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[Problems and possible errors in monitoring drug side effects at the hospital (author's transl)].

Special problems and possible errors in drug monitoring were discussed by analyzing three cases of hospital treated patients. The first one showed how easily side effects of drug can be falsely diagnosed and treated as a drug independent complicating disease. Furthermore, the active principle of the drug had to be differentiated from several potentially inducing substances. In the second case, the wrong diagnosis of a drug induced illness caused an intermission of a vital basic therapy. The lateron developing signs were interpreted as symptoms of the primary disease but they might also have been caused by drugs given later. For the third case it should be pointed out that side effects can be provoked during long- or short-term treatment by changing the diet. For drug monitoring it is therefore equally necessary to watch the drugs as well as the living circumstances.

Adult

Health beliefs of hypertensive patients in a family medicine residency program.

This paper presents the results of a survey of the hypertensive patient population in a university family medicine practice to determine health beliefs, patient perceptions of the severity of their condition, stated levels of compliance to drug regimens, frequency of drug side effects, and frequency of physician discussions of drug side effects and diet. Health beliefs were then associated with diastolic hypertension and increase in medication dosage over a four-month period. Results of the survey sharpen the focus of patient education efforts by the family physician on specific attitudes, beliefs, and treatment issues which are most appropriate for the hypertensive patient. The physician may improve his/her management of hypertensive patients by: (1) anticipating prevalent myths and misconceptions which patients have concerning hypertension; (2) alleviating patient anxiety by stressing that control of blood pressure decreases the likelihood of complications; (3) effectively communicating to each patient the current status of his/her condition at each visit; and (4) initiating discussion of side effects through direct questioning for those effects most frequently seen.

Adult

Butorphanol and morphine: a double-blind comparison of their parenteral analgesic activity.

The analgesic effects of butorphanol tartrate and morphine sulfate were compared in 127 patients judged to have moderate to severe pain following major operations. The study was double-blind, and the drugs were given IM at several dosage levels. Scores for pain intensity and relief, as well as pain-intensity difference, were determined at 30, 60 and 120 minutes after medication, then were analyzed by a parallel-line assay method in a modified computer program. The analysis indicated butorphanol tartrate to be 7 times as potent as morphine sulfate. Peak analgesic effects were obtained at 60 minutes with both drugs. Side effects were minimal in degree and incidence. Neither butorphanol nor morphine induced any changes in blood pressure, pulse rate, or respiratory rate. These data, along with those from studies elsewhere, suggest that butorphanol is a safe, potent, and effective analgesic agents, with probably a low potential for inducing drug dependence.

Adolescent

Comparison of the effects of bromocriptine and levodopa in Parkinson's disease.

The effects of bromocriptine and levodopa were compared in a blind trial in 18 patients with Parkinson's disease. Optimal doses of the two drugs were given in identical capsules: there was no significant difference between the therapeutic effects. There were wide individual differences in response to the two drugs. Side effects were more common with bromocriptine because of side effects.

Aged

Acute bronchial and cardiovascular effects of oral pirbuterol and metaproterenol.

The acute pulmonary and cardiovascular effects of pirbuterol dihydrochloride 10 mg and 15 mg, a new orally active beta 2-selective sympathomimetic agent, were compared with those of placebo and metaproterenol 20 mg over a period of seven hours in 24 stable asthmatics. Pirbuterol 15 mg and metaproterenol 20 mg had a comparable onset of action (30 min) and magnitude of peak bronchodilator effect (29 +/- 5 mean % increase in FEV1) but the bronchodilatation following pirbuterol was longer lasting (seven hours) than that following metaproterenol (three hours). Pirbuterol 15 mg also caused a greater magnitude and duration of bronchodilatation than pirbuterol 10 mg. No effect on heart rate or PEP/LVET ratio was noted with either drug. Side effects reported following each of the active agents were comparable in frequency and were almost always mild. These findings indicate that pirbuterol is an effective bronchodilator with a relatively long duration of action, definite beta 2-adrenergic specificity and insignificant toxicity when administered in a single dose.

Acute Disease

Four new anti-inflammatory drugs: responses and variations.

Ninety patients with rheumatoid arthritis completed a double-blind crossover trial comparing fenoprofen, ibuprofen, ketoprofen, and naproxen. Fenoprofen and naproxen were slightly more effective than the other two drugs but there were striking individual variations in response. Groups of patients could be identified who preferred each of the four drugs. The commonest side effects were those related to the upper gastrointestinal tract; these showed individual variation and seldom occurred with more than one or two of the drugs. Side effects were least common with ibuprofen and naproxen. Since naproxen combined greater effectiveness with a lower incidence of side effects it must be regarded as the first choice among these drugs. It may be necessary to try several drugs before finding the right one for a particular patient.

Anti-Inflammatory Agents

Paradoxical non-catalytic kinase functions are driven by inhibitor-induced displacement of autoinhibitory domains.

