Pleural Effusions: Pathophysiology and Management

1994 ◽  
Vol 28 (7-8) ◽  
pp. 894-903 ◽  
Author(s):  
Carlota O. Andrews ◽  
Mary Lea Gora

OBJECTIVE: To review the pathophysiology and management of pleural effusions, including available agents for pleural sclerosis. DATA SOURCES: A MEDLINE search (1966 to present) was performed that included clinical studies in the English language involving the pathophysiology and management of pleural effusions; references used in those articles were screened for additional published information. STUDY SELECTION: All clinical trials were considered for potential inclusion in the review. DATA SYNTHESIS: Pleural effusion is an accumulation of fluid in the pleural space that results when homeostatic forces that control the flow into and out of the area are disrupted. The management of transudative pleural effusions is primarily directed at treatment of the underlying disease. There are several treatment options for pleural effusions, including chemical pleurodesis. Many of the trials that examine the use of talc, bleomycin, and doxycycline have poorly described study designs and end points, with inconsistent evaluation of patients. Each agent is considered to be generally effective and safe, with fever and pain as the most frequently reported adverse effects. The use of talc requires sterilization, and many clinicians use general anesthesia with instillation, which increases the risk associated with the procedure. Bleomycin is generally safe; however, it should not be used in doses exceeding 40 mg/m2. Only uncontrolled trials support the use of doxycycline; however, it provides an effective, safe, and relatively inexpensive alternative. CONCLUSIONS: Pleural effusions are defined as an accumulation of fluid in the pleural space. Treatment is generally palliative. Intrapleural administration of talc, bleomycin, and doxycycline are effective sclerosing agents for treatment of recurrent, symptomatic pleural effusions. Although the most cost-effective agent has not been determined, doxycycline is an inexpensive alternative to bleomycin, and may have fewer adverse effects than talc.

1992 ◽  
Vol 26 (3) ◽  
pp. 350-353 ◽  
Author(s):  
Dennis F. Thompson ◽  
Marsha A. Raebel ◽  
Hina S. Patel ◽  
Mark D. Peters ◽  
Curtis L. Smith

OBJECTIVE: To review the data describing the use of fluconazole in the treatment of vulvovaginal candidiasis (VVC). DATA IDENTIFICATION: A MEDLINE search of the English-language literature and a bibliographic review of pertinent articles examining the use of fluconazole in the treatment of VVC. STUDY SELECTION AND DATA EXTRACTION: Relevant open and controlled studies reporting on the efficacy, associated adverse effects, or both of fluconazole for the treatment of VVC are reviewed. Appropriate conclusions and/or data are extracted from each article and described. DATA SYNTHESIS: Studies comparing fluconazole with ketoconazole and topical antifungal agents such as clotrimazole and miconazole have shown fluconazole to be equally efficacious with minimal adverse effects. Most of these trials used single-dose fluconazole, which would theoretically lead to a high degree of medication compliance. Fluconazole also has shown promise at diminishing VVC relapse or recurrence, possibly because of more complete vaginal and rectal eradication of Candida species. Pharmacoeconomically, single-dose fluconazole therapy is cost-effective; however, the recent approval of miconazole and clotrimazole by the Food and Drug Administration for over-the-counter use may limit this potential advantage. CONCLUSIONS: Until additional data are available, fluconazole may be considered a treatment alternative for women with VVC who experience frequent relapses or recurrences, or for those who are noncompliant with standard therapy.


1997 ◽  
Vol 13 (2) ◽  
pp. 80-83
Author(s):  
Lisa M Tong ◽  
Kristin R Gericke

Objective: To provide a better understanding of the efficacy and possible adverse effects of topical aminophylline in causing regional fat loss. Data Source: Pertinent English-language literature (1958–1995). Study Selection: Representative articles documenting mechanisms of action and types of drug-induced reactions, as well as treatment options. Data Extraction: Data were extracted only from articles that documented relevant and substantive information backed by clinical studies. Data Synthesis: Topical aminophylline 2% thigh cream has been introduced as a method of treating cellulite, or dimpled thighs and buttocks. The proposed method of action is by increasing local concentration, thereby stimulating lipolysis. Data from two small clinical trials showed that the cream reduced thigh girth and had no known adverse effects. However, adverse dermatologic effects caused by aminophylline have been reported in the past. Conclusions: Topical aminophylline cream appears to be a reasonable option for regional reduction of thigh girth for some people and has not shown any adverse effects. Nevertheless, larger, long-term studies need to be done.


