Nonthrombocytopenic Purpura Associated Sequentially with Nifedipine and Diltiazem

1992 ◽  
Vol 26 (9) ◽  
pp. 1089-1090 ◽  
Author(s):  
Margaret Kuo ◽  
Nancy Winiarski ◽  
Serafino Garella
Keyword(s):  
Adverse Effect ◽  
Channel Blocker ◽  
Case Reports ◽  
Data Extraction ◽  
Data Sources ◽  
Cutaneous Vasculitis ◽  
Laboratory Studies ◽  
Pertinent Literature ◽  
Data Synthesis ◽  
Purpuric Rash

OBJECTIVE: To report the case of a patient who developed nonthrombocytopenic purpura sequentially following the administration of nifedipine and diltiazem. DATA SOURCES: Case reports, MEDLINE review of pertinent literature, and review of relevant studies. DATA EXTRACTION: Data were extracted from direct patient observation and review of laboratory studies and published reports. DATA SYNTHESIS: Nonthrombocytopenic purpura secondary to cutaneous vasculitis is a known, although rare, adverse effect of nifedipine. It has not been reported in association with diltiazem. We report the case of a 75-year-old woman in whom a purpuric rash demonstrated by biopsy to be attributable to cutaneous vasculitis developed in the course of nifedipine therapy. The rash disappeared after discontinuation of the drug; however, it recurred when diltiazem therapy was initiated. CONCLUSIONS: Nonthrombocytopenic purpura may be associated with diltiazem as well as with nifedipine. When this adverse effect occurs following administration of a calcium-channel blocker, caution is advised in using other agents of the same class.

Foscarnet-Associated Penile Ulcerations

1994 ◽  
Vol 10 (5) ◽  
pp. 215-217
Author(s):  
Richard M. Cadle ◽  
Richard J. Hamill
Keyword(s):  
Adverse Effect ◽  
Case Reports ◽  
Human Herpesvirus ◽  
Antiviral Agent ◽  
Review Literature ◽  
Data Sources ◽  
Data Synthesis ◽  
Manual Search ◽  
Search Index ◽  
Genital Hygiene

Objective: To report a case of foscarnet-induced penile ulcerations and review literature related to this adverse effect. Data Sources: Case reports and review articles identified by a computerized search (MEDLINE) and manual search (Index Medicus). Data Synthesis: Foscarnet is a pyrophosphate analog antiviral agent that is approved by the Food and Drug Administration for treating cytomegalovirus retinitis in patients with AIDS. It also is used investigationally for other indications and human herpesvirus infections. Adverse effects include nephrotoxicity, anemia, ionized calcium abnormalities, and penile ulcerations. The majority of penile ulcers have developed within two weeks following initiation of foscarnet therapy with dosages of 180–200 mg/kg/d. Most cases required discontinuation of foscarnet to resolve the penile lesions. A postulated mechanism for this effect is inflammatory contact dermatitis from exposure to urine with elevated concentrations of foscarnet. We report a case of foscarnet-induced penile ulcerations that resolved after discontinuing this agent. Conclusions: Foscarnet can induce penile ulcerations. Increased awareness of this phenomenon, along with meticulous genital hygiene and urination practices, are required for its prevention.

Isoniazid-Associated Psychosis: Case Report and Review of the Literature

1993 ◽  
Vol 27 (2) ◽  
pp. 167-170 ◽  
Author(s):  
Karen A. Pallone ◽  
Morton P. Goldman ◽  
Matthew A. Fuller
Keyword(s):  
Case Report ◽  
English Language ◽  
Case Reports ◽  
Data Extraction ◽  
Data Sources ◽  
Review Of The Literature ◽  
Data Synthesis ◽  
Medline Search ◽  
Study Selection ◽  
Language Literature

Objective To describe a case of isoniazid-associated psychosis and review the incidence of this adverse effect. Data Sources Information about the patient was obtained from the medical chart. A MEDLINE search of the English-language literature published from 1950 to 1992 was conducted and Index Medicus was manually searched for current information. Study Selection All case reports describing isoniazid-associated psychosis were reviewed. Data Extraction Studies were evaluated for the use of isoniazid, symptoms of psychosis, onset of symptoms, and dosage of isoniazid. Data Synthesis The case report is compared with others reported in the literature. The incidence of isoniazid-associated psychosis is rare. Conclusions The mechanism of isoniazid-associated psychosis is uncertain. It appears that isoniazid was associated with the psychosis evident in our patient and in the cases reviewed.

