Keeping the plates spinning: a qualitative study of the multifaceted role of caregiving in HFpEF

Abstract Funding Acknowledgements Type of funding sources: Public grant(s) – National budget only. Main funding source(s): National Institutes of Health Research School for Primary Care Research OnBehalf Optimise HFpEF Background Heart failure with preserved ejection fraction (HFpEF) accounts for 50% of all heart failure cases yet remains poorly understood, diagnosed and managed, which can add complexity to the caregiver role. No study to date has explicitly investigated the experiences of informal caregivers of people with HFpEF. Objective The aim of this study was to explore and understand the role and experiences of informal caregivers of people with HFpEF. Methods and design A qualitative study using semi-structured interviews involving caregivers alone, patients alone or caregiver/patient dyads. The interviews were performed as part of a larger programme of research in HFpEF. Participants were recruited from three regions of England. Interviews were transcribed verbatim and analysed thematically. Results 22 interviews were conducted with a total of 38 participants, 17 of which were informal caregivers. Three inter-related themes were identified: (1) ‘spinning plates’ - the multifaceted nature of informal caregiving: household manager, health manager and motivator; (2) ‘the spinning falters’- the barriers to caregiving: lack of HFpEF awareness, information and support, the burden of multimorbidity, caregiver stress and the caregiver’s health status; (3) ‘keeping the plates spinning’- the facilitators of caregiving: being informed, being appreciated, having a champion (a health care professional that is key to managing the patient’s HFpEF), and engaging a wider support network. Conclusions Informal caregivers play an important role in supporting people with HFpEF. The experience of caregiving to people with HFpEF is similar to HFrEF, but complicated by challenges of poor HFpEF information and support, and the burden of multimorbidity. Healthcare providers should assess the needs of informal caregivers as part of patient care in HFpEF. Caregivers and patients would both benefit from improved information and management of HFpEF and associated multi-morbidities. Helping caregivers ‘keep the plates spinning’ will require innovative approaches and coordination across the care continuum.

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Improvement of exercise tests and reduction of heart failure biomarkers in short term follow up after comprehensive rehabilitation program of patients with implanted LVAD

European Heart Journal ◽

10.1093/eurheartj/ehab724.0929 ◽

2021 ◽

Vol 42 (Supplement_1) ◽

Author(s):

T Chwyczko ◽

E Smolis-Bak ◽

L Zalucka ◽

A Segiet-Swiecicka ◽

E Piotrowicz ◽

...

Keyword(s):

Heart Failure ◽

Cardiopulmonary Exercise Test ◽

Rehabilitation Program ◽

Exercise Tests ◽

National Budget ◽

Funding Sources ◽

6Mwt Distance ◽

Galectin 3 ◽

Comprehensive Rehabilitation ◽

Public Grant

Abstract Background There is increasing recognition of the importance of rehabilitating patients after LVAD implantation. The novel method of comprehensive rehabilitation starting directly after LVAD implantation was designed for our LVAD patients population. Aim of the study The study aimed to determine, if novel rehabilitation program improves functional and biochemical parameters in patients after recent LVAD implantation. Study group 37 recent LVAD (22 Heart Mate III, 15 HeartWare) recipients (19–67, mean 58.7 years, 35 men) participated in specially designed rehabilitation program. The program included 4–5 weeks of sationary rehabilitation: supervised endurance training on cycloergometer (5 times per week), resistance training, general fitness exercises with elements of equivalent and coordination exercises (every day). It was followed by individual exercises performed at home. At the beginning and at the end of rehabilitation program the patients performed 6 minute walking test (6MWT), cardiopulmonary exercise test (CPET). Following prognostic biomarkers of heart failure: NT-proBNP, galectin-3 and ST2 were also measured. Results See table 1. Increase of 6MWT distance, higher maximal workload, peak VO2 and upward shift of anaerobic threshold in CPET were observed in all patients. Significant reductions of NTproBNP, ST2 and galectin-3 levels were observed. There were no major adverse events during rehabilitation. Conclusions Comprehensive novel rehabilitation in LVAD recipients is safe and results in significant improvement of functional tests and biomarkers of heart failure. FUNDunding Acknowledgement Type of funding sources: Public grant(s) – National budget only. Main funding source(s): National Center for Research and Development: National grant - STRATEGMED II,

