田家旺 李永奇
【摘要】目的 探討耳硬化癥患者鐙骨底板開窗+人工鐙骨植入術(shù)后耳鳴改變情況和術(shù)后耳鳴療效的影響因素。方法 分析行鐙骨底板開窗+人工鐙骨植入術(shù)的耳硬化癥伴耳鳴癥狀的54例患者(65耳)的術(shù)前及術(shù)后1個(gè)月、術(shù)后6個(gè)月聽力檢查結(jié)果,包括術(shù)前耳鳴殘疾量表(THI)、術(shù)后1個(gè)月、術(shù)后6個(gè)月THI和臨床總體印象量表(CGI-S)評(píng)分并進(jìn)行比較。結(jié)果 術(shù)前低頻(<1 kHz)耳鳴共31耳(47.7%),中頻(1~4 kHz)14耳(21.5%),高頻(≥4 kHz)20耳(30.8%)。術(shù)后1個(gè)月48耳(73.8%)耳鳴改善(耳鳴完全消失及耳鳴減輕),16耳(24.6%)耳鳴無變化,1耳(1.5%)耳鳴較術(shù)前加重;術(shù)后6個(gè)月50耳(76.9%)耳鳴改善,13耳(20.0%)耳鳴無變化,1耳(1.5%)耳鳴較術(shù)前加重。低頻耳鳴、中頻耳鳴組的術(shù)后耳鳴改善效果較高頻耳鳴組更好(P < 0.001和P = 0.013)。術(shù)后1個(gè)月主觀耳鳴變化情況如氣導(dǎo)、骨導(dǎo)閾值變化與術(shù)前比較差異均有統(tǒng)計(jì)學(xué)意義(P均< 0.001),但氣骨導(dǎo)差比較差異無統(tǒng)計(jì)學(xué)意義(P > 0.05)。結(jié)論 耳硬化癥患者行鐙骨底板開窗+人工鐙骨植入術(shù)不僅可以明顯改善聽力水平,同時(shí)也能較好地改善大多數(shù)患者的耳鳴癥狀,術(shù)前低、中頻耳鳴患者較高頻耳鳴患者耳鳴改善更明顯。
【關(guān)鍵詞】耳硬化癥;耳鳴;治療效果;鐙骨開窗術(shù)
Clinical efficacy and influencing factors of stapedotomy combined with artificial stapes implantation for tinnitus in patients with otosclerosis Tian Jiawang, Li Yongqi. Department of Otorhinolaryngology Head and Neck Surgery, the Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, China
Corresponding author,Li Yongqi, E-mail: liyongqi@mail.sysu.edu.cn
【Abstract】Objective To analyze the changes in tinnitus after stapedotomy combined with artificial stapes implantation, and further explore the factors influencing the efficacy of postoperative tinnitus in patients with otosclerosis. Methods A total of 54 patients (65 ears) with otosclerosis complicated with tinnitus symptoms who underwent stapedotomy combined with artificial stapes implantation were enrolled.? The hearing test results of all patients before surgery, 1 and 6 months after surgery were recorded. The scores of Tinnitus Handicap Inventory (THI) and Clinical Global Impression Scale (CGI-S) before surgery, 1 and 6 months after surgery were compared. Results Before surgery, low-frequency (<1 kHz) tinnitus was observed in 31 ears (47.7%), medium-frequency (1-4 kHz) tinnitus in 14 ears (21.5%), and high-frequency (≥4 kHz) tinnitus in 20 ears (30.8%). At 1 month after surgery, tinnitus symptom was alleviated
in 48 ears (73.8%) (complete healing and mitigation of tinnitus), no changes in 16 ears (24.6%), and tinnitus symptom was aggravated in 1 ear (1.5%). At 6 months after surgery, tinnitus symptom was eased in 50 ears (76.9%), no changes in 13 ears (20.0%), and tinnitus symptom was aggravated in 1 ear (1.5%). Patients with low- and medium-frequency tinnitus obtained more significant improvement in tinnitus compared with their counterparts with high-frequency tinnitus (P < 0.001 and P = 0.013). At postoperative 1 month, the changes in subjective tinnitus, such as the average air conduction and bone conduction thresholds significantly differed from those before surgery (all P < 0.001), whereas there was no statistical significance in air-bone gap (P > 0.05). Conclusions Stapedotomy combined with artificial stapes implantation can not only restore the hearing of patients with otosclerosis, but also mitigate the tinnitus symptoms? in most patients. Patients with low- and medium-frequency tinnitus before surgery can obtain more significant improvements in tinnitus after surgery than those with high-frequency tinnitus.