ATP-competitive kinase inhibitors represent one of the largest classes of targeted anti-cancer drugs. While their primary mechanism is to block catalytic activity, they can also trigger paradoxical phenotypic effects that cannot be explained by catalytic inhibition alone. These observations point to a hidden layer of drug action that modulates non-catalytic kinase functions via changes in kinase conformation and protein-protein interactions (PPIs). Here, we developed a multimodal proteomics approach combining limited proteolysis coupled mass spectrometry on affinity-purified samples (AP-LiP-MS), AP-MS, and proximity labeling-MS to map inhibitor-induced conformation and PPI changes. We show that inhibitor binding causes structural rearrangements in the autoinhibitory domains (AIDs) of all tested kinases, consistent with a transition to an open, active-like kinase conformation. These structural shifts drive distinct kinase-protein interaction changes that control non-catalytic functions: sequestration of AMPK by inhibited CAMKK2 blocks phosphorylation by other kinases, CHEK1 inhibition causes dissociation from the mitochondrial protein CLPB and leads to mitochondrial fragmentation, and structural changes in inhibited PRKCA trigger rapid relocalization to cell junctions. Thus, we identify the ATP-binding site as a major organizing center of kinase conformation and interaction. Our work suggests that these on-target, off-mechanism effects are likely to occur in other kinases as well, and provides the analytical framework to systematically characterize a frequently overlooked phenomenon highly relevant for understanding drug side effects to guide the development of novel therapeutics.

Protein Kinase Inhibitors

[Side effects of antibiotics in patients with thermal burns].

The possibilities of antibacterial therapy in the clinics of burn diseases has at present decreased because of increasing microflora resistance to antibiotics. This phenomenon is one of the most often causes of antibacterial drug side effects in burn patients. For control of infections complications in burn patients which are most often lethal it is necessary to use biologically active subtance, such as prodigiozan and lysozime in addition to the directed antibiotic therapy. The use of specific antitoxic antistaphylococcal drugs, such as antistaphylococcal plasma and antistaphylococcal gamma-globulin in combination with the antibiotics of the direct action provided effective control of infectious complications and sepsis of staphylococcal genesis in burn patients. Decamine proved to be effective along with the usual use of nystatin in cases with dysbacteriosis as a result of the antibiotic side effects. In the patients treated with decamine the sings of candidosis disappeared by the 5th--7th day. Therefore, for decreasing the side effects of antibiotics in the clinics of burn patients it is expedient to use antibiotics in combination with the biologically active and immune preparations which increases the efficacy of antibiotic therapy, impfoves the treatment results and decreases the antibiotic side effects.

Anti-Bacterial Agents

Bromocriptine treatment of acromegaly.

Bromocriptine at a dose of 7.5-30 mg/day was given to 12 acromegalics for 6 mo. Mean serum growth hormone (GH) levels during a glucose tolerance test (GTT) were significantly lowered by the drug. In four patients the serum GH response during a GTT was suppressed to normal (i.e. less than or equal to 5 mlU/liter). If bromocriptine had not brought the serum GH response to a GTT to normal at a dose of 20 mg/day, this effect was not achieved by raising the dose to 30 mg/day. Bromocriptine was effective for the duration of treatment. On discontinuing therapy there was an increase in serum GH levels. No obvious clinical changes in the acromegalic features were noted. One patient with impaired glucose tolerance and one with established diabetes had normal glucose tolerance while on bromocriptine and another two patients with impaired glucose tolerance showed no obvious changes while on the drug. Side effects were minor. X-rays of the pituitary fossa before starting and at the end of treatment showed no significant change. We conclude that although bromocriptine is the most promising form of medical treatment for acromegaly to date, it is fully effective only in a minority of patients.

Acromegaly

A behavior analysis approach to high-rate myoclonic seizures.

Epilepsy represents a serious medical and social problem. In the majority of cases, seizures are successfully managed by a variety of anticonvulsant medications, even though these drugs may potentiate significant physical and developmental side effects. A small group of studies to date have offered evidence that behavioral procedures can successfully manage some seizure disorders and are particularly desirable treatment choices when seizure disorders are intractable to drug management or when drug side effects are to be avoided. The present case adds to this small but growing group of studies in that it demonstrates the use of behavioral procedures in the analysis and treatment of high-rate myoclonic seizures. Seizures were evaluated on a hospital ward and in a controlled experimental setting. The data indicated a variable rate of seizures across days and activities and a reduction of seizure frequency in the controlled setting when time-out was made contingent on seizures. A program of contingent rest' was then applied on the hospital ward that demonstrated a reduction in myoclonic seizure frequency and the apparent prevention of several grand mal episodes. An observer calibration procedure showed high correspondence between behaviorally and physiologically recorded seizures. A discussion of issues in behavioral medicine research follows.

Behavior Therapy

The influence of coating agents on the electrode circuit in electroretinography.

