Pericardial Fat Is Associated With Less Severe Multiorgan Failure Over Time in Patients With Coronavirus Disease-19: The Maastricht Intensive Care COVID Cohort

PURPOSE

Pericardial fat (PF) and epicardial adipose tissue (EAT) may enhance the proinflammatory response in corona virus-19 (COVID-19) patients. Higher PF and EAT volumes might result in multiorgan failure and explain unfavorable trajectories.The aim of this study was to examine the association between the volume of PF and EAT and multiorgan failure over time.

MATERIALS AND METHODS

All mechanically ventilated COVID-19 patients with an available chest computed tomography were prospectively included (March-June 2020). PF and EAT volumes were quantified using chest computed tomography scans. Patients were categorized into sex-specific PF and EAT tertiles. Variables to calculate Sequential Organ Failure Assessment (SOFA) scores were collected daily to indicate multiorgan failure. Linear mixed-effects regression was used to investigate the association between tertiles for PF and EAT volumes separately and serial SOFA scores over time. All models were adjusted.

RESULTS

Sixty-three patients were divided into PF and EAT tertiles, with median PF volumes of 131.4 mL (IQR [interquartile range]: 115.7, 143.2 mL), 199.8 mL (IQR: 175.9, 221.6 mL), and 318.8 mL (IQR: 281.9, 376.8 mL) and median EAT volumes of 69.6 mL (IQR: 57.0, 79.4 mL), 107.9 mL (IQR: 104.6, 115.1 mL), and 163.8 mL (IQR: 146.5, 203.1 mL). Patients in the highest PF tertile had a statistically significantly lower SOFA score over time (1.3 [-2.5, -0.1], P =0.033) compared with the lowest PF tertile. EAT tertiles were not significantly associated with SOFA scores over time.

CONCLUSION

A higher PF volume is associated with less multiorgan failure in mechanically ventilated COVID-19 patients. EAT volumes were not associated with multiorgan failure.

Women have less progression of paroxysmal atrial fibrillation: data from the RACE V study

BACKGROUND

Sex differences in atrial fibrillation (AF) are observed in terms of comorbidities, symptoms, therapies received, AF progression and cardiovascular complications.

METHODS

We assessed the differences in prevalence and the determinants of AF progression, as well as the clinical characteristics and quality of life (QoL), between women and men with paroxysmal AF included in the RACE V (Reappraisal of Atrial Fibrillation: Interaction between hyperCoagulability, Electrical remodeling, and Vascular Destabilisation in the Progression of AF) study. At baseline, extensive phenotyping was done. To assess AF progression, implantable loop recorder (ILR) monitoring was used throughout follow-up. AF progression was defined as (1) progression to persistent or permanent AF or (2) progression of paroxysmal AF (>3% burden increase).

RESULTS

417 patients were included, 179 (43%) of whom were women. Women were older (median 67 years vs 63 years, p<0.001), less often had coronary artery disease (n=11 (6%) vs n=36 (16%), p=0.003), had more obesity (n=57 (32%) vs n=50 (21%), p=0.013), had less epicardial and pericardial fat (median 144 (interquartile range [IQR] 94-191) mL vs 199 (IQR 146-248) mL, p<0.001; and median 89 (ICQ 61-121) mL vs 105 (IQR 83-133) mL, p<0.001, respectively) and had more impaired left atrial function. The median follow-up was 2.2 (1.6-2.8) years. 51 of 417 patients (5.5% per year) showed AF progression (15/179 (8.4%) women and 36/238 (15.1%) men, p=0.032). Multivariable analysis showed tissue factor pathway inhibitor, N-terminal prohormone brain natriuretic peptide (NT-proBNP) and PR interval being associated with AF progression in women and factor XIIa:C1 esterase, NT-proBNP and proprotein convertase subtilisin/kexin type 9 in men. QoL was not different between sexes.

CONCLUSION

Despite older age, the incidence of AF progression was lower in women. Parameters associated with AF progression varied in part between sexes, suggesting different underlying pathophysiological mechanisms.

