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DOTS PLUS IN DEVELOPING COUNTRIES EXPERIENCES & IMPLICATIONS

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Presentation on theme: "DOTS PLUS IN DEVELOPING COUNTRIES EXPERIENCES & IMPLICATIONS"— Presentation transcript:

1 DOTS PLUS IN DEVELOPING COUNTRIES EXPERIENCES & IMPLICATIONS
Dr. Nirmal Kumar Jain MD, DNB(RM) Professor & Head and Medical Superintendent Hospital for Chest Disease & Tuberculosis SMS Medical College, Jaipur

2 To prevent further development and spread of MDR-TB.
DOTS PLUS A case management strategy under development, designed to manage MDR-TB using second line drugs within the DOTS strategy in low – and middle – income countries. To prevent further development and spread of MDR-TB.

3 DOTS-PLUS PREREQUISITES
The potential DOTS-Plus pilot project site should : DOTS strategy is in place and is functioning well. Government commitment and adequate funding. Co-ordinated project management plan. Adequate laboratory services. Rational treatment strategy. Adequate information (data) management system.

4 DOTS REFERALS Name of Medical College 2000 2001 2002 2003 2004 Total Jaipur 3238 4066 4371 4936 5147 21758 Udaipur 513 2719 2554 2227 2536 10549 Bikaner - 424 716 972 1449 3561 Jodhpur 1191 1107 2298 Ajmer 614 604 910 1631 1286 5045 Kota 4365 7813 8551 10957 11525 43211

5 PATIENT PUT ON MDR-TB TREATMENT
MONTH YEAR-2002 YEAR-2003 YEAR-2004 January 109 214 157 February 125 190 144 March 150 173 154 April 151 178 147 May 159 186 137 June 138 192 213 July 160 119 220 August 175 236 211 September 225 October 181 145 189 November 92 187 December 209 120 Total : 1808 2057 2174

6 Deptt. of Chest Diseases & Tuberculosis, SMS Medical College, Jaipur.
FACTORS RESPONSIBLE FOR TREATMENT FAILURE AMONG PATIENTS ON DOTS REGIMEN BY Dr. N.K. Jain Dr. Himanshu Garg Dr. Shubhranshu Dr. S.P. Agnihotri Dr. N. Joshi Dr. S. Koolwal Deptt. of Chest Diseases & Tuberculosis, SMS Medical College, Jaipur.

7 DISTRIBUTION OF PATIENTS ACCORDING TO CATEGORY OF TREATMENT
S.No. Category No. % 1. Cat. I Failure 48 32.88 2. Cat. II Failure 98 67.12 Total : 146 100

8 MYCO BACTERIAL CULTURE & SENSITIVITY PATTERN OF CATEGORY I FAILURE PATIENTS
S.No. Pattern No. % 1. Smear Positive Culture Negative 10 20.83 2. Sensitive to all drugs 16 33.34 3. HR resistance 12 25 4. HER resistance 3 6.25 5. SHR resistance 6. HRQ 7. Resistance to all drugs Atypical Mycobacteria 1 2.08 Total : 48 100 H= Isoniazid, R= Rifampicin, E= Ethambutol, S= Streptomycin, Q= Quinolones

9 After Conventional Chemotherapy
DISTRIBUTION OF CATEGORY II FAILURE PATIENTS ACCORDING TO HISTORY OF CHEMOTHERAPY S.No. Group After Cat. I Treatment After Conventional Chemotherapy Total No. % 1. Relapses 9 25 12 21.43 21 2. Defaulters 17 47.22 26 46.43 43 43.88 3. Failures 10 27.78 18 32.14 28 28.57 4. Fresh cases (Wrongly Categorized) -- 6 6.12 Total : 36 100 56 98

10 MYCO BACTERIAL CULTURE & SENSITIVITY PATTERN OF CATEGORY II FAILURE PATIENTS
S.No. Pattern No. % 1. Smear Positive Culture Negative 8 8.16 2. Sensitive to all drugs 17 17.35 3. HR resistance 25 25.51 4. SHR resistance 24 24.49 5. SHER resistance 9 9.18 6. SHR Ed P T resistance 3 3.06 7. SHER T Q 8. HE 9. SH resistance 2 2.04 10. HRQ 11. Resistance to all drugs Atypical Mycobacteria Total : 98 100 Ed=Ethionamide, T=Thioaceteazone, P=Para Amino Salicylic Acid

11 DRUGS FOR MDR-TB RESERVE ANTI-TUBERCULOSIS DRUGS.
Aminoglycosides. Amikacin mg/kg Hearing loss, ataxia, b.i.d Nystagmus,Azotemia, Protein urea etc. Kanamycin mg/kg do-- Capreomycin mg/kg --do-- Others. PAS mg/kg Nausea, Vomiting, Diarrhea, Hepatitis Ethionamide mg/kg Nausea, Vomiting, Hepatitis Prothionamide mg/kg --do-- Cycloserine mg/kg Neurotoxicity, Heart failure

