Introduction
Nasal obstruction affects approximately 25% of the population. 1 It is a symptom that can affect people of all ages and ethnicities. It has some degree of morbidity, which varies with the severity and cause of nasal obstruction. The main causes are: septal deviation, inferior and medial turbinate hypertrophy, nasal polyps, and pharyngeal tonsil hypertrophy.1 Of all of these alterations, inferior turbinate hypertrophy is the most common cause of nasal obstruction. 2 The leading causes of inferior turbinate hypertrophy are allergic rhinitis, vasomotor rhinitis, and septal deviation (compensatory hypertrophy). 3 Bilateral nasal obstruction usually occurs with mucosal disease. When associated with watery rhinorrhea, sneezing, and nasal itching, it is characteristic of nasal mucosa inflammatory edema, especially of allergic nature. 4
Rhinitis is inflammation of the nasal mucosal lining, characterized by the presence of one or more symptoms: nasal congestion, rhinorrhea, sneezing, itching, and hyposmia. 5 Nasal obstruction is one of the most inconvenient symptoms for the patient. 4 The diagnosis of allergic rhinitis includes personal and family history of atopy, physical examination, and complementary exams. The diagnosis is essentially clinical, taking into account the association of the several symptoms. 5 The most important complementary exams in the diagnosis of allergic rhinitis, for both specificity and sensitivity, are immediate hypersensitivity skin prick test (SPT) using the puncture technique and evaluation of serum levels of allergen-specific IgE.5
The determination of specific IgE in vitro may be accomplished by several enzyme immunoassay methods, and more recently, by immunofluorescence. Specific IgE assay in vitro for individual allergens, when performed with standardized antigens and adequate technique, has operational characteristics (sensitivity and specificity) that are similar to those of the skin prick test: sensitivity of 89% and specificity of 91%.5 Treatment includes both non-pharmacological - environmental control - and pharmacological measures. The latter are based on antihistamines, decongestants, topical and systemic corticoids, and other medications such as ipratropium bromide, chromoglycate disodium, and anti-leukotrienes.
Immunotherapy and the use of saline solution for nasal irrigation are other choices. Modern pharmacology offers many options for clinical treatment of inferior turbinate hypertrophy, whatever the source is. However, although still a controversial issue, most authors agree that when clinical treatment is not sufficient to provide adequate nasal airways, surgical treatment should be indicated. 6, 7
Surgical treatment of allergic rhinitis refractory to clinical treatment is directed to the inferior turbinates and aims to increase the nasal cavity without altering nasal physiology. 5 The search for effective nasal turbinate treatment has stimulated the surgical skill of rhinologists for over 100 years. 8
Surgical procedures that aim to reduce mucosal or bony hypertrophy of the inferior nasal turbinate, or both, include: corticosteroid infiltration, lateral dislocation of the nasal turbinate, partial turbinectomy, lower turbinoplasty, cryosurgery, laser vaporization, and radiofrequency. Turbinoplasty is a procedure aimed at reducing the size of the inferior turbinate through exuberant bone removal and meatal surface removal with greater mucosal preservation. It allows reduction of the turbinate volume, while maintaining the physiological functions of the mucosa. 4 It is performed through an incision along the border of the turbinates, detachment and exposure of the bone surface, followed by bone and redundant mucosa removal, covering the remaining bone with the excess mucosa. 4 Nasal turbinate surgery is one of the most frequently performed procedures in otorhinolaryngologists' daily practice, recognized as an effective treatment for nasal obstruction secondary to hypertrophic rhinitis. 9
There are several studies in the literature that assessed the improvement in nasal obstruction after the inferior turbinate operation. However, the literature is poor in assessing the impact of turbinate surgery on symptoms such as rhinorrhea, sneezing, and nasal itching. 10, 11 It is also poor in assessing symptoms such as anosmia, snoring, and headache.
Aim
The aim of this study is to assess the efficacy of inferior turbinoplasty surgery on obstructive and non-obstructive symptoms in patients with and without allergic rhinitis.
Materials and Methods
This longitudinal contemporary cohort study involved 57 patients treated on an outpatient basis, prospectively evaluated and submitted to inferior turbinoplasty surgery from may 2017 to april 2019, all performed in the saraswathi institute of medical sciences, hapur, U.P. All patients had inferior turbinate hypertrophy and nasal obstruction refractory to medical treatment with at least two months of topical nasal corticosteroid and systemic antihistamine use, and no other nasal conditions, such as septal deviation, middle concha bullosa, or hypertrophic middle turbinate.
Patients were divided into two groups: group I - patients with nasal obstruction and symptoms of rhinorrhea, sneezing, and itchy nose - were considered as having allergic rhinitis; and group II - patients with nasal obstruction without the other described symptoms - were considered without allergic rhinitis.
All patients were operated on by the same surgeon, under local anaesthesia or general anaesthesia depending upon patient.
