. Postoperative pain and the risk of hemorrhage are much lower in partial tonsillectomy (=tonsillotomy). No matter whether the tonsillotomy is done by laser, radiofrequency, shaver, coblation, bipolar scissor or Colorado needle, as long as the crypts are kept open and some tonsil tissue is left behind. Total extracapsular tonsillectomy is still indicated in severely affected children with recurrent infections of the tonsils, allergy to antibiotics, PFAPA syndrome (periodic fever, aphthous stomatitis, pharyngitis, and cervical adenitis) and peritonsillar abscess. With regard to the frequency and seriousness of the recurrent tonsillitis the indication for tonsillectomy in children is justified if 7 or more well-documented, clinically important, adequately treated episodes of throat infection occur in the preceding year, or 5 or more of such episodes occur in each of the 2 preceding years (according to the paradise criteria). Diagnosis of acute tonsillitis is clinical, but sometimes it is hard to distinguish viral from bacterial infections. Rapid antigen testing has a very low sensitivity in the diagnosis of bacterial tonsillitis and swabs are highly sensitive but take a long time. In all microbiological tests the treating physician has to keep in mind, that most of the bacterials, viruses and fungi belong to the healthy flora and do no harm. Ten percent of healthy children even bear strepptococcus pyogenes all the time in the tonsils with no clinical signs. In these children decolonization is not necessary. Therefore, microbiological screening tests in children without symptoms are senseless and do not justify an antibiotic treatment (which is sometimes postulated by the kindergartens). The acute tonsillitis should be treated with steroids (e.g. dexamethasone), NSAIDs (e.g. ibuprofene) and betalactam antibiotics (e.g. penicillin or cefuroxime). With respect to the symptom reduction and primary healing the short-term late-generation antibiotic therapy (azithromycin, clarithromycin or cephalosporine for three to five days) is comparable to the long-term penicilline therapy. There is no difference in the course of healing, recurrence or microbiological resistance between the short-term penicilline therapy and the standard ten days therapy. On the other hand, only the ten days antibiotic therapy has proven to be effective in the prevention of rheumatic fever and glomerulonephritic diseases. The incidence of rheumatic heart disease is currently 0.5 per 100,000 children of school age. The main morbidity after tonsillectomy is pain and the late haemorrhage. Posttonsillectomy bleeding can occur till the whole wound is completely healed, which is normally after three weeks. Life-threatening haemorrhages occur often after smaller bleedings, which can spontaneously cease. That is why every haemorrhage, even the smallest, has to be treated properly and in ward. Patients and parents have to be informed about the correct behaviour in case of haemorrhage with a written consent before the surgery. The handout should contain important addresses, phone numbers and contact persons. Almost all cases of fatal outcome after tonsillectomy were due to false management of haemorrhage. Haemorrhage in small children can be especially life-threatening because of the lower blood volume and the danger of aspiration with asphyxia. A massive haemorrhage is an extreme challenge for every paramedic or emergency doctor because of the difficult airway management. Intubation is only possible with appropriate inflexible suction tubes. All different surgical techniques have the risk of haemorrhage and even the best surgeon will experience a postoperative haemorrhage. The lowest risk of haemorrhage is after cold dissection with ligature or suturing. All "hot" techniques with laser, radiofrequency, coblation, mono- or bipolar forceps have a higher risk of late haemorrhage. Children with a hereditary coagulopathy have a higher risk of haemorrhage. It is possible, that these children were not identified before surgery. Therefore it is recommended by the Society of paediatrics, anaesthesia and ENT, that a standardised questionnaire should be answered by the parents before tonsillectomy and adenoidectomy. This 17-point-checklist questionnaire is more sensitive and easier to perform than a screening with blood tests (e.g. INR and PTT). Unfortunately, a lot of surgeons still screen the children preoperatively by coagulative blood tests, although these tests are inappropriate and incapable of detecting the von Willebrand disease, which is the most frequent coagulopathy in Europe. The preoperative information about the surgery should be done with the child and the parents in a calm and objective atmosphere with a written consent. A copy of the consent with the signature of the surgeon and both custodial parents has to be handed out to the parents.

Tonsillotomy versus tonsillectomy on young children: 2 year post surgery follow-up

Objectives

To study the long-term effect of tonsillotomy and tonsillectomy in young children after two years in comparison to the results after six months.

