Combined external and endoscopic frontal sinusotomy with stent placement: a retrospective review.

OBJECTIVES: To examine the long-term results of combined external and endoscopic frontal sinusotomy using frontal sinus stents and to compare our results with those reported for the endoscopic Lothrop procedure. STUDY DESIGN: We performed a retrospective review of 40 patients with chronic frontal sinusitis refractory to medical management who underwent a total of 62 combined external and endoscopic frontal sinusotomies with stent placement. All procedures were performed by the senior author at Vanderbilt University Medical Center. MAIN OUTCOME MEASURES: Postoperative nasofrontal duct patency and subjective patient improvement based on the last clinical examination. RESULTS: The overall patency rate of the nasofrontal duct was 79% (95% confidence interval [CI] of +/-10%.) The overall subjective patient improvement rate was 78% (95% CI of +/-14%.). The average length of stent placement was 5 weeks. The mean patient follow-up time was 12 months. There were no surgical complications. The nasofrontal duct patency rate and patient improvement rate from our study did not differ statistically from results reported by other authors using the endoscopic Lothrop procedure. CONCLUSION: We have found endoscopic frontal sinusotomy, in conjunction with external frontal sinusotomy and placement of frontal sinus stents, to be as effective in obtaining frontal sinus patency rates and overall patient improvement rates as the endoscopic Lothrop procedure.

Osteoplastic flap for obliteration of the frontal sinus: five years' experience.

The objective of this retrospective study was to evaluate the osteoplastic flap (OPF) for the obliteration of the frontal sinus in this current era of endoscopic management of frontal sinus disease. A review of consecutive OPF procedures (n = 43) performed by the senior author (J.A.D.) from 1992 to 1997 was carried out. Data were gathered regarding chief symptom, medical history, previous sinus surgery, endoscopic findings in the office and at surgery, CT scan findings, and follow-up results (mean 19.4 months). Previous endoscopic management of frontal sinus disease had failed in 24% of patients; 97% had eventual resolution of frontal sinusitis with OPF. After OPF, 63% also had improvement or resolution of disease in other paranasal sinuses. Statistically significant, positive correlations (P < 0.05) were noted between the resolution of frontal sinusitis and improved or resolved pain, as well as the resolution of frontal sinusitis and improved or resolved infections in other paranasal sinuses. In 1998 OPF remains the standard for treating frontal sinus disease refractory to other methods. OPF can decrease the pain associated with frontal sinus infections and has a positive impact on inflammatory disease in other paranasal sinuses.

Inhibition of subglottic stenosis with mitomycin-C in the canine model.

The objective of this randomized, prospective study was to study the efficacy of topical mitomycin-C in the inhibition of subglottic stenosis in a canine model. Subglottic stenosis was elicited with the carbon dioxide laser in 10 mongrel dogs. Radial incision and serial dilation of the subglottic airway were then carried out. The animals were randomized to receive a topical solution of 1% mitomycin-C to the dilated area for a 5-minute duration or no further treatment. Weekly direct microlaryngoscopy and photodocumentation were performed during the 6-week study. Airway distress developed in 4 of the 5 control dogs, requiring early sacrifice, while all treatment group animals survived the duration of the study (p < or = .006). Morphometric analysis of the subglottic photographs confirmed a greater than 100% increase in the percentage of relative airway at sacrifice in the treatment group (p < or = .049). A statistically significant (p < or = .015) decrease in collagen formation in the subglottic scar of dogs treated with topical mitomycin-C was documented. Mitomycin-C favorably altered the clinical progression of subglottic stenosis, improved quantified airway patency, and reduced the amount of subglottic collagen formation in the canine model.

Analysis of a critical pathway in osteoplastic flap for frontal sinus obliteration.

