Role of nasal valve in the surgically corrected nasal respiratory obstruction: evaluation through rhinomanometry.

The aim of this study was to evaluate the improvement of nasal flow and the fall of nasal resistance in 50 patients that underwent rhinoseptoplasty in our department and discuss the relative importance of valvular and septal deformities in nasal airway obstruction. Fifty consecutive patients underwent rhinoseptoplasty to improve nasal obstruction caused by severe septal deviation, external or internal valvular incompetence, or any combination of the three. We excluded patients with minor septal curvatures, septal perforations, or turbinate hypertrophy. Preoperative and postoperative rhinomanometry was performed on all 50 patients. In all 50 patients, septal and/or valvular surgery lowered nasal resistance in 90% of cases. Septoplasty alone with medial and basal osteotomies did not improve nasal flow (p < 0.4), whereas the correction of valvular obstruction alone increased nasal airflow in a statistically significant way (p < 0.0001). Moreover, patients with both valvular incompetence and septal deviation represented the group in which the greatest preoperative obstruction and the greatest postoperative improvement occurred. Nasal valvular function should be assessed with rhinomanometry in all preoperative rhinoplasty patients with airway obstruction. In many cases, valvular effects may surpass septal deviation as the primary cause of nasal airflow obstruction.     

First findings concerning airflow in noses with septal deviation and compensatory turbinate hypertrophy--a model study

BACKGROUND: The nasal septal deviation is a common cause of nasal obstruction. On the other hand, many septal deviations are asymptomatic. It seems a physiological adaptation occurs on both sides. Septal deviation leads to internal nasal asymmetry, which in turn causes compensatory change in turbinate morphology (e.g. turbinate hypertrophy respectively hypotrophy). This mechanism is investigated with the help of fluid dynamic experiments and functional rhinologic diagnostics. METHODS: Functional models of the nose (modified Mink's boxes) were used and assessment was made by acoustic rhinometry and rhinoresistometry, followed by flow dynamic investigations. Septal deviations of varying position, together with turbinates of differing grades of hypertrophy, were simulated and assessed. RESULTS AND CONCLUSIONS: We observed in models of septal deviation an increase in flow resistance on the ipsilateral side as a result of friction of flow particles in the narrowing. Furthermore, on the opposite side of the deviation, the enlargement of the stream channel did not generally lead to a reduction in flow resistance, but rather to a 'dead space', where only a slow-circling eddy was observed. This eddy causes an increase in turbulence. In vivo turbinate hypertrophy occurs to fill this dead space, thereby reducing turbulent flow without a significant increase in resistance. In cases of moderate septal deviation, compensatory mechanisms of the turbinates can lead to a normalization of nasal airflow and surgical therapy would not be indicated. Deviations in the anterior part of the septum seem to be more symptomatic, because the mechanism is missing and due to the physiological narrowing of the nasal isthmus. To differ between physiologic and pathologic deviation, functional diagnostics are needed.     

Revision septoplasty: review of sources of persistent nasal obstruction

BACKGROUND: Patients with nasal obstruction from septal deviation commonly undergo septoplasty to improve nasal airflow. Some patients suffer from persistent obstruction after their primary septoplasty and may undergo a revision septoplasty to improve their nasal passageway. Our objective was to identify patients who underwent revision septoplasty and to identify their sources of persistent nasal obstruction. METHODS: Patients who underwent septoplasty at our institution between 1995 and 2005 were reviewed. Data is collected on demographics, comorbidities, age at septoplasty, associated and concomitant procedures, surgical approach, and anatomic site of obstruction. RESULTS: Five hundred forty-seven patients met inclusion criteria including 477 who underwent primary septoplasty and 70 who underwent revision surgery. Nineteen percent of nonrevision patients underwent nasal valve surgery along with their primary septoplasty versus 4% of patients in the revision group. Fifty-one percent of revision patients had nasal valve surgery at revision surgery. Patients who underwent sinus surgery along with primary septoplasty were less likely to undergo revision septoplasty. History of facial trauma, obstructive sleep apnea, site of deviation, and performance of inferior turbinate surgery did not affect the likelihood of revision septoplasty. CONCLUSION: A significant number of patients who undergo revision septoplasty also have nasal valve collapse. We recommend that in addition to septal deviation and inferior turbinate hypertrophy, nasal valve function be fully evaluated before performing septoplasty. This will help to ensure a complete understanding of a patient's nasal airway obstruction and, consequently, appropriate and effective surgical intervention.     

