The timing of death in acute pulmonary embolism patients regarding the mortality risk stratification at admission to hospital

Background

The management of patients with acute pulmonary embolism (aPE) depend on the risk stratification at hospital admission. It is unknown when normotensive aPE patients with some other risk factors deteriorate.

Patients and methods

Patients with objectively established acute PE diagnosis enrolled in the regional PE registry from January 2015 to December 2021, were studied in this investigation. According to European Society od Cardiology criteria patients were stratified during admission to hospital in four risk stratums. The timing for death and the main reason for death were recorded. PE-related death was defined if patient has died because of cardiac arrest or obstructive shock if there is no another possible reason for that.

Results

In the REPER registry. Among 1541 patients (514 low risk, 366 intermediate-low risk, 472 intermediate-high risk and 189 high risk) with aPE, 101 (6.6%) have died primary from aPE and 64 (4.2%) have died from other reasons during the 30-day follow-up. PE-related death across the mortality risk groups were 0.8%, 1.1%, 8.5% and 28.5% in low-risk, intermediate-low, intermediate-high and high risk PE, respectively. Median time from hospital admission to PE related death was significantly longer in intermediate-high than in high risk patients 4.5 (2.0–9.0) vs 1.0 (1.0–4.5) days, p=0.001. In the high risk group 50.9% of patients died during the first 24 hours, 9.0% in the next 24 hours and 83.0% of patients died during the first 5 days from admission. In the intermediate-high risk group 17.5% died in the first 24 hours, 12.5% died in the next 24 hours and next 25% died till the fifth day. There was no difference in timing of non PE-related death between intermediate-high and high risk patients 9.5 (6.0–18.5) vs 7.0 (3.0–23.5) days, p=0.631.

Conclusion

There is significant delay in timing of death in intermediate-high compare to high risk PE patients, however, almost 50% of patients who died in the intermediate-high risk PE patients have died inside the first 5 days from hospital admission.

Funding Acknowledgement

Type of funding sources: None.

P6465Are we calculated enough? Glomerular filtration rate as a predictor of intra-hospital prognosis in patients with pulmonary embolism

Background

Pulmonary embolism (PE) can lead to multi-organ damage including an acute renal dysfunction which is associated with adverse events and high long-term mortality rate.

Purpose

The aim of our study was to investigate the predictive role of renal dysfunction on intrahospital mortality risk in patients hospitalized due to PE. The study was performed in intensive care units of six university hospitals.

Methods

The prospective cohort study comprised 665 consecutive patients with acute PE which was confirmed using MDCT. All patients underwent echocardiography examination on admission and blood samples were collected for troponin I (TnI), B-type natriuretic peptide (BNP) and routine laboratory analyses.

Results

Based on estimated glomerular filtration rate (GFR), patients were divided into three groups: first with the GFR <30ml/min, second with GFR 30–60 ml/min, and third with GFR >60 ml/min. During hospitalization in the first group the overall incidence of death was recorded in 28 (45.9%), in the second in 42 (18.9%), and in the third in 30 (7.9%) patients (p<0.0001). Pulmonary embolism as a cause of death was recorded in the first group in 18 (29.5%) patients, in the second in 25 (11.3%) and in the third in 17 (4.5%) patients (p<0.0001). Fatal bleeding was recorded in the first group in 1 (1.6%), in the second in 1 (0.5%) and in the third group in 3 (0.8%) patients (p<0.05). There were no significant differences regarding major bleeding frequency among the groups. Multivariate analysis showed that age, comorbidities, hemodynamic status, TnI, and GFR were strongly associated with an overall mortality rate and with death due to PE, while the use of anticoagulation therapy influenced the fatal bleeding rate. After controlling for age, we found that GFR on admission had a significant effect on in-hospital survival. Compared with patients in the third group, those from the second group had more than 2 fold increased mortality risk [OR 2.17 (CI 1.301–3.625), p=0.001], and patients in the first group had 6 fold higher risk of mortality [OR 6.006 (CI 3.487–6.006)]. In the ROC analysis GFR showed significant predictive value for intra-hospital mortality risk in PE patients [AUC= 0.725, 95% CI (0.68–0.78), p<0.001]. The highest sensitivity (64%) and specificity (70%) had GFR “cutoff” value of 59.12/min.

Conclusion

Renal dysfunction, on admission, in patients with acute PE is strongly associated with high intrahospital mortality risk and fatal bleeding. The estimation of GFR in these patients is important not only for prediction of the outcome but also for the prevention of bleeding complications, regarding the optimal dosage of anticoagulants. Even though it seems that GFR calculation is not still the clinical routine in PE.

P5591Efficacy and safety of lower dose slow infusion of t-PA for intermediate-risk pulmonary embolism patients with risk for bleeding

Background

Current guidelines do not recommend thrombolytic therapy for the treatment of intermediate-risk pulmonary embolism (PE) because of the tight balance between the benefit and safety with classic protocols.