Time of onset of atrial fibrillation and atrial fibrillation progression data from the RACE V study

AIMS

Atrial fibrillation (AF) progression is associated with adverse outcome, but the role of the circadian or diurnal pattern of AF onset remains unclear. We aim to assess the association between the time of onset of AF episodes with the clinical phenotype and AF progression in patients with self-terminating AF.

METHODS AND RESULTS

The Reappraisal of AF: Interaction Between Hypercoagulability, Electrical Remodelling, and Vascular Destabilization in the Progression of AF study included patients with self-terminating AF who underwent extensive phenotyping at baseline and continuous rhythm monitoring with an implantable loop recorder (ILR). In this subanalysis, ILR data were used to assess the development of AF progression and the diurnal pattern of AF onset: predominant (>80%) nocturnal AF, predominant daytime AF, or mixed AF without a predominant diurnal AF pattern. The median follow-up was 2.2 (1.6-2.8) years. The median age was 66 (59-71) years, and 117 (42%) were women. Predominant nocturnal (n = 40) and daytime (n = 43) AF onset patients had less comorbidities compared to that of mixed (n = 195) AF patients (median 2 vs. 2 vs. 3, respectively, P = 0.012). Diabetes was more common in the mixed group (12% vs. 5% vs. 0%, respectively, P = 0.031), whilst obesity was more frequent in the nocturnal group (38% vs. 12% vs. 27%, respectively, P = 0.028). Progression rates in the nocturnal vs. daytime vs. mixed groups were 5% vs. 5% vs. 24%, respectively (P = 0.013 nocturnal vs. mixed and P = 0.008 daytime vs. mixed group, respectively).

CONCLUSION

In self-terminating AF, patients with either predominant nocturnal or daytime onset of AF episodes had less associated comorbidities and less AF progression compared to that of patients with mixed onset of AF.

CLINICAL TRIAL REGISTRATION

NCT02726698.

Prevalence and determinants of atrial fibrillation progression in paroxysmal atrial fibrillation

OBJECTIVE

Atrial fibrillation (AF) often progresses from paroxysmal AF (PAF) to more permanent forms. To improve personalised medicine, we aim to develop a new AF progression risk prediction model in patients with PAF.

METHODS

In this interim-analysis of the Reappraisal of AF: Interaction Between HyperCoagulability, Electrical Remodelling, and Vascular Destabilisation in the Progression of AF study, patients with PAF undergoing extensive phenotyping at baseline and continuous rhythm monitoring during follow-up of ≥1 year were analysed. AF progression was defined as (1) progression to persistent or permanent AF or (2) progression of PAF with >3% burden increase. Multivariable analysis was done to identify predictors of AF progression.

RESULTS

Mean age was 65 (58-71) years, 179 (43%) were female. Follow-up was 2.2 (1.6-2.8) years, 51 of 417 patients (5.5%/year) showed AF progression. Multivariable analysis identified, PR interval, impaired left atrial function, mitral valve regurgitation and waist circumference to be associated with AF progression. Adding blood biomarkers improved the model (C-statistic from 0.709 to 0.830) and showed male sex, lower levels of factor XIIa:C1-esterase inhibitor and tissue factor pathway inhibitor, and higher levels of N-terminal pro-brain natriuretic peptide, proprotein convertase subtilisin/kexin type 9 and peptidoglycan recognition protein 1 were associated with AF progression.

CONCLUSION

In patients with PAF, AF progression occurred in 5.5%/year. Predictors for progression included markers for atrial remodelling, sex, mitral valve regurgitation, waist circumference and biomarkers associated with coagulation, inflammation, cardiomyocyte stretch and atherosclerosis. These prediction models may help to determine risk of AF progression and treatment targets, but validation is needed.

TRIAL REGISTRATION NUMBER

NCT02726698.

The role of the autonomous nervous system in atrial fibrillation progression. Data from the RACE V study

Funding Acknowledgements

Type of funding sources: Foundation. Main funding source(s): We acknowledge the support from the Netherlands Cardiovascular Research Initiative: an initiative with support of the Dutch Heart Foundation, CVON 2014-9: Reappraisal of Atrial Fibrillation: interaction between hyperCoagulability, Electrical remodelling, and Vascular destabilisation in the progression of AF (RACE V). Unrestricted grant support from Medtronic Trading NL B.V.

