Y HQC VlgT NAM THANG 3 - SO 2/2013
D A N H GIA TiNH TRANG N H A N THllC VA THUC HANH BAO QUAN, SUT DUNG HOA CHAT BAO VE THOC VAT CUA NGUOI NONG D A N
TAI XA ViNH LONG, HUYEN VINH LOC. THANH HdA
T 6 M TAT
M I I C tieu: Danh gia ve nh$n thCfc va thirc h^nh si!f dyng. bao quan hoa chit bao ve thuc vSt {HCBVTV) cda ngUdi nong d§n tai 2 xa'VTnh Long va VTnh Quang, huyen VTnh Lflc. Thanh Hoa. Doi tirong va phu'cfng phap nghien cijru: can thiep so sanh tnrdc sau co doi chiirig, bao gom 612 ngUdi bao quan v^ sCf dung HCBVTV cCia 2 xa Vinh Long va VTnh Quang, huySn Hau Loc. Thanh Hda tCr thang 3/2011 den thang 3/2012. Ket qua va ban luan: So ngudi dan dupc tap huan ve si!f dung an toan HCBVTV tang 26,2%, d xa doi chOng tSng 6,5%; HQ=27,7%. So ngUdi co kien thOc trung binh ve bao quan an toan HCBVTV tang 54,1%; 6 xa doi chijfng tang 14,9%, HQ=775,0%. Nhijfng ngUdi co y thijfc rat kem ve bao quan an toan HCBVTV da giam 29,0%; cl xa doi chijfng giam 3,5%. HQ=71,1%. Ty le ngudl nhan biet dUdc mau sac chl thi do doc hai tren bao bi san pham HCBVTV tSng 74,9%;" d xa doi chifng tSng 11,6%, HQ=332,5%. T j le ngUdi c6 ki^'n thOt ve pha che HCBVTV theo dCing chi d i n tang 31,1%: Cl xa doi chifng tSng 4 , 1 % , HQ=43,2%.
Thifc hanh pha che diing quy djnh tang 33,9%; ci xa doi chifng tang 8,4%, HQ=46,08%. Ty le ngudi dem chon lap bao bi dyng HCBVTV sau khi phun thuoc tang 42,2%, 6 xa doi chiJfng tang 1,2%, HQ=168,9%. Vilt bo bao bi khong dung ndi quy dinh giam 30,4%; d xa d6i chiftig giam 7,9%, HQ=44,7%.
Ty le gta dinh c6 eft giu", bao quan HCBVTV trong nha giam 13,9%; d xa doi chiifng giam 11,1%, HQ=17,4%. Ket luan: Sau khi dUOc hudng d i n (sau can thiep) tJ I& nhSn thtJfc va thifc hanh diing ciia ngudi nong dan tai 2 xa VTnh Long va VTnh Quang, huyen VTnh Loc, tinh Thanh Hoa tang len, dieu nay CO >? nghTa thong ke trong thyc hanh sCf dung va bao quan HCBVTV.
SUMMARY
EVALUATION ON THE PESCEPTION, USAGE AND PRESERVATION OF PEOPLE USED CHEMICAL PLANT PROTECTION IN VINH LONG, VINH LOC,
THANH HOA PROVINCE
Objectives: To assess the perception, usage and the preservation of people used chemical plant protection in Vinh Long and Vinh Quang village, Vinh
* B$nh vidn Bach Mai
Phan bl^n ichoa hgc: PGS.TS. Doan Mai Phu-cyng
Tr^n Thj Ki§m*
Loc district, Thanh Hoa province. Study methods:
Slide description with and without intervention and comparison before and after, include 612 people directly used and reserved the chemical plant protection in Vinh Long village and Vinh Quang village, Vinh Loc district, Thanh Hoa province from 3/2011 to 3/2012. Result and discussion: Number of people is trained about using chemical plant protection safety increase 26.2%, at the village was compared increase 6.5%; effect 27.7%. Number of people has average knowledge of chemical plant protection's preservation increase 54.1%, at the village was compared increase 14.9%, HQ=775.0%. Number of people has poor consciousness decrease 29.0%, at the village was compared decrease 3.5%, effect 71.1%. The proportion of people identify the toxic directive color on the package of chemical plant protections increase 74.9%; at the village was compared increase 11.6%, effect 332.5%. The propotion of people has knowledge of process the chemical plant protection follow the instruction increase 31.1%; at the village was compared increase 4.1 %; effect 43.2% and process the chemical plant protection follow the regulations increase 33.9%, at the compared village increase 8.4%; effect 46,08%. The propotion of people bury the package after use increase 42.2%; at the compared village increase 1.2%; effect 168.9% and thow away the packages everywhere decrease 30.4%;
at the compared village decrease 7.9%; effect 44.7%.