Method

Children, age 4-5 with Sleep Disordered Breathing (SDB) and tonsil hyperplasia, were randomized to TE (32) or TT (35). TT was performed ad modum Hultcrantz with radiofrequency technique (Ellman). An adenoidectomy with cold steel was performed in the same session for 80% of cases. The patients were assessed prior to surgery, at six and 24 months postoperatively. Effects of surgery were evaluated clinically, through questionnaire (general health/snoring/ENT-infections), Quality of Life (QoL), survey of pediatric obstructive sleep apnea with OSA-18, and children’s behavior with the Child Behavior Checklist.

Results

After two years there was still no difference between the groups with respect to snoring and frequency or severity of upper airway infections. Both TT and TE had resulted in large improvement in short and long term QoL and behavior. Three TT-children and one TE child had been re-operated due to recurrence of obstructive problems, the TE-child and one of the TT-children with adenoidectomy and two of the TT-children with tonsillectomy. Three of the TT-children had tonsil tissue protruding slightly out of the tonsil pouch and twelve TE-children had small tonsil remnants within the tonsil pouches, but with no need for surgery.

Conclusion

Younger children have a small risk of symptom-recurrence requiring re-surgery within two years after TT. For the majority, the positive effect on snoring, infections, behavior and quality of life remain and is similar to TE.

Electronic supplementary material

The online version of this article (doi:10.1186/s40463-014-0026-6) contains supplementary material, which is available to authorized users.

Malpractice claims and unintentional outcome of tonsil surgery and other standard procedures in otorhinolaryngology

BACKGROUND

Septoplasty, tonsillectomy (with and without adenoidectomy) and cervical lymph node excision are amongst the most common 50 inpatient operations in Germany. Intracapsular tonsillectomies (i.e. tonsillotomies) are increasingly performed. The aim of this study was to evaluate technical traps and pitfalls as well as alleged medical malpractice associated with tonsillectomy (TE), adenoidectomy (AE), tonsillotomy (TT), septoplasty (SP) and cervical lymph node excision (LN).

METHODS

A questionnaire was sent to the Regional Medical Conciliation Boards, Medical Services of the Health Insurance Companies (MDK) and Regional Institutes of Forensic Medicine in Germany to collect anonymized cases of complications following TE, TT, AE, LN and SP. The results were discussed in the light of the contemporary medical literature and published trials and verdicts in Germany.

RESULTS

The response rate of our survey was 55.9%. The Institutes of Forensic Medicine contributed nine cases, 49 cases were submitted by the Regional Conciliation Boards and none by MDK. All forensic cases were associated with exsanguinations following tonsillectomy including two children (5 and 8 years of age) and seven adults (aged 20 to 69 years). The fatal post-tonsillectomy hemorrhage (PTH) had occurred 8.7 days on average; four patients experienced the bleeding episode at home (day 5, 8, 9 and 17, respectively). Repeated episodes of bleeding requiring surgical intervention had occurred in 6 patients. Three Conciliation Boards submitted decicions associated with TT (1), AE (4), LN (3), SP (16) and TE (25). Cases with lethal outcome were not registered. Only three of the 49 cases were assessed as surgical malpractice (6.1%) including lesion of the spinal accessory nerve, wrong indication for TE and dental lesion after insertion of the mouth gag. The review of the medico legal literature yielded 71 published verdicts after AE and TE (29), LN (28) and SP (14) of which 37 resulted in compensation of malpractice after LN (16; 57%), TE (10; 37%), SP (8; 57%) and AE (2; 100%). There were 16 cases of PTH amongst 27 trials after TE resulting either in death (5) or apallic syndrome (5). Bleeding complications had occurred on the day of surgery in only 2 patients. 16 trials were based on malpractice claims following SP encompassing lack of informed consent (6), anosmia (4), septal perforation (2), frontobasal injury (2) and dry nose (2). Trials after LN procedures were associated exclusively with a lesion of the spinal accessory nerve (28), including lack of informed consent in 19 cases. 49 cases (69%) were decided for the defendant, 22 (31%) were decided for the plaintiff with monetary compensation in 7 of 29 AE/TE-trials, 9 of 28 LN-trials and 6 of 14 SP-trials. Lack of informed consent was not registered for AE/TE but LN (11) and SP (2).

