scholarly journals Efficacy of Ivabradine versus β-Blockers for Heart Rate Reduction during Computed Tomography Coronary Angiography: A Meta-Analysis of Randomized Controlled Trials

Cardiology ◽  
2016 ◽  
Vol 135 (3) ◽  
pp. 133-140 ◽  
Author(s):  
Shuang Qiu ◽  
Shaobo Shi ◽  
Haiqin Ping ◽  
Sanfeng Zhou ◽  
Hui Wang ◽  
...  

Objective: To quantify the efficacy of pretreatment with ivabradine compared to β-blockers before computed tomography coronary angiography (CTCA) via a meta-analysis of clinical randomized controlled trial data. Methods: We conducted a search for randomized controlled trials of pretreatment with ivabradine compared to β-blockers before CTCA in Medline, PubMed, Embase, SCI/SSCI/A&amp;HCI, SAS Publishers, Web of Science, and the Cochrane Central Register. The Jadad quality score of the included studies, and the mean difference (MD) in heart rate reduction, were indicators of efficacy. RevMan 5.2 and Stata 12.0 software were used for the meta-analysis. Results: Eight studies involving a total of 1,324 patients were included in the final analysis. The results showed that ivabradine was significantly more effective at improving the heart rate of patients achieving the target heart rate (<65 bpm) during CTCA (OR 5.02; 95% CI 3.16-7.98, p < 0.00001, I2 = 20%). A comparison of efficacy between ivabradine and β-blockers showed a statistically significant effect of ivabradine on heart rate reduction during CTCA (MD -4.39; 95% CI −4.80 to −3.99, p < 0.00001, I2 = 0%). Ivabradine also led to a significant reduction in heart rate prior to CTCA (MD −5.33; 95% CI −10.26 to −0.39, p = 0.03, I2 = 92%). In terms of the total reduction in heart rate during CTCA, significant differences were noted between the ivabradine group and the β-blocker group (MD 2.64; 95% CI 1.25-4.02, p = 0.0002, I2 = 0%). The mean percentage reduction in heart rate in the ivabradine group was significantly higher than that in the β-blocker group (MD 7.18; 95% CI 5.64-8.72, p < 0.00001, I2 = 43%). Ivabradine had no significant effect on either systolic blood pressure (BP) (MD 11.41; 95% CI 6.43-16.40, p < 0.00001, I2 = 85%) or diastolic BP (MD 1.79; 95% CI -0.00 to 3.58, p = 0.05, I2 = 56%). Conclusion: Compared to β-blockers for heart rate reduction, ivabradine is a potentially attractive alternative for patients undergoing CTCA.

Author(s):  
Brent Egan ◽  
John Flack ◽  
Sofia Lombera ◽  
Mehul Patel

Objectives: This study was conducted to examine perceptions, knowledge, and rationale for prescribing β-blockers among physicians who treat patients with hypertension. Methods: In August/September 2016, 103 primary care physicians (PCPs) and 59 cardiologists participated in a 20-minute quantitative, online survey regarding their use and perceptions of β-blockers. Significant between-group differences were examined via t-tests and z-tests. Results: Significantly more cardiologists chose β-blockers as first-line therapy than PCPs (30% vs 17%, P <0.01). Metoprolol and carvedilol were the most commonly prescribed β-blockers. When choosing a β-blocker, cardiologists rated “impact on fatigue and energy” and “arterial vasodilation” as more important treatment features than PCPs ( P <0.05 and P <0.01, respectively). Physicians’ awareness of vasodilation was greater for carvedilol (52% [84/162]) than nebivolol (31%[51/162]). A large proportion of cardiologists and PCPs were unaware that any β-blockers cause weight gain (cardiologists, 34%[20/59]; PCPs, 39%[40/103]) or increased glucose (42% each, cardiologists [25/59], PCPs [43/103]). Overall, physicians associated atenolol and metoprolol with weight gain and clinically relevant changes in glucose, while nebivolol was least associated with either outcome. Only 10% of cardiologists (6/59) and 2% of PCPs (2/103) associated carvedilol with weight gain ( P <0.05). Among β-blocker features, nebivolol was closely associated with: β 1 -selectivity; efficacy in patients aged >60 years; efficacy in African-American patients; and arterial vasodilation. Metoprolol was closely associated with heart rate reduction, and atenolol was associated with heart rate reduction, fatigue, erectile dysfunction, and impact on mood. Physicians had a positive response to using drugs other than metoprolol or atenolol that could lower the risk of new onset diabetes for pre-diabetic or obese patients. Clinical practice guidelines influenced prescribing behaviors more than formulary or performance metrics; continuing medical education and publications were commonly accessed materials for hypertension education. Conclusions: This survey highlights several educational gaps, including differences between PCPs and cardiologists, on the perceptions of β-blockers for hypertension treatment. Future efforts should include physician education on relevant evidence-based differences between β-blockers, given their heterogeneity.