【Key words】Otosclerosis; Tinnitus; Efficacy; Stapedotomy
耳硬化癥是一種內(nèi)耳骨迷路病變,密質(zhì)骨發(fā)生反復(fù)的局灶性吸收并被富含血管和細(xì)胞的海綿狀新骨所替代,隨著血管減少、骨質(zhì)沉著,形成骨質(zhì)硬化病灶而產(chǎn)生的疾?。?]。耳硬化癥是鼓膜完整的傳導(dǎo)性聽力損失的主要原因,是一種多因素疾病,其中基因遺傳、自身免疫性疾病和激素因素被認(rèn)為是發(fā)生臨床耳硬化的影響因素[2]。耳硬化癥臨床癥狀包括進(jìn)行性聽力下降和耳鳴,文獻(xiàn)報(bào)道耳硬化癥患者中主觀性耳鳴的發(fā)生率約為65.0%~87.1%[3-6],而部分患者的首要主訴是耳鳴,耳鳴對(duì)患者的日常生活和工作影響大。針對(duì)耳硬化癥患者的漸進(jìn)性聽力下降,鐙骨手術(shù)是主要的治療方法,有研究結(jié)果顯示耳硬化癥患者術(shù)后聽力改善率為75.0%~96.5%[7-8],耳硬化癥患者鐙骨手術(shù)后聽力改善效果好,但較少有研究關(guān)注鐙骨切除術(shù)后耳鳴的轉(zhuǎn)歸情況。隨著人們對(duì)生活質(zhì)量的要求越來越高,臨床上更多患者期望鐙骨手術(shù)不僅能改善聽力,同時(shí)還能改善耳鳴[9]。但耳硬化癥患者發(fā)生耳鳴的具體機(jī)制目前尚不清楚,影響耳硬化癥術(shù)后耳鳴療效的因素較多,有些尚存在爭(zhēng)議。本研究探討耳硬化癥患者鐙骨底板開窗+人工鐙骨植入術(shù)后耳鳴療效及可能的影響因素。
對(duì)象與方法
一、研究對(duì)象
將2016年1月至2023年4月共68例確診為耳硬化癥并在我院行手術(shù)治療的患者的臨床資料行自對(duì)照研究。68例耳硬化癥患者,伴有耳鳴癥狀的54例患者(65耳)被納入研究,其中女33例、男21例,年齡為45(26~78)歲。該研究獲得了醫(yī)院倫理委員會(huì)的批準(zhǔn)(批件號(hào):[2021]02-383-01),所有患者均簽署知情同意書。
二、研究方法
依據(jù)美國(guó)耳鼻咽喉頭頸外科學(xué)會(huì)聽力委員會(huì)發(fā)布的指南,患者術(shù)前行純音聽閾檢查(PTA),并計(jì)算500 Hz及1、2、4 kHz的氣導(dǎo)(AC)、骨導(dǎo)(BC)和氣骨導(dǎo)差(ABG)。術(shù)前采用耳鳴匹配評(píng)估患者耳鳴頻率,所有患者填寫耳鳴殘疾量表(THI)評(píng)分。
所有患者均為全身麻醉手術(shù),術(shù)式為經(jīng)顯微鏡下患耳鐙骨底板開窗+人工鐙骨植入術(shù)。人工聽骨的材料均為鈦聽骨。手術(shù)均由同一耳科專家完成。術(shù)后常規(guī)靜脈滴注抗菌素預(yù)防感染1~3 d,術(shù)后3 d左右出院。
術(shù)后1個(gè)月、6個(gè)月所有患者行PTA復(fù)查聽力水平,填寫臨床總體印象量表(CGI-S),調(diào)查患者術(shù)后耳鳴的主觀感知變化情況,并將結(jié)果分為耳鳴完全消失、耳鳴減輕 、耳鳴無變化、耳鳴加重,耳鳴改善為耳鳴完全消失及耳鳴減輕,無改善為耳鳴無變化或加重。
三、統(tǒng)計(jì)學(xué)處理
采用SPSS 25.0軟件對(duì)數(shù)據(jù)進(jìn)行統(tǒng)計(jì)學(xué)分析。非正態(tài)分布計(jì)量資料以M(P25,P75)表示,比較采用符號(hào)秩和檢驗(yàn),計(jì)數(shù)資料組間比較采用Fisher確切概率法。通過Pearson分析來評(píng)估聽力改善和THI評(píng)分的變化之間是否存在關(guān)系。P < 0.05為差異有統(tǒng)計(jì)學(xué)意義。