鼻整形术:歪鼻整形

歪鼻整形的内容涵盖了鼻的美学及功能。鼻上1/3偏曲的矫正多使用截骨术,鼻中间1/3偏曲通常使用鼻中隔矫正术修复。刻痕、切除、撑开移植物、自体组织撑开瓣等方法被用于矫正鼻背。鼻中隔尾侧偏曲通过刻痕、切除和在鼻前棘上重置鼻中隔来治疗。不同的截骨术用于不同类型的歪鼻畸形。治疗下鼻甲肥大和内鼻阈塌陷是纠正歪鼻气道功能受损的关键。鼻小柱支撑移植物、鼻尖缝合技术和鼻翼基底切除术用于修饰鼻尖和鼻翼。     

Correlation of nasal obstruction with nasal cross-sectional area measured by computed tomography in patients with nasal septal deviation

Objectives: The objective of the present study was to investigate the relationship between the subjective sensation of nasal obstruction and the corresponding cross-sectional area for nasal airflow in patients with a deviated septum. Methods: Seventy-one patients with a diagnosis of unilateral nasal obstruction due to a deviated nasal septum were evaluated by preoperative computed tomography. Anterior anatomic characteristics (the internal nasal valve angle and the cross-sectional areas at the external nasal valve, the head of the inferior turbinate, and the head of the middle turbinate) and posterior anatomic factors (the cross-sectional areas at the openings of the frontal sinus, maxillary sinus, and end of the nasal septum) were examined. Associations between the computed tomography measurements and the subjective severity of nasal obstruction were analyzed with a visual analog scale (VAS). Results: Anterior and posterior anatomic characteristics were associated with the subjective severity of nasal obstruction. Anterior anatomic factors were related to the VAS scores of patients with anterior septal deviation, and posterior anatomic factors were related to the VAS scores of patients with posterior septal deviation. Conclusions: This study indicated that the anterior and posterior parts of the nasal cavity are both related to nasal obstruction. In some patients, the posterior part of the nasal cavity was more important than other locations in causing nasal obstruction.     

Chronic inferior turbinate enlargement and the implications for surgical intervention

Nasal obstruction due to chronic enlargement of the inferior turbinate is a common problem for the ENT surgeon. This review will discuss the pathology of 'bilateral' and 'unilateral' turbinate enlargement associated with chronic rhinitis and nasal septal deviation, and focus on the structural changes in the turbinates. Cellular hyperplasia, tissue oedema and vascular congestion all contribute to turbinate enlargement, but there is some evidence that bony enlargement is associated with unilateral turbinate enlargement. There is no evidence for cellular hypertrophy despite the common use of the term 'turbinate hypertrophy' and this term should be replaced with the more correct term of 'turbinate enlargement'. The underlying pathology of turbinate enlargement has important implications for the surgical management of nasal obstruction.     

How we do it: Radiofrequency‐turbinectomy for nasal obstruction symptoms

? Radiofrequency energy has been reported to be effective to reduce nasal obstruction because of inferior turbinate hypertrophy. ? A total of 158 patients who had undergone such surgery are reported. ? Three to 30 months postoperatively 85% of the patients reported a marked decrease in nasal obstruction. This was irrespective of a short‐term or a long‐term follow‐up, and was applicable to patients that had septal deviations in addition. ? Radiofrequency‐turbinectomy is a simple and effective method for treatment of nasal obstruction as a result of hypertrophy of the inferior turbinates, even if combined with a moderate septal deviation.     

