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Self poisoning with maprotiline was studied in 41 patients (43 episodes) consecutively admitted to an intensive care unit. Thirty five patients had taken more than one drug or alcohol. Fifteen patients were in coma grade III or IV; 17 patients were still not conscious after 24 hours in the intensive care unit. Among six patients given ventilation the mean duration of ventilation in the five who recovered was 36 hours. Three patients had a cardiorespiratory arrest, and one patient died. Twenty eight patients had a QRS interval of 100 ms or more, and 15 patients had seizures. In six patients seizures were precipitated by physostigmine. Cardiotoxicity after overdosage of maprotiline is equal to if not greater than that found after overdosage of conventional tricyclic antidepressants. Overdosage of maprotiline is more often associated with seizures than overdosage with tricyclic antidepressants. Physostigmine further increases the risk of seizures and should not be used in cases of overdosage of maprotiline. 相似文献
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J. B. Spooner 《BMJ (Clinical research ed.)》1995,310(6986):1072-1073
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OBJECTIVE--To review trends in deliberate self poisoning and self injury (attempted suicide) over 15 years (1976-90) on the basis of general hospital referrals. DESIGN--Prospective data collection by computerised monitoring system. SETTING--Teaching general hospital. SUBJECTS--All patients aged 15 and over (n = 9605) referred to the hospital after episodes (n = 13,340) of deliberate self poisoning or self injury. MAIN OUTCOME MEASURES--Rates based on population of Oxford city; changes in substances used for self poisoning; history and repetition of attempts; and rates of admission to the hospital and of referral to the psychiatric service. RESULTS--Attempted suicide rates for women declined during the late 1970s and early 1980s but increased again during the late 1980s. Those for men remained relatively steady throughout the period. Highest mean annual rates occurred in women aged 15-19 (711/100,000) and in 20-34 year old men (334/100,000). The proportion of overdoses with paracetamol increased from 14.3% (125/873) in 1976 to 42% (365/869) in 1990 (chi 2 for trend = 481, p less than 0.01). Throughout the period the proportions of referred patients admitted to hospital and of those attempting suicide for the first time (over two thirds) did not decrease. Annual rates of repetition of attempts by women declined from 15.1% (257/1700) in 1976-8 to 11.9% (161/1356) in 1987-9 (chi 2 for trend = 7.8, p less than 0.01). Lower repetition rates occurred in women admitted to hospital and referred to the psychiatric service (431/4585, 9.4%) than in those not referred (42/235, 17.9%; chi 2 = 17.2, p less than 0.0001). CONCLUSIONS--Rates of attempted suicide declined in the 1970s and early 1980s, in women, but there are probably at least 100,000 hospital referrals a year in England and Wales because of this problem. Prevention of paracetamol self poisoning requires urgent attention, and psychosocial assessment should be conducted with as many of those who attempt suicide as possible. 相似文献
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A P Hall E B Doberstyn C Karnchanachetanee S Samransamruajkit B Laixuthai E J Pearlman R M Lampe C F Miller P Phintuyothin 《BMJ (Clinical research ed.)》1977,1(6077):1626-1628
Patients with falciparum malaria were studied in Thailand, an area of known chloroquine resistance. The patients were unselected and some had severe malaria, and they were randomly assigned to one of two sequential regimes. A short course of quinine (average 4 doses, equivalent to 2 g base) followed by a single dose of pyrimethamine-sulfadoxine (Fansidar) cured 92% of patients (36 out of 39), while a short course of quinine followed by a single 1-5-dose of mefloquine cured all of the 35 patients who could be followed up. Gastrointestinal side effects were minimal if at least 12 hours elapsed between the last dose of quinine and the mefloquine. Sequential quinine and mefloquine is the most effective treatment for patients with chloroquine-resistant falciparum malaria, including those with severe or complicated disease. Mefloquine, however, is not commercially available, and the similar regimen using Fansidar is almost as effective. 相似文献
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Bhattarai MD 《BMJ (Clinical research ed.)》2000,320(7236):711; author reply 712-711; author reply 713
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Trimble M 《BMJ (Clinical research ed.)》2000,320(7236):712; author reply 712-712; author reply 713
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In rats the induced enhancement of glutamic-pyruvic transaminase and leucine aminopeptidase activity in plasma to 5.2 mMol CC14/kg (per 05) is potentiated after repeated drawing of blood. The DL50 of CC14 following oral application in rats after loss of blood is reduced significant comparatively to controls and to animals with increased content of haemoglobin in blood. 相似文献
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Friend virus complex (FV), which comprises replication-competent Friend murine leukemia virus (FMuLV) plus replication-defective spleen focus-forming virus (SFFV), induces a multistage erythroleukemia. We have examined the role of replication-competent helper virus in the early and late stages of FV disease by replacing FMuLV, the native helper, with Akv, the endogenous ecotropic MuLV of AKR mice. SFFVP/FRE, an established fibroblast line nonproductively infected with the polycythemic strain of SFFV, was superinfected with FMuLV or with Akv. Although supernatants from these cells showed similar titers in the XC plaque assay, supernatants from Akv-infected SFFVP/FRE cells showed 100- to 5,000-fold less activity than did those from FMuLV-infected cells with respect to spleen focus induction in vivo. Since virions isolated from these two supernatants contained similar ratios of SFFV to helper virus genomic RNA, it did not appear that the difference was due to a relative inability of Akv to package SFFV. Although FMuLV- and Akv-rescued SFFV are equally infectious in a mouse fibroblast cell line (NIH 3T3), FMuLV-rescued SFFV was far more efficient in inducing erythroid bursts in cultured primary bone marrow cells. Adding Akv to preparations of FMuLV-rescued SFFV did not significantly interfere with burst induction. Helper-free SFFV induced 50- to 500-fold more spleen foci when coinjected with FMuLV than it did with Akv. Helper virus also affected mortality rates that reflect the late stage of the disease. When FMuLV- or Akv-rescued SFFV was injected into NIH Swiss mice at dosage levels adjusted to give equal numbers of spleen foci, all mice receiving FMuLV-rescued SFFV developed splenomegaly and died, whereas no mice receiving Akv-rescued SFFV died or developed detectable splenomegaly. When FMuLV was coinjected with Akv-rescued SFFV, the mortality rate rose from 0 to 100%. Injection of helper-free SFFV alone did not induce mortality, but coinjection of helper-free SFFV with FMuLV resulted in 100% mortality. Thus, the helper virus used to rescue SFFV plays at least a quantitatively important role in the early stage of FV disease and a crucial role in the late stage of the disease in vivo. 相似文献