結(jié)果
一、術(shù)后耳鳴改善情況
54例(65耳)術(shù)前伴有耳鳴患者中低頻
(<1 kHz)耳鳴31耳(47.7%),中頻(1?4 kHz)14耳(21.5%),高頻(≥4 kHz)20耳(30.8%)。術(shù)后1個(gè)月48耳(73.8%)耳鳴改善,16耳(24.6%)耳鳴無變化,1耳(1.5%)耳鳴較術(shù)前加重;術(shù)后6個(gè)月50耳(76.9%)耳鳴改善,13耳(20.0%)耳鳴無變化,1耳(1.5%)耳鳴較術(shù)前加重。術(shù)后1個(gè)月THI為0(0,29)分及術(shù)后6個(gè)月THI為0(0,22)分,與術(shù)前的THI為36(25,50)分比較差異均有統(tǒng)計(jì)學(xué)意義(P 均< 0.001),而術(shù)后1個(gè)月和術(shù)后6個(gè)月THI評(píng)分比較差異無統(tǒng)計(jì)學(xué)意義(P = 0.380),見圖1。因此下一步將重點(diǎn)分析術(shù)前和術(shù)后1個(gè)月耳鳴嚴(yán)重程度的變化。
術(shù)后1個(gè)月低頻耳鳴組31耳中28耳耳鳴改善,3耳耳鳴無改善;中頻耳鳴組14耳中12耳耳鳴改善,2耳耳鳴無改善;高頻耳鳴組20耳中8耳耳鳴改善,12耳耳鳴無改善。使用Fisher確切概率法分析不同耳鳴頻率組的術(shù)后1個(gè)月耳鳴變化相關(guān)性,差異有統(tǒng)計(jì)學(xué)意義(P < 0.001),低頻耳鳴、中頻耳鳴組的術(shù)后耳鳴改善效果較高頻耳鳴組更好(P = 0.013)。而低頻、中頻耳鳴組的改善差異無統(tǒng)計(jì)學(xué)意義(P = 0.639)。
二、術(shù)后聽力改善情況
65耳術(shù)前、術(shù)后1個(gè)月和術(shù)后6個(gè)月AC閾值分別為62.50(54.38,71.25)dB HL、40.00(29.38,53.12)dB HL和35.00(21.88,47.50)dB HL,
500 Hz及1、2、4 kHz各頻率術(shù)后AC閾值均低于術(shù)前,差異均有無統(tǒng)計(jì)學(xué)意義(P < 0.001)。術(shù)前、術(shù)后1個(gè)月和術(shù)后6個(gè)月BC閾值分別為31.25 (22.50,42.25)dB HL、22.50(17.50,38.75)dB HL和23.75(15.00,35.62)dB HL,差異有統(tǒng)計(jì)學(xué)意義(P = 0.032,P = 0.003)。術(shù)前、術(shù)后1個(gè)月和術(shù)后6個(gè)月ABG值分別為31.25(26.25,36.88)dB HL、12.50(8.75,19.38)dB HL和10.00(6.25,17.50)dB HL,各頻率ABG值均縮小,差異有統(tǒng)計(jì)學(xué)意義(P < 0.001)。
三、聽力改善與耳鳴改善關(guān)系
Pearson相關(guān)分析顯示,術(shù)前和術(shù)后1個(gè)月AC閾值的變化與術(shù)后1個(gè)月THI評(píng)分的變化之間存在相關(guān)性(r = 0.297,P = 0.016);術(shù)后1個(gè)月BC閾值的變化與THI評(píng)分的變化之間存在相關(guān)性(r =