Weight Gain Associated with Cinnarizine

1992 ◽  
Vol 26 (7-8) ◽  
pp. 928-930 ◽  
Author(s):  
Joaquin Navarro-Badenes ◽  
Inocencia Martínez-Mir ◽  
Vicente Palop ◽  
Elena Rubio ◽  
Francisco J. Morales-Olivas
Keyword(s):  
Weight Gain ◽  
Food Intake ◽  
Randomized Trials ◽  
Case Reports ◽  
Data Extraction ◽  
Data Sources ◽  
Initial Weight ◽  
Data Synthesis ◽  
Previous Level ◽  
The Mean

OBJECTIVE: To report four cases of cinnarizine-induced weight gain. DATA SOURCES: Case reports from a local obesity center and review articles. DATA EXTRACTION: Data were abstracted from spontaneous comments made by patients to one of the authors, who was a doctor at the clinic, and reviewed by the remaining authors. DATA SYNTHESIS: We reviewed the cases of four women, aged 50–57 years without endocrine or metabolic pathologies, that showed weight gain associated with the intake of cinnarizine for one to two years. No other drugs usually were administered during the period in which the women gained weight, although in two cases cinnarizine was associated with dihydroergocristine in the same medicine (Clinadil). The mean weight increase was 6.25 kg (range 4–10). The increases do not appear to be related to whether the patients' initial weight was ideal or excessive. The weight gain was always associated with increased appetite and food intake. One patient discontinued cinnarizine treatment and her weight returned to its previous level. CONCLUSIONS: Cinnarizine is a piperazine derivative used in the treatment of vertigo and in the prophylaxis of migraine. In contrast to related drugs, data about cinnarizine are scarce because randomized trials of cinnarizine have been inconclusive. Our observations indicate that cinnarizine may cause weight gain, as observed with other drugs in the same class.

Ciprofloxacin-Induced Psychosis

1992 ◽  
Vol 26 (7-8) ◽  
pp. 930-931 ◽  
Author(s):  
Roy R. Reeves
Keyword(s):  
Preventive Measures ◽  
Case Reports ◽  
Data Extraction ◽  
Data Sources ◽  
Aminobutyric Acid ◽  
Gamma Aminobutyric Acid ◽  
Data Synthesis ◽  
Receptor Sites ◽  
The Brain ◽  
Mild Headache

OBJECTIVE: To report a case of ciprofloxacin-induced psychosis and to discuss occurrence rates, risk factors, possible etiologies, preventive measures, and treatment courses for this adverse reaction. DATA SOURCES: Case reports and review articles identified by MEDLINE. DATA EXTRACTION: Data from pertinent published sources were reviewed and abstracted. DATA SYNTHESIS: A 49-year-old man developed symptoms of severe psychosis concomitant with ciprofloxacin (250 mg bid) treatment. Central nervous system effects secondary to ciprofloxacin treatment are uncommon and usually consist only of minor dizziness or mild headache, although rare occurrences of seizures and hallucinations have been reported. The mechanism by which ciprofloxacin causes these adverse effects is not fully understood. It has been suggested that quinolones may produce an epileptogenic effect by inhibiting the binding of gamma-aminobutyric acid to its receptor sites in the brain. There is yet no explanation for the occurrence of hallucinations or psychosis. CONCLUSIONS: Caution should be exercised when using ciprofloxacin in the treatment of patients with personality abnormalities or symptoms of psychosis.

scholarly journals Prioritising recommendations following analyses of adverse events in healthcare: a systematic review

2020 ◽  
Vol 9 (4) ◽  
pp. e000843
Author(s):  
Kelly Bos ◽  
Maarten J van der Laan ◽  
Dave A Dongelmans
Keyword(s):  
Systematic Review ◽  
Adverse Events ◽  
Data Extraction ◽  
Data Sources ◽  
Cochrane Library ◽  
High Quality ◽  
Data Synthesis ◽  
Study Selection ◽  
Personal Opinion ◽  
User Friendly

PurposeThe purpose of this systematic review was to identify an appropriate method—a user-friendly and validated method—that prioritises recommendations following analyses of adverse events (AEs) based on objective features.Data sourcesThe electronic databases PubMed/MEDLINE, Embase (Ovid), Cochrane Library, PsycINFO (Ovid) and ERIC (Ovid) were searched.Study selectionStudies were considered eligible when reporting on methods to prioritise recommendations.Data extractionTwo teams of reviewers performed the data extraction which was defined prior to this phase.Results of data synthesisEleven methods were identified that are designed to prioritise recommendations. After completing the data extraction, none of the methods met all the predefined criteria. Nine methods were considered user-friendly. One study validated the developed method. Five methods prioritised recommendations based on objective features, not affected by personal opinion or knowledge and expected to be reproducible by different users.ConclusionThere are several methods available to prioritise recommendations following analyses of AEs. All these methods can be used to discuss and select recommendations for implementation. None of the methods is a user-friendly and validated method that prioritises recommendations based on objective features. Although there are possibilities to further improve their features, the ‘Typology of safety functions’ by de Dianous and Fiévez, and the ‘Hierarchy of hazard controls’ by McCaughan have the most potential to select high-quality recommendations as they have only a few clearly defined categories in a well-arranged ordinal sequence.

