Clinical outcomes with biodegradable versus durable polymer drug-eluting stents in patients with ST-elevation myocardial infarction

BACKGROUND

Coronary drug-eluting stents (DES) built with either durable (DP) or biodegradable (BP) polymeric coatings have been largely tested and are extensively available for routine use. However, their comparative performance remains an open question, particularly in more complex subsets of patients.

AIMS

We evaluated the outcomes of patients with ST-elevation myocardial infarction (STEMI) treated with primary percutaneous coronary intervention (pPCI) using DP-DES versus BP-DES in a large multicenter real-world registry.

METHODS

The population comprised patients with STEMI treated with pPCI within 12 h of symptoms onset. Those treated with more than one DES who received different polymer types were excluded. The final cohort for analysis was selected after propensity score matching (PSM), computed to generate similar groups of DP DES versus BP DES. Primary endpoint was the incidence of major adverse cardiac events (MACE), defined as the composite of total death, myocardial infarction and target lesion revascularization at 2 years.

RESULTS

From January 2017 to April 2022, a total of 1527 STEMI patients underwent pPCI with a single DES type (587 DP-DES; 940 BP-DES). After PSM, 836 patients (418 patients in the DP-DES and 418 patients in the BP-DES groups), comprised the final study population. Both study groups had a similar baseline profile. Patients treated with BP-DES group had similar rates of MACE (15.3 % vs. 19.4 %, HR 0.69, 95 % CI 0.50-0.94, p = 0.022). Rates of target lesion revascularization was lower in BP DES group (0.7 % vs. 3.8 %, HR 0.17, 95 % CI 0.05-0.51, p = 0.006).

CONCLUSION

In a cohort of STEMI patients submitted to pPCI, BP and DP DES had similar rates of the primary outcome. Patients treated with BP DES, however, had a decreased incidence of TLR at after 2-year follow-up.

Pre-percutaneous coronary intervention sudden cardiac arrest in ST-elevation myocardial infarction: Incidence, predictors, and related outcomes

Background

ST-segment elevation myocardial infarction (STEMI) is a frequent cause of sudden cardiac arrest (SCA) and early percutaneous coronary intervention (PCI) is associated with increased survival. Despite constant improvements in SCA management, survival remains poor. We aimed to assess pre-PCI SCA incidence and related outcomes in patients admitted with STEMI.

Methods

This was a prospective cohort study of patients admitted with STEMI in a tertiary university hospital over 11  years. All patients were submitted to emergency coronary angiography. Baseline characteristics, details of the procedure, reperfusion strategies, and adverse outcomes were assessed. The primary outcome was in-hospital mortality. The secondary outcome was 1-year mortality after hospital discharge. Predictors of pre-PCI SCA was also assessed.

Results

During the study period 1,493 patients were included; the mean age was 61.1 years (±12), and 65.3% were male. Pre-PCI SCA was present in 133 (8.9%) patients. In-hospital mortality was higher in the pre-PCI SCA group (36.8% vs. 8.8%, p < 0.0001). In multivariate analysis, anterior MI, cardiogenic shock, age, pre-PCI SCA and lower ejection fraction remained significantly associated with in-hospital mortality. When we analyzed the interaction between pre-PCI SCA and cardiogenic shock upon admission there is a further increase in mortality risk when both conditions are present. For predictors of pre-PCI SCA, only younger age and cardiogenic shock remained significantly associated after multivariate analysis. Overall 1-year mortality rates were similar between pre-PCI SCA survivors and non-pre-PCI SCA group.

Conclusion

In a cohort of consecutive patients admitted with STEMI, pre-PCI SCA was associated with higher in-hospital mortality, and its association with cardiogenic shock further increases mortality risk. However, long-term mortality among pre-PCI SCA survivors was similar to non-SCA patients. Understanding characteristics associated with pre-PCI SCA may help to prevent and improve the management of STEMI patients.

Increased serum IL-6 is predictive of long-term cardiovascular events in high-risk patients submitted to coronary angiography: an observational study

BACKGROUND

Interleukin-6 (IL-6) is an inflammation-related cytokine associated with an elevated risk of cardiovascular events. In a previous study, we demonstrated that increased IL-6 was predictive of sub-clinical atherosclerotic coronary disease in intermediate-risk patients undergoing coronary angiography. In the present study, we investigated whether increased serum IL-6 is predictive of cardiovascular events in high-risk patients.

METHODS

In this observational study, consecutive patients referred for elective coronary angiography due to stable chest pain/myocardial ischemia had IL-6 measured immediately before the procedure. Long-term follow-up was performed by phone call or e-mail, and their clinical registries were revised. The primary outcome was a composite of new myocardial infarction, new ischemic stroke, hospitalization due to heart failure, new coronary revascularization, cardiovascular death, and death due to all causes.