0.380,P = 0.002)。見圖2。
術(shù)后1個(gè)月主觀耳鳴變化情況與AC閾值變化比較差異有統(tǒng)計(jì)學(xué)意義(P < 0.001),與術(shù)后1個(gè)月BC閾值變化比較差異亦有統(tǒng)計(jì)學(xué)意義(P < 0.001),但和術(shù)后1個(gè)月ABG值變化比較差異無統(tǒng)計(jì)學(xué)意義(P > 0.05)。見圖3。
四、不同人工鐙骨直徑與耳鳴改善關(guān)系
本研究65耳中57耳術(shù)中植入0.5 mm的人工鐙骨,8耳植入人工鐙骨直徑為0.4 mm。植入直徑0.5 mm的人工鐙骨的57耳,術(shù)后有44耳耳鳴改善,13耳耳鳴無改善。植入直徑0.4 mm的人工鐙骨的8耳,術(shù)后有4耳耳鳴改善,4耳耳鳴無改善。植入人工鐙骨直徑與術(shù)后主觀耳鳴情況改善比較差異無統(tǒng)計(jì)學(xué)意義(P = 0.641)。
討論
1956年Shea[10]首次實(shí)施耳硬化癥患者的鐙骨手術(shù),術(shù)后患者聽力明顯改善。此后鐙骨手術(shù)的術(shù)式不斷改良和完善,目前鐙骨底板開窗+人工鐙骨植入術(shù)為耳硬化癥的主流手術(shù),術(shù)后大部分患者聽力能明顯改善[11-12]。
不過既往的研究重點(diǎn)關(guān)注耳硬化癥患者鐙骨手術(shù)后的聽力改善情況,而對(duì)于耳硬化癥患者耳鳴的治療研究很少。耳鳴也是耳硬化癥的主要癥狀,嚴(yán)重的耳鳴常常影響和降低患者的生活質(zhì)量,并可能引起患者嚴(yán)重的心理負(fù)擔(dān)。耳硬化癥患者主觀耳鳴的產(chǎn)生機(jī)制目前尚不明確。Szymański等[13]認(rèn)為耳硬化癥患者內(nèi)耳液振動(dòng)減少,耳蝸血管內(nèi)紅細(xì)胞血管內(nèi)凝集可能引起耳鳴,Ismi等[5]認(rèn)為耳硬化灶產(chǎn)生的有毒代謝物可能是耳硬化癥患者發(fā)生耳鳴的可能機(jī)制。
耳硬化癥鐙骨手術(shù)后耳鳴可獲得不同程度的緩解,本研究入組患者術(shù)后1個(gè)月耳鳴改善率為73.8%,與既往研究報(bào)道的術(shù)后耳鳴改善情況相近。在既往的報(bào)道中,術(shù)后耳鳴無變化的概率為39.3%[5]。而在我們的研究中,術(shù)后1個(gè)月16耳(24.6%)耳鳴無變化。術(shù)后耳鳴的加重并不常見,本研究只有1耳(1.5%)術(shù)后出現(xiàn)耳鳴加重,與Wedel等[7]報(bào)道的術(shù)后耳鳴加重率(4.8%)類似。
本研究中,耳硬化癥患者術(shù)后AC閾值、BC閾值均降低,且術(shù)后1個(gè)月BC閾值的變化與術(shù)后1月THI評(píng)分的變化存在相關(guān)性。本研究中術(shù)后ABG值的變化與耳鳴改善情況比較差異無統(tǒng)計(jì)學(xué)意義,這與Ismi等[5]的研究結(jié)果一致,提示術(shù)后ABG值的變化對(duì)耳鳴改善無影響。而術(shù)后感音神經(jīng)性聽力下降是鐙骨手術(shù)術(shù)后的并發(fā)癥之一,發(fā)生率較低[1]。本研究中有1例患者術(shù)后1月、術(shù)后6月BC閾值升高均>10 dB,其原因可能與術(shù)中鐙骨底板開窗操作過程中內(nèi)耳損傷或耳硬化病灶處于活動(dòng)期有關(guān)。