The propotion of people preserve chemical plant protection in the house decrease 13.9%; at the compared village decrease 11.1%; effect 17.4%.
Conclusion: After guided, the propotion of perception and practice nght of people in Vinh Long and Vinh Quang village, Vinh Loc district, Thanh Hoa province increase statistically significant in usage and preservation chemical plant protection.
I.
OAT VAN OEViec SLf dung hoa chat bao ve thiic vat tr^n lan, khong dung da gay anh hifdng rat I6n den sCrc khoe con ngudi. Hien tu'ong ngo doc cap do hoa chat bao ve thifc vat nhiJng nam gan day cung tang cao. Mpt trong nhChig nguyen nhan chu yeu dan den tinh trang tren la do ngu'di sCr dung it hieu biet tac hai cua
Y HQC VlgT NAM THANG 3 - S6" 2/2013
HCBVTV doi vcfi moi tru'dng va sure khoe, han
che ve nhan thu'c va thy'c hanh sai lech trong bao quan, sir dyng HCBVTV an toan, hi$u qu^
nha: sCf dung cac loai hoa chat cam, khong sCr dung bao ho lao dong khi pha ch§', phun hda chat khong dung ky thuat, lieu IUdng va chCing loai. Xuat phat tCr y§u cau bao v$ su'c khoe ngudi dan trong thdi ky cong nghiep hoa-hien dai hda nong thon, dSc biet 1^ bao ve sire khoe clio ngudi sCf dung HCBVTV, chung toi nghi§n CLfu de t^i "Oanh gia ve nhan thCrc v^ thuc hanh bao quan v^ sCf dung iida chS't bao ve thuc vat cCia ngudi ndng dSn tai xa VTnh Long, huyen VTnh Loc, tinh Thanh Hda nSm 2011" vdi cac muc ti6u:
1. Danh gia v4 nhan thOc ct3a ngu&i siTdung
hoa chi't bao v$ thuc v$t tai xa Vinh Long, huy§n Vinh Ldc. tinh Thanh Hoa nSm 2011.
2. Danh gid thi/c hdnh bio quan vd sCI dung hoa ciiat bao v$ tfiuc v$t cda ngudi sCt dung tai xa Vinh Long, liuy§n Vtnh Ldc, tinh Thanh Hoa.
II. PHl/dNG PHAP NGHtEN COU
Can thiep so sanh trudc, sau c6 do!
chCfng. Gom 612 ngudi true tiep tiep xuc, stir dung, bao quan HCBVTV tU thang 3/2011 den thang 3/2012 tai 2 xa VTnh Long va VTnh Quang, huyen VTnh Loc, Thanh Hda.
- Xti'/y so Ueu. chUdng trinh EPI-INFO va SPSS 13.0.
III. KET QuA NGHIEN COU
3.1. Danh gia nhan thurc cua ngudi nong dan ve SIJT dung, bao quan hoa chat bao ve thiic vat trUdc va sau can thiep
Bang 1. Ty le ngUdi dan duoc tap hua'n, iiudng din sir dung an toan HCBVTV
Dja ban nghien curuxa VTnh Long (n = 310) xa VTnh Quang
(n = 302)
TCT n 228 246
(%)
73,5 81,5
SCT n 309 267
(%)
99,7 88,0
HQ (%)
27,7 P
<0,05
<0,05 B a n q 2. T9 le cac dd'i tL/dnq c6 kien Xhiic diinq ve bao
Ke dl/dc dung cac piiirdng pliap bao quan HCBVTV Ke dunq 8-10 phi/dng phap Ke dung 5-7 phuong phap Ke dOng 3-4 phuong phap Ke dunq 1-2 phuong phap Khong ke dung phuong phap nao
Tdng so (%)
Phan loai Tot Kha Trung
binh Kem Rai kem
xa VTnh Long (n = 310) TCT(%)
0.0 0,5 5,5
SCT (%) 0,0 6,4 59,6 59,6 1 28,6 34,4 100
5,4 100
quan H C B V T V xaVTnh Quang (n
= 302) TCT(%)
0,0 0,0 8.1 65,4 26,5 100
SCT (%) 0,0 1,6 25,0 50,4 23,0 100
HQ(%)
775 29,1 71,1
P
>0,05
<0,01
<0,05
3.2. Oanh gia thtrc hanh cua doi tuong ve suf dung, bao quan hoa chat bao ve thUc vat tnrdc va sau can thiep
Bang 3. Tj' l j cac hp gia dinti sijfdung binh piiun HCBVTV bi ro r?