12 Newer Anti-tuberculosis Drugs.
Quinolones. Ciprofloxacin mg/day Nausea, Vomiting, Ofloxacin mg/day Diarrhoea, Insomnia, Pefloxacin mg/day Headache, Skin Rash, Lomefloxacin mg/day Tremulous, Sparfloxacin mg/day Drug Interactions. Levofloxacin mg/day - Gatifloxacin mg/day - Moxifloxacin mg/day -

13 Newer and Experimental Anti-tuberculosis Drugs.
Macrolides. Roxithromycin mg/day G.I. Disturbances, Nausea, Diarrhoea, Dyspepsia & Pain Clarithromycin mg/day Abdomen, Dysphoria, Enzyme (High Dose). Azithromycin mg/day Rifamycin Derivatives. Rifabutin mg/day Nausea, Vomiting, Hepatitis, Flulike, Syndrome, Renal failure, Rifabutin mg/day Thrombocytopenia, Haemolytic anemia. Rifalazil

14 Newer and Experimental Anti-tuberculosis Drugs.
B-Lactamase Inhibitors. Amoxycillin (625mg)/ Skin rash, Anaphylaxis, Clavulanate to 2gm Diarrhea, Candidiasis, PM, Collitis, Hepatitis Ticarcillin & Cholstatic Jaundice. Clavulanate. Immunophenazine Derivatives. Clofazemine mg/day. Skin pigmentation, GI upset. Oxazolidinones Nitroimidazopyrans

15 Management of Multi Drug Resistant Tuberculosis.
1. Retreat with at least 3 or 4 new drugs for first 3 to 6 months (Total 5 to 7 drugs). 2. Continue chemotherapy with 2 to 3 new drugs. 3. Previously used drugs may be used in addition. 4. Use combinations with little potential of cross resistance. 5. A single drug should never be added.

16 Management of Multi Drug Resistant Tuberculosis.
6. Start with small dosage, increase to maximum. 7. Treatment should be initiated in hospital/directly supervised. 8. Careful bacteriological monitoring essential. 9. Surgery/ Immunotherapy should be considered in patients poorly responding to medical treatment. All measures – not to stop treatment. Intermittent therapy usually not effective. Optimal duration, 18-to-24 months after culture conversion.

17 MDR TB treatment regimens
Resistance profile Initial phase Continuation phase drugs months drugs months Isoniazid Aminoglycoside 3-6 Ethambutol +rifampicin Ethambutol ± pyrazinamide (ASCC) ± streptomycin Pyrazinamide Quinolone Quinolone Ethionamide Ethionamide Comments Aminoglycoside not previously used as injectable drug for 3 to 6 months ETB dose may be increased to 25 mg/kg PZA in the continuation phase may add to response rate Inclusion of ETB & PZA – associated with favourable outcome Consider surgery if no conversion after 6 months

18 MDR TB treatment regimens
Resistance profile Initial phase Continuation phase drugs months drugs months Isoniazid Aminoglycoside 3-6 ± pyrazinamide + rifampicin Pyrazinamide Quinolone (ASCC) + ethambutol Quinolone Ethionamide ± streptomycin Ethionamide PAS/Cycloserine PAS/ Cycloserine Comments Aminoglycoside not previously used as injectable drug for 3 to 6 months PZA in the continuation phase may add to response rate Consider surgery if no conversion after 6 months

19 MDR TB treatment regimens
Resistance profile Initial phase Continuation phase drugs months drugs months Isoniazid Aminoglycoside 3-6 Ethambutol + rifampicin Ethambutol Quinolone (ASCC) + pyrazinamide Quinolone Ethionamide ± streptomycin Ethionamide PAS/Cycloserine PAS/ Cycloserine Comments Aminoglycoside not previously used as injectable drug for 3 to 6 months ETB dose may be increased to 25 mg/kg with careful monitoring for retrobulbar neuritis PZA in the continuation phase may add to response rate Consider surgery if no conversion after 6 months

20 MDR TB treatment regimens
Resistance profile Initial phase Continuation phase drugs months drugs months Isoniazid Aminoglycoside 3-6 Quinolone + rifampicin Quinolone Ethionamide (ASCC) + ethambutol Ethionamide PAS + pyrazinamide PAS Cycloserine ± streptomycin Cycloserine Comments Aminoglycoside not previously used as injectable drug for 3 to 6 months

21 Potential Regimen for Patients with Multi Drug Resistant Tuberculosis.
Resistance Suggested Duration. Regimens. HR (+ S)* AEZQ 24 months. HER (+ S)* AZQ months. ASC HRZ (+ S)* AEQ months. ASC HRZ (+ S)* AQ months. ASC A=Aminoglycoside - SM/KM/CM/AM Q=Quinolones - Cipro/Oflo/Spar/Levo/Gati + = 2 or 3 drugs among ETH/PTH/PAS/CYC/Macrolides/-lactam inhibitor/Others. * = Surgery may be considered.