RESULTS

From 141 patients submitted to coronary angiography and IL-6 analysis, 100 had complete follow-up data for a mean of 5.7 years. The median age was 61.1 years, 44% were men, and 61% had type-2 diabetes. The median overall time-to-event for the primary outcome was 297 weeks (95% confidence interval [CI] 266.95-327.16). A receiver operator characteristic curve defined the best cut-off value of baseline serum IL-6 (0.44 pg/mL) with sensitivity (84.37%) and specificity (38.24%) to define two groups. High (> 0.44 pg/mL) IL-6 levels were predictive of cardiovascular events. (p for interaction = 0.015) (hazard ratio = 2.81; 95% CI 1.38-5.72, p = 0.01). Subgroup analysis did not find interactions between patients with or without diabetes, obesity, or hypertension.

CONCLUSION

In conclusion, an interleukin-6 level higher than 0.44 pg/mL, obtained just before elective coronary angiography, was associated with a poorer prognosis after a mean of 5,7-year. A pre-procedure IL-6 below 0.44 pg/mL, on the other hand, has a very good negative predictive value, suggesting a good prognosis, and may be useful to better indicate coronary angiography in high-risk patients. .

Comparison of Admission Lung Ultrasound and Left Ventricular End-Diastolic Pressure in Patients Undergoing Primary Percutaneous Coronary Intervention

[Figure: see text].

Tertiary hospital sewage as reservoir of bacteria expressing MDR phenotype in Brazil

High doses of antibiotics used in hospitals can affect the microbial composition of sewers, selecting resistant bacteria. In this sense, we evaluated the antibiotic resistance profile and the multiresistant phenotype of bacteria isolated in sewage from a tertiary hospital in the interior São Paulo state, Brazil. For bacteria isolation, 10 µL of sewage samples were sown in selective culture media and the isolates were identified using VITEK-2 automatized system. The antibiotic sensitivity test was performed by disk diffusion. High percentages of resistance were found for amoxicillin, ampicillin, ceftazidime, clindamycin, vancomycin and the multidrug-resistant phenotype (MDR) was attributed to 60.7% of the isolates. Our results show bacteria classified as critical/high priority by WHO List of Priority Pathogens (Enterococcus and Staphylococcus aureus resistant to vancomycin and Enterobacteriaceae resistant to carbapenems) in hospital sewage. Therefore, the implementation of disinfection technologies for hospital sewage would reduce the bacterial load in the sewage that will reach urban wastewater treatment plants, minimizing superficial water contamination and bacterial resistance spread in the environment.

Safety and feasibility of upper limb vascular access for cardiac catheterization in anticoagulated and non-anticoagulated patients

BACKGROUND

The upper limb approach utilizing transradial access for combined left and right heart catheterization (CLRHC) and ultrasound-guided antecubital venous access for isolated right heart catheterization (IRHC) are strategies that may reduce risks, especially in anticoagulated patients. combined left and right heart catheterization.

OBJECTIVES

To assess safety and feasibility of upper limb approach for IRHC or CLRHC in anticoagulated versus non-anticoagulated patients.

METHODS

Ninety-three patients who underwent IRHC or CLRHC with ultrasound-guided antecubital venous access and transradial arterial access were prospectively enrolled. The primary outcome was a composite of procedure failure and incidence of immediate vascular complications.

RESULTS

Of the 93 patients, 44 (47%) were on anticoagulation and 49 (53%) were not. Mean age was 54 ± 17 and 53 ± 15 years, respectively. Atrial fibrillation (39% vs 15%) and chronic kidney disease (21% vs 6%) were more common in anticoagulated patients. The main indication for anticoagulation was deep vein thrombosis/pulmonary thromboembolism in 22 patients (50%). The primary outcome occurred in 4 (8%) patients in the non-anticoagulated group as compared with 0 in the anticoagulated group (p = 0.12). Procedure failure occurred in two patients (4%) and immediate vascular complications in two patients (4%) in the non-anticoagulated group (p = 0.3 for all). There was no difference between groups regarding duration of the procedure, radiation dose, fluoroscopy time, post-procedure recovery room time and median time to venous or arterial hemostasis.

CONCLUSIONS

The upper limb approach for heart catheterization had similar rates of procedure failure and immediate vascular complications in anticoagulated patients when compared to non-anticoagulated patients.

Inter-observer variation of Syntax score among cardiac surgeons, clinical and interventional cardiologists

Background:

Despite the complexity of SYNTAX score (SS), guidelines recommend this tool to help choosing between coronary artery bypass grafting (CABG) and percutaneous coronary intervention (PCI) in patients with left main of three-vessel coronary artery disease. The aim of this study was to compare the inter-observer variation in SS performed by clinical cardiologists (CC), interventional cardiologists (IC), and cardiac surgeons (CS).

Methods:

Seven coronary angiographies from patients with left main and/or three-vessel disease chosen by a heart team were analyzed by 10 CC, 10 IC and 10 CS. SS was calculated via SYNTAX website.

Results:

Kappa concordance was very low between CC and CS (k = 0.176), moderate between CS and IC (k = 0.563), and moderate between CC and IC (0.553). There was a statistically significant difference between CC, who classified more cases as low complexity (70%), and CS, who classified more cases as moderate complexity (80%) (p = 0.041).