Dja ban nghien CLfu xa VTnh Long xa VTnh Quang
sijfdung binh phun Bl rd ri Khong bi ro ri Bi ro ri Khong bi ro rl
Trirdc can thiep n 95 215 107 195
30,6
(%)
69,4 35,4 64,6
Sau can thiep n 47 263 79 223
15,2
(%)
84,8 26,3 73,7
HQ (%)
25,7 P
<0,05
<0,05
Y HQC VlgT NAM THANG 3 - SO 2/2013
. Bang 4. T^ ie ngudi xOf i« bao bl dunq hoa chat sau khi ohun HCBVTV
Noi dung xuf ly sau phun HCBVTV Gom l^i rdi b^n
Tan dung iam chai io dunq Vdt bo ngay ndi phun thudc
Dem chdn iap VCrt bira bai khdng theo ndi
quy dmh P
xa VTnh Long (n = 310) TCT (%)
3,9 0,0 28,0 24,2 43,9
SCT ("A) 1,0 0,3 18,8 66,4 13,5
<0,05
xa VTnh Quang (n = 302) TCT(%)
0,3 0,3 45,0 22,2 32,2
SCT (%) 2,0 0,0 50,3 23,4 24,3
>0,05
HQ(%) - 492,25 -100
21,1 168,9 44,7 Bang 5. Tj' le doi tUdng ri!ra binh phun d cac noi sau khi phun HCBVTV
Noi rura binh phun IVlUdng Ruong Ao hd Gieng
xa VTnh Long TCT n 247 128 4 0
79,8
(%)
41.3 1.3 0
SCT n 278 146 3 0
89,8
(%)
47.0 0,9 0
xa VTnh Quang TCT
n 230 129 4 0
76,1
(%)
42,7 1,2
0 SCT n 223 154 3 0
77,3
(%)
51,0 1,0 0
HQ (%) 11,5 5,6 14,1
0 P
>0,05
IV. BAN LUAN
1. Oanh gia ve nhan thiJc cila ngudi nong dan ve siif dyng, bao quan hda chat bao ve thuc vat trudc, sau khi hudng dan (sau can thiep): ngudi dan xa \^nh Long va VTnh Quang duoc hudng din sijf dung an toan HCBVTV, theo ket qua dieu tra trudc can thiep (TCT) trong so ntiiJng ngUdi dUpc tham gia phong van thi cd 73,5% d xa VTnh Long va 81,5% 6 xa VTnh Quang da tCfng dUdc nghe hudng dan ve SLf dung va bao quan HCBVTV, chi!i yeu ho duoc nghe qua ngUdi ban hang va xem thdng tin ghi tren nhan mac bao bi. Hieu biet va nhan thCfc ve sCf dung, bao quan HCBVTV trong nghien cuu nay tUdng dUdng vdi nghien CLTU cOa cac tac gia: Nguyin Duy Bao (1995) cho biet ngudi dan lam ndng nghiep chi3 yeu sCf dung va pha ch^ theo kinh nghiem ci^a ban than (tu 82% den 98%)[2]; Vu Y t^ du phdng - Bo Y te (2000) cho biet ngUdi lam ndng nghiep 6 8 tinh trpng diem dai dien cho Bac, Trung, Nam tu doc nhan hoa chat vdi t^ Id 34%, so khdrig dUdc hudng din chiem t^ Id cao 55,5%
[1], Sau can thidp (SCT) t^ le ngUdi phun hoa chat 6 xa N^nh Long nhan biet v^ hieu hudng din sir dung an toan HCBVTV t5ng so vdi thdi diem trUd'c can thiep {tii 73,5% Ien 99,7%); su khac biet cd ^ nghTa thong ke vdi p<0,05. Sau can thiep, t^ Id ngudi phun HCBVTV xa VTnh Quang cung tang so vdi thdi diem TCT (tU 81,5 len 88,0%), sU khac biet cd :? nghTa thong ke
vdi p<0,05. Ngudi phun HCBVTV sau can thiep b VTnh Lpng nhan biet va hieu hUdng dan sii dung an toan HCBVTV tang hdn xa VTnh Quang (26,2% so vdi 6,5%), HQ=27,7%.