Dermatology ◽  
2020 ◽  
pp. 1-11
Author(s):  
Xinhui Wang ◽  
Wei Feng ◽  
Xufeng Zhao ◽  
Ziyu Liu ◽  
Liang Dong

<b><i>Background:</i></b> To evaluate the efficacy and safety of topical β-blockers in the treatment of superficial infantile hemangiomas (SIH) and mixed infantile hemangiomas (MIH), respectively, and compare the efficacy and safety of topical β-blockers with other interventions. <b><i>Methods:</i></b> The PRISMA guidelines were adhered to. We searched for randomized controlled trials in databases from 2010 to 2018 comparing topical β-blockers with other interventions for infantile hemangiomas. The outcomes evaluated were efficacy and adverse effects. Data analyses were performed using RevMan 5.3. Publication bias was assessed to account for bias in patient selection. <b><i>Results:</i></b> Eleven studies, involving 1,235 patients, were subjected to this meta-analysis. Six studies compared topical β-blockers with other interventions (propranolol, placebo, corticosteroids or pulsed dye laser) in treating SIH, and 5 studies evaluated the efficacy and safety of a topical β-blocker when it was combined with another intervention in treating MIH. A topical β-blocker was discovered to be as effective as oral propranolol in treating SIH (risk ratio, RR, 0.96, 95% confidence interval, CI, 0.91–1.02, <i>p</i> = 0.20, <i>I</i><sup>2</sup> = 0%), and topical β-blockers were more beneficial than placebo, corticosteroids or pulsed dye laser in treating SIH (RR 2.25, 95% CI 1.66–3.05, <i>p</i> &#x3c; 0.00001, <i>I</i><sup>2</sup> = 0%). Topical β-blockers combined with another intervention gave rise to a better clinical response in the treatment of MIH than intervention alone (RR 1.99, 95% CI 1.10–3.60, <i>p</i> = 0.02, <i>I</i><sup>2</sup> = 55%) (standard mean difference 0.80, 95% CI 0.28–1.31, <i>p</i> = 0.002, <i>I</i><sup>2</sup> = 0%). Compared with oral propranolol, topical β-blockers were associated with fewer incidences of adverse effects (RR 0.05, 95% CI 0.01–0.39, <i>p</i> = 0.004, <i>I</i><sup>2</sup> = 0%). No significant difference in adverse effects was found when a topical β-blocker was combined with another intervention in treating MIH (RR 1.01, 95% CI 0.58–1.74, <i>p</i> = 0.98, <i>I</i><sup>2</sup> = 0%). <b><i>Conclusions:</i></b> This meta-analysis provided evidence that topical β-blockers may replace oral propranolol as first-line therapy for SIH and that they are of additive value in treating MIH.


2021 ◽  
pp. 204589402110078
Author(s):  
Lu Yan ◽  
Wence Shi ◽  
Zhi-hong Liu ◽  
Qin Luo ◽  
Zhihui Zhao ◽  
...  

Background: Several studies have suggested that exercise capacity and quality of life are reduced in patients with pulmonary hypertension (PH), and exercise-based rehabilitation can improve exercise capacity and quality of life in patients with PH. The aim of this study is to assess the efficacy and safety of exercise-based rehabilitation in patients with PH through a meta-analysis of randomized controlled trials. Methods: We searched PubMed, Embase, Medline, and the Cochrane Central Register of Controlled Trials up to November 2018. All randomized controlled trials (RCTs) comparing exercise capacity and quality of life between patients undergoing exercise-based rehabilitation and those undergoing non-exercise training were included. Data were extracted separately and independently by two investigators, and discrepancies were arbitrated by the third investigator. We used the random-effects model to analyze the results, the GRADE to assess the risk of bias in the included studies, and I ² statistic to estimate the degree of heterogeneity. Results: Nine RCTs are included, however, only seven RCTs were able to extract data. Including inpatients and outpatients, the total number of participants was 234, most of whom were diagnosed as pulmonary artery hypertension (PAH). The study duration ranged from 3 to15 weeks. The mean six-minute walk distance after exercise training was 51.94 metres higher than control (27.65 to 76.23 metres, n=234, 7 RCTs, low quality evidence), the mean peak oxygen uptake  was 2.96 ml/kg/minute higher (2.49 to 3.43 ml/kg/minute, n=179, 4 RCTs, low-quality evidence) than in the control group . Concluded: Our finding suggest that an exercise-based training program positively influences exercise capacity in patients with PH.


2021 ◽  
Vol 10 (13) ◽  
pp. 2824
Author(s):  
Su-Kiat Chua ◽  
Wei-Ting Lai ◽  
Lung-Ching Chen ◽  
Huei-Fong Hung