In electroretinography, coating agents are usually applied to improve the contact between the contact-lens electrode and the eye. These agents influence electroretinographic responses. In this experimental study we show that the characteristic properties of the electrode circuit are not influenced by the coating agent. Thus we conclude that these coating agents influence the eye itself. The mechanism of this interaction may be physical, or may be an unknown pharmacologic drug side effect.

Cellulose

Prospective comparison of cefoxitin and cefazolin in infections caused by aerobic bacteria.

Intravenous cefazolin and cefoxitin were compared in a prospective randomized trial in infections where the suspected pathogen was expected to be susceptible to both antibiotics. In the cefazolin group (12 patients) the diagnosis was pneumonia in 4, including 2 with pneumococcal bacteremia, soft tissue infection in 5, Staphylococcus aureus bacteremia in 1, acute pyelonephritis in 1, and disseminated gonococcal infection in 1. In the cefoxitin group (10 patients) the diagnosis was pneumonia in 4, including 2 with pneumococcal bacteremia, soft tissue infection in 4, acute pyelonephritis in 1, and disseminated gonococcal infection in 1. In the cefazolin group receiving an evaluable course of therapy, a good clinical response was seen in 10 of 11 patients, and a bacteriological response was seen in 5 of 7. Cefazolin failed to eradicate S. aureus bacteremia in 1 patient and S. aureus in a skin ulcer of another patient. All 10 cefoxitin patients had good clinical and bacteriological responses, but in 1 patient S. aureus colonization of a postoperative wound recurred after discontinuation of the drug. Side effects in both groups included skin rash, phlebitis, and elevation of the serum alkaline phosphatase. Both cefoxitin and cefazolin appeared effective in infections caused by susceptible aerobic pathogens with the possible exception of S. aureus, although all 11 strains of S. aureus isolated in this study were susceptible in vitro to both antibiotics. Cefoxitin appeared to be equivalent to cefazolin in efficacy and occurrence of side effects.

Adult

Fenoterol in asthma.

Fenoterol is a beta 2-sympathomimetic bronchodilator. In a double-blind cross-over trial in 17 asthmatic patients with reversible airway obstruction inhalation of both fenoterol (0.4 mg) and terbutaline (0.5 mg) produced a statistically significant greater increase in peak expiratory flow rate than did placebo. The magnitude and duration of response to fenoterol exceeded that to terbutaline in the doses used. The patients' subjective assessment also suggested the relief of their symptoms with the active drugs. Side effects were minimal.

Adult

[Results of a long-term clomiphene citrate therapy in women with normogonadotropic menstrual disturbanes (author's transl)].

A total of 72 pregnancies was achieved in 59 women with menstrual cycle disturbances (WHO Type II) by administration of clomiphene. 27 of these pregnancies (34.7%) occurred only after more than three courses of cloimphene. A secondary classification of the patients was based on the symptomatic severity of the menstrual disturbance. Clomiphene (100 mg) was administered on the fifth day after the onset of menstruation for five days, whereby in one or two cases up to 19 courses had to be given. The group consisted of women who had rejected HMG-HCG therapy because of the possibility of multiple pregnancy. 59 pregnancies went to full term; 2 tubal pregnancies and 11 cases of miscarriage were recorded. The commencement of pregnancy was evaluated and the time of ovulation and the length of the luteal phase determined in women requiring up to three courses of clomiphene and those requiring over three courses. The investigation demonstrates that clomiphene therapy can be successful even after more than six courses of the drug. Side effects are minimal.

Adult

Problems in family practice: the suicidal patient.

Suicidal patients are common in family practice. Risk factors can alert the family physician to persons at unusual risk. Demographic factors, especially those revealing changing social status, recent loss, intentionality, lethality, past history, and high-risk groups, can be rapidly assessed. Viewing suicide as a final common pathway of system dysfunction at any or all major levels-biologic, psychologic, sociocultural-leads to an appreciation of the ubiquitous nature of passive or active "self murder" impulses. Persons depressed for any significant length of time for whatever reasons are potentially suicidal. Thus, the "typical" depression is suicidal but so are persons whose depression is related to drug side effects, primary illness effects, to living in a dysfunctional family system, or to normal grief. Diagnosis requires inquiry about the depth of the patient's depression pain. Treatment takes into account the aforementioned risk factors, plus interventions appropriate to the malfunctioning system.

Age Factors

A literature survey of the potentially adverse effects of the drugs commonly prescribed for the elderly.

Part I: Hard data concerning adverse drug reactions are notoriously difficult to obtain. Some of the problems arise because of: --patient variables including age, sex, genetic differences, and current illness. --multiple drug use, continuation of smoking, and use of alcohol. --variations in dose, duration of treatment, and route of administration. --some effects are not reported but many reported effects are not truly due to the drug indicated. Nevertheless, we need to be aware of potential adverse reactions. Our ability to recognize drug side effects will be improved if we have some idea which kinds of reaction may occur. Part I deals with the analgesics, sedatives, laxatives, antacids, antidiabetic agents, antihypertensives and cardiovascular drugs. Potential systemic and ocular adverse reactions are listed.

Aged