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NICU and postpartum nurse perspectives on involving fathers in newborn care: a qualitative study

BMC Nursing ◽

10.1186/s12912-021-00553-y ◽

2021 ◽

Vol 20 (1) ◽

Author(s):

Katharine W. Buek ◽

Dagoberto Cortez ◽

Dorothy J. Mandell

Keyword(s):

Qualitative Study ◽

Father Involvement ◽

Perinatal Care ◽

Healthcare Providers ◽

Newborn Care ◽

Small Scale ◽

Structured Interviews ◽

Provider Attitudes ◽

Attitudes And Practices ◽

Sense Of Efficacy

Abstract Background Perinatal care nurses are well positioned to provide the education and support new fathers need to navigate the transition to fatherhood and to encourage positive father involvement from the earliest hours of a child’s life. To effectively serve fathers in perinatal settings, it is important to understand the attitudes, beliefs, and behaviors of healthcare providers that may encourage and engage them, or alternatively alienate and discourage them. Methods This qualitative study involved structured interviews with ten NICU and postpartum nurses from hospitals in two large Texas cities. The interview protocol was designed to elicit descriptive information about nurses’ attitudes and beliefs, sense of efficacy and intention for working with fathers, as well as their father-directed behaviors. Nurses were recruited for the study using a purposive sampling approach. Interviews were conducted by telephone and lasted approximately 25 to 35 min. Data were analyzed using a qualitative descriptive approach. Results Overall, study participants held very positive subjective attitudes toward fathers and father involvement. Nevertheless, many of the nurses signaled normative beliefs based on race/ethnicity, gender, and culture that may moderate their intention to engage with fathers. Participants also indicated that their education as well as the culture of perinatal healthcare are focused almost entirely on the mother-baby dyad. In line with this focus on mothers, participants comments reflected a normative belief that fathers are secondary caregivers to their newborns, there to help when the mother is unavailable. Conclusions Nurse attitudes and practices that place mothers in the role of primary caregiver may be interpreted by fathers as excluding or disregarding them. Further research is needed to validate the results of this small-scale study, and to assess whether and how provider attitudes impact their practices in educating and engaging fathers in newborn care.

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Anatomical localization and classification of bundle branch blocks using novel CineECG

EP Europace ◽

10.1093/europace/euab116.039 ◽

2021 ◽

Vol 23 (Supplement_3) ◽

Author(s):

MJ Boonstra ◽

BN Hilderink ◽

ET Locati ◽

FW Asselbergs ◽

P Loh ◽

...

Keyword(s):

Time Interval ◽

Heart Model ◽

National Budget ◽

Funding Sources ◽

Conduction Disorders ◽

Bundle Branch Blocks ◽

Anatomical Localization ◽

The Mean ◽

Diagnostic Work ◽

Public Grant

Abstract Funding Acknowledgements Type of funding sources: Public grant(s) – National budget only. Main funding source(s): This work was supported by the Dutch Heart Foundation Background Ventricular conduction disorders can induce arrhythmias and impair cardiac function. Bundle branch blocks are diagnosed by 12-lead ECG, but discrimination between complete bundle branch blocks, incomplete bundle branch blocks and normal tracings can be challenging. CineECG computes the mean temporo-spatial isochrone (mTSI) trajectory of activation waveforms in a 3D-heart model from 12-lead ECGs. This trajectory represents the mean trajectory of the ventricular electrical activation at any time interval directly related to ventricular anatomy. In Brugada patients, CineECG has localized the terminal components of ventricular depolarization to right ventricle outflow tract (RVOT). Also, for the localization of bundle branch blocks, the region of latest activation contains the most information. Using CineECG, subject specific anatomically related information about the location of bundle branch blocks is obtained. Purpose This study aimed at exploring whether CineECG can improve the discrimination between complete left/right bundle branch blocks (LBBB/RBBB), and incomplete RBBB (iRBBB). Methods We utilized 400 12-lead ECGs from the online Physionet-XL-PTB-Diagnostic ECG Database with a certified ECG diagnosis. The mTSI trajectory was calculated and projected into the anatomical 3D-heart model. Five CineECG classes were established: "Normal", "iRBBB", "RBBB", "LBBB" and "Undetermined", to which each tracing was allocated. We determined the accuracy of CineECG classification with the gold standard diagnosis. Results A total of 391 ECGs were analyzed (9 ECGs were excluded for noise) and 240/266 were correctly classified as "normal", 14/17 as "iRBBB", 55/55 as "RBBB", 51/51 as "LBBB" and 31 as "undetermined". Average mTSI trajectories were calculated according to ECG diagnosis (Figure). The terminal mTSI contained most information about the BBB localization, as that part directs to the site of latest activation (Figure, red arrow). Conclusion CineECG provided the anatomical localization of different BBBs and accurately differentiated between normal, LBBB and RBBB, and iRBBB. CineECG may aid clinical diagnostic work-up, potentially also contributing to the difficult discrimination between normal, iRBBB and Brugada patients. Abstract Figure. Average CineECG trajectories