Histopathological verifications clinical indications in the inferior turbinoplasty

Surgical treatment in cases of disturbances of nasal patency caused changes in the nasal inferior turbinates are controversial. The authors performed the microscopic (light microscope) and morphometric examinations of mucous membrane of the nasal inferior turbinates obtained after inferior turbinoplasty in patients with vasomotor and perennial allergic rhinitis and compensation hypertrophy of nasal inferior turbinate accompanied of nasal deviation septum. Analysing of morphologic changes in mucous membrane of the nasal inferior turbinates verified of clinic indications to inferior turbinoplasty.     

Cryosurgery of the inferior nasal turbinates

Forty-seven patients with irreversible nasal obstruction due to inferior turbinate hypertrophy were treated by cryosurgery, the short and medium term results having been clinically evaluated. Permanent good results in nasal breathing were achieved in 83% of the patients. Failures are mostly related to turbinates hypertrophy due to nasal allergy. The combination of cryosurgery and nasal septoplasty, in cases of hypertrophy associated with deformities of nasal septum, gives an excellent result. Cryosurgery of hypertrophic nasal turbinates is a simple, safe, and reliable procedure to improve nasal breathing in cases of nasal turbinate hypertrophy.     

Secondary surgical treatment of intranasal deformities of the unilateral cleft palate nose

Intranasal as well as external nasal repair is desirable in the total repair of the unilateral cleft palate nose and in many instances can be achieved concurrently. Carefully performed septal reconstruction will correct the nasal obstruction due to the severe septal deviation to the cleft side and the usual caudal dislocation to the uninvolved side. Since a minimal amount of cartilage is removed, good support is Mayntained for the cartilaginous dorsum. Appropriate management of the turbinates, including extraction, infraction, submucous intramural electrocoagulation, or partial submucous resection will improve the functional result. Because of the better positioning of the septum, some of the alar and columellar abnormalities may be cosmetically improved, and repositioning of the ala or columella will enhance the esthetic appearance.     

A comparison of anterior and radical trimming of the inferior nasal turbinates and the effects on nasal resistance to airflow

A study of 18 patients with chronic rhinitis who underwent anterior or radical trimming of the inferior turbinates is presented. Radical trimming produced a significant decrease in both total nasal resistance to airflow and subjective nasal obstruction (P less than 0.005). Anterior trimming produced a significant decrease in total nasal resistance to airflow (P less than 0.05), but had no significant effect on subjective nasal obstruction. These results suggest that the main site of nasal resistance in patients with chronic rhinitis is the same as in the normal nose. On the basis of this study, adoption of anterior trimming in place of radical trimming of the inferior turbinates cannot be recommended.     

A new classification of septal deviations

STATEMENT OF PROBLEM: Existing nomenclatures of septal deviation deal with the deformation of the nasal septum exclusively and are rarely used in daily clinical work. The aim of this study was to develop a classification of septal deviations based upon the anatomical structures of the nasal septum and common clinical concepts. METHODS OF STUDY: We included patients undergoing septoplasty alone or in combination with rhinoplasty or functional endonasal sinus surgery by reason of septal deviation. Immediately after surgery, the surgeon recorded intraoperative findings of the nasal septum and the nasal turbinates in a data sheet and a standardized drawing for every patient. MAIN RESULTS: Data from 1088 patients were analyzed. Six types of septal deviations were identified. This new classification of septal deviations was developed with special regard to clinical anatomical findings. Leading as well as concomitant pathological findings were assigned to the six types of septal deviation. The frequencies of occurrence of hyperplasia of the inferior turbinate and concha bullosa of the middle turbinate were specified. PRINCIPAL CONCLUSION: The systematic assessment of relevant structures may help to develop improved surgical strategies. Furthermore, the systematic teaching of young surgeons to perform septal surgery may be facilitated.     

