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PubMed2002

Clinically significant interactions with drugs used in the treatment of tuberculosis.

Clinically significant interactions occurring during antituberculous chemotherapy principally involve rifampicin (rifampin), isoniazid and the fluoroquinolones. Such interactions between the antituberculous drugs and coadministered agents are definitely much more important than among antituberculous drugs themselves. These can be associated with consequences even amounting to therapeutic failure or toxicity. Most of the interactions are pharmacokinetic rather than pharmacodynamic in nature. The cytochrome P450 isoform enzymes are responsible for many interactions (especially those involving rifampicin and isoniazid) during drug biotransformation (metabolism) in the liver and/or intestine. Generally, rifampicin is an enzyme inducer and isoniazid acts as an inhibitor. The agents interacting significantly with rifampicin include anticoagulants, anticonvulsants, anti-infectives, cardiovascular therapeutics, contraceptives, glucocorticoids, immunosuppressants, psychotropics, sulphonylureas and theophyllines. Isoniazid interacts principally with anticonvulsants, theophylline, benzodiapines, paracetamol (acetaminophen) and some food. Fluoroquinolones can have absorption disturbance due to a variety of agents, especially the metal cations. Other important interactions of fluoroquinolones result from their enzyme inhibiting potential or pharmacodynamic mechanisms. Geriatric and immunocompromised patients are particularly at risk of drug interactions during treatment of their tuberculosis. Among the latter, patients who are HIV infected constitute the most important group. This is largely because of the advent of new antiretroviral agents such as the HIV protease inhibitors and the non-nucleoside reverse transcriptase inhibitors in the armamenterium of therapy. Compounding the complexity of drug interactions, underlying medical diseases per se may also contribute to or aggravate the scenario. It is imperative for clinicians to be on the alert when treating tuberculosis in patients with difficult co-morbidity requiring polypharmacy. With advancement of knowledge and expertise, it is hoped that therapeutic drug monitoring as a new paradigm of care can enable better management of these drug interactions.

AIDS-Related Opportunistic Infections↗
PubMedDate not supplied

Sepsis syndrome induced by tuberculous perforation of the esophagus.

Perforation of the esophagus induced by tuberculosis with no evidence of HIV infection is an extremely unusual presentation of the disease. We report on a 41-year-old man presenting with an esophageal perforation who developed a sepsis syndrome characterized by multiple organ dysfunction. The perforation was covered endoscopically with a tube, the patient recovered from cardiovascular, renal and pulmonary dysfunction under intensive care treatment, including antimycobacterial therapy. In response to endoscopic and medical treatment the size of the lesion decreased and disappeared 56 days after diagnosis. The patient could be discharged 2 months after admission and remained asymptomatic after a 12 month follow-up examination.

Adult↗
PubMed1992

The role of surgery in treating pleuropulmonary suppurative disease--review of 77 cases managed at Queens Hospital Center between 1986 and 1989.

Despite the generally salutary experience in recent years of managing suppurative pleuropulmonary disease, empyemas and lung abscesses have persisted and increased in incidence in hospitals such as Queens Hospital Center that serve large numbers of the socioeconomically disadvantaged. This study documents the etiology, clinical presentation, treatment, and treatment results of suppurative pleuropulmonary disease at Queens Hospital Center, which serves a large segment of the urban poor, many of whom are black. Results indicate that contributory or antecedent etiologic factors include a history of prior disease (specifically pneumonia, lung abscess, obstructive lung disease, pulmonary neoplasia, and tuberculosis); a predisposition to constitutional or immunologic deficiencies (specifically, alcoholism, anemia/malnutrition, drug abuse, and acquired immunodeficiency syndrome [AIDS]); conditions contributing to tracheobronchial aspiration (specifically, alcoholism and seizure disorders); and a miscellaneous group such as prior surgery, cardiovascular disease, and sepsis syndrome. The patients in this study were young with maximal incidence occurring in the third to fifth decades of life. Patients were predominantly male (75%) and black (66%). There were 18 deaths (23%), with sepsis being the cause in 10 (56%). Most surgical interventions were conservative, ie, bronchoscopies (48), thoracenteses (43), and tube thoracotomies (39). Thirty-one open thoracotomies were performed for drainage, decortication, or pulmonary resection. The surgical mortality was three cases or 5% of the patients who underwent surgery. The designated incidence of proven AIDS in this series (29%) was low, undoubtedly because many patients refused testing, and the multiple gram-positive and gram-negative infections that were seen did not conform to the Centers for Disease Control criteria for diagnosis and case reporting for AIDS.(ABSTRACT TRUNCATED AT 250 WORDS)

Adult↗
PubMed1994

[Systemic dysfunctions in patients with tuberculous spondylitis and their clinical significance for surgical treatment].