本研究發(fā)現(xiàn)術(shù)前低、中頻耳鳴患者較高頻耳鳴患者耳鳴改善更明顯,低、中頻耳鳴更有可能在手術(shù)后得到解決。Sakai等[14]和Ramsay等[15]認(rèn)為,低頻耳鳴預(yù)后良好,中頻耳鳴術(shù)后可能保持不變,高頻耳鳴預(yù)后較差。低頻耳鳴可能與內(nèi)耳體液振動(dòng)不良有關(guān)。但Ayache等[16]發(fā)現(xiàn)低頻耳鳴與高頻耳鳴患者術(shù)后的恢復(fù)之間沒有統(tǒng)計(jì)學(xué)差異。鐙骨固定時(shí)會(huì)減少內(nèi)淋巴液體振動(dòng),并且對(duì)低頻聲音的影響比高頻聲音更明顯,意味著到達(dá)聽覺皮層的神經(jīng)沖動(dòng)更少,特別是那些與低頻有關(guān)的神經(jīng)沖動(dòng)[17]。因此,當(dāng)聽覺刺激減少時(shí),中樞神經(jīng)系統(tǒng)通過增加外毛細(xì)胞的敏感性來進(jìn)行補(bǔ)償,從而產(chǎn)生耳鳴[18]。鐙骨切開術(shù)可改善內(nèi)淋巴液體振動(dòng),從而抑制這些傳入刺激,其可能是手術(shù)改善低頻耳鳴的機(jī)制,而高頻耳鳴與耳蝸受損有關(guān)[19],因此手術(shù)對(duì)其改善的效果較小。
有研究表明耳硬化癥患者術(shù)后卡哈切跡可消失[20],卡哈切跡最早由Carhart提出,卡哈切跡的產(chǎn)生被認(rèn)為與鐙骨底板固定有關(guān)[21]。聲波通過顱骨傳遞到內(nèi)淋巴液進(jìn)而引起耳蝸基底膜的振動(dòng)是骨傳導(dǎo)產(chǎn)生的主要機(jī)制。除此之外,聲波通過顱骨產(chǎn)生振動(dòng)時(shí),聽骨鏈由于慣性作用發(fā)生振動(dòng),鐙骨底板在卵圓窗處發(fā)生位移運(yùn)動(dòng)也是骨傳導(dǎo)產(chǎn)生的機(jī)制之一。術(shù)后鐙骨底板的固定得到改善,骨傳導(dǎo)閾值降低, 卡哈切跡消失。而耳鳴的頻率通常與聽力損失頻率相關(guān)。耳蝸輸入信號(hào)的損失會(huì)導(dǎo)致中樞通路中聽力損失頻率的重組和過度信號(hào)傳導(dǎo)[22]。因此,耳鳴的頻率接近或處于聽力損失頻率范圍內(nèi)[23]。聽力恢復(fù)后耳鳴的緩解可能是聽覺皮層高度敏感性恢復(fù)的結(jié)果。
有研究發(fā)現(xiàn)在一定范圍內(nèi),術(shù)中鐙骨底板開窗面積越大,所選用的人工鐙骨的直徑越大,術(shù)后聽力改善越明顯[12, 24]。然而我們發(fā)現(xiàn)患者研究發(fā)現(xiàn)植入0.4 mm或0.5 mm人工鐙骨直徑與術(shù)后主觀耳鳴改善情況結(jié)果無統(tǒng)計(jì)學(xué)意義。這可能與我們的樣本量較少有關(guān)。本研究具有一定的局限性:入組患者樣本量較小,亞洲人群耳硬化癥發(fā)病率較歐美人群發(fā)病率低;其次是術(shù)后隨訪時(shí)間相對(duì)較短,還有部分患者由于交通不便或者術(shù)耳聽力改善后無特殊不適而不愿意復(fù)診導(dǎo)致隨訪率降低。
綜上所述,耳硬化癥患者行鐙骨底板開窗+人工鐙骨植入術(shù)不僅可以恢復(fù)耳硬化癥患者的聽力,而且可改善大多數(shù)患者的耳鳴癥狀,術(shù)前低、中頻耳鳴患者較高頻耳鳴患者耳鳴改善更明顯。
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(收稿日期:2023-11-23)
(本文編輯:楊江瑜)