Filtration of Particulates in the Human Nose

This report reviews the current theories on the deposition of inhaled particulates in the human nose. The inhalation of particulates represents a challenge to the upper respiratory tract. The concentration of airborne particulates and pollutants varies between occupational and nonoccupational exposure. Regional deposition of potentially hazardous inhaled material determines the local and systemic toxicity. In vitro experiments using casting and molding techniques with water dye models or laser Doppler anemometry indicate that nasal airflow is determined by the size of the nasal valve and the turbinates. The main airstream during inspiration passes through the lower nasal passage. Filtration capacity of the human nose can be expressed mathematically or experimentally. In vivo experiments applying monodisperse or polydisperse aerosols during single or multiple respiratory cycles have shown by using microscopic or laser-optic identification that particles larger than 3µm have a maximum deposition in the anterior part of the nose (nasal valve). Particles smaller than 3 µm and larger than 0.5 µm are filtered by the nasal mucosa and transported by cilia propulsion to the nasopharynx. The filtration for particles smaller than 0.5 µm is low. They seem to pass easily into the lower respiratory tract. This knowledge has an impact on nasal septal surgery and rhinoplasty. By influencing the structure of the nasal valve and the lower turbinates, the filtration capacity of the nose can be significantly decreased.     

Long-term results after argon plasma coagulation (APC) inferior turbinates reduction

Interior turbinate hypertrophy is one of the major causes of nasal airway obstruction. Medical treatment often produces insufficient improvements. In these cases, surgical reduction of inferior turbinates can be proposed. Authors analyzed long-term results of argon plasma coagulation (APC) for inferior turbinates reduction in patients with chronic nasal obstruction. Rhinomanometric parameters, clearance of saccharine test results and cytological examination were statistically analyzed in 70 patients after 3 month and in 47 after 12 month after surgery. Five patients received a second operation. Only patients with first degree in T/S (turbinate/septum) nasal septum deviation were enrolled in both groups. Every patients were treated ineffectively with nasal drops. All patients received topical anesthesia. The procedure of APC were easy to perform end we did not experience postoperative bleeding. Rhinomanometric measurement demonstrated a significant nasal flow at 3 and 12 month after APC. Before 3 and 12 month after surgery the values for resistance shoved significant difference. There were no changes in saccharine transit - time during the follow-up period. At 3 postoperative month, the nasal stuffiness had improved 62 (88%) patients. At 12 month after surgery, the nasal stuffines had improved 34 (73%) patients. APC was shown to effectively reduce the symptom of nasal obstruction without any complications. Argon Plasma Coagulation should be an alternative method in treating the patients with hyperplastic inferior turbinate.     

Spätergebnisse nach submuköser Septumresektion (Killian)

Summary 250 patients were re-examined 1–19 years after submucous septum resection. In 67% the nasal passage was normal or had improved. In 33% nasal obstruction was still present or had increased: In more than 50% of these unsatisfying results we found a septal deformity before or in the valve area. Other operative sequelae were: In 45% a dry mucosa with crust formation, in 38% hypertrophy of the lower turbinates, in 13% instability of the septum, and in 9% perforation of the cartilaginous septum. Most complaints developed within the first postoperative year. Because of these drawbacks the submucous resection should be replaced by septoplasty with its better long-term results.     

Trimming of the inferior turbinates: a prospective long-term study

The aim of this study was to determine whether the initial benefits of radical trimming and anterior trimming of the inferior turbinates on nasal airflow persisted in the long term. Radical trimming significantly reduced nasal resistance at 2 months following operation (n = 12) (P less than 0.005). There was no significant change in nasal resistance over the next 20 months. Symptom scores for nasal obstruction also showed a significant reduction (n = 16) (P less than 0.005), at 2 months, and did not change significantly over the next 20 months. Radical trimming of the inferior turbinates is a highly effective operation in patients with hypertrophy of the inferior turbinates with few initial complications. However, further analysis of the data revealed that up to 20% of patients lose the initial subjective benefit of relief of nasal obstruction within 2 years of follow-up. Late onset crusting occurs in some patients though this is not directly attributable to an increase in nasal airflow. This study also concludes that anterior trimming of the inferior turbinates cannot be recommended as a form of treatment.     

