Intravascular Ultrasound-Guided Coronary Lithotripsy Treatment of In-Stent Restenosis in Saphenous Venous Graft

To the best of our knowledge, this is the first description of intravascular-ultrasound guided coronary lithotripsy on saphenous vein graft because of severely calcific in-stent restenosis, showing good result without procedural complications.

Self-expanding transcatheter aortic valve infolding: Current evidence, diagnosis, and management

BACKGROUND

Prosthetic valve infolding is a rare but severe complication of transcatheter aortic valve implantation (TAVI) with self-expanding valves. However, currently available clinical data are limited and fragmented.

OBJECTIVES

This report aims to provide a comprehensive overview of this complication focusing on predisposing factors, clinical presentation, diagnostic findings, treatment and clinical outcomes.

METHODS

A systematic review of the literature was performed to identify cases of infolding occurring during TAVI with self-expanding valves published until August 2020. These data were pooled with all the retrospectively identified infolding cases occurred at San Raffaele Scientific Institute between December 2014 and August 2020.

RESULTS

A total of 34 cases were included. Among patients with available data, 38% received a first-generation CoreValve, and 62% a second-generation Evolut R (82%) or Evolut PRO (18%). Infolding occurred mostly with ≥29-mm valves (94%). Predisposing factors included resheathing of a second-generation valve (82%), heavy calcification of the native valve (65%), lack of predilatation (16%), Sievers type-1 bicuspid aortic valve (11%), and improper valve loading (5%). Infolding resulted in severe PVL causing hemodynamic instability (29%) or cardiac arrest (12%). Postdilatation was the treatment strategy in 68%, while prosthesis replacement with a new device in 23% of cases. Device success rate was 82%. Death and stroke occurred in 3% and 12% of cases.

CONCLUSIONS

Prosthetic valve infolding is typically observed after resheathing of a large-size self-expanding TAVI. When infolding is timely diagnosed, prosthesis removal and replacement should be pursued. Further studies are required to precisely define predisposing factors to prevent this complication.

[Acute coronary syndrome with unusual finding of double coronary occlusion, acute and chronic, of the left anterior descending coronary artery]

In patients with acute coronary syndrome, total chronic occlusion of a non-culprit vessel is a frequent angiographic finding (10-30%) and it is associated with increased mortality. The effective treatment of these lesions results in better outcomes, and procedural success depends partly on the anatomical features of the lesion. As indicated by current guidelines, the treatment of non-infarct-related artery lesions is not recommended in the acute setting, even in case of hemodynamic instability. We here report the case of a 57-year-old patient suffering from an acute coronary syndrome with double occlusion, acute and chronic, of the left anterior descending artery, both treated in the acute setting with good angiographic and clinical results.

P1781Burden of significant valvular heart disease in elderly patients presenting with acute coronary syndromes

Background

Elderly patients with acute coronary syndromes (ACS) represent a group seldom included in clinical trials and in whom robust data regarding mid-term impact of significant concomitant valvular heart disease are lacking.

Purpose

Our aim was to evaluate the impact of moderate-to-severe mitral regurgitation (MR), moderate-to-severe aortic stenosis (AS), or both conditions combined on a primary composite endpoint of mortality, myocardial infarction, disabling stroke and re-hospitalization for cardiovascular causes or bleeding within one year in a population of ACS patients included in the Elderly ACS 2 trial.

Methods

In the multicenter Elderly II ACS Study, 1,443 patients aged >74 y undergoing percutaneous coronary intervention (PCI) for ACS, were randomly assigned to receive prasugrel (5 mg) or clopidogrel (75 mg) and were prospectively followed for 1 year. Amongst these, 1,102 patients received full echocardiographic assessment and were included in the post-hoc analysis (Table 1).

Results

Survival analysis showed that patients presenting with moderate-to-severe MR, AS or both (Figure 1A), had worse outcome in terms of primary endpoint (p<0.001) as compared to no valve disease. A multivariable Cox regression model revealed that the presence of moderate-to-severe MR, AS or both were independent predictors of primary endpoint (HR 1.84; HR 2.8; HR 2.9 and p<0.001; p=0.004; p=0.01, respectively), regardless of age, gender, left ventricular ejection fraction, diabetes mellitus, history of cancer and total number of diseased vessels (Figure 1B).

Table 1 Overall No residual valvular heart disease Moderate-to-severe MR Moderate-to-severe AS Both Age (y) 80.68±4.50 80.40±4.42 81.47±4.45 82.92±5.42 83.23±5.42 Male gender 652 (59.2) 538 (61.6) 92 (48.4) 19 (73.1) 3 (23.1) STE-ACS 420 (38.1) 319 (36.5) 91 (47.9) 6 (23.1) 4 (30.8) Diabetes mellitus 203 (18.4) 158 (18.1) 35 (18.4) 5 (19.2) 5 (38.5) LVEF (%) 48.30±9.58 49.26±9.27 44.61±9.45 48.50±11.22 38.31±10.87 History of cancer 32 (2.9) 26 (3.0) 3 (1.6) 2 (7.7) 1 (7.7) Tot number of diseased vessel 2.31±1.05 2.28±1.04 2.49±1.05 2.04±0.87 2.54±1.13 Data are expressed as mean ± SD or count (valid %).

Figure 1

Conclusions

Moderate-to-severe MR and AS represent significant predictors of 1-year outcome in elderly patients hospitalized for ACS, even when other well-established prognostic factors are taken into account and after revascularization with PCI. Therefore, these patients should be carefully screened for the presence of valvular heart disease at the time of presentation and the need for surgical or percutaneous correction should be assessed accordingly.

Acknowledgement/Funding

None

[Therapeutic strategies in elderly patients with acute coronary syndromes]

Because of the aging of the population, the proportion of elderly patients admitted to the coronary care unit for an acute coronary syndrome (ACS) is increasing. Until a decade ago, treatment of elderly patients was based on poor scientific evidence, as older patients were commonly excluded from randomized controlled trials. In the last years, real-world registries and randomized controlled trials specifically addressing the older population have been published and provided clear evidence. Primary percutaneous angioplasty has become the standard of care for the treatment of ST-elevation myocardial infarction also in the elderly population, whereas the Italian Elderly ACS and the After Eighty randomized trials have demonstrated the superiority of an invasive strategy over an initial conservative strategy also in elderly patients affected by non-ST-elevation myocardial infarction. Moreover, real-world registries have shown that an increased use of early revascularization was associated with a progressive reduction in mortality after ACS: these findings have been confirmed also in a clinical context characterized by high mortality rates such as that of cardiogenic shock. As 80% of deaths after an ACS have been shown to be due to cardiovascular causes also in the elderly, the focus has been shifted to secondary prevention. Data regarding the use of both ticagrelor or low-dose prasugrel, as compared to clopidogrel, showed that a reduction of ischemic events was counterbalanced by an increase in bleeding events. In perspective, it might be interesting to explore the superiority of a strategy that limits the duration of dual antiplatelet therapy to a short period after an ACS (when the ischemic event rate is higher) in elderly patients, and to explore other endpoints such as mid-term quality of life outcome after ACS in elderly patients.