OBJECTIVES: A critical pathway was applied to patients undergoing osteoplastic flap (OPF) for frontal sinus obliteration to determine whether efficiency could be improved. STUDY DESIGN: A retrospective review of consecutive OPF procedures (n = 51) performed between 1992 and July 1997 was conducted. METHODS: The patient groups were subdivided into those who underwent OPF alone and those who had endoscopic sinus procedures performed in addition to OPF. Comparisons were made between the precritical pathway and post-critical pathway groups, specifically noting operative time, total operating room (OR) time, estimated blood loss (EBL), length of hospital stay, and costs. We used a critical pathway that was developed for endoscopic sinus procedures at our institution through a multidisciplinary team approach. Preoperative evaluation and testing, intraoperative equipment and medications, and postoperative care including follow-up clinic visits were all standardized. An unpaired, two-tailed Student t test was used to evaluate the data. RESULTS: Statistically significant (P<.05) reductions in operative times, total OR time, EBL, and length of hospital stay were observed in the post-critical pathway group who underwent endoscopic sinus procedures as well as OPF. Costs to the OR were reduced 29% and 15% for OPF and for OPF with endoscopic surgery, respectively. Patient costs were reduced 5% and 4% in these groups, respectively. CONCLUSIONS: With implementation of effective critical pathways, significant decreases in length of stay are seen, and cost reductions can be realized through the improved efficiency, shortened OR times, and decreases in redundancy of ordering materials.

Incidence of frontal sinusitis following partial middle turbinectomy.

The role of partial middle turbinate resection as an adjunct to endoscopic sinus surgery is controversial. Recent literature suggests that middle turbinate resection may have a detrimental effect on the frontal sinus. A retrospective analysis of 155 consecutive patients undergoing partial middle turbinate resection utilizing the technique of the senior author (J.A.D.) for either sinusitis or nasal obstruction was conducted. The data reveal a low rate of frontal sinusitis following partial middle turbinectomy (10%). None of the patients undergoing partial middle turbinectomy for nasal obstruction developed frontal sinusitis postoperatively. No major complications were encountered. Frontal sinusitis following middle turbinectomy was often associated with preoperative comorbidity such as asthma, nasal polyps, severe disease score on computed tomography, or diseased middle turbinates. The authors conclude that partial middle turbinectomy for treatment of sinusitis and nasal obstruction has a low incidence of postoperative frontal sinusitis. Development of frontal sinusitis may be predictable on the basis of several comorbid factors.

Laryngotracheal reconstruction in the adult: a ten year experience.

The purpose of this study is to retrospectively analyze our experience with airway reconstruction, to outline a new staging system for laryngotracheal (LT) stenosis, and to identify preoperatively those patients likely to fail reconstruction. We reviewed 41 patients who underwent 46 LT reconstructions over the past 10 years. Success was judged by the ability to decannulate patients within 1 year postoperatively. Of our patients, 63% were treated successfully, and an additional 17% had intermediate success. The techniques used for laryngotracheoplasty with augmentation grafting and tracheal resection are reviewed. Major complications, thoracic complications, and wound complications are presented. Each patient was staged by the McCaffrey staging system and Cotton grades. We propose a new staging system based on the extent of the stenosis throughout the glottis, subglottis, and trachea. It is logical and easy to use. Applied to our cases of LT stenosis retrospectively, the new system predicts clinical success (chi2, p = .05). Using contingency tables and chi2 testing for statistical evaluation, we found that diabetics have a significantly higher failure rate (chi2, p = .0002). Further, we identified a group of patients who in addition to the airway stenosis also had comorbid medical conditions that frequently necessitate a tracheostomy. These patients have a significantly higher failure rate (chi2, p = .009). Using this information and applying the staging system prior to reconstruction, we can identify patients likely to fail.

Comparison of sinus computed tomography staging systems.

