The safety of morphine in patients with acute heart failure: A systematic review and meta-analysis

Molecular mechanisms involved in therapeutic effects of natural compounds against cisplatin-induced cardiotoxicity: a review

Cisplatin is a widely used chemotherapeutic agent for the treatment of various cancers. However, the clinical use of cisplatin is limited by its cardiotoxic side effects. The primary mechanisms implicated in this cardiotoxicity include mitochondrial dysfunction, oxidative stress, inflammation, and apoptotic. Numerous natural compounds (NCs) have been introduced as promising protective factors against cisplatin-mediated cardiac damage. The current review summarized the potential of various NCs as cardioprotective agents at the molecular levels. These compounds exhibited potent antioxidant and anti-inflammatory effects by interaction with the PI3K/AKT, AMPK, Nrf2, NF-κB, and NLRP3/caspase-1/GSDMD pathways. Generally, the modulation of these signaling pathways by NCs represents a promising strategy for improving the therapeutic index of cisplatin by reducing its cardiac side effects.

The recent advance and prospect of natural source compounds for the treatment of heart failure

Heart failure is a continuously developing syndrome of cardiac insufficiency caused by diseases, which becomes a major disease endangering human health as well as one of the main causes of death in patients with cardiovascular diseases. The occurrence of heart failure is related to hemodynamic abnormalities, neuroendocrine hormones, myocardial damage, myocardial remodeling etc, lead to the clinical manifestations including dyspnea, fatigue and fluid retention with complex pathophysiological mechanisms. Currently available drugs such as cardiac glycoside, diuretic, angiotensin-converting enzyme inhibitor, vasodilator and β receptor blocker etc are widely used for the treatment of heart failure. In particular, natural products and related active ingredients have the characteristics of mild efficacy, low toxicity, multi-target comprehensive efficacy, and have obvious advantages in restoring cardiac function, reducing energy disorder and improving quality of life. In this review, we mainly focus on the recent advance including mechanisms and active ingredients of natural products for the treatment of heart failure, which will provide the inspiration for the development of more potent clinical drugs against heart failure.

Effects of MIdazolam versus MOrphine in acute cardiogenic pulmonary edema and chronic obstructive pulmonary disease: An analysis of MIMO trial

AIMS

Chronic obstructive pulmonary disease (COPD) is an important comorbidity in heart failure. The MIMO trial showed that patients with acute cardiogenic pulmonary edema (ACPE) treated with midazolam had fewer serious adverse events than those treated with morphine. In this post hoc analysis, we examined whether the presence/ absence of COPD modifies the reduced risk of midazolam over morphine.

METHODS

Patients >18 years old clinically diagnosed with ACPE and with dyspnea and anxiety were randomized (1:1) at emergency department arrival to receive either intravenous midazolam or morphine. In this post hoc analysis, we calculated the relative risk (RR) of serious adverse events in patients with and without COPD. Calculating the CochranMantel-Haenszel interaction test, we evaluated if COPD modified the reduced risk of serious adverse events in the midazolam arm compared to morphine.

RESULTS

Overall, 25 (22.5%) of the 111 patients randomized had a history of COPD. Patients with COPD were more commonly men with a history of previous episodes of heart failure, than participants without COPD. In the COPD group, the RR for the incidence of serious adverse events in the midazolam versus morphine arm was 0.36 (95%CI, 0.1-1.46). In the group without COPD, the RR was 0.44 (95%CI, 0.22-0.91). The presence of COPD did not modify the reduced risk of serious adverse events in the midazolam arm compared to morphine (p for interaction =0.79).

CONCLUSIONS

The reduced risk of serious adverse events in the midazolam group compared with morphine is similar in patients with and without COPD.

Signal of harm in morphine use in adults with acute pulmonary oedema: A rapid systematic review

BACKGROUND

Heart failure affects nearly 65 million people globally, resulting in recurrent hospital admissions and substantial healthcare expenditure. The use of morphine in the management of acute pulmonary oedema remains controversial, with conflicting guidance and significant variation in practice. Synthesised evidence is needed to inform standard treatment guidelines and clinical practice.

OBJECTIVE

To determine whether morphine should be used in the treatment of acute pulmonary oedema (APE) in adults.