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Rotational activity presence and its impact in persistent atrial fibrillation follow-up

European Heart Journal ◽

10.1093/eurheartj/ehab724.0375 ◽

2021 ◽

Vol 42 (Supplement_1) ◽

Author(s):

G R Rios-Munoz ◽

N Soto ◽

P Avila ◽

T Datino ◽

F Atienza ◽

...

Keyword(s):

Atrial Fibrillation ◽

Treatment Success ◽

Persistent Atrial Fibrillation ◽

Recurrence Rates ◽

National Budget ◽

Funding Sources ◽

Cycle Lengths ◽

Public Grant ◽

Af Recurrence

Abstract Introduction Treatment of atrial fibrillation (AF) remains sub-optimal, with low success in pulmonary vein isolation (PVI) ablation procedures in long-standing-persistent AF patients. The maintenance mechanisms of AF are still under debate. Rotational activity (RA) events, also known as rotors, may play a role in perpetuating AF. The characterisation of these drivers during electroanatomical (EA) guided ablation procedures in relationship with follow-up and recurrence ratios in AF patients is necessary to design new ablation strategies to improve the AF treatment success. Purpose We report an AF patient cohort of endocardial mapping and PVI ablation procedures with additional RA events detected during the EA study. We aim to study the presence and distribution of RA in AF patients and its impact on AF recurrence when only PVI ablation is performed. Methods 75 persistent consecutive AF patients (age 60.7±9.8, 74.7% men) underwent EA mapping and RA detection with an automatic algorithm. The presence of RA was annotated on the EA map based on the unipolar electrograms (EGMs) registered with a 20-pole catheter. RA presence was analysed at different left atrial locations (37.2±14.8 sites per patient). AF recurrence was evaluated in follow-up after treatment. Results At follow-up (9±5 months), 50% of the patients presented AF recurrence. Patients with RA had more dilated atria in terms of volumes (p=0.002) and areas (p=0.001). Patients with RA exhibited higher mean voltage EGMs 0.6±0.3 mV vs 0.5±0.2 mV (p=0.036), with shorter cycle lengths 169.1±26.0 ms vs. 188.4±44.2 ms (p=0.044). Finally, patients with RA presented more AF recurrence rates than patients with no RA events (p=0.007). No significant differences were found in terms of comorbidities, e.g., heart failure, hypertension, COPD, stroke, SHD, or diabetes mellitus. Conclusions The results show that patients with more RA events and those with RA outside the PVI ablated regions presented higher AF recurrence episodes than those with no RA or events inside the areas affected by radio-frequency ablation. The study suggests that further ablation treatment of the areas harboring RA might be necessary to reduce the recurrence ratio in AF patients. FUNDunding Acknowledgement Type of funding sources: Public grant(s) – National budget only. Main funding source(s): Instituto de Salud Carlos III; Sociedad Española de Cardiología

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CT-based cardiovascular risk stratification benefits in asymptomatic patients

European Heart Journal - Cardiovascular Imaging ◽

10.1093/ehjci/jeab111.021 ◽

2021 ◽

Vol 22 (Supplement_3) ◽

Author(s):

AN Rozhkov ◽

DY Shchekochikhin ◽

PYU Kopylov

Keyword(s):