In an attempt to establish a standardized rating system for CT of the paranasal sinuses, the Committee on Rhinology and Paranasal Sinus Disease of the American Academy of Otolaryngology-Head and Neck Surgery instituted a protocol for the review of sinus CT scans at six international sites. Fifty identical scans were rated by four otolaryngologists at each site according to five established sinus CT staging systems. Twenty of 24 reviewers repeated the rating session at least 1 week later to determine intrarater variability. The number of CT scans that could not be classified by a particular rating system ranged from 1.3% to 5.5%. The range of intrarater agreement (kappa = 0.39 to 0.74) exceeded that of interrater agreement (kappa = 0.18 to 0.49). A skewed distribution of CT scans resulted in a system with high rater agreement but poor ability to differentiate among disease states. The use of a numeric rating system to assign a score to each scan produced a comprehensive and disease-sensitive system, but one with low rater agreement. A precise definition of mucosal thickening in terms of millimeters appeared to enhance the raters' ability to assign stage and improve a system's comprehensiveness and reproducibility. On the basis of these findings, recommendations are made for the use of CT rating systems to study clinical outcomes in patients with chronic sinusitis.

Extended middle meatal antrostomy: the treatment of circular flow.

Intranasal surgery has changed significantly over the years. The inferior meatal antrostomy has lost favor to the more physiologic middle meatal antrostomy which includes the natural ostium. Difficult-to-cure patients may exhibit mucous stasis due to circular flow between ostomies. Kennedy described circular flow in both the experimental model and the clinical arena. We have enlarged his definition of circular flow to include the flow of mucus from the natural ostium or a surgically created ostium to any accessory ostium, either natural or surgically created. We present the extended middle meatal antrostomy, a technique which prevents circular flow and allows the mucociliary system to provide for physiologic drainage of the maxillary sinus. This technique is demonstrated in this report to be safe and effective in the treatment of chronic maxillary sinusitis.

Open surgical techniques for laryngotracheal stenosis.

Adult subglottic and proximal tracheal stenoses are some of the most crippling complications of endotracheal intubation or other laryngotracheal trauma. Subglottic stenoses are a part of the broader category of laryngotracheal stenoses that comprises any lesion from supraglottic larynx to trachea. Patients with laryngotracheal or tracheal stenosis may present with stridor, shortness of breath, or exercise intolerance and may be tracheotomy dependent. The surgeon must have several choices of procedures available to correctly treat the variety of lesions that may occur. This article briefly outlines the pathophysiology of subglottic and tracheal stenosis and discusses in detail the open procedures available.

Clinical applications of lasers in otolaryngology--head and neck surgery.

The use of lasers in otolaryngology--head and neck surgery is described from the invention of the laser in 1960, through the current uses of the laser, and concludes with a summary for the future directions of laser surgery. The various lasers, including the argon, the KTP, and the carbon dioxide lasers used in otolaryngology, are briefly described. The applications of lasers in the larynx, sinuses, and the ear are separately covered, as well as pediatric otolaryngology. In addition to a brief description of the procedure, the complications and limitations are given. Anesthetic considerations are also covered.

Difficulties in endoscopic removal of Teflon granulomas of the vocal fold.

The difficulties in treating granulomas resulting from Teflon injection into the vocal fold are underreported in the literature. We have reviewed our experience with nine patients undergoing 27 procedures for Teflon granuloma. Two patients required tracheotomy before undergoing endoscopic granuloma removal because of airway compromise, and a third required urgent tracheotomy following endoscopy. One of the patients requiring elective tracheotomy had a granuloma that extended across the midline to the contralateral arytenoid, causing its fixation. Arytenoidectomy was required for decannulation in this patient. In all but one patient the granuloma nearly completely replaced the thyroarytenoid muscle. This extensive involvement often precludes the adequate excision of the granuloma in a single procedure; however, the microflap technique allows mucosal preservation to facilitate future procedures. In some cases the granuloma destroys large amounts of mucosa, and a microflap cannot be elevated and saved. The difficulties of excision are related to the near-total replacement of the thyroarytenoid muscle by granuloma. This paper will help the otolaryngologist--head and neck surgeon understand this destructive process and the resulting difficulties in surgical rehabilitation.

Microsubglottoscopy: an expansion of operative microlaryngoscopy.