CONCLUSION

Complicated cases following TE, TT, ATE, SP and LN are not systematically collected in Germany. It can be assumed, that not every complicated case is published in the medical literature or law journals and therefore not obtainable for scientific research. Alleged medical malpracice is proven for less than 6% before trial stage. Approximately half of all cases result in a plaintiff verdict or settlement at court. Proper documentation of a thourough counselling, examination, indication, informed consent and follow-up assists the surgeon in litigation. An adequate complication management of PTH is essential, including instructions for the patients/parents, instructions for the medical staff and readily available surgical instruments. Successful outcome of life-threatening PTH is widely based on a proper airway management in an interdisciplinary approach. Electrosurgical tonsillectomy techniques were repeatedly labeled as a risk factor for bleeding complications following TE. Institutions should analyse the individual PTH rate on a yearly basis. Contradictory expert opinions and verdicts of the courts concerning spinal accesory nerve lesions following LN are due to a lack of a surgical standard.

Intraindividual comparison of 1,470 nm diode laser versus carbon dioxide laser for tonsillotomy: a prospective, randomized, double blind, controlled feasibility trial

INTRODUCTION

The need for reduction of post-tonsillectomy hemorrhage has led to promotion of tonsillotomy techniques for tonsil tissue reduction in obstructive tonsillar hypertrophy. This trial compares ablative tissue effects using 1,470 nm diode laser and carbon dioxide laser for tonsillotomy in an intraindividual design.

METHODS

21 children aged 3-13 years (mean age 6.3 years) underwent laser tonsillotomy for obstructive tonsillar hypertrophy in this double blind, prospective, randomized, clinical feasibility trial. In each of the blinded patients, tonsillotomy was performed using fiber guided 1,470 nm diode laser (contact mode, 15 W power) on the one side and carbon dioxide laser (12 W power) on the other side. An independent, blinded physician documented clinical presentation and patients' symptoms preoperatively and on Days 1, 3, 7, 14, and 21 post-operatively using standardized questionnaire including VAS for each side separately.

RESULTS

The mean duration of operative treatment was 2.7 min using 1,470 nm laser and 4.9 min using carbon dioxide laser respectively. Intraoperative bleeding and the frequency of bipolar forceps use for intraoperative bleeding control was significantly less using 1,470 nm diode laser system. There was no difference in post-operative pain scores between the carbon dioxide laser treated and the 1,470 nm fiber guided diode laser treated side. No infections, hemorrhages or other complications occurred in the course of the 3 weeks post-operative period.

CONCLUSIONS

A fiber-guided 1,470 nm diode laser system offers an efficient and safe method for tonsillotomy as treatment of obstructive tonsillar hypertrophy. Compared to our standard practice (carbon dioxide laser), 1,470 nm laser application provides comparable tissue ablation effects with less intraoperative bleeding and shorter operation time.

1-year follow-up after radiofrequency tonsillotomy and laser tonsillotomy in children: a prospective, double-blind, clinical study

In the last decade, tonsillotomy has come into vogue again, whereas the number of tonsillectomies is decreasing rapidly. In a previous study, the tonsillotomy with laser or radiofrequency therapy proved as a safe and effective procedure with minimal pain and hemorrhage. This follow-up study determines which method is more effective with respect to long-term outcome, recurrence of tonsillar hyperplasia and recurrence of tonsillitis. A prospective, randomised, double-blinded controlled clinical study was conducted at the Department of Otorhinolaryngology of the Ludwig-Maximilians-University, Munich, Germany. Twenty-six children with tonsillar hypertrophy were included. Tonsillotomy was performed on one side with monopolar radiofrequency and on the other side with a carbon dioxide laser. Exactly 1 year after the procedure, all 26 patients were documented by digital photography to define a possible recurrence of tonsillar hyperplasia. All parents were asked for occurring tonsillitis and fulfilled the Glasgow Children's Benefit Inventory (GCBI) for health-related quality of life after surgical procedures. In seven children, a slightly visible recurrence of the tonsillar hyperplasia occurred, without any symptoms or correlation to the different methods and sides. One child with recurrent tonsillitis and hyperplasia had to be tonsillectomized 8 months after the initial tonsillotomy procedure. The specimen showed open crypts with bacterial infection in the deep. The GCBI resulted in highly significant benefits of the surgery in all categories and subcategories. In conclusion, both methods, the laser tonsillotomy and the radiofrequency method, were equal concerning the effectiveness and safety after 1 year. Further investigations have to aim at the long-term outcome after tonsillotomy in patients with recurrent infections.

Comparison of radiofrequency ablation, laser and coblator techniques in reduction of tonsil size

CONCLUSIONS

Coblation was seen to be a much safer method for tonsil reduction surgery with less morbidity and with a higher efficacy in early and long-term follow-up.