The following inclusion criteria were used: patients with chronic nasal obstruction, without improvement after standard medications (systemic and topical corticosteroids and systemic antihistamines) for at least two months; aged between 14 and 70 years; willing to participate in the study and to answer the protocol questions; available to return for reassessment seven, 30, and 90 days after surgery; patients with irreversible hypertrophy of the inferior turbinate; patients divided into groups with and without allergic rhinitis, based on the symptoms of itching, sneezing and rhinorrhea, in addition to nasal obstruction.
Patients with any significant anatomical alterations (apart from inferior turbinate hypertrophy) that generated nasal obstruction (septal deviation, middle concha bullosa, nasal valve alterations, nasal tumors of any nasal-sinus origin, retro-nasal or paranasal masses, choanal imperforation, septal perforation, uncinate process abnormalities, nasal polyps, adenoid hypertrophy); those who showed improvement after clinical treatment; pregnant women; those who could not undergo the turbinoplasty due to clinical status; and those not willing to participate and answer the protocol questions were excluded.
The turbinoplasty surgery technique consisted of the following: incision in the center of the inferior turbinate in its horizontal extension (Figure 1); detachment of the entire mucosa above the incision, creating a mucosal flap; next, the turbinate was incised in the anterior-posterior direction using turbinectomy scissors and then one of the scissors blades was directed to the mucosa detached from the bone in the upper part of the turbinate, while the other was directed to the inferior meatus (Figure 2), thereby removing most of the bone and all its lateral mucosa; the medial mucosa was removed only below the incision, as the mucosa above was used to cover the bony remnant, thereby removing 50% of the medial mucosa (septal surface), 100% of the lateral mucosa (meatal surface), and 70% of the bony turbinate (Figure 3). Subsequently, the bone spicules were removed with a chisel to reduce the bulging of the remaining turbinate (Figure 4), and then electrocautery was used to cauterize occasional bleeding spots.
Statistical analysis of pre-, trans- and postoperative parameters was carried out, comparing the differences between groups I and II. The significance level was set at p < 0.05, using the chi-squared and Fisher's exact tests.
Results
A total of 57 patients were included in this study, of whom 39 were diagnosed with allergic rhinitis (group I) and 18 without allergic rhinitis (group II). Preoperative data are shown in Table 1 . The sample included 30 male individuals, 20 in group I and ten in group II; and 27 females, with 19 in group I and 8 in group II.
Table 1
Preoperative parameters.
Age ranged from 14 to 70 years, and there were no statistically significant differences between patients with and without allergic rhinitis (p = 0.642).
Nasal obstruction intensity was evaluated in both groups. Most of the patients had moderate to severe complaints in the groups, with no statistically significant differences between them.
As for the presence of preoperative snoring, it was found that most of group I patients snored (29 [74.4%]), whereas nine patients in group II (50%) snored, with no statistically significant differences (p = 0.07).
Regarding the presence of facial pressure, 22 patients had the symptom, 16 in group I (41%) and six in group II (33.3%). These numbers did not show statistically significant differences.
The presence of smell alterations was also assessed. Most patients with anosmia/hyposmia (13) were from group I. Only two patients in group II had this alteration. However, these results showed no statistically significant differences.
All patients were assessed postoperatively on days seven, 30, and 90.
On the seventh day after the surgery, patients were assessed in relation to breathing. There were no statistically significant differences between groups (p = 0.079). The prevalence was higher at grades II, III, and IV (Figure 5). Improvement was not expected in all patients at this phase, due to swelling and presence of crusts, but many patients already mentioned improvement.
On the 30th day after surgery, the degree of improvement in breathing was evaluated again and there were still no statistically significant differences between groups (p = 0.271), as shown in Figure 6. Most patients reported improvements at grades IV and V.
On the 90th day, the degree of improvement in breathing was reassessed (Figure 7). This evaluation showed considerable improvement of results, as usually there are no more crusts and edema. 12 There were no statistically significant differences between the groups (p = 0.808).
Regarding the improvement in the smell alteration symptom, all patients showed improvement after the operation. Only two patients in group I showed mild improvement, whereas all others achieved complete improvement (Figure 8). There were no statistically significant differences (p = 1.000 - Fisher's exact test).
Regarding the facial pressure variable, most patients achieved complete improvement with surgery. Only one patient did not achieve any improvement, as shown in Figure 9. There were no statistically significant differences (p = 1.000 - Fisher's exact test).
Conclusion
The incidence of rhinitis in adults from the allergy group of the Department of Otorhinolaryngology of Saraswathi Institute of Medical Sciences, Hapur was 56% for allergic rhinitis and 44% of nonallergic rhinitis. This study only enrolled patients with nasal obstruction. Thus, the incidence of rhinitis in patients with nasal obstruction was much higher. Of the 57 patients, 39 (68.4%) had allergic rhinitis and 18 (31.58%) did not.