Ket qua tai Bang 1 cho thay, b ca dja ban
hai xa khdng ai cd kien thUc to't ve bao quan an
toan HCBVTV tai 2 thdi diem trudc va sau can
thiep. So' ngudl cd kien thlj'c trung binh ve bao
quan an toan HCBVTV b xa VTnh Long tai thdi
diem SCT da tang (tU 5,5% len 59,6%) va 6 xa
VTnh Quang tang \ii 8,1% len 25,0%. Sau can
thiep, tj' le ngUdi dan cd kien thtfc trung binh ve
bao quan an toan HCBVTV 6 xa cd can thiep
tang so vdi xa doi chutig (54,1% so vdi 16,9%),
HQ=775%. Nhijrig ngUdi cd kien thlj'c rat kem
ve bao quan an toan HCBVTV b xa can thiep
da giam 29,0% (p<0,05); b xa dd'i chUng cd
giam nhung khdng dang ke (3,5%),
HQ=71,1%. Sau can thiep, ngUdi phun hoa
chat b xa VTnh Long da nhan biet dUdc mau
sac chl thi do doc hai ghi tren bao bi dung
HCBVTV tang (tif 17,4% len 92,3%), sU khac
biet cd y nghTa thd'ng ke vdi p<0,05. T9 le
ngUdi phun hda chat b xa VTnh Quang cung
tang nhung khdng dang ke (tCf 10,6% len
22,0%), sU khac biet c6 y nghTa thdng ke vdl
p<0,05. Sau can thiep, ngUdi dan xa VTnh Long
da nhan biet dUpc mau sac chl thi dp dpc hai in
tren bao bi HCBVTV cung tang hdn so vdi xa
Vinh Quang (74,9% so vdi 11,4%),
Y HQC VigT NAM T H A N G 3 - 5 6 2/2D13
HQ=322,6%, Van de nSy hien chUa thKy
nghien cifu nao danh gia.
2. Danh gia thi/c hanh cua ngudi nong dan ve sijf dijng, bao quan HCBVTV trddc va sau can thiep: K§'t qua bang 3 cho th^y, so ho gia dinh co sCf dijng binh phun bj rd ri, TCT chiem t^ IS kha cao (VTnh Long: 30,6%, VTnh Quang: 35,4%); Tj' ie binh phun bj ro ri ciia ngudi dSn d dia bSn nghien ciru thSp han so vdi 19 le nay cua ngudi dan xa Ddng Ngac.
huyen f i r LiSrr. H4 Noi Id 45,76%: khi bj ro ri khdng xif IJ gi (23,87%). stfa bSng tay trin (69.23%) Le VSn Khiet[4]. Sau can thiep t^ ie ndy da giam nhdng van con cao (VTnli Long:
15,2%, VTnh Quang: 26,3%). Sau can thiep t9 le cac ho gia dinh sCf dung binh phun HCBVTV bj ro rl 6 xa VTnh Long giam hon xa doi chifng - Vinh Quang (15.4% so vdi 9.1%), HQ=25,7%,
Ket qua 6 bang 4 cho thay, hau het ngddi phun HCBVTV deu vift bo bao bi diing hoa chat d ngay ndi phun thuoc (28.0%), vift bo khdng ddng ndi quy djnh (43,9%), mdt so' khac dem chon lap (24,2%), co mot so' it ngddi sau khi sCf dung van gom iai cac vo bao bi dimg HCBVTV de ban. Ke't qua nay thap hdn nhieu so vdi nghien cifu cda Tran Qud'c Kham (2002)[3]. Sau thdi gian can thiep, t^ ie ngifdi phun HCBVTV dem chon iap vo. chai dimg HCBVTV da tang (ttr 24,2% ien 66,4%) mot each CO y nghTa tho'ng ke (p<0,05). So' ngtrdi vdt bd bao bi ddng HCBVTV khdng dung ndi quy dinh da giam (tif 43,9% giam xudng 13.5%) CO 5? ngTa thd'ng ke (p<0,05), \^ le ngifdi vift bo bao bi HCBVTV ngay tai ch5 phun thudc ciing giam tif 28,8% xuong 18,8% sau can thiep. Tai xa dd'i chimg, t^ ie vijft bo bao bi ddng HCBVTV ngay chd phun tham chi cung tang (tif 45,0% len 50,3%) cao hdn so vdi thdi diem TCT. T^ le chon lap bao bi HCBVTV c6 tang (tir 22.2% ien 23,4%) va t^ le vift vo bao dLTng hoa chat khong ddng ndi quy dinh da giam (tif 32.2% xuong 24,3%), Tuy nhien, sif khac biet nay khong c6 f nghTa thd'ng kd (p>0,05). Sau can thiep, Xi IS ngddi phun HCBVTV vift bo bao bi khong dung noi quy dinh 6 Vinh Long da giam hon xa do'i chifng (30,4% so vdi 7,9%), HQ=44,7%.