OBJECTIVE

The objective was to compare the efficacy, morbidity and safety of three techniques for reduction of tonsil size in tonsillar hypertrophy in children.

METHODS

This was a prospective, randomized clinical study. Seventy-nine children aged 4-13 years with symptoms of tonsillar hypertrophy were included in the study. They were randomized to the coblator (group A), laser tonsillotomy (group B) or radiofrequency (group C) technique for tonsil reduction. The efficacy was evaluated by assessing tonsillar size after surgery. Morbidity was evauated by assessing by postoperative pain and return to normal diet and activity.

RESULTS

Pain on the first day was significantly higher for children in group B (p = 0.0001). The mean values for analgesic usage and number of days until return to normal diet and normal activity were lower in group A. At 1-year postoperative follow-up, the mean tonsil size was higher in group C (p < 0.05). None of the children in group A, two of the children (8.3%) in group B and six of the children (21.4%) in group C need reoperation for tonsillary hypertrophy.

Double-blind, randomised, controlled study of post-operative pain in children undergoing radiofrequency tonsillotomy versus laser tonsillotomy

INTRODUCTION

In the last decade tonsillotomy has come into vogue again, whereas the number of tonsillectomies is decreasing rapidly. Currently, most tonsils are reduced by utilise electrosurgery, radiofrequency or carbon dioxide laser. However, it is not clear whether radiofrequency tonsillotomy is as effective as laser or other surgical techniques in respect of post-operative pain and haemorrhage.

MATERIAL AND METHODS

A prospective, randomised, double-blinded, controlled, clinical study was conducted in the otorhinolaryngology department of Ludwig Maximilians University, Munich, Germany. Twenty-six children with tonsillar hypertrophy were included. Exclusion criteria were: history of peritonsillar abscess, previous tonsil surgery, tonsillitis within two weeks, pain before surgery, psychiatric illness, asymmetrical tonsils, chronic analgesic usage, bleeding disorders and other surgical procedures during the same operation. Tonsillotomy was performed on one side with radiofrequency and on the other side with a carbon dioxide laser. All procedures were performed by a single surgeon, under general anaesthesia. A visual analogue scale was used to measure patients' pain on each side, administered by a 'blinded' nurse on the three post-operative mornings and evenings, within the hospital.

RESULTS

There was no difference in post-operative pain scores or haemorrhage, comparing laser versus radiofrequency tonsillotomy. Patient's overall reported pain was very modest compared with post-tonsillectomy pain. No haemorrhage or other adverse effects were observed.

Penetration of CO2 laser into the otic capsule using a hand-held, flexible-fiber delivery system

BACKGROUND AND OBJECTIVE

Recently, a new, flexible-fiber, CO2 laser delivery system has been FDA-cleared for clinical use. However, for otologic surgery, no data have been reported correlating power settings to depth of penetration into the otic capsule-the bone that covers the inner ear. This was the goal of our study.

STUDY DESIGN/MATERIALS AND METHODS

Eight cadaveric temporal bones were procured as per our institution's protocols. For each specimen, nine different laser holes were burned into the otic capsule using the flexible-fiber CO2 laser delivery system. Power settings were varied from 10 to 20 W in 2 W increments, and duration of exposure was 100, 200, 300, 400, or 600 milliseconds. Each setting (power and duration) was tested on two specimens. Following laser exposure, each specimen was scanned in a microCT scanner, and the depth of penetration measured from these images.

RESULTS

Of the 72 laser shots, 8 were excluded due to double hits (4), oblique hits (3), or complete penetration (1). After excluding these 8, bone penetration was found to vary from 160 to 670 microm based on power and time settings. Spearman analysis on ranked data showed that time had a greater impact on depth than power. The correlation coefficients for time and power were 0.84 (P = 0.013) and 0.40 (P<0.001), respectively.

CONCLUSION

The flexible-fiber CO2 laser is effective for otic capsule ablation in this model. High power setting and long pulse duration can lead to complete penetration of the otic capsule potentially causing damage of underlying structures such as the facial nerve, horizontal semicircular canal, and cochlea.

Tonsillectomy versus tonsillotomy performed with scissors in children with tonsillar hypertrophy

OBJECTIVE

We sought to determine the morbidity and the short and long-term effectiveness of tonsillotomy (partial tonsillectomy) performed with scissors compared with conventional cold knife (total) tonsillectomy.