The development of the adult subglottiscope has facilitated expansion of the indications for operative microlaryngoscopy to include surgery in the subglottic region of the larynx, as well as in the upper cervical trachea. A set of microlaryngeal instruments with an elongated shaft has been developed to support the use of the subglottiscope in the adult patient population. During the 18-month period from January 1, 1988, through June 30, 1989, sixteen adult patients with subglottic or upper cervical tracheal pathology were operated on a total of twenty-three times, using the adult subglottiscope to facilitate exposure and treatment. The patients' pathologic conditions included subglottic stenosis, subglottic granuloma, subglottic extension of laryngeal hemangioma and papilloma, and suprastomal granuloma. Two selected cases are presented to highlight indications for the use of this instrument. We have found the exposure of these subglottic and upper cervical tracheal lesions, using the binocular, microlaryngeal approach facilitated by the adult subglottiscope, to be improved over that obtained with existing microlaryngoscopes or conventional tracheoscopes.

Electrosurgery-induced endotracheal tube ignition during tracheotomy.

Electrosurgery was the most common source of ignition for operating room fires prior to the advent of lasers. When combined with volatile anesthetic mixtures, electrosurgery has caused ignition of plastic, rubber, paper, enteric gases, and combustible preparation solutions. We report on an intubated patient whose polyvinyl chloride endotracheal tube ignited during a tracheotomy performed with an electrosurgical unit. The oxygen-rich environment, the polyvinyl chloride tube, and the heat generated by the electrosurgical unit combined to produce a fire. Since otolaryngologists are called upon often to perform tracheotomies on intubated patients, it is imperative that they understand the factors involved in the development of such a fire. This case is presented with an explanation of why this type of fire occurs. A brief review of the literature is included. Different kinds of electrosurgical units, precautions as to their use, and the management of electrosurgery-induced endotracheal tube fires are also discussed.

Endoscopic laser arytenoidectomy revisited.

Arytenoidectomy is currently the most reliable method of treating patients with bilateral vocal cord paralysis. Although both endoscopic and external approaches have been described, the endoscopic laser technique is more desirable because it requires no incision and allows for the immediate assessment of airway size. Eleven patients with bilateral vocal cord paralysis treated by endoscopic laser arytenoidectomy were presented in 1984. At that time, 10 of the 11 patients had been successfully decannulated. Follow-up on that group of patients revealed that 7 of the 10 successfully treated patients remain decannulated with a good airway, although 2 of these patients required a revision procedure to excise a granuloma. One patient failed at 15 months and has failed two subsequent revision operations, and 2 patients have been lost to follow-up. Since 1984, 17 additional patients with bilateral vocal cord paralysis have been treated by the authors using the same endoscopic laser arytenoidectomy technique; all have been successfully managed, with a minimum follow-up of 3 years. The technique of this operation will be reviewed. This study demonstrates the clinical usefulness of endoscopic laser arytenoidectomy in the treatment of bilateral vocal cord paralysis.

Laser application in the tracheobronchial tree.

The use of lasers has greatly expanded our ability to treat diseases of the tracheobronchial tree. We must be aware of the advantages and disadvantages of each particular wavelength. In addition, the specific safety precautions for each laser wavelength must be followed closely.

Laryngotracheal reconstruction with composite nasal septal cartilage grafts.

The composite nasal septal graft has been used successfully by us to reconstruct patients with high tracheal and laryngotracheal stenosis. We have treated ten patients and have been able to decannulate seven of these patients. When these ten cases are added to the six original cases presented in an earlier report (1981), certain conclusions can be drawn. The success or failure of these procedures, which is judged by the ability to decannulate the patient, appears to be related to the extent of the initial injury. We discuss the indications for the composite nasal septal graft and the use of additional treatment, including stents, steroid injections, dilatations, and flaps. In conclusion, the addition of these ten cases to the original six cases of composite nasal septal grafts now provides the opportunity to review indications and contraindications for the use of this graft in the management of advanced laryngotracheal stenosis.