The paper provides the results of studies into the pathophysiological mechanisms of respiratory and cardiovascular dysfunctions in patients with tuberculous spondylitis complicated by spinal marrow disorders. It also shows their clinical value at various stages of surgical treatment. The authors shows it necessary to perform a multi-modality rehabilitative therapy by monitoring the functions in the postoperative period, which is aimed at recovering functions of vital viscera and systems of the body, as well as locomotor functions.

Adult↗
PubMed1993

Risk factors for physical disability in an aging cohort: the NHANES I Epidemiologic Followup Study.

Successful improvement in health in our increasingly aged population will depend in substantial part on reduction of age specific disability levels. In turn, the epidemiologic model suggests that this requires identification of risk factors, development of intervention models, and testing of these models. We attempted to identify risk factors for physical disability among 4,428 50-77-year-olds using baseline data collected in the first National Health and Nutrition Examination Survey (NHANES I) (1971-1975) linked to disability data collected 10 years later in the NHANES I Epidemiologic Followup Study. Results of forward stepwise linear regression analysis showed that the major characteristics contributing to greater disability (explaining at least 1% of the variability in scores) were older age at baseline, less nonrecreational activity, arthritis history, less education, female sex, and greater body mass index at age 40. Other factors associated with greater disability included a history of asthma, cardiovascular disease, abnormal urine test, less recreational activity, higher sedimentation rate, rheumatic fever history, lower caloric intake, positive musculoskeletal findings, histories of polio and allergies, lower family income, elevated blood pressure, lower serum albumin, history of tuberculosis, glucose in the urine, and histories of hip or spine fracture, chronic pulmonary disease, and kidney disease.

Adult↗
PubMed1980

Cardiovascular disease in Papua New Guinea.

The chest X-ray films of 251 patients with cardiovascular lesions, collected in the major hospitals of Papua New Guinea, were reviewed. Cor pulmonale (18%) and rheumatic heart disease (16%) were the predominant cardiac disorders, and cor pulmonale was the most common cause of cardiac failure (58%). Cardiomegaly or cardiac failure of unknown cause, possibly due to cardiomyopathy or myocarditis, made up 9% of the group and may be more important than has been thought previously. Aortic-arch calcification typical of atheroma was present in 21% of the patients, and is thus quite common, even though ischaemic heart disease remains very rare (1%). More than half of the patients with aortic atheroma had chronic lung disease, and though this could be explained by the coincidental frequency of both conditions, the possibility of an association or link in pathogenesis between them deserves further consideration. Anaemia was a common cause of cardiac enlargement (14%), and sometimes led to cardiac failure. Only 16 patients had hypertension (essential in 10 patients and renal in six), and this may indicate a change from the previously reported predominance of renal hypertension in Papua New Guinea towards a more equal incidence of the two conditions. Aneurysms of unknown cause were encountered in three fairly young patients. They had some resemblance to the aneurysms in arteritis of obscure origin described in Africa. There were also two dissecting aneurysms and one syphilitic aneurysm of the aorta. Congenital lesions (8%), pericarditis due to various causes (including tuberculosis), bacterial endocarditis (in four patients with rheumatic heart disease), and miscellaneous conditions made up the remainder of the series.

Adolescent↗
PubMed1995

KEYNOTE ADDRESS OF THE SEVENTH INTERNATIONAL CONFERENCE ON THE HEALTH OF CHINESE IN NORTH AMERICA: Health Status of Chinese Americans: Challenges and Opportunities.

PURPOSE. This paper is based on the author's keynote address given at the Seventh International Conference on the Health Problems of Chinese in North America. METHODS. The author/speaker reviewed the literature related to Chinese American health problems within the context of the broader demographic and aggregated health data reported on Asian Americans and Pacific Islanders. FINDINGS. In addition to background demographic statistics provided on Chinese Americans, the author/speaker focused on two categories of diseases: (1) communicable diseases; and (2) chronic diseases because of the greater availability of data on these categories. Communicable diseases from which Chinese Americans appear to suffer disproportionally are tuberculosis and hepatitis B. Infection with the hepatitis B virus also makes Chinese Americans much more susceptible to chronic liver diseases including cancer. Chinese also suffer disproportionally more from nasopharyngeal cancer; because of higher than average adult male smoking rates, these men can be expected to suffer disproportionally from a future epidemic of lung cancer cases. Unhealthy acculturation patterns in food consumption point towards changing profiles of cardiovascular morbidity and mortality as well as higher rates of dietary related cancers. OBSERVATIONS. Rather than conclusions, observations of the current health status of Chinese Americans were offered. Four measures that organizations such as the Chinese medical societies and Chinese American health professionals can pursue to advance the health status of Chinese Americans, particularly in the area of heaslth policy, are: (1) voting; (2) collecting data on health status; (3) writing for professional journals; and (4) being active in policy development. KEY WORDS. Chinese Americans; health status; tuberculosis; hepatits B; cancer; diet; acculturation; smoking

Journal Article↗