Computed Tomography ◽

Roc Analysis ◽

Basic Research ◽

Cardiovascular Risks ◽

Diagnostic Significance ◽

National Budget ◽

Funding Sources ◽

Asymptomatic Patients ◽

Outpatient Practice ◽

Public Grant

Abstract Funding Acknowledgements Type of funding sources: Public grant(s) – National budget only. Main funding source(s): Russian Foundation for Basic Research Background Cardiovascular risks (CVR) stratification and assessment of atherosclerotic plaques vulnerability in asymptomatic patients are serious challenges in outpatient practice. The use of modern CT techniques can help to personalize stratification. Methods The study included ambulatory patients with suspected coronary heart disease, who underwent computed tomography coronary angiography (CTA) in 2019-2020. CVR was estimated via Score, ACC/AHA, Framingham, MESA scales, CTA was performed on 640-slice computed tomography station. The patients were divided into two groups: patent arteries and atherosclerotic lesions (30-99%). We analyzed of the estimated CVR distribution, using coronary arteries visualization as the cut-off. Then ROC analysis of the scales, and Agatson Index was performed. Results The study included 60 patients, mean age is 61,5 years (65% female). 36,7% had no atherosclerosis; 56,7% had 30-99% coronary artery stenosis. Our results showed risks overestimation using the SCORE and Framingham scales (+33.33% and +52.38%) and underestimation using ACC/AHA and MESA (-33.33% and -9.52%) in patients without coronary atherosclerosis. The ROC analysis showed that the "standard" scales have no diagnostic significance for zero atherosclerosis (p > 0.05) or for >30% plaques (p > 0.05). Conclusion Our data shows a significant predictive superiority of CTA. Asymptomatic patients with zero or low coronary calcium with low estimated CVR may have a REAL high risk based on morphological plaque criteria.

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White lie during patient care: A qualitative study of nurses’ perspectives

10.21203/rs.2.24636/v3 ◽

2020 ◽

Author(s):

Alireza Nikbakht nasrabadi ◽

soodabeh joolaee ◽

Elham Navab ◽

Maryam esmaeilie ◽

mahboobe shali

Keyword(s):

Qualitative Study ◽

Patient Care ◽

Healthcare Providers ◽

Cultural Knowledge ◽

Hospital Nurses ◽

Structured Interviews ◽

Related Factors ◽

Patient’S Rights ◽

Wide Range ◽

Data Saturation

Abstract Background: Keeping the patients well and fully informed about diagnosis, prognosis, and treatments is one of the patient’s rights in any healthcare system. Although all healthcare providers have the same viewpoint about rendering the truth in treatment process, sometimes the truth is not told to the patients; that is why the healthcare staff tell “white lie” instead. This study aimed to explore the nurses’ experience of white lies during patient care. Methods: This qualitative study was conducted from June to December 2018. Eighteen hospital nurses were recruited with maximum variation from ten state-run educational hospitals affiliated to Tehran University of Medical Sciences. Purposeful sampling was used and data were collected by semi-structured interviews that were continued until data saturation. Data were classified and analyzed by content analysis approach. Results: The data analysis in this study resulted in four main categories and eleven subcategories. The main categories included hope crisis, bad news, cultural diversity, and nurses’ limited professional competences. Conclusion: Results of the present study showed that, white lie told by nurses during patient care may be due to a wide range of patient, nurse and/or organizational related factors. Communication was the main factor that influenced information rendering. Nurses’ communication with patients should be based on mutual respect, trust and adequate cultural knowledge, and also nurses should provide precise information to patients, so that they can make accurate decisions regarding their health care.

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Cardiovascular benefit of lowering LDL-C below 1 mmol/L (40 mg/dl)

European Heart Journal ◽

10.1093/eurheartj/ehab724.2585 ◽

2021 ◽

Vol 42 (Supplement_1) ◽

Author(s):

N A Marston ◽

R P Giugliano ◽

J G Park ◽

A Ruzza ◽

P S Sever ◽

...

Keyword(s):