22 PRIORITY RESEARCH AGENDA FOR DOTS-PLUS FOR MDR-TB
Primary topics Identify optimal standardised protocols to treat MDR-TB. Identify optimal protocols for diagnostic testing. Identify the minimum requirement for constructing and implementing DOTS-Plus. Secondary topics Identify threshold indicators for implementing DOTS-Plus. Other operational issues.

23 Deptt. of Chest Diseases & Tuberculosis, SMS Medical College, Jaipur.
EFFICACY OF DIFFERENT REGIMENS IN TREATMENT OF DOTS CATEGORY II FAILURE OF PULMONARY TUBERCULOSIS BY Dr. N.K. Jain Dr. Shubhranshu Deptt. of Chest Diseases & Tuberculosis, SMS Medical College, Jaipur.

24 Radiological Response*
RESPONSE OF DOTS CATEGORY II FAILURE PATIENTS ON DIFFERENT REGIMEN AT THE END OF 6 MONTHS Group Total no. of cases Sputum Status* Radiological Response* Clinical Response* -Ve +Ve Imp. Stat. Quo. Det. No Imp. I-KHEZQP 28 23 (82.14%) 5 (17.85%) 22 (78.57%) 6 (21.43%) - 25 (89.28%) 3 (10.71%) II-KHEZQEd. 27 21 (77.78%) (22.22%) 19 70.37%) 8 (29.63%) III-KHEZQPEd. (81.48%) (18.51%) 24 (88.89%) (11.11%) *Percentages from total no. of cases in each group. IMP=Improvement, Stat.= Status, Det.= Deterioration.

25 Group & Total No. of Cases
RESPONSE OF DOTS CATEGORY II FAILURE PATIENTS ON DIFFERENT REGIMEN AT THE END OF 12 MONTHS Group & Total No. of Cases Deaths* Drug Toxicity* Remaining Cases Sputum Status* -Ve +Ve I-KHEZQP/HEZQP (28) - 28 24 (85.47%) 4 14.20%) II-KHEZQEd./ HEZQEd (27) 1 (3.7%) 26 22 (81.48%) (14.82%) III-KHEZQPEd./ HEZQPEd. (27) 21 (77.78%) 5 (18.52%) *Percentages from total no. of cases in each group. IMP=Improvement, Stat.= Status, Det.= Deterioration. Contd…

26 Radiological Response*
RESPONSE OF DOTS CATEGORY II FAILURE PATIENTS ON DIFFERENT REGIMEN AT THE END OF 12 MONTHS Group & Total No. of Cases Remaining Cases Radiological Response* Clinical Response* Imp. Stat. Quo Det. No Imp. I-KHEZQP/ HEZQP (28) 28 18 (64.29%) 4 (14.20%) 2 (7.14%) 24 (85.47%) II-KHEZQEd./ HEZQEd (27) 26 22 (81.48%) (7.4%) III-KHEZQPEd./ HEZQPEd. (27) 21 (77.78%) 1 (3.7%) (14.82%) *Percentages from total no. of cases in each group. IMP=Improvement, Stat.= Status, Det.= Deterioration.

27 Group & Total No. of Cases
RESPONSE OF DOTS CATEGORY II FAILURE PATIENTS ON DIFFERENT REGIMEN AT THE END OF 18 MONTHS Group & Total No. of Cases Deaths* Drug Toxicity* Remaining Cases Sputum Status* -Ve +Ve I-KHEZQP/ HEZQP (28) 2 (7.14%) 24 17 (60.71%) 7 (25%) II-KHEZQEd./ HEZQEd (27) (7.4%) 3 (11.11%) 22 16 (59.26%) 6 (22.22%) III-KHEZQPEd./ HEZQPEd. (27) 1 (3.7%) 4 (14.82%) 18 (66.67%) *Percentages from total no. of cases in each group. IMP=Improvement, Stat.= Status, Det.= Deterioration. Contd…

28 Radiological Response*
RESPONSE OF DOTS CATEGORY II FAILURE PATIENTS ON DIFFERENT REGIMEN AT THE END OF 18 MONTHS Group & Total No. of Cases Remaining Cases Radiological Response* Clinical Response* Imp. Stat. Quo Det. No Imp. I-KHEZQP/ HEZQP (28) 24 17 (60.71%) 3 (10.71%) 4 (14.29%) 2 (7.14%) 5 (17.86%) II-KHEZQEd./ HEZQEd (27) 22 16 (59.26%) - 6 (22.22%) III-KHEZQPEd./ HEZQPEd. (27) 18 (66.67%) (14.82%) (7.4%) *Percentages from total no. of cases in each group. IMP=Improvement, Stat.= Status, Det.= Deterioration.

