Plain English Summary
Background and study aims
Tuberculosis (TB) is a bacterial infection that commonly affects the lungs. There are antibiotics that can treat TB, but some strains of the bacteria are resistant to one or more of these antibiotics and the infection can become hard to treat using medicines. It is also possible to treat drug-resistant TB with surgery, by removing infected parts of the lung or collapsing the lung to close cavities. The aim of this study is to follow up patients with TB, whether they were treated with surgery or not, so investigate how surgical treatment affects their TB infection status, level of disability and survival.
Who can participate?
All patients at a Moscow Hospital who were diagnosed with drug-resistant TB between 2011 and 2017.
What does the study involve?
This is an observational study, which means that participants received treatment as usual depending on their condition. Patients received initial drug treatment according to Russian Federation guidelines and then were offered surgery if their doctor thought it was appropriate. Participants could receive drug treatment after surgery as appropriate.
What are the possible benefits and risks of participating?
There were no additional risk for participants enrolled in the study, because their treatment was performed according to guidelines. Participants could benefit from free examinations and additional follow-up and treatment.
Where is the study run from?
I.M. Sechenov First Moscow State Medical University (Russian Federation)
When is the study starting and how long is it expected to run for?
October 2011 to December 2017
Who is funding the study?
The investigator is funding the study.
Who is the main contact?
Professor Dmitry Giller, email@example.com
Pulmonary tuberculosis surgical treatment in patients with multiple and extensive drug-resistant mycobacterial infection
Radical and semi-radical surgical treatment application can increase treatment efficacy of patients with destructive pulmonary tuberculosis with multiple and extensive drug-resistant Mycobacterium tuberculosis infection.
Approved 06/03/2013, I.M. Sechenov First Moscow State Medical University (Sechenov University) Local Ethics Committee 119991 (8 Trubetskaya str. Building 1, Moscow, Russia; +7 495 622-97-06), ref: 03-13
Observational retrospective study
Primary study design
Secondary study design
Patient information sheet
Not available in web format, please use contact details to request a participant information sheet.
Patients with determined drug resistance were enrolled in study and divided into five groups depending on drug resistance: extensively drug-resistant (XDR), multiple drug-restistant (MDR), poly-drug-resistant (PolyDR), monodrug-resistant (MonoDR) and drug-sensitive (DS).
Before surgery was considered, they were treated with antitubercular chemotherapy using one of the standard chemotherapy regimens in the Russian Federation (Guidelines for improving the diagnosis and treatment of respiratory tuberculosis (approved by order of the Ministry of Health of the Russian Federation dated December 29, 2014 No. 951) https://www.garant.ru/products/ipo/prime/doc/70749840/) depending on the degree of drug resistance and patient examination. Before surgery patients had on average 3-6 months of chemotherapy.
Then surgery was performed. Some patients, especially with bilateral lesions had multistage surgical treatment. Overall 2172 surgeries was performed in 1259 patients. Surgeries performed were: thoracoplasty, segmentectomy, combined polysegmental resections, lobectomy, bilobectomy, lobectomy plus segmentectomy, pneumonectomy, pleuropneumonectomy, transsternal main bronchus occlusion. All patients signed consent before every intervention. Follow-up was performed regularly up to 5 years, with observation duration of 6 years.
For a more objective assessment of the study results , each of the above groups were divided into three subgroups, depending on the radical surgery degree:
- Radical (no TB alterations in pulmonary parenchyma and intrathoracic lymphadenopathy [ITLN] verified with computerise tomography [CT])
- Semi-radical (remaining foci or tuberculomas without destruction in operated/contralateral lung; cases with remained cavern under thoracoplasty were also included, because tendency for cavity closureis usually observed in terms up to 6 months.)
- Palliative (cases with bilateral cavitary TB, when surgery was applied just on one side due to patient’s rejection of treatment or low cardiorespiratory reserves; elimination of life-threatening conditions without destructions removal)
All groups received treatment in the same hospital and received the following tests:
- Blood test
- Mantoux test
- Diaskin test
- Blood gases
- CT scan
- Microbiological examination of sputum, an operational material with the additional use of accelerated diagnostic methods of DR MBT (BACTEC, molecular genetic methods: real-time PCR - Xpert MTB / RIF and PCR-TB biochips; cultural method);
- Morphological study of gross section
- Methods of statistical data processing.
Primary outcome measure
1. Presence of cavities in pulmonary tissue (CV+/CV-) determined with CT scan/digital X-ray on discharge from the hospital
2. Presence of M tuberculosis assessed using AFB smear test of sputum (AFB+/AFB-) using sputum fluorescent microscopy and culture method on discharge from the hospital
Secondary outcome measures
1. Presence of cavities in pulmonary tissue (CV+/CV-) determined with CT scan/digital X-ray every year for 5 years (1st, 2nd, 3rd, 4th, 5th year) after discharge
2. Presence of M tuberculosis assessed using AFB smear test of sputum (AFB+/AFB-) using sputum fluorescent microscopy and culture method every year for 5 years (1st, 2nd, 3rd, 4th, 5th year) after discharge
3. TB relapse assessed by clinical follow-up up to 5 years (1st, 2nd, 3rd, 4th, 5th year) after discharge.
4. Degree of disability assessed by checking patients' documentation and anamnesis (patentient's account of medical history) during follow-up up to 5 years (1st, 2nd, 3rd, 4th, 5th year) after discharge.
5. Survival assessed by follow-up up to 5 years (1st, 2nd, 3rd, 4th, 5th year) after discharge.
Overall trial start date
Overall trial end date
Reason abandoned (if study stopped)
Participant inclusion criteria
Every patient with a diagnosis of drug-resistant M tuberculosis admitted in our clinic between 2011 and 2017 was included in this study.
Target number of participants
Participant exclusion criteria
Patients with unknown drug resistance admitted in our clinic between 2011 and 2017
Recruitment start date
Recruitment end date
Countries of recruitment
Trial participating centre
I.M. Sechenov First Moscow State Medical University (Sechenov University)
8 Trubetskaya str.
Investigator initiated and funded
Funding Body Type
Funding Body Subtype
Results and Publications
Publication and dissemination plan
A publication titled "Long Term Surgical Treatment Results Of Multi And Extensive Drug Resistant Pulmonary Tuberculosis, Depending On Radical Surgery Degree" is planned to be submitted to a journal by 01/08/2019.
2019 results presented at the 27th European Conference on General Thoracic Surgery in https://emma.events/static/upload/ow76/events/ev222/Site/files/ESTS19_Publication_BoA_FINALVERSION.pdf (see abstract O-021)
IPD sharing statement:
The datasets generated and/or analysed during the current study during this study will be included in the subsequent results publication.
Intention to publish date
Participant level data
To be made available at a later date
Basic results (scientific)