Recovery and Return to Activity Following Exertional Heat Stroke: Considerations for the Sports Medicine Staff

2007 ◽  
Vol 16 (3) ◽  
pp. 163-181 ◽  
Author(s):  
Brendon P. McDermott ◽  
Douglas J. Casa ◽  
Susan W. Yeargin ◽  
Matthew S. Ganio ◽  
Lawrence E. Armstrong ◽  
...  
Keyword(s):  
Data Extraction ◽  
Heat Stroke ◽  
Data Sources ◽  
Exertional Heat Stroke ◽  
Data Synthesis ◽  
Residual Symptoms ◽  
Study Selection ◽  
Initial Care ◽  
Type Data ◽  
Return To Activity

Objective:To describe the current scientific evidence of recovery and return to activity following exertional heat stroke (EHS).Data Sources:Information was collected using MEDLINE and SPORTDiscus databases in English using combinations of key words, exertional heat stroke, recovery, rehabilitation, residual symptoms, heat tolerance, return to activity, and heat illness.Study Selection:Relevant peer-reviewed, military, and published text materials were reviewed.Data Extraction:Inclusion criteria were based on the article’s coverage of return to activity, residual symptoms, or testing for long-term treatment. Fifty-two out of the original 554 sources met these criteria and were included in data synthesis.Data Synthesis:The recovery time following EHS is dependent on numerous factors, and recovery length is individually based and largely dependent on the initial care provided.Conclusion:Future research should focus on developing a structured return-to-activity strategy following EHS.

Linearity in Dose—Response from Zinc Lozenges in Treatment of Common Colds

1995 ◽  
Vol 11 (3) ◽  
pp. 110-122 ◽  
Author(s):  
George A Eby
Keyword(s):  
Dose Response ◽  
Common Cold ◽  
Data Extraction ◽  
Cold Treatment ◽  
Electric Circuit ◽  
Zinc Ion ◽  
Data Sources ◽  
Data Synthesis ◽  
Zinc Speciation

Objective: To test the hypothesis that major variations in daily zinc ion availability (ZIA) between lozenge formulations caused greatly differing results and to describe the biologically closed electric circuit between the mouth and nose. Data Sources: Data sources included clinical and in vitro reports, zinc speciation computations, and unpublished data from the original researchers and manufacturers. Data Extraction: Data were extracted to determine the composition and usage of lozenges and resultant changes in common cold duration. Lozenge ZIA values were determined from Zn2+ ion concentrations and oral contact time. Data Synthesis: Data synthesis disclosed that lozenges releasing Zn2+ ions at physiologic pH (positive ZIA values) shortened the duration of colds. Conversely, lozenges that released negatively charged zinc complexes (ZnLN−) at physiologic pH (negative ZIA values) lengthened the duration of colds. ZIA 100 lozenges reduced the duration of colds by 7 days. ZIA 0 lozenges had no effect. ZIA −55 lozenges lengthened the duration of colds by 4.4 days. Conclusions: The hypothesis is valid that major variations in ZIA from different zinc lozenge formulations used in clinical trials caused greatly differing results. A linear dose-response relationship exists between ZIA values of zinc lozenges and changes in duration of common colds. In agreement with in vitro activity, Zn2+ ions from lozenges inhibit replication of rhinoviruses, induce interferon release, and stabilize cell membranes in common cold treatment. Linearity in dose-response shows efficacy against common cold duration from clinically untested lozenges to be predictable on the basis of readily determined ZIA values of experimental lozenges.