Statin Therapy ◽

Clinical Benefit ◽

Recurrent Events ◽

Pcsk9 Inhibitors ◽

National Budget ◽

Funding Sources ◽

Lower Baseline ◽

The Difference ◽

Public Grant

Abstract Background The 2019 ESC/EAS Dyslipidemia Guidelines recommend an LDL-C goal of <1.4 mmol/L (∼55 mg/dl) for patients with very high-risk ASCVD, and <1 mmol/L (∼40 mg/dl) for those with recurrent events within 2 years despite taking maximally tolerated statin therapy. The addition of PCSK9 inhibitors to statin therapy can achieve LDL-C levels well below 1 mmol/L in many patients, yet the clinical benefit of LDL-C lowering beyond this level has recently been questioned. Methods FOURIER was a cardiovascular outcomes trial comparing evolocumab vs. placebo in patients with stable ASCVD on optimized statin therapy with a median follow-up of 2.2 years. We performed an exploratory analysis to determine the consistency of CV risk reduction with LDL-C lowering below ∼1 mmol/L (40 mg/dl) with evolocumab. We modeled the achieved LDL-C at 48 weeks in the two treatment arms as well as the percentage of LDL-C difference between the two arms that was due to LDL-C below ∼1 mmol/L (40 mg/dl) as a function of baseline LDL-C. We then modeled the hazard ratio (HR) for the composite of CV death, MI or stroke (per 1 mmol/L reduction in LDL-C) with evolocumab vs. placebo as a function of baseline LDL-C. Results All 27,564 patients from FOURIER were included in this analysis. Patients with lower baseline LDL-C achieved lower LDL-C levels following evolocumab therapy, with achieved LDL-C typically being below 1 mmol/L (40 mg/dl) once the baseline LDL-C was below 2.4 mmol/L (94 mg/dl) and reaching levels approaching 0.5 mmol/L (∼20 mg/dl). Accordingly, the further baseline LDL-C levels were below 2.4 mmol/L (94 mg/dl), the greater the proportion of the difference in achieved LDL-C between the evolocumab and placebo arms was due to LDL-C levels below ∼1 mmol/L (40 mg/dl), reaching nearly 40% of the difference in LDL-C between treatment arms (Upper Panel). Despite this, the clinical benefit of LDL-C lowering was not attenuated (p=0.78) (and even appeared greater), with robust reductions in risk of CV death, MI or stroke even when LDL-C was lowered to nearly 0.5 mmol/L (∼20 mg/dl) and having close to 40% of the LDL-C difference between treatment arms due to LDL-C lowering below ∼1 mmol/L (40 mg/dl) (Lower Panel). Conclusion PCSK9 inhibitors added to statin therapy can achieve LDL-C well below 1 mmol/L (40 mg/dl). There is no evidence for attenuation of the clinical benefit of lowering LDL-C below this threshold. These data support lowering LDL-C to below 1 mmol/L (40 mg/dl) in patients with ASCVD. FUNDunding Acknowledgement Type of funding sources: Public grant(s) – National budget only. Main funding source(s): National Institute of Health

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Exploring the experiences of stroke survivors, informal caregivers and healthcare providers in Sierra Leone: a qualitative study protocol

BMJ Open ◽

10.1136/bmjopen-2021-051276 ◽

2021 ◽

Vol 11 (12) ◽

pp. e051276

Author(s):

Jessica O'Hara ◽

Melvina Thompson ◽

Gibrilla Deen ◽

Andrew J M Leather ◽

Daniel Youkee ◽

...

Keyword(s):

Qualitative Study ◽

Sierra Leone ◽

Informal Caregivers ◽

Healthcare Providers ◽

Stroke Care ◽

Sub Saharan Africa ◽

Stroke Survivors ◽

Scientific Review ◽

Cross Sectional ◽

Stroke Research

IntroductionStroke is now the second leading cause of adult death in Sub-Saharan Africa. Developed in dialogue with stroke survivors and caregivers in Sierra Leone, this will be the first study to explore the experience of stroke as well as the perceptions of the barriers and facilitators to accessing stroke care among stroke survivors, informal caregivers and healthcare providers. Findings will inform future stroke research and care in Sierra Leone.Methods and analysisA cross-sectional qualitative study employing semistructured interviews that will be audiorecorded, translated, transcribed and coded.SettingFreetown, Sierra Leone.ParticipantsInterviews with a purposive sample of stroke survivors, informal caregivers and healthcare providers.AnalysisInterviews will be coded by two authors and inductively analysed using thematic analysis.Ethics and disseminationThis study has received ethical approval from the Sierra Leone Ethics and Scientific Review Committee (8 December 2020) and the KCL Biomedical & Health Sciences, Dentistry, Medicine and Natural & Mathematical Sciences Research Ethics Subcommittee (reference: HR-20/21-21050). The findings of the study and learning in terms of the process of coproduction and involvement of stroke survivors will be disseminated via peer-reviewed publications, conferences, media and lay reports.