Background

Atrial fibrillation (AF) progression is associated with adverse outcome.

The autonomic nervous system plays a yet unsettled role in initiation and progression of AF.

Purpose

To assess in patients with paroxysmal selfterminating AF differences in phenotype and AF progression depending on the role of the autonomic nervous system in triggering AF episodes.

Methods

Patients with paroxysmal AF included in the Reappraisal of AF: Interaction Between HyperCoagulability, Electrical Remodelling, and Vascular Destabilisation in the Progression of AF (RACE V) study were analysed. Patients were extensively phenotyped at baseline and received continuous rhythm monitoring with an implantable loop recorder (ILR).To adequately define the role of the autonomic nervous system in triggering AF only patients with at least 3 selfterminating AF episodes were included. ILR data were used to assess whether AF was mainly vagally induced (&gt;80% of episodes starting during night time) or mainly adrenergically induced (&gt;80% starting during daytime), and to assess the development of AF progression. If a patient could not be identified as either vagal or adrenergic, they were classified as mixed AF. Primary outcome were differences in AF progression between the three groups. AF progression was defined as (1) progression to persistent or permanent AF, or (2) progression of PAF with &gt;3% burden increase. Follow-up was 2.2 (1.6-2.8) years.

Results

278 patients were included, median was age 66 (59-71) years, 117 (42%) were women (Table 1). Patients with vagally or adrenergically induced AF had less comorbidities compared to mixed AF patients (median 2 versus 2 versus 3, respectively, p=0.012). In the mixed group, compared to either the vagal or adrenergic group the estimated glomerular filtration rate was slightly worse (median 78 versus 84 versus 82 mL/min*1.73m2 in the mixed versus vagal and adrenergic group, respectively, p=0.018), diabetes was more common (12% versus 5% versus 0%, respectively, p=0.031). Obesity was most often present in the vagal group (38% versus 12% versus 27%, in the vagal versus adrenergic versus mixed group, respectively p=0.028). Progression rates in the vagal versus adrenergic versus mixed groups were 5% versus 5% versus 24%, respectively (p=0.013 vagal versus mixed and p=0.008 adrenergic versus mixed group, respectively)(Figure).

Conclusion

Important differences exist between AF patients depending on their autonomic nervous system associated triggering mechanisms. Patients with either vagally or adrenergically induced AF have less comorbidities as compared to those with a mixed initiation type of AF and showed lower AF progression rates.

Minimally invasive atrial fibrillation ablation and left anterior descending bypass grafting

Funding Acknowledgements

Type of funding sources: None.

Background

Minimally invasive direct coronary artery bypass (MIDCAB) with robotic left internal mammary artery (LIMA) harvesting for a critical left anterior descending (LAD) stenosis and thoracoscopic ablation for atrial fibrillation (AF) may represent safe and effective alternatives to more invasive surgical approaches via sternotomy.

Purpose

To evaluate the feasibility, safety and efficacy of a MIDCAB procedure with concomitant thoracoscopic AF ablation.

Methods

We prospectively analysed all patients who underwent a minimally invasive, off-pump, MIDCAB through a left mini-thoracotomy with concomitant left-sided thoracoscopic AF ablation using a bipolar radio frequent clamp between 2017 and 2021.

Results

Twenty-three patients were included (age 69±8 years, BMI 29±4kg/m2, paroxysmal AF 61%, LAVI 42±11 ml/m2). All patients received an off-pump LIMA-LAD anastomosis. Ablation of the left (n=23) and right (n=22) pulmonary veins and box (n=21) was succeeded by epicardial validation of exit- and entrance block (n=22). No procedural complications were observed and complications during hospital admission and after discharge were: bleeding of the LIMA-LAD anastomosis n=1; myocardial infarction requiring percutaneous intervention of the LIMA-LAD n=1, respiratory insufficiency due to pleural effusion or atelectasis n=3, hospital readmission due to pleural- and pericardial effusion n=2. Duration of hospital stay was 6±2 days. After 12 months, 16/20 (80%) patients were in sinus rhythm when allowing anti-arrhythmic drugs and 18/20 (90%) patients were free from myocardial infarction.