Drug-Induced Yawning—A Review

2011 ◽  
Vol 45 (10) ◽  
pp. 1297-1301 ◽  
Author(s):  
Edna Patatanian ◽  
Nancy Toedter Williams
Keyword(s):  
Case Reports ◽  
Data Extraction ◽  
Background Information ◽  
Drug Induced ◽  
Data Synthesis ◽  
Search Terms ◽  
Dopaminergic Agents ◽  
Study Selection ◽  
Physiologic Function ◽  
Induction Agents

Objective: To review the current literature on drug-induced yawning. Data Sources: Literature was accessed through MEDLINE/PubMed (1996-July 2011), International Pharmaceutical Abstracts (1997-July 2011), and EMBASE, using the search terms yawning, drug-induced yawning, and adverse drug reactions. Study Selection and Data Extraction: Relevant clinical trials and case reports were selected and included to present background information. Bibliographies of all relevant articles were reviewed for additional citations. Data Synthesis: Yawning is a common stereotype behavior with unknown physiologic function that occurs in most vertebrates and humans as early as 15 weeks of intrauterine life. Yawning Is under the control of several neurotransmitters and neuropeptides, Including dopamine, serotonin, oxytocin, and acetylcholine. Among drugs, antidepressants, opioids, dopaminergic agents, benzodiazepines, and induction agents are the main pharmacologic classes associated with yawning. Conclusions: Yawning is rarely a serious adverse reaction and is not frequently listed in the drug summary. Most available data are based on case reports, small studies, and older literature. Clinicians should be aware of the agents commonly triggering this behavior.

Transporters and Their Impact on Drug Disposition

2005 ◽  
Vol 39 (6) ◽  
pp. 1097-1108 ◽  
Author(s):  
Paul M Beringer ◽  
Richard L Slaughter
Keyword(s):  
Patient Outcomes ◽  
Drug Disposition ◽  
Data Extraction ◽  
The Body ◽  
Pertinent Literature ◽  
Data Synthesis ◽  
Medline Search ◽  
Manual Search ◽  
Study Selection ◽  
The Impact

OBJECTIVE: To review the recent advances in knowledge about human transporters and their effect on drug disposition. DATA SOURCES: A MEDLINE search (1996–March 2005) was performed to identify pertinent literature on human transporters and their impact on drug disposition. Additional articles were identified from a manual search of the references of retrieved articles. STUDY SELECTION AND DATA EXTRACTION: Based on the identified studies, data were extracted on the impact of transporters on drug absorption, distribution, and elimination. DATA SYNTHESIS: The pharmacokinetic disposition of drugs is known to be influenced by metabolic enzymes, kidney function, and transporters. Recent research on human transporters has greatly advanced our understanding of their diversity and importance in drug disposition. In particular, members of the multidrug resistance family of transporters (MDR, MRP) are present in organs and tissues throughout the body and are known to significantly affect the absorption, distribution, and elimination of commonly prescribed drugs. A growing number of studies now demonstrate that alterations in transporter function as a result of drug interactions or genetic polymorphisms may explain a significant portion of the variability in treatment response for certain drugs. CONCLUSIONS: Human transporters contribute significantly to the pharmacokinetic disposition of drugs. Knowledge of substrates, inducers, and inhibitors of these transporters is necessary to ensure optimal patient outcomes.

Psychotropic Drug-Related Rhabdomyolysis

1992 ◽  
Vol 26 (7-8) ◽  
pp. 948-954 ◽  
Author(s):  
Donna M. Jermain ◽  
M. Lynn Crismon
Keyword(s):  
Adverse Effect ◽  
Psychotropic Drug ◽  
English Language ◽  
Psychiatric Patients ◽  
Case Reports ◽  
Data Extraction ◽  
Drug Induced ◽  
Individual Factor ◽  
Intramuscular Injections ◽  
Muscle Necrosis

OBJECTIVE: The objective of this review is to discuss the pathophysiology and potential etiologies of rhabdomyolysis in psychiatric patients, with an emphasis on psychotropic drug-induced rhabdomyolysis. DATA SOURCES: References were obtained through an on-line search of MEDLINE, using English-language and human literature only. STUDY SELECTION: Because the topic is a potential drug-induced adverse effect, no controlled studies are available. Most of the literature are case reports and series of case reports. DATA EXTRACTION: The quality of case reports was assessed using the Food and Drug Administration guidelines for assessing the causality of a potential adverse drug reaction. DATA SYNTHESIS: The results of this review are based on qualitative data and indicate that rhabdomyolysis in psychiatric patients can be from multiple etiologies, including agitation, dehydration, and intramuscular injections, as well as an adverse effect of psychotropic medications. Although the deficiencies of this type of data are recognized, it is the only type of data often available to assess the etiology and causality of an uncommon adverse event. CONCLUSIONS: Rhabdomyolysis in psychiatric patients can be caused by many factors, both drug- and non—drug-related. Rhabdomyolysis is more likely to occur when patients are faced with a combination of risk factors. When combinations of factors are present (e.g., aggression and restraints, intramuscular injections, and extrapyramidal effects), or when muscle trauma from an individual factor is sufficiently traumatic, muscle necrosis may occur to the point that rhabdomyolysis ensues.

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