Bang 5 cho thay, ngirdi phun HCBVTV cl xa VTnh Long TCT rijfa binh phun chii yS'u 6 mirong (chiem 79.8%); t^ IS nay SCT da tang len 89.8%. nhdng sir khac biet nay khong co J
nghia tho'ng ke (p > 0.05). 6 xa VTnh Quang.
TCT ngddi phun HCBVTV rCfa binh phun d mifong chiem 76.1% va SCT t^ IS nay tang nhdng khong dang ke (77.3%). Ty IS ngddi phun hoa chli't bao ve thdc vat rCfa binh phun d mirdng xa VTnh Long SCT tang hdn so vdi xa ddi chifng (10.0% so vdi 1.2%); HQ=11,5%, Trddc can thiep, ngddi phun HCBVTV rCfa binh phun 6 ao ho xa VTnh Long chiem 1,3% va SCT ty IS niy giam con 0,9%. 6 xa VTnh Quang, TCT ngddi phun HCBVTV rCfa binh phun d ao chiem 1,2% va sau can thiep tJ ie ndy giam khong dang ke 1,0%, SCT X^ IS ngddi phun HCBVTV rira binh phun 6 ao ho xa VTnh Long giam hon so v6i xa doi chimg (0,4% so vdi 0,2%); HO = 14,1%.
V. KET LUiiN
1. Danh gia nhufng thay doj ve nhan thijfc sau khj diroc tap hua'n
So ngddi dan dddc tap huan ve sd dung an toan HCBVTV tang 26,2%; 6 xa doi chifng tang 6,5%; HQ=27,7%. So ngifdi c6 kien thdc trung binh ve bao quan an toan HCBVTV tang 54.1%; d xa ddi chifng tang 14.9%;
HQ=775.0%. NhCfng ngddi co y thdc kem ve bao quan an toan HCBVTV da giam 29,0%; d xa ddi chifng giam 3,5%; HQ=71,1%. Ty IS ng- ddi nhan bie't dddc m u sac chi dp dpc hai tren bao bi san pham HCBVTV tang 74,9%; d xa ddi chifng tang 11.6%; HQ=322,5%. TJ ie ngu'di CO kien thifc pha che HCBVTV theo dung ch! dan da tang 31.1%; 6 xa ddi chifng tang 4.1%; HQ=43,2% va thifc hanh pha hoa chat dung quy dinh tang 33.9%; 6 xa ddi chufng tang 8.4%; HQ=46.08%.
2. Danh gia thay doi ve thirc hanh sui dung va bao quan HCBVTV
Ji IS ngddi phun thudc dem chdn lap bao bi dimg HCBVTV sau khi sOf dung tang 42,2%;
6 xa ddi chimg tang 1.2%; HQ=168.9% va viit bao bi khdng dung ndi quy dinh giam 30.4%; d xa ddi chifng giam 7.9%; HQ=44.7%. TJ IS cac ho gia dinh co cat giii. bao quan HCBVTV trong nha giam 13.9%; cl xa ddi chdng giam 11,1%;HQ=17,4%.
TAI UEU THAM K H A O
1. Bo Y ti', Vu Y te Dv phong (2000). Bao ve silc khoe ngudl iao dong. NXB Ha Noi,
Y HOC VIET NAM THANG 3 -362/2013 N g u y § n Duy Bao (1995), Danh gia tinh
hinh 6 nhilm moi trudng khong khi va nhuTig anh hodng tdi sufc khoe con ngudi do sCf dung HCBVTV trong ndng nghiep. Hoi nghj khoa hoc ve y hoc lao dong va VSMT toan quoc lan tfiCf 2, HaNoi,tr.1-106.
TrSn Quoc Kham va S9ng s y (2002), Eieu tra anh hodng ciia tinh hinh si!f dung, bao quan hda chat bao ve thoc vat tdi sUc khoe ngudi ti§'p xuc cl viJng nong thon tinh Thai Binh, 3$ tai cS'p bd.