Aim

The aim of this study was to compare the new thrombolytic protocol with lower-dose slow-infusion (LDSI) of tissue plasminogen activator (tPA) to classic 2-hours tPA infusion protocol or no-reperfusion in patients with intermediate-high risk PE with higher bleeding risk regarding 30-day efficacy and safety.

Methods

Among 849 patients with PE from the Serbian multicenter registry, 469 patients who fulfilled criteria for intermediate-risk PE were involved in the study. After propensity score matching 425 patients [263 (61.9%), 99 (23.3%) and 63 (14.8%) were treated with no-reperfusion, classic tPA protocol (100 mg for 2 hours) and LDSI of tPA (2–5 mg/hour either vie local catheter or systemic venous infusion with dose range of 25–50 mg)]. The basic characteristics of patients were well balanced between groups except that patients treated with LDSI of tPA had significantly higher usage of drugs which can be associated to bleeding and more previous bleeding events. Thirty day all-cause and PE-caused mortality and 7-day major bleeding were the main efficacy and safety end-points, respectively.

Results

All-cause and PE-cause 30-day mortality were 8.7% vs 16.2% vs 1.6% (Log rank p=0.007) and 4.5% vs 11.0% vs 0.0% (Log rank p=0.008) in patients with no-reperfusion, classic tPA protocol and LDSI of tPA protocol, respectively. Major bleeding at 7 days were 2.7% vs 8.1% vs 14.3% (Log rank p=0.001) in patients with no-reperfusion, classic tPA protocol and LDSI of tPA protocol, respectively. There was one fatal intracranial bleeding during catheter infusion of tPA.

Conclusion

Lower-dose slow-infusion of tPA protocol decreased significantly all-cause and PE-cause mortality at 30-day at the cost of excess of non-fatal major bleeding at 7-day in patients with intermediate-risk PE and higher risk for bleeding.

Acknowledgement/Funding

None

P4587Impact of diabetes mellitus on myocardial revascularisation method in the light of the 2018 ESC/EACTS guidelines: Results from the PROUST Study

Background/Introduction

Results of currently available randomized trials have shown divergent outcomes in diabetic patients undergoing percutaneous coronary intervention (PCI) or coronary artery bypass grafting (CABG). The 2018 ESC/EACTS guidelines on myocardial revascularization do not recommend PCI in patients with diabetes and SYNTAX score ≥23.

Purpose

We aimed to compare the all-cause 4-year mortality after revascularization for complex coronary artery disease (CAD) in diabetics.

Methods

The study group comprised consecutive diabetics with angiographically proven three-vessel CAD (≥50% diameter stenosis) and/or unprotected left main CAD (≥50% diameter stenosis) without major hemodynamic instability, who were treated in two institutions with PCI or referred for CABG between 2008 and 2010. All-cause mortality was ascertained by telephone contacts and/or from Mortality Registries.

Results

Using the hospital data system, 5145 patients were screened and 4803 elected not to follow the inclusion criteria. Out of 342 included patients, 177 patients underwent PCI and 165 patients were referred for CABG. Patients with whom CABG was performed were significantly older (64.69±8.8 vs. 62.6±9.4, p=0.03), more often on insulin treatment (91/165=55.2% vs. 26/177=14.7%, p<0.01), had more complex anatomical characteristics i.e. higher SYNTAX scores (32.5 IQR (15) vs. 18.0 IQR (15), p<0.01) and with left main stenosis (70/165=42.4% vs. 7/177=4.0%, p<0.01), compared to patients treated with PCI. The cumulative incidence rates of all-cause death were significantly different between PCI and CABG at 4 years (16/177=9.0% vs. 26/165=15.7%, respectively, log-rank p=0.03). There was a higher incidence of all-cause mortality in PCI patients with intermediate (23–32) and high (≥33) SYNTAX scores compared with those with low (0–22) SYNTAX scores (6/32=18.8% vs. 6/124=4.8%, log-rank p=0.01; 4/21=19.1% vs. 6/124=4.8%, log-rank p=0.02, respectively). On the contrary, patients who underwent CABG displayed similar morality rates irrespective of the SYNTAX scores (SYNTAX 0–22: 5/34=14.7%; SYNTAX 23–32: 9/54=16.7%; SYNTAX ≥33: 12/77=15.6%; log-rank p=0.9). Finally, when compared with CABG, more deaths were observed following PCI with intermediate and high SYNTAX scores (intermediate SYNTAX (23–32) PCI: 6/32=18.8% vs. CABG: 26/165=15.8%, log-rank p=0.94; high SYNTAX (≥33) PCI: 4/21=19.1% vs. CABG 26/165=15.8%, log-rank p=0.87).

Conclusions

During a 4-year follow-up, CABG in comparison with PCI was associated with a higher rate of all-cause death, which can be accounted for by older age and comorbidities. In diabetics, our analysis is suggestive that PCI probably should be avoided in patients with SYNTAX ≥23, which is in concordance with the most recent guidelines. Individualized risk assessment as well as quantification of CAD by SYNTAX score remains essential in choosing appropriate revascularization method in patients with diabetes and complex CAD.

Acknowledgement/Funding

None