2005 ◽  
Vol 39 (2) ◽  
pp. 284-289 ◽  
Author(s):  
Amy L Pakyz

OBJECTIVE: To review the pharmacology, pharmacokinetics, clinical efficacy, adverse effects, drug interactions and precautions, and dosing recommendations of rifaximin, a new nonabsorbed antimicrobial agent for travelers' diarrhea. DATA SOURCES: A MEDLINE search (1966–July 2004) was conducted to extract human and animal research data in the English language on rifaximin. STUDY SELECTION AND DATA EXTRACTION: Randomized, double-blind, placebo-controlled trials were reviewed and included to evaluate the efficacy of rifaximin in the treatment of travelers' diarrhea. DATA SYNTHESIS: Rifaximin is approved for the treatment of travelers' diarrhea in patients ≥12 years of age with diarrhea caused by noninvasive strains of Escherichia coli. Rifaximin was superior to placebo and trimethoprim/sulfamethoxazole and equivalent to ciprofloxacin in the primary clinical endpoint of the time to the last unformed stool passed. CONCLUSIONS: Rifaximin is a viable alternative to ciprofloxacin for the treatment of travelers' diarrhea. As rifaximin is not systemically absorbed, it offers the advantage of leading to the development of less resistance compared with systemically absorbed antibiotics, in addition to fewer systemic adverse effects and drug interactions. However, the potential for cross-resistance between rifaximin and rifampin, as well as with other classes of antibiotics, is of concern and needs to be elucidated.


2021 ◽  
pp. 106002802110084
Author(s):  
Kristin Waters

Objective To provide an overview of the efficacy and safety of lemborexant in the treatment of insomnia disorder by assessing the currently available literature. Data Sources A literature search of PubMed was performed (2010 to March 2021) using the following search terms: lemborexant, sleep, orexin Study Selection and Data Extraction All relevant English-language studies were reviewed and considered, with a focus on phase 3 trials. Data Synthesis The efficacy and safety of lemborexant in the treatment of insomnia disorder in adults was demonstrated in 2 phase 3 trials. Lemborexant significantly reduced latency to persistent sleep compared with placebo. The first study also demonstrated a significant reduction compared with the active control zolpidem ER. Somnolence and headache were relatively common, but the marked adverse effects associated with other medications commonly used to treat insomnia, such as cognitive and psychomotor impairment and complex sleep-related behaviors, were not observed. Relevance to Patient Care and Clinical Practice Although nonpharmacological therapy is considered first-line treatment for insomnia disorder, pharmacological treatment is most commonly utilized. Lemborexant is a viable pharmacological treatment option for patients who are unable to tolerate the adverse effects associated with the most commonly prescribed medications for insomnia, such as benzodiazepines and sedative-hypnotics (Z drugs). This is especially true for geriatric patients, who may be more sensitive to these adverse effects. Conclusion Lemborexant can be recommended to treat insomnia disorder when pharmacological treatment is warranted. It has demonstrated efficacy in clinical trials and is likely better tolerated than most currently available treatment options.


1997 ◽  
Vol 31 (5) ◽  
pp. 625-632 ◽  
Author(s):  
Bob L Lobo ◽  
William L Greene

OBJECTIVE: TO review the literature that compares Zolpidem with triazolam, with an emphasis on efficacy and safety in humans. DATA SOURCES: Information was retrieved from a MEDLINE search (1983–1996) of the English-language literature using the terms triazolam and zolpidem. STUDY SELECTION: Reports of clinical trials comparing the safety and efficacy of zolpidem and triazolam were included in this review. DATA EXTRACTION: Data were evaluated according to study design, efficacy, and adverse effects. Pertinent information was selected and the data synthesized into a review format. DATA SYNTHESIS: Zolpidem and triazolam have similar pharmacokinetic and pharmacodynamic effects in humans. Clinical trials have shown that usually recommended, equipotent dosages of zolpidem and triazolam do not differ with respect to pharmacokinetics, efficacy, tolerability, residual effects, memory impairment, rebound insomnia, abuse potential, or other adverse effects. CONCLUSIONS: Zolpidem offers no distinct therapeutic advantage over triazolam for the treatment of insomnia.


2000 ◽  
Vol 34 (6) ◽  
pp. 743-760 ◽  
Author(s):  
Brigitte T Luong ◽  
Barbara S Chong ◽  
Dionne M Lowder

OBJECTIVE: To review new pharmacologic agents approved for use in the management of rheumatoid arthritis (RA). DATA SOURCES: A MEDLINE search (1966–January 2000) was conducted to identify English-language literature available on the pharmacotherapy of RA, focusing on celecoxib, leflunomide, etanercept, and infliximab. These articles, relevant abstracts, and data provided by the manufacturers were used to collect pertinent data. STUDY SELECTION: All controlled and uncontrolled trials were reviewed. DATA EXTRACTION: Agents were reviewed with regard to mechanism of action, efficacy, drug interactions, pharmacokinetics, dosing, precautions/contraindications, adverse effects, and cost. DATA SYNTHESIS: Traditional pharmacologic treatments for RA have been limited by toxicity, loss of efficacy, or both. Increasing discoveries into the mechanisms of inflammation in RA have led to the development of new agents in hopes of addressing these limitations. With the development of celecoxib, a selective cyclooxygenase-2 inhibitor, the potential exists to minimize the gastrotoxicity associated with nonsteroidal antiinflammatory drugs. Leflunomide has been shown to be equal to or less efficacious than methotrexate, and may be beneficial as a second-line disease-modifying antirheumatic drug (DMARD). The biologic response modifiers, etanercept and infliximab, are alternatives that have shown benefit alone or in combination with methotrexate. However, they should be reserved for patients who fail to respond to DMARD therapy. Further studies should be conducted to evaluate the long-term safety and efficacy of these agents as well as their role in combination therapy. CONCLUSIONS: Celecoxib, leflunomide, etanercept, and infliximab are the newest agents approved for RA. Clinical trials have shown that these agents are beneficial in the treatment of RA; however, long-term safety and efficacy data are lacking.