METHODS

A rapid review of systematic reviews of randomised controlled trials or observational studies, and then randomised controlled trials, was conducted searching three electronic databases (PubMed, Embase, Cochrane Library) and one clinical trial registry on 12 February 2022. We used a prespecified protocol following Cochrane rapid review methods and aligned to the National Standard Treatment Guidelines and Essential Medicines List methodology. We first considered relevant high-quality systematic reviews of randomised controlled trials or observational studies, then (if required) randomised controlled trials to inform time-sensitive or urgent evidence requests, clinical practice, policy, or standard treatment guidelines.

RESULTS

We identified four systematic reviews of observational studies. The two most relevant, up-to-date, and highest-quality reviews were used to inform evidence for critical outcomes. Morphine may increase in-hospital mortality (odds ratio (OR) 1.78; 95% confidence interval (CI) 1.01 - 3.13; low certainty of evidence; six observational studies, n=151 735 participants), resulting in 15 more per 1 000 hospital deaths, ranging from 0 to 40 more hospital deaths. Morphine may result in a large increase in invasive mechanical ventilation (OR 2.72; 95% CI 1.09 - 6.80; low certainty of evidence; four observational studies, n=167 847 participants), resulting in 45 more per 1 000 ventilations, ranging from 2 more to 136 more. Adverse events and hospital length of stay were not measured across reviews or trials.

CONCLUSION

Based on the most recent, relevant and best-available quality evidence, morphine use in adults with APE may increase in-hospital and all-cause mortality and may result in a large increase in the need for invasive mechanical ventilation compared to not using morphine. Recommending against the use of morphine in pulmonary oedema may improve patient outcomes. Disinvesting in morphine for this indication may result in cost savings, noting the possible accrued benefits of fewer patients requiring invasive ventilation and management of morphine-related side-effects.

Safety of benzodiazepines in patients with acute heart failure: A propensity score-matching study

AIM

Benzodiazepines (BZDs) are one of the most used drugs to control symptoms in patients with acute heart failure (HF). However, the evidence on its safety is inconclusive. The objective was to describe the characteristics of patients admitted for HF and treated with BZDs and to assess the relationship of this treatment and mortality.

PATIENTS AND METHODS

We performed a cross-sectional, multicentre (74 Spanish hospitals), cohort study. Patients admitted for HF were divided depending on whether they were treated with BZDs or not. Propensity score analysis matched patients in both groups in a 1:1 manner according to different factors. The primary outcome was mortality at day 7. Secondary outcomes were mortality at days 30 and 180, as well as readmissions and emergency room visits at 180 days.

RESULTS

We included 1855 patients: 639 (34.4%) had prescribed BZDs treatment versus 1216 (65.6%) who had not been treated. Patients receiving BZDs had advanced heart disease, severe symptoms, need more HF intensive treatment and higher mortality. After propensity matching 381 balanced paired cases were included in each group. Treatment with BZDs was not associated with greater risk of mortality at day 7 of index hospitalization (7.6% vs 5.2%, adjusted OR 1.49, 95% CI 0.83-2.68, p = 0.186). There were also no differences between groups in terms of mortality at day 30 and 180, readmissions or visits to the emergency room.

CONCLUSIONS

Our data support that benzodiazepines could be safely used for improving symptoms. in patients admitted for acute HF in terms of short-medium term mortality.

Effect of opioids for breathlessness in heart failure: a systematic review and meta-analysis

BACKGROUND

For the treatment of breathlessness in heart failure (HF), most textbooks advocate the use of opioids. Yet, meta-analyses are lacking.

METHODS

A systematic review was performed for randomised controlled trials (RCTs) assessing effects of opioids on breathlessness (primary outcome) in patients with HF. Key secondary outcomes were quality of life (QoL), mortality and adverse effects. Cochrane Central Register of Controlled Trials, MEDLINE and Embase were searched in July 2021. Risk of bias (RoB) and certainty of evidence were assessed by the Cochrane RoB 2 Tool and Grading of Recommendations Assessment, Development and Evaluation criteria, respectively. The random-effects model was used as primary analysis in all meta-analyses.