29 Cases Exclude from Response
COMPARISON OF OVERALL RESPONSE OF DOTS CATEGORY II FAILURE ON DIFFERENT REGIMEN AT THE END OF 18 MONTHS Group & Regimen No. of Cases Favorable Response Unfavorable Response Cases Exclude from Response I-KHEZQP/HEZQP 28 17 (60.71%) 8 (28.57%) 3 (10.71%) II-KHEZQEd./ HEZQEd. 27 16 (59.26%) (29.63%) (11.11%) III-KHEZQPEd./ HEZQPEd. 18 (66.67%) 5 (18.51%) 4 (14.81%) TOTAL : 82 51 (62.2%) 21 (25.6%) 10 (12.2%)

30 ISSUES DOTS MDR-TB TB Suspects -H/O cough for 3 weeks Failure of RNTCP Cat.II(Chronic case) or more duration Patients receiving inappropriate, incomplete, irregular teratment, 2 or more time against NTCP policy. Diagnostic sputum examination Direct microscopy modalities (Spot-Early Morning-Spot) ,2,3,4,5,6,9,12,15,18,21,24 - Early Morning-Spot Myco C/S test Cat.I 2,4, ,3,6,9, --- Cat.II 3,5, X-ray Cat.III 2, ,3,6,9,12,15,18,24 Outcome -Cure rate in new smear +ve % cases=85% or more Cure rate in re-treatment cases=70% or more

31 ISSUES DOTS MDR-TB Management -IP: 3/7 (Thrice a week on alternate day) IP: 7/7 (Daily) -CP: 1/7 (Thrice a week on alternate day, CP: 7/7 (Daily) one dose supervised) Cost on Investigation -Rs / ,000/- Cost Cat. I 2(HRZE)3/ 4(HR)3 Rs.600/ KHEZQEd/HEZQEd Rs.21688 -Catt.II 2(SHRZE)3/ 1(HRZE)3/ KHEZQP/HEZQP Rs.28996 5(HRE)3 Rs / KHEZQPEd/HEZQPEd Rs.37096 -Cat.III 2(HRZ)3/ 4(HR)3 Rs /-

32 DRAFT POLICY SUGGESTIONS
Emphasis should be given to prevent MDR-TB by wider use of DOTS by medical professionals and to achieve cure rate of more than 85% in new sputum positive cases and more then 70% in retreatment cases. Wider community participation by identifying their strengths. II line drugs should be used only when resistance to I line drugs exists or patients fails on WHO Category II regimen. Drugs under EDL should be used on priority basis, as these are effective, less toxic, affordable and well tolerated by patients. Kanamycin and Ethionamide be included in EDL. Treatment of MDR-TB should be supervised and drugs should be made available for not more than 15 days. Treatment should be supervised by the nearest DOT provider and empty strip/blister packs be deposited fortnightly. 6. In intensive phase: 1 injectable & 3-4 oral drugs may be administered for 3 to 6 months. In continuation phase: 3 oral drugs preferably those not used in past may be administered for 18 months. Contd. …

33 DRAFT POLICY SUGGESTIONS
7. II line drugs should be guaranteed available in specialized units attached with laboratories having culture & sensitivity facility. 8. II line drugs should be available on prescription of highly skilled specialist (Prof./Ass.Prof. of TB & Chest Hospitals). 9. MDR-TB prescription can be scrutinized by EDL committee made for rational use on Anti-TB drugs. 10. EDL committee be asked to submit report on rational use of II line drug in terms of combination, intermittency and length of time, cost incurred, cost effectiveness and prohibitory cost. 11. Since MDR-TB treatment is a last crusade against TB for survival, as per WHO recommendations, II line drugs need to be administered under strict supervision of a personnel who is highly skilled.

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38 DOTS PLUS IN DEVELOPING COUNTRIES
Ensure effective DOTS – No further MDR-TB. Early diagnosis of MDR-TB High index suspicion - smear +ve at 3rd month Mycobacterial C/S - continuation of DOTS Standardized treatment regimens possible I-KHEZQP/HEZQP II-KHEZQEd./ HEZQEd. III-KHEZQPEd./ HEZQPEd. Reliable supply of high quality II line anti-TB drugs All measures of strict adherence to therapy Rigorous quality assurance, monitoring & evaluation Most cost effective According to pattern of local resistance.

39 THANKS


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