Background: The management of hypertension remains suboptimal throughout the world. Methods: We performed a random-effects model meta-analysis of randomized controlled trials to determine the effectiveness and safety of sacubitril/valsartan (LCZ696) for the treatment of high arterial pressure. Relevant published articles from PubMed, Cochrane base, and Medline were examined, and the last search date was December 2020. Only published randomized controlled trials and double-blind studies were selected for further analysis. The mean reductions in systolic blood pressure (msSBP) and diastolic blood pressure (msDBP) in the sitting position, as well as the mean reductions in ambulatory systolic blood pressure (maSBP) and ambulatory diastolic blood pressure (maDBP), were assumed as efficacy endpoints. Adverse events (AEs) were considered as safety outcomes. Results: Ten studies with a total of 5931patients were included for analysis. Compared with placebo, LCZ696 had a significant reduction in msSBP (weight mean difference (WMD) = −6.52 mmHg, 95% confidence interval (CI): −8.57 to −4.47; p < 0.001), msDBP (WMD = −3.32 mmHg, 95% CI: −4.57 to −2.07; p < 0.001), maSBP (WMD = −7.08 mmHg, 95% CI: −10.48 to −3.68; p < 0.001), maDBP (WMD = −3.28 mmHg, 95% CI: −4.55 to −2.02, p < 0.001). In subgroup analysis, only 200 mg and 400 mg LCZ696 showed a significant BP reduction. There was no difference in the AE rate between the LCZ696 and placebo groups (WMD = 1.02, 95% CI: 0.83 to 1.27, p = 0.54). Egger’s test revealed a potential publication bias for msSBP (p = 0.025), but no publication bias for other outcomes. Conclusion: LCZ696 may reduce blood pressure more efficaciously than traditional therapy in hypertensive patients without increasing adverse effects.


2019 ◽  
Vol 11 ◽  
pp. 175628721983836 ◽  
Author(s):  
Jeffrey D. Campbell ◽  
Bruce J. Trock ◽  
Adam R. Oppenheim ◽  
Ifeanyichukwu Anusionwu ◽  
Ronak A. Gor ◽  
...  

Background: The aim of this study was to perform a meta-analysis of randomized controlled trials (RCTs) that evaluate the efficacy of low-intensity extracorporeal shock wave therapy (LiESWT) for the treatment of erectile dysfunction (ED). Materials and methods: A comprehensive search of PubMed, Medline, and Cochrane databases was performed from November 2005 to July 2018. RCTs evaluating efficacy of LiESWT in the treatment of ED were selected. The primary outcomes were the mean difference between treatment and sham patients in the International Index of Erectile Function-Erectile Function (IIEF-EF) domain score 1 month after treatment, and the mean change in IIEF-EF from baseline to 1 month post-treatment. The secondary analysis considered the percentage of men whose erectile hardness score (EHS) changed from <2 at baseline to >3 after treatment. All analyses used a random effects method to pool study-specific results. Results: A total of seven RCTs provided data for 607 patients. The mean IIEF-EF 1 month post-treatment ranged from 12.8 to 22.0 in the treatment group versus 8.17–16.43 in the sham group. The mean difference between the treatment and sham groups at the 1 month follow up was a statistically significant increase in IIEF-EF of 4.23 ( p = 0.012). Overall, five of the seven trials provided data on the proportion of patients with baseline EHS <2 who improved to EHS >3 at 1 month post-treatment. The proportions ranged from 3.5 to 90% in the treatment group versus 0–9% in the sham group and the pooled relative risk of EHS improvement for the treated versus sham group was 6.63 ( p = 0.0095). No significant adverse events were reported. Conclusions: This is the first meta-analysis that evaluates RCTs exploring LiESWT as a treatment modality strictly for ED. This therapeutic strategy appears to be well tolerated with short-term benefits. However further studies exploring specific treatment regimens and long-term outcomes are needed.


2019 ◽  
Vol 51 (08) ◽  
pp. 503-510
Author(s):  
Masoud Khorshidi ◽  
Meysam Zarezadeh ◽  
Alireza Sadeghi ◽  
Alireza Teymouri ◽  
Mohammad Reza Emami ◽  
...  

AbstractRecently, obesity has become a common worldwide concern. Leptin, as an adipocytokine, plays a major role in the etiology of obesity. Prior studies have demonstrated that zinc potentially affects serum leptin levels. However, clinical trials carried out in this regard are not consistent. Therefore, current meta-analysis was conducted to ascertain the actual effect of zinc supplementation on serum leptin levels in adults. Databases of PubMed, SCOPUS, and Google Scholar were methodically searched to identify relevant articles up to April 2018. Clinical trials that examined the effect of zinc supplementation on serum leptin concentrations as outcome variables in human adults were included. The mean difference (SD) of leptin changes in the intervention and placebo groups were used to calculate the overall effect size. Totally, 663 articles were identified, of which 6 studies were eligible randomized controlled trials (RCTs) with 7 treatment arms. The analysis suggested that zinc supplementation exerts no significant effect on overall serum leptin (WMD: 0.74 ng/ml; 95% CI: −1.39 to 2.87, p=0.49). Nevertheless, sex and duration of intervention seemed to impact the extent of zinc’s influence. In trials with female subjects, zinc consumption led to a significant decrease in serum leptin level (WMD: −1.93 ng/ml; 95% CI: −3.72 to −0.14, p=0.03) as well as trials that lasted for more than 6 weeks (WMD: −1.71 ng/ml; 95% CI: −3.07 to −0.35, p=0.01), in comparison to the control group. Zinc supplementation did not significantly improve leptin concentrations, but it may result in a decreased circulating leptin level in studies with a duration of more than 6 weeks especially among females.


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