1998 ◽  
Vol 7 (1) ◽  
pp. 73-76 ◽  
Author(s):  
LJ Miller ◽  
R Wiles-Pfeifler

OBJECTIVE: To report a case in which propofol was used successfully in an intubated patient on a prolonged basis and to review the literature that discusses long-term infusions (> 7 days) of propofol. METHODS: Information was retrieved from a MEDLINE search of the English-language literature. Reports of clinical trials and case reports that compared the safety and efficacy of long-term propofol and midazolam were included in this review. Information about the study design and the efficacy and adverse effects of the drugs was collected, and the data were synthesized. RESULTS: Clinical reports indicate that a long-term infusion of propofol is comparable in safety and efficacy to a long-term infusion of midazolam. The distinct adverse-effect profile of long-term use of propofol, including hypertriglyceridemia, was evaluated and reported as significant. CONCLUSION: The limited data available suggest that long-term infusion of propofol is a practical alternative to use of standard agents for sedation of intubated patients. Adverse effects such as cardiovascular depression, respiratory depression, and hypertriglyceridemia may limit the routine use of propofol.


1993 ◽  
Vol 27 (2) ◽  
pp. 167-170 ◽  
Author(s):  
Karen A. Pallone ◽  
Morton P. Goldman ◽  
Matthew A. Fuller

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.


1998 ◽  
Vol 14 (5) ◽  
pp. 182-190 ◽  
Author(s):  
Beverly D Abbott ◽  
Cindy M Ippoliti

Objective: To review the literature discussing the use of dexrazoxane (e.g., Zinecard, ICRF-187) to prevent doxorubicin-induced cardiotoxicity. Data Sources: Pertinent English-language reports of studies in humans were retrieved from a MEDLINE search (January 1980-January 1997); search terms included chelating agents, razoxane, dexrazoxane, Zinecard, ICRF-187, ADR-529, and ICRF-159. Study Selection: Representative articles discussing the chemistry, pharmacology, pharmacokinetics, dosing, and administration of dexrazoxane and those discussing clinical trials were selected. Data Extraction: Data were extracted and analyzed if the information was relevant and consistent. Studies were selected for review in the text on the basis of study design and clinical end points. Data Synthesis: Dexrazoxane is a chemoprotective agent developed to prevent cardiac tissue toxicity. Dexrazoxane exerts a cardioprotective effect with some clinically significant toxicities; it may also interfere with the antitumor activity of doxorubicin. Until there are sufficient data to support its use in first-line supportive care therapy, dexrazoxane should be reserved for use in patients responding to doxorubicin-based chemotherapy but who have risk factors for cardiac toxicity or have received a cumulative doxorubicin bolus dose of 300 mg/m2. Conclusions: The management of doxorubicin-induced cardiotoxicity has led to the development of supportive care drugs that specifically counteract the dose-limiting toxicities. Dexrazoxane may not completely eliminate the concern about doxorubicin-induced cardiotoxicity, but it may open new avenues for continuing doxorubicin-based chemotherapy.


2005 ◽  
Vol 21 (6) ◽  
pp. 319-324
Author(s):  
T Kristopher Harrell ◽  
Leigh Ann Ross ◽  
Deborah S King

Objective: To review the literature regarding the past, present, and future pharmacologic agents used in the treatment of obesity. Data Sources: Articles were identified by searching MEDLINE (1966–April 2005) and International Pharmaceutical Abstracts (1970–April 2005) using the key words obesity, antiobesity agents, sibutramine, orlistat, phentermine, and leptin. Additional resources were identified by examining the references of the articles cited. Searches were limited by human subject and English language, but were not limited by time of publication. Study Selection and Data Extraction: Large-scale clinical studies of pharmacologic agents used to treat obesity were selected for this review including agents that were previously available, currently available, and those currently undergoing clinical trials. Data Synthesis: Thyroid hormone was the first antiobesity agent used. Several other agents have been withdrawn from the market due to adverse effects. Current therapies indicated for obesity management include orlistat, sibutramine, and noradrenergic agents. Future therapies include both newer agents and existing agents that are principally used for other indications, mainly diabetes, depression, and seizure disorders. Conclusions: Obesity is a major epidemic in the US, affecting over half of the population. Past experiences with the pharmacologic treatment of obesity have been disappointing and, in some cases, harmful to patients. Current options are available that include noradrenergic agents, orlistat, and sibutramine. However, these agents still have only demonstrated limited efficacy for short-term use plus some undesirable adverse effects. Newer treatment options are being evaluated as new pathways are being identified and other related factors are being discovered.


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