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Efficacy of extended DOTS category I chemotherapy in spinal tuberculosis based on MRI-based healed status

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Abstract

Background: Duration of treatment in tuberculosis of spine has always been debatable in the absence of marker of healing. The objective of the study was to evaluate the efficacy of extended DOTS regimen (2 months of intensive phase and 6 months of continuation phase) as recommended by WHO, by using MRI observations as the healing marker.

Materials and Methods: 51 (Group A -28 prospective and Group B- 23 retrospective) patients of spine TB with mean age of 26.8 years (range 15–54 years) diagnosed clinico radiologically/imaging (n=36), histopathology or by PCR (n=15) were enrolled for the study. They were treated by extended DOTS regimen (2 months of HRZE and 6 months of HR) administered alternate day. The serial blood investigations and X-rays were done every 2 months. Contrast MRI was done at the end of 8 months and healing changes were recorded. Criteria of healing on the basis of MRI being: complete resolution of pre and paravertebral collections, resolution of marrow edema of vertebral body (VB), replacement of marrow edema by fat or by calcification suggested by isointense T1 and T2 weighted images in contrast enhanced MRI. Patients with non healed status, but, responding lesion on MRI after 8 months of treatment were continued on INH and rifampicin alternate day and contrast MRI was done subsequently at 12 months and 18 months till the healed status was achieved.

Results: 9 patients had paraplegia and required surgical intervention out of which 1 did not recover neurologically. All patients have completed 8 months of extended DOTS regimen, n=18 achieved healed status and duration of treatment was extended in rest (n=33) 5 were declared healed after 12 months, 8 after 18 months and one after 36 months of treatment, thus 32 were declared healed at varying periods.

Conclusion: 35.2% patients demonstrate MRI based healed vertebral lesion at the end of 8 months of extended category 1 DOTS regimen. It is unscientific to stop the ATT by fixed time frame and MRI evaluation of the patients is required after 8 months of ATT and subsequently to decide for the continuation stoppage of treatment.

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Authors and Affiliations

  1. Department of Radiodiagnosis, INMAS, Timarpur, Delhi, India

    Namita Singh Saini

  2. Department of Orthopaedics, UCMS and GTB Hospital, Dilshad Garden, Delhi, India

    Anil K. Jain (Professor of Orthopaedics), Amit Srivastava, Ish K. Dhammi, Ravi Sreenivasan & Sudhir Kumar

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  1. Anil K. Jain
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  2. Amit Srivastava
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  3. Namita Singh Saini
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  4. Ish K. Dhammi
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  5. Ravi Sreenivasan
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  6. Sudhir Kumar
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Correspondence to Anil K. Jain.

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Jain, A.K., Srivastava, A., Saini, N.S. et al. Efficacy of extended DOTS category I chemotherapy in spinal tuberculosis based on MRI-based healed status. IJOO 46, 633–639 (2012). https://doi.org/10.4103/0019-5413.104191

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