Infective endocarditis in heroin addicts: epidemiological observations and some unusual cases

Current management of infectious complications in the injecting drug user

The diagnosis and management of infectious complications associated with injection drug use (IDU) are among some of the more challenging aspects of working with substance abusing populations. As the population of injection drug users age, we expect the number and severity of these complications to increase. Commonly seen infections, such as bacterial endocarditis and bacterial infections of bones, joints, and soft tissue, are now frequently complicated by concurrent immunodeficiency. Parenterally and sexually transmitted viral hepatitis is responsible for significant IDU morbidity and mortality. The human leukemia/lymphoma virus types I and II are increasing in prevalence in the IDU with uncertain long-term clinical effects. Immune dysfunction has been described in the IDU for decades, but the impact of host immune compromise on the transmission and the course of HIV-1 has yet to be fully appreciated. The integration of the treatment of substance abuse and its concurrent psychiatric disorders with the management of infectious complications, including immunodeficiency, promises to improve patient compliance with possible savings of overall medical costs.

Infective endocarditis in opiate addicts: analysis of 80 cases studied at necropsy

Eighty opiate addicts were studied at necropsy. Fifty-nine patients had anatomic evidence of active infective endocarditis (IE); 11 had healed IE; and 10 had both. Of the 80 patients, the first episode of IE involved a single right-sided cardiac valve in 24 patients (30%); both a right- and a left-sided valve in 13 patients (16%); a single left-sided valve in 33 patients (41%); and both left-sided valves in 10 patients (13%). Of the 320 cardiac valves in the 80 patients, 103 were sites of vegetations, an average of 1.3 of the 4 valves. Of the 80 patients, the tricuspid valve was infected in 35 (44%), mitral in 34 (43%), aortic in 32 (40%) and pulmonic in 2 (3%). Of the 103 infected cardiac valves, the infection caused sufficient damage to cause dysfunction in 70 (68%): in 28 (88%) of 32 infected aortic valves; in 22 (63%) of 35 infected tricuspid valves; in 19 (56%) of the 34 infected mitral valves; and in 1 of the 2 infected pulmonic valves. Of the 80 patients, 57 (71%) had sufficient valvular damage to cause valvular dysfunction. Of the 80 patients, gross examination of the valves at necropsy indicated that the infected valve almost certainly had been anatomically normal in 65 patients (81%) and abnormal in 15 patients (19%) before the onset of IE. Of the 65 patients with previously anatomically normal valves, 86 (33%) of their 260 cardiac valves were sites of infection (average 1.3 valves/patient); of the 15 patients with infection superimposed on a previously abnormal valve, the infection in each involved previously abnormal valves (21 in the 15 patients) or 17 (28%) of their 60 cardiac valves were sites of infection (average 1.1 valve/patient). Of the 15 patients with abnormal cardiac valves before the infection, 7 had congenitally bicuspid aortic valves and 8 had diffuse fibrous thickening of the mitral valve typical of rheumatic heart disease with (6 patients) or without (2 patients) diffuse fibrous thickening of tricuspid aortic valves. Of the 80 patients, 42 (53%) died during their first episode of active IE, 17 (21%) underwent operative excision with or without valve replacement during the active IE, and in 21 patients (26%) the first episode of active IE healed. In 10 of the latter 21 patients, active IE recurred and was fatal. A total of 19 patients had cardiac valve excision with or without replacement, 17 during active IE and 2 after healing.(ABSTRACT TRUNCATED AT 250 WORDS)

Admissions of drug addicts to a general hospital: a retrospective study in the northern district of Glasgow

Medical and surgical admissions of drug addicts to Stobhill Hospital, Glasgow in the period 1980-1984 were reviewed. Admission numbers, which totalled 123, rose markedly over the period of the study, particularly in the final year. The mean age of addicts was 21 years. Ninety-two per cent abused heroin but many abused combinations of drugs. Inadvertent narcotic overdosage was the commonest diagnosis amongst medical admissions followed by deep venous thrombosis. A small number of cases of staphylococcal endocarditis presented particular problems in diagnosis and management. The commonest reason for surgical admission was abscess formation. Whilst 85% of addicts showed markers of past infection with hepatitis B, chronic carriage of surface antigen occurred in only 10%. Few addicts had withdrawal symptoms although the practice of narcotic and/or tranquilliser prescribing varied. Many admissions were of short duration with 36% ending in patients taking their own discharge. Only 16% of addicts were notified to the Home Office.

Nonocular manifestations of parenteral drug abuse

The nonocular manifestations of parenteral drug abuse are presented to familiarize the ophthalmologist with this ever growing, medical and psychosocial problem. The ophthalmologist, like other primary care physicians, may be the first professional to encounter these patients whose substance abuse may lead to a wider spectrum of physical and psychiatric illness. The variety, history, and manifestations of abused substances are discussed.