RESULTS

After removal of duplicates, 1180 records were screened. We identified eight RCTs with 271 randomised patients. Seven RCTs could be included in the meta-analysis for the primary endpoint breathlessness with a standardised mean difference of 0.03 (95% CI -0.21 to 0.28). No study found statistically significant differences between the intervention and placebo. Several key secondary outcomes favoured placebo: risk ratio of 3.13 (95% CI 0.70 to 14.07) for nausea, 4.29 (95% CI 1.15 to 16.01) for vomiting, 4.77 (95% CI 1.98 to 11.53) for constipation and 4.42 (95% CI 0.79 to 24.87) for study withdrawal. All meta-analyses revealed low heterogeneity (I2 in all these meta-analyses was <8%).

CONCLUSION

Opioids for treating breathlessness in HF are questionable and may only be the very last option if other options have failed or in case of an emergency.

PROSPERO REGISTRATION NUMBER

CRD42021252201.

Integrating Palliative Care into the Management of Heart Failure with Reduced Ejection Fraction: A Practice Pearl

Heart failure with reduced ejection fraction is a progressive, undulating syndrome with an unpredictable illness course featuring intermittent symptom exacerbations and periods of stability. The progressive, variable trajectory of the illness burdens patients with myriad threats to physical, emotional, and spiritual functioning, quality of life and complex treatment decisions. Integrating palliative care is a recommended best practice for heart failure management; however, confusion persists about what palliative care comprises in the context of heart failure.

Modification of Cardiovascular Drugs in Advanced Heart Failure: A Narrative Review

Advanced heart failure (HF) is a complex entity with a clinical course difficult to predict. However, most patients have a poor prognosis. This document addresses the modification of cardiovascular drugs in patients with advanced HF that are not candidates to heart transplantation or ventricular assist device and are in need of palliative care. The adjustment of cardiovascular drugs is frequently needed in these patients. The shift in emphasis from life-prolonging to symptomatic treatments should be a progressive one. We establish a series of recommendations with the aim of adjusting drugs in these patients, in order to adapt treatment to the needs and wishes of each patient. This is frequently a difficult process for patients and professionals, as drug discontinuing needs to balance treatment benefit with the psychological adaption to having a terminal illness. We encourage the use of validated assessment tools to assess prognosis and to use this information to take clinical decisions regarding drug withdrawal and therapeutic changes. The golden rule is to stop drugs that are harmful or non-essential and to continue the ones that provide symptomatic improvement.

Impact of morphine use in acute cardiogenic pulmonary oedema on mortality outcomes: a systematic review and meta-analysis

Background:

Morphine is commonly used in the management of acute cardiogenic pulmonary oedema. The European Society of Cardiology (ESC) and National Institute for Health and Care Excellence (NICE) do not recommend the routine use of opioids in acute heart failure (AHF) due to dose-dependent side effects. However, the effect of morphine remains unclear. Our study aims to investigate the link between morphine use in acute cardiogenic pulmonary oedema and mortality.

Methods:

PubMed and Embase databases were searched from inception to October 2021. All studies were included (randomized, non-randomized, observational, prospective and retrospective). The references for all the articles were reviewed for potential articles of interest with no language restrictions. Studies looking at in-hospital mortality along with other outcomes were chosen. The Newcastle–Ottawa scale was used to appraise the studies. Heterogeneity was assessed using I². Meta-analysis was conducted using the Review Manager Software version 5.3 (The Nordic Cochrane Centre, The Cochrane Collaboration, 2014), by computing odds ratios (ORs) for pooled in-hospital mortality and clinical outcomes.

Results:

Six observational studies out of the 73 publications identified were eligible for the meta-analysis giving a total sample size of 152,859 (mean age 75, males 48%). Of these, four were retrospective analyses. The use of morphine in acute cardiogenic pulmonary oedema was associated with an increased rate of in-hospital mortality [OR = 2.39, confidence interval (CI) = 1.13 to 5.08, p = 0.02], increased need for invasive ventilation (OR = 6.14, CI = 5.84 to 6.46, p < 0.00001), increased need for non-invasive ventilation (OR = 1.85, CI = 1.45 to 2.36, p < 0.00001) and increased need for vasopressors/inotropes (OR = 2.93, CI = 2.20 to 3.89, p < 0.00001).

Conclusion:

Based on the observational studies, morphine use in acute cardiogenic pulmonary oedema is associated with worse outcomes. Further randomized controlled trials are needed to confirm any causative effect of morphine on mortality rates in acute cardiogenic pulmonary oedema.