This study also showed an improvement in snoring. Of the 38 patients who snored, 24 (63.16%) reported complete improvement three months after surgery. It is noteworthy that of the 39 patients in group I, 29 (74.4%) snored.
Facial pressure also showed significant improvement in this study, as of the 22 patients who reported this symptom, 21 (95.5%) showed total improvement, and only one individual (4.55%) from the group with allergic rhinitis showed none. There were no statistical differences between the groups; however, most of them showed improvement. There are no studies on this parameter.
The only finding with statistically significant differences in the preoperative period was the measurement of IgE in vitro, in which 29 patients (74.4%) had a positive result in the group with allergic rhinitis and ten (25.6%) did not. In the group without rhinitis, the test was positive in two cases (11.1%). IgE measurement determines that the patient has an allergy, but not necessarily allergic rhinitis.
Patients in group I had a longer duration of surgery (p = 0.001) and higher transoperative bleeding (p < 0.001). One factor could have been the result of the other, considering that when bleeding is higher, the operating time will be longer. This may be important for the scheduling of these surgical patients.
Regarding improvement in breathing, at seven days postoperatively, 40 patients (70.18%) were already in the group with improved grade III, IV, and V. At 30 days, 47 patients (82.5%) reported grades IV and V of improvement, and after three months, this number increased to 54 patients (94.73%). This is consistent with the evolution in the first weeks postoperatively, when edema and crusts may obstruct breathing.
Discussion
Patients with obstructive symptoms who did not achieve any improvement with clinical therapy may benefit from surgical treatment.9, 13, 14, 15 Even today, clinical experience shows that the success of the nasal functional operation depends, in many cases, on how the surgeon approaches the nasal turbinates.15, 16 There are several techniques to reduce the turbinates, and according to Mabry et al., the surgeon must know all the available techniques and use them in each case, as required.16
According to the authors' literature review, the most widely used current procedures are lateral fracture, electrocautery, partial turbinectomy turbinoplasty, and resection with microdebrider. Patients submitted to lower turbinoplasty in the present study had inferior turbinate hypertrophy as the only finding. None of the cases had concomitant septal deviation or another finding, which made it possible for this study to assess the impact of surgery exclusively on the inferior turbinate. None of the postoperative parameters assessed between groups I and II showed statistically significant differences, but all parameters showed improvement in both groups.
Ophir et al. assessed 186 patients at 10-15 years after they had been submitted to inferior turbinate surgery and observed that 88% of patients showed nasal obstruction improvement.17 The present study showed similar findings. On the 90th postoperative day, 21 of the 57 patients (36.8%) reported grade IV improvement in breathing, and 33 (57.9%), grade V. Together, 56 (94.7%) of the patients had good improvement in breathing, either grades IV or V. Other rhinitis symptoms than nasal obstruction also show the effect of the nasal surgery. The benefits of surgery on the inferior turbinate are not limited to improvement in nasal obstruction and encompass other rhinitis symptoms, mainly in relation to sneezing. 10 The present study demonstrated similar findings, as more than 85% of patients who usually had itching, sneezing, and rhinorrhea achieved moderate or complete recovery three months after the surgery. The main objective of inferior turbinate surgery is to allow better circulation of air through the nasal passages. However, as turbinoplasty involves partial turbinate resection, and thus necessarily reduces nasal mucosa surface exposed to the action of allergens and other stimuli, as well as reducing the amount of glandular tissue in this region, this might explain the improvement in other rhinitis symptoms observed in this study. These results demonstrate that the benefits gained from lower turbinoplasty are not limited to nasal obstruction, and patients also can expect improvement in other rhinitis symptoms.
Allergic rhinitis is closely related to sleep disorders, and physicians should be aware of this fact, as it represents an unexplored area. 18 In 2008, Montovani et al. found that sleep disorders were very common in patients with allergic rhinitis (over 90%), 19 which is in accordance with the findings of the present study.
None of the preoperative symptoms showed statistically significant differences between patients with and without allergic rhinitis.
There are no studies comparing the degree of anosmia improvement with the turbinate operation, but a few studies have reported that the prevalence of anosmia in allergic patients is high. In 2008, Haro et al. emphasized that smell alterations are common in patients with allergic rhinitis. 20 Olfaction should be investigated in patients with allergic rhinitis through clinical trials, due to the high prevalence of alterations. 21 Higo et al. investigated smell alterations in patients with allergic rhinitis and speculated that rhinitis causes alterations in the olfactory mucosa, resulting in olfactory transduction impairment. 22 In the present study, smell alterations in group I were found in 33.3% of individuals (13 patients), and in group II, 11.1% (two patients). Three months postoperatively, only two patients did not achieve overall symptom improvement, with no difference between the two groups.