Histopathology of the inferior turbinate with compensatory hypertrophy in patients with deviated nasal septum

OBJECTIVE: To measure the dimensions, composition, and possible structural and/or histopathological changes of the compensatory hypertrophic inferior turbinate in patients with deviated nasal septum. STUDY DESIGN: A prospective, nonrandomized, and morphometric study. METHODS: Nineteen patients with deviated nasal septum and compensatory hypertrophy of the inferior turbinate in the contralateral nasal cavity underwent surgery for correction of nasal obstruction. Patients' specimens were compared with those of a control group consisting of 10 inferior turbinates removed at autopsy. Quantitative measurements of the inferior turbinate histological sections were carried out and included the width of the layers and morphometric calculations of the relative proportions of the soft tissue constituents. Also, qualitative study was performed to detect pathological changes. RESULTS: Of all layers, the inferior turbinate bone underwent a twofold increase in thickness and manifested the most significant expansion (P < or =.001), whereas the contribution of the mucosal layers to the inferior turbinate hypertrophy was modest. The morphometric analysis revealed a larger proportion of venous sinusoids in hypertrophic turbinates, but the difference was small and statistically insignificant. Qualitative assessment disclosed normal mucosal architecture in all inferior turbinates with compensatory hypertrophy. Eleven remained intact, while eight disclosed mild to moderate pathological changes. CONCLUSIONS: The data gathered in the present study are of importance to the decision-making process regarding turbinate surgery. The significant bone expansion and the relative minor role played by the mucosal hypertrophy would support the decision to excise the inferior turbinate bone at the time of septoplasty.     

S M R of inferior turbinate in chronic hypertrophic rhinitis

A study was undertaken to evaluate the role of unilatcral/bilateral submucous resection of the inferior turbinates in fifty cases of chronic hypertrophic rhinitis. Patients associated with deflected nasal septum or sinus infectious were excluded from the study. Decongesiton of turbinates was done to exclude the cases with predominantly mucosal hypertrophy. Gertner (1984) plate method was used to asses the nasal patency preoperatively and then post-operatively at 1, 3 and 6 months follow up. The analysis of observations made revealed SMR of inferior turbinate to be a very effective modality tor relieving nasal obstruction due to bony turbinal hypertrophy. The procedure has least interference with nasal mucosal integrity and functions and complications associated with the procedure have been found to be minimal. Histopathological examination of mucosa and of ostenid tissue revealed infiltration by chronic inflammatory cells suggesting chronic nonspecific inflammation either due to non-specific infections and / or allergy).     

鼻中隔偏曲伴下鼻甲肥大患者的鼻窦CT分析

目的　通过对鼻中隔偏曲患者鼻窦CT的测量分析,初步评价鼻中隔偏曲程度与下鼻甲肥大的相关性。方法　分析98例鼻中隔偏曲患者鼻窦冠状位CT,将与鼻中隔偏曲方向一致的鼻腔设为对照组,与鼻中隔偏曲方向相反的鼻腔设为实验组。测量并记录鼻中隔偏曲角度,双侧下鼻甲骨、内侧黏膜、外侧黏膜厚度。结果　实验组和对照组下鼻甲内侧黏膜、骨、外侧黏膜厚度差异有统计学意义（P <0.05）。实验组下鼻甲内侧黏膜、骨、外侧黏膜厚度差异有统计学意义（P <0.05）。实验组下鼻甲内侧黏膜、骨、外侧黏膜厚度与鼻中隔偏曲角度的相关性无统计学意义,但相关系数r 提示三者与鼻中隔偏曲角度的相关性：骨＞内侧黏膜＞外侧黏膜。结论　鼻中隔偏曲伴代偿性下鼻甲肥大,不仅由下鼻甲黏膜增厚引起,也可由下鼻甲骨本身增生引起,鼻中隔矫正术术前行鼻窦CT检查,对鼻中隔偏曲伴下鼻甲肥大患者手术方式的选择有一定帮助。