Conclusion:

Concordance between SS analyzed by CC, CS and IC is low. The usefulness of SS in decision-making of revascularization strategy is undeniable and evidence supports its use. However, this study highlights the importance of well-trained professionals on calculating the SS. It could avoid misclassification of borderline cases.

Ultrasound-guided antecubital vein approach for right heart catheterisation in a Brazilian tertiary centre

Objective

As a parallel to the radial approach for left heart catheterisation, forearm veins may be considered for the performance of right heart catheterisation. However, data regarding the application of this technique under ultrasound guidance are scarce. The current study aims to demonstrate the feasibility of right heart catheterisation through ultrasound-guided antecubital venous approach in the highly heterogeneous population usually referred for right heart catheterisation.

Methods

Data from consecutive right heart catheterisations performed at an academic centre in Brazil, between January 2016 and March 2017 were prospectively collected.

Results

Among 152 performed right heart catheterisations, ultrasound-guided antecubital venous approach was attempted in 127 (84%) cases and it was made feasible in 92.1% of those. Yet, there was no immediate vascular complication with the antecubital venous approach in this prospective series.

Conclusions

Ultrasound-guided antecubital venous approach for the performance of right heart catheterisation was feasible in the vast majority of cases in our study, without occurrence of vascular complications.

Comparison of neutrophil-to-lymphocyte ratio and mean platelet volume in the prediction of adverse events after primary percutaneous coronary intervention in patients with ST-elevation myocardial infarction

BACKGROUND AND AIMS

Elevated neutrophil-to-lymphocyte ratio (NLR) and mean platelet volume (MPV) are indirect inflammatory markers. There is some evidence that both are associated with worse outcomes in ST-segment elevation myocardial infarction (STEMI) after primary percutaneous coronary intervention (PCI). The aim of the present study was to compare the capacity of NLR and MPV to predict adverse events after primary PCI.

METHODS

In a prospective cohort study, 625 consecutive patients with STEMI, who underwent primary PCI, were followed. Receiver operating characteristic (ROC) curve analysis was performed to calculate the area under the curve (AUC) for the occurrence of procedural complications, mortality and major adverse cardiovascular events (MACE).

RESULTS

Mean age was 60.7 (±12.1) years, 67.5% were male. The median of NLR was 6.17 (3.8-9.4) and MPV was 10.7 (10.0-11.3). In multivariate analysis, both NLR and MPV remained independent predictors of no-reflow (relative risk [RR] = 2.26; 95%confidence interval [95%CI] = 1.16-4.32; p = 0.01 and RR = 2.68; 95%CI = 1.40-5.10; p < 0.01, respectively), but only NLR remained an independent predictor of in-hospital MACE (RR = 1.01; 95%CI = 1.00-1.06; p = 0.02). The AUC for in-hospital MACE was 0.57 for NLR (95%CI = 0.53-0.60; p = 0.03) and 0.56 for MPV (95%CI = 0.52-0.60; p = 0.07). However, when AUC were compared with DeLong test, there was no statistically significant difference for these outcomes (p > 0.05). NLR had an excellent negative predictive value (NPV) of 96.7 for no-reflow and 89.0 for in-hospital MACE.

CONCLUSIONS

Despite no difference in the ROC curve comparison with MPV, only NLR remained an independent predictor for in-hospital MACE. A low NLR has an excellent NPV for no-reflow and in-hospital MACE, and this could be of clinical relevance in the management of low-risk patients.

Red (660 nm) and infrared (830 nm) low-level laser therapy in skeletal muscle fatigue in humans: what is better?

In animal and clinical trials low-level laser therapy (LLLT) using red, infrared and mixed wavelengths has been shown to delay the development of skeletal muscle fatigue. However, the parameters employed in these studies do not allow a conclusion as to which wavelength range is better in delaying the development of skeletal muscle fatigue. With this perspective in mind, we compared the effects of red and infrared LLLT on skeletal muscle fatigue. A randomized double-blind placebo-controlled crossover trial was performed in ten healthy male volunteers. They were treated with active red LLLT, active infrared LLLT (660 or 830 nm, 50 mW, 17.85 W/cm², 100 s irradiation per point, 5 J, 1,785 J/cm² at each point irradiated, total 20 J irradiated per muscle) or an identical placebo LLLT at four points of the biceps brachii muscle for 3 min before exercise (voluntary isometric elbow flexion for 60 s). The mean peak force was significantly greater (p < 0.05) following red (12.14%) and infrared LLLT (14.49%) than following placebo LLLT, and the mean average force was also significantly greater (p < 0.05) following red (13.09%) and infrared LLLT (13.24%) than following placebo LLLT. There were no significant differences in mean average force or mean peak force between red and infrared LLLT. We conclude that both red than infrared LLLT are effective in delaying the development skeletal muscle fatigue and in enhancement of skeletal muscle performance. Further studies are needed to identify the specific mechanisms through which each wavelength acts.