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The success of treatment strategies to control the disease relapse requires determining factors affecting the incident short-time and long-time of disease relapse. Therefore, this study was aimed to identify the factors affecting of short-and long-time of occurrence of disease relapse in patients with tuberculosis (TB) using a parametric mixture cure model.In this historical cohort study; the data was collected from 4564 patients with TB who referred to the Tuberculosis and Lung Diseases Research Center of Dr. Masih Daneshvari Hospital from 2005 to 2015. In order to evaluate the factors affecting of short-and long-time of occurrence of disease relapse, a parametric mixture cure model was used.In this study, the estimation of the annual incidence of TB relapse showed that the probability of recurrence in the first year is 1% and in the third and tenth years after treatment is 3% and 5%, respectively. In addition, the results of this study showed that the variables of residence, exposure to cigarette smoke, adverse effects of drug use, incarceration, and pulmonary and extra- pulmonary tuberculosis were the factors affecting the short-time recurrence of TB. The variables of drug use, pulmonary and extra- pulmonary tuberculosis, and also incarceration affected the long-term recurrence of this disease.Cure models by separating factors affecting the short-time occurrence from the long-time occurrence of disease relapse can provide more accurate information to researchers to control and reduce TB relapse.

A significant link between diabetes mellitus (DM) and tuberculosis (TB) has been widely demonstrated. DM increases the risk of TB in all aspects. The aims of this study were to assess the prevalence of DM among newly diagnosed TB patients, to screen these patients for DM, and to determine the number needed to screen (NNS) to diagnose new cases of DM.A prospective cohort descriptive study was carried out in Iranian adults admitted to the National Research Institute of Tuberculosis and Lung Disease from 2012 to 2013 with a new diagnosis of TB. Glycated hemoglobin (HbA1c) and fasting blood glucose (FBG) were measured for all patients.Of the 293 patients included, 101 (34.5%) had DM. DM was newly diagnosed in 45 (19%) patients. The number needed to screen was 5 to identify one new DM case. Age ≥ 40 years was associated with DM in this population (odds ratio (OR) = 3.91, 95% confidence interval (CI) = 1.47-10.38).Screening for DM should be performed routinely in patients with TB and may improve treatment outcomes.

Background : In preparation for pandemic HINI or H1N1 influenza (H1N1) it is necessary to identify factors associated with mortality of patients with HINI and hospital admissions to intensive care unit (ICU) of patients diagnosed in 2009 with HINI. Objectives : To describe the clinical and epidemiological features associated with 2009 HIN1 mortality and ICU patient admissions to Masih Daneshvari Teaching Hospital, Iran. Methods : A retrospective cross-sectional study was conducted among patients with mortality and admissions to ICU with confirmed HINI. Demographic, clinical, laboratory, radiological findings, and epidemiologic data were abstracted from medical records, using a standardized datasheet. Results : From June through December 2009, 20 out of the 46 confirmed hospitalized patients with confirmed H1NI were admitted to the ICU and 7 (15%) died. Among various variables, opium inhalation (P = 0.01), having productive cough, hemoptysis, chest pain, confusion, and loss of consciousness were significantly related to ICU admission (P < 0.05). Pleural effusion (P = 0.006), elevated liver enzymes, as well as CPK and LDH level were significantly relevant to ICU admission (P < 0.05). Delayed antiviral treatment was more common among patients who died and the elderly. Discussion : Patients who were admitted to ICU with confirmed H1N1 included the following risk factors: delayed initiation of antiviral therapy, history of opium inhalation and symptoms including; productive cough, hemoptysis, chest pain, confusion, and loss of consciousness. The mortality rate in the study population was high but compares favorably with other recent published studies.

Background: This study performed at the National Research Institute of Tuberculosis and Lung Disease, Tehran, Iran, aimed to evaluate the effect of concomitant pulmonary hypertension on the outcome of pulmonary tuberculosis. Methods: New cases of pulmonary tuberculosis were recruited for the study. Pulmonary hypertension was defined as systolic pulmonary arterial pressure ≥35 mm Hg estimated by transthoracic Doppler echocardiography. We assessed the relationship between pulmonary hypertension and mortality during the six-month treatment of tuberculosis. Results: Of 777 new cases of pulmonary tuberculosis, 74 (9.5%) had systolic pulmonary arterial pressure ≥35 mm Hg. Ten of them (13.5%) died during treatment compared to 5% of cases with pulmonary arterial pressure less than 35 mm Hg (p = 0.007). Logistic regression analysis showed that pulmonary hypertension and drug abuse remained independently associated with mortality (OR = 3.1; 95% CI: 1.44–6.75 and OR = 4.4; 95% CI: 2.35–8.17, respectively). Conclusion: A significant association was found between mortality and presence of pulmonary hypertension and drug abuse among new cases of pulmonary tuberculosis. Keywords: Tuberculosis, Pulmonary hypertension, Echocardiography, Survival

We evaluated diagnostic yield of third sputum smear in patients co infected with HIV for detection of pulmonary tuberculosis. Among 139 pulmonary tuberculosis cases confirmed with positive sputum culture, diagnostic yield of first smear of sputum with acid fast staining was 83.5%. Incremental yield of 2nd and 3rd samples was 11.2% and 5.2% respectively. So two sputum smears may be enough for primary evaluation of HIV infected patients suspected to TB.

Acute tubercular appendicitis has remained a rare disease despite frequent cases of tuberculosis. The following study reports a patient with multidrug-resistant (MDR) pulmonary tuberculosis that developed acute appendicitis. Histopathology of the appendix was compatible with tuberculosis. The patient had a good outcome after surgery and medical therapy.