METHODS

We conducted a 2-year prospective non-randomized study at a tertiary children's hospital. One thousand and twenty-three children were recruited (243 in the tonsillotomy and 780 in the tonsillectomy group). Age, sex, weight, and time of operation, immediately post-operative complications and pain were recorded. Eighteen months after the operation data on weight, parents' satisfaction and recurrence of obstructed symptoms was obtained in 60 randomly selected children of each group.

RESULTS

Post-operative complications rates were very low in both groups and their differences did not reach statistical significance. However, tonsillotomies were significantly better than tonsillectomies in relation to post-operative pain the 1st (P<0.001) and the 7th (P<0.001) post-operative day, and lasted an average of 2.5 min less. Concerning long-term effects, both methods resulted in an increase of patients' weight without the difference in weight increase be statistically significant. In addition, parents' satisfaction as well as oral malodour do not seem to differ significantly. Finally, although twice as many children in the tonsillotomy group had a recurrence of snoring compared to tonsillectomy group, only in about half of them was the problem regarded significant enough by their parents to require medical consultation or reoperation. At the end, an estimated 3.5% of the tonsillotomy group was offered a tonsillectomy in the long term.

CONCLUSION

This trial shows that scissors tonsillotomy in combination with an adenoidectomy is a viable therapeutic option with less immediate post-operative morbidity than tonsillectomy in young children whose sleep disorder breathing is due to a combination of tonsilar and adenoid hypertrophy. However, parents should be informed of the possibility of regrowth and reoperation.

Coblation tonsillectomy: a prospective, double-blind, randomised, clinical and histopathological comparison with dissection–ligation, monopolar electrocautery and laser tonsillectomies

Introduction:

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.

Tonsillotomy or tonsillectomy?—a prospective study comparing histological and immunological findings in recurrent tonsillitis and tonsillar hyperplasia

We evaluated the differences in histological and immunological findings in children with recurrent tonsillitis and tonsillar hyperplasia and assessed the risk for relapsing tonsillar hyperplasia or recurrent tonsillitis after tonsillotomy in a prospective clinical study. Sixty-four children with recurrent tonsillitis underwent traditional (total) blunt dissection tonsillectomy between October 2003 and July 2004. Partial tonsillectomy (tonsillotomy) using CO(2)-laser technique was performed on 49 children with tonsillar hyperplasia and no history of recurrent tonsillitis between August 2003 and March 2005. The present study compares preoperative serum anti-streptolysin-O antibody and immunoglobulin levels (IgG, IgA and IgM), C-reactive protein levels (CRP) and blood leukocyte counts of the two study groups. Additionally the tonsillar tissue removed by tonsillotomy or tonsillectomy was histologically examined in order to determine the grade of hyperplasia, chronic inflammation and fibrosis. Furthermore, the grade of fresh inflammation within the tonsillar crypts of the specimens was analysed. The parents of 40 patients treated by laser tonsillotomy were surveyed in average 16 months. There was no statistically significant difference in preoperative serum anti-streptolysin-O antibody and immunoglobulin levels, C-reactive protein levels and blood leukocyte counts between the two study groups. All specimens showed the histological picture of hyperplasia. There was no statistically significant difference in the grades of hyperplasia between the two study groups. Signs of fresh but mild inflammation within the tonsillar crypts could be found in over 70% of both study groups. Fibrosis only occurred in children with recurrent tonsillitis (9%). In all specimens signs of chronic inflammation could be detected. The histological examinations of specimens from children with repeated throat infections more frequently showed a moderate chronic inflammation of the tonsillar tissue. Two of forty patients treated by tonsillotomy required a subsequent tonsillectomy due to a recurrence of tonsillar hyperplasia but no recurrent tonsillitis occurred. Tonsillotomy with CO(2)-laser technique is an effective surgical procedure with a long-lasting effect in patients with tonsillar hyperplasia. The benefits over conventional tonsillectomy are a lower risk for postoperative haemorrhage, reduced postoperative morbidity and accelerated recovery. Even in children with no history of recurrent tonsillitis signs of chronic inflammation histologically can be found in specimens after tonsillotomy. The occurrence of recurrent tonsillitis after tonsillotomy is rare, however. A low incidence of relapsing tonsillar hyperplasia after tonsillotomy should be expected. Preoperative laboratory investigations show few differences in patients with tonsillar hyperplasia and recurrent tonsillitis. Components of the antimicrobial defense system are also produced by chronically infected tonsils. Therefore tonsillotomy with CO(2)-laser could also be an option in some patients with mild symptoms of recurrent tonsillitis.