Le Van Khiet (1997), Nguy cd nhilm HCBVTV- Pesticides trong luu triJr va sit dung 6 ho gia dinh tai Dong Ngac-TO LiSm-Ha Noi, Chuyen de tot nghiep Bac si y khoa - Chuyen nganh VSIVIT-Djch tl-TrUdng Dai hoc Y Ha Noi.
BCli Thanh Tam, Le Thj Thanh Hu'dng va cong sU (2002), Xay dong mfl hinh cong dong SLf dung an to^n thud'c b^o ve thOc vat tai mflt huyen dong bang v^ mot huyen mi^n niii phia Bac. Tap chi Y te cdng cdng so 4 •
DIEN cue dc TAI:
VAI TRO CUA CHAN DOAN HJNH ANH
Ooan Thj Hong H o a * , Le Van Khang*
T 6 M TAT
Nghien culi dOdc thOc hien nhSm phan tich hinh anh cat ldp vi tinh (CLVT) va cpng hOdng tir (CHT) trong bilan dat dien cOc 6c tal (DCOT). 35 trUcfng hdp diec sau hai tai, dOdc tien hanh lam bilan cho dat dien cOc 6c tai tCf thang 1/2011 tdi thang 4/2012 tai khoa chain doan hinh anh ciia benh vien Bach mai,. I<et qua thu dOdc bao gom nam/nu" la 18/17/ tuoi trung binh la 8 tuoi. khong co tru'dng hdp nao bat thu'dng ve ong tai ngoai. Bat thu'dng cau true tai giii'a cd 6 tru'dng hdp (17.1%), viem tai giCi^ Of djch 10 tru'dng hdp (28.6%).
Bat thu'dng cau true tai trong co 2 tru'dng hdp (5.7%) va CO 3 tru'dng hdp viem me nhT (8.6%). Tom lai, cat Idp VI tinh va cong hu'dng tif la hai phu'dng phap quan trong trong bilan dat dien cu'c 6c tai.
SUMMARY
COCHLEAR IMPLANT: ROLE OF CT AND MR IMAGING
This study was analysed scannographic and magnetic resonance imaging features of cochlear implant candidates. 35 cases suffering from bilateral profound deafness, undergone screening for G. from Jan 2011 to April 2012. Temporal CT scanner, Brain and inner ear MR imaging were performed In the Bachmai Hospital. The results showed that male/
female is 18/17, average age is 8 yaers. None has outer ear abnormality. Six cases (17.1%) have malformation of middle ear. Ten cases (28.6) suffer from acute otitis media. Two cases with inner malfomiation and three cases with labirynthitis. In general, CT scanner and MR imaging play an important role In preoperative bilan of CI.
•*• Benh vien Tai Mui hgng; * Benh vien Bach Mai Phin bifn lihoa hgc: GS.TSKH. Vu Minh Thyc
\. TONG Q U A N .
Doi vdi cac benh nhan diec dac hoan toan hai tai, khi may t r d thi'nh khong co tac dung thi phau thuat dat dien ci/c 6c tai la phu'dng phap mang lai hieu qua rat tot giup cho cac benh nhan nay d\idc song trong the gidi am thanh, cai thien kha nang hpc tap va lao dpng.
Dat DCOT tren the gidi da du'dc ap dung tir nhii'ng nam dau cua thap ki 70 va da lien tuc phat trien vcfi nhu'ng tien bp dac biet ve cong nghe. 6 Viet nam, phau thuat cay DCOT ddn kenh da du'dc tien hanh tCr nam 2000, nhutig sau mot vai tru'dng hdp ket qua thu dOdc han che nen d mien Bac, phau thuat nay tam nguVig mot thdi gian. Vai nam gan day, cung vdi so phat trien kinh te va nhu cau cap thiet ciia ngu'di benh, dac biet co s i / ho t r d cua cac chuyen khoa nlio than l<lnh, chan doan hinh anh, chuyen gia luyen gipng va hieu chinh may, cay DCOT da kenh lai tien hanh thu'dng qui hdn. De dam bao cho viec cay dien cOc 6c tai thanh cong ca ve mat ky thuat va va kha nang nghe ndi cho benh nhan ve lau dai, doi hoi can thOc hien nghiem ngat mpt bilan day dii ve lam sang, thinh hpc, than kinh.,.dong thdl khong the thieu bilan ve mat chan doan hinh anh, gom hai phOdng phap quan trpng va bo' sung cho nhau. Do la chup CLVT va CHT. Chup cat Idp vi tinh cho phep danh gia chi tiet ve cau true tai ngoai, tai giii'a va tai trong, dac biet la cau true 6c tai ndi ma dien ci/c