Conclusion

Robot-assisted MIDCAB surgery for LIMA-LAD grafting concomitant with left-sided thoracoscopic AF ablation is a feasible, safe and efficacious minimally invasive treatment strategy for patients with a critical LAD stenosis and AF suitable for minimally invasive surgery.

The 3S-AF scheme, rather than the 4S-AF scheme, predicts progression in patients with paroxysmal atrial fibrillation: data from RACE V study

Funding Acknowledgements

Type of funding sources: Public grant(s) – National budget only. Main funding source(s): support from the Netherlands Cardiovascular Research Initiative: an initiative with support of the Dutch Heart Foundation, CVON 2014-9: Reappraisal of Atrial Fibrillation: interaction between hyperCoagulability, Electrical remodelling, and Vascular destabilisation in the progression of AF (RACE V).

Purpose

To assess whether the 4S-AF scheme predicts AF progression, cardiovascular hospitalizations and mortality in patients with self-terminating paroxysmal AF.

Methods

We analysed well-phenotyped patients with paroxysmal AF from the Reappraisal of Atrial Fibrillation: Interaction between HyperCoagulability, Electrical remodelling, and Vascular Destabilisation in the Progression of AF (RACE V study). From the 417 patients included in RACE V, 341 (82%) had echocardiography available. Patient had continuous monitoring with implantable loop recorders or pacemakers. Primary endpoint of RACE V was AF progression, defined as (1) progression to persistent or permanent AF, or (2) progression of PAF with &gt;3% burden increase. Median follow-up was 2.2 (1.6-2.8) years. Patients were given a score based on the components of the 4S-AF scheme (St, stroke=1; Sy, symptoms=2; Sb, Severity of burden=2; Su, Substrate=5) to a total maximum of 10 points (table 1). Left atrial fibrosis was not evaluated in our patients and therefore not included into the score. A score of zero (0) in the AF burden domain was given to all patients due to the presence of paroxysmal AF in all. A modified 4S-AF scheme was designed by eliminating the symptom domain, resulting in a 3S-AF scheme. Logistic regression was performed to assess AF progression and the composite endpoint of cardiovascular hospitalizations and mortality, C-statistic to assess prediction of the score, for both using the 4S-AF and the modified 3S-AF scheme.

Results

Mean age was 65 (IQR 58-71) years, 149 (44%) were women, 103 (48%) had heart failure (HFrEF 6 [2%]; HFpEF 97 [46%]), 276 (81%) had hypertension, 38(11%) had coronary artery disease and 162(48%) atherosclerosis (Table 2, Panel A). Based on the 4S-AF scheme, patients had an average score of 4.5±1.3, the majority had a score under 5 (n=272, 80%), 20% of the score was explained by the S1 domain (stroke), 16% of the score was explained by the Sy domain (symptoms), and 64% of the score was explained by the Su domain (substrate). The score points from the 4S-AF scheme did not predict the risk of AF progression (OR 1.08 95%CI 0.84 – 1.39, C-statistic 0.53) nor the composite endpoint (OR 0.79 95%CI 0.53 – 1.20, C-statistic 0.42, Table 2, Panel B). However, when excluding the Sy domain (symptoms) from the scheme, the 3S-AF scheme, it predicted the risk of progression (OR 1.54 95%CI 1.12 – 2.18, C-statistic 0.61, Table 2, Panel B).

Conclusion

In paroxysmal AF patients the 4S-AF scheme does not predict AF progression nor the composite endpoint cardiovascular hospitalizations and mortality. Although symptoms are important for choosing the treatment strategy, they may be less relevant to determine AF progression, cardiovascular hospitalization and mortality. To assess progression, the 3S-AF scheme may be more appropriate.