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Barriers to Self-care Among Patients with Heart Failure: A Qualitative Study

Journal of Caring Sciences ◽

10.34172/jcs.2020.026 ◽

2020 ◽

Author(s):

Reza Negarandeh ◽

Ali Aghajanloo ◽

Khatereh Seylani

Keyword(s):

Heart Failure ◽

Content Analysis ◽

Qualitative Content Analysis ◽

Healthcare Providers ◽

Self Care ◽

The Body ◽

Financial Strain ◽

Personal Factors ◽

Structured Interviews ◽

Patients With Heart Failure

Introduction: Heart failure is the most prevalent cardiovascular disease. It is the end stage of most cardiovascular diseases and is characterized by the reduced ability of the heart to pump enough blood to fulfill the metabolic needs of the body. Self-care is the basis of the management of chronic diseases such as heart failure. The aim of this study was to explore the barriers to self-care among patients with heart failure. Methods: This was a qualitative content analysis. Participants were fourteen patients with heart failure and three healthcare providers who were purposively recruited from cardiac care centers in Zanjan, Iran. Data were collected through in-depth semi-structured interviews and were analyzed through the conventional qualitative content analysis approach proposed by Elo and Kyngäs. Results: Self-care barriers -care among patients with HF were categorized into three main categories, namely personal factors, disease burden, and inefficient support system. Each category had three subcategories which were respectively lack of self-care knowledge, heart failure-related negative emotions, the difficulty of changing habits, progressive physical decline, comorbid conditions, financial strain, inadequate social support, healthcare providers’ inattention to self-care, and limited access to healthcare providers. Conclusion: Patients with heart failure face different personal, disease-related, and supportrelated barriers to self-care. Based on these barriers, healthcare providers can develop interventions for promoting self-care among patients with heart failure.

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Sex differences in cardiovascular research

European Heart Journal ◽

10.1093/eurheartj/ehab724.3167 ◽

2021 ◽

Vol 42 (Supplement_1) ◽

Author(s):

D N Millenaar ◽

M Dillmann ◽

T Fehlmann ◽

A Flohr ◽

R Mehran ◽

...

Keyword(s):

Senior Author ◽

Cardiovascular Research ◽

National Budget ◽

Female Authors ◽

Funding Sources ◽

Research Activities ◽

Average Impact ◽

Female Authorship ◽

Public Grant ◽

Number Of Citations

Abstract Background Women are underrepresented in cardiovascular publications. We sought to investigate sex-specific differences in cardiovascular research over the last decade. Methods and results All 387,463 cardiovascular publications between 2010–2019 were retrieved from Web-of-Science and analyzed regarding the authors' sex, the average impact factor (IF), the number of citations, co-authors per article, and international collaborations. The number of cardiovascular research articles increased between 2010–2019 from 19,960 to 29,604 articles per year. The number of articles written by female first authors increased by 48.3% (6434 articles in 2010 and 11,343 articles in 2019) and by 35.0% for male first authors (13,526 articles in 2010 and 18,261 articles in 2019). The last/senior author was more likely to be female in articles with female first authors compared with male first authors (28.2% vs. 14.1%; odds ratio 2.48, 95% confidence interval 2.43–2.53, p<0.001). The average IF for articles by female first authors was lower compared to male (3.1±3.8 vs. 3.5±4.9, p<0.001). Likewise, the H-Index was lower for female than male first authors (1.07±0.74 vs. 1.25±0.98, p<0.001), as was the number of citations per articles (14.0±31.1 vs. 18.0±68.8 citations, p<0.001). Female first authors had fewer co-authors per article than their male peers (7.4±19.6 vs. 8.2±35.2; p<0.001) and were less represented in articles with >15 co-authors (3,623 articles by female and 8,941 by male first authors; ratio female to male 0.41). Scientific advancement as the ratio between female to male first authorships was highest in publications from Latin America (ratio 0.92) and lowest in Asia (ratio 0.40). Female authorship articles reached the highest IF in North America (average IF 3.7), the lowest Africa (average IF 1.8). Conclusions Publications in cardiovascular research have increased over the last decade, particularly by female authors. Female researchers are cited less often compared with their male peers and publish with fewer co-authors. The IF remains lower for articles by female researchers. Efforts to further increase women-led research activities are needed FUNDunding Acknowledgement Type of funding sources: Public grant(s) – National budget only. Main funding source(s): German Cardiac SocietyGerman Research Foundation (DFG)

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