Early beneficial effects of drug-eluting stents in vein grafts wane during long term follow-up: a case-control study.

OBJECTIVES: The aim of the study was to compare outcomes of drug-eluting stents (DES) versus bare-metal stents (BMS) in saphenous vein graft (SVG) interventions in a case-control study with a long-term follow-up. BACKGROUND: Safety and efficacy of DES in SVG interventions are still controversial. METHODS: We performed a multicenter registry assessing clinical outcomes with DES vs. BMS. We included 311 patients (239 men, age 68 ± 8 years) who underwent percutaneous coronary interventions (PCI) of SVG lesions with DES (n = 138) or BMS (n = 173) with a 2-year follow-up. RESULTS: The two groups were similar for age, sex, main risk factors, incidence of diabetes, use of IIb/IIIa antagonists, use of aspiration devices or filters, number of stents, and total stent length. Overall, at 9 months follow-up incidence of major adverse cardiac events (MACE) and target vessel revascularization (TVR) were significantly lower in the DES group compared with the BMS group (10.9% vs. 22.0%, P = 0.014 and 8.7% vs. 19.1% in DES and BMS respectively, P = 0.015), while there was no significant difference in incidence of myocardial infarction (5.1% vs. 5.2%, P = 0.96) or death (2.2% vs. 4%, respectively, P = 0.54). However, at 24-month follow-up incidence of MACE was 29.7% in the DES group and 37.0% in BMS group (P = 0.29); incidence of TVR (23.2% vs. 28.9% P = 0.39), myocardial infarction (9.4% vs. 9.2%), death (7.2% vs. 6.9%) were also similar in the two groups. CONCLUSIONS: Although DES appear safe, our findings suggest that the early benefit of DES in SVG may rapidly wane during long-term follow-up.

Manual versus nonmanual thrombectomy in primary and rescue percutaneous coronary angioplasty.

Although many thrombectomy devices have been tested in ST-segment elevation acute myocardial infarction (STEMI), there are no comparative data on safety or effectiveness in thrombectomy or ST-segment resolution. This study compares manual versus nonmanual thrombectomy devices in patients undergoing primary or rescue percutaneous coronary intervention in a tertiary care center. We identified 232 consecutive patients with STEMI and time from symptom onset to emergency room contact of < or = 12 h undergoing percutaneous coronary intervention with coronary thrombectomy devices. Primary end point was ST-segment resolution of > or = 70%. Several angiographic, procedural and clinical secondary end points were also evaluated. The manual thrombectomy group included 110 patients and the nonmanual group 122 patients. Both groups were similar in their clinical characteristics. The primary end point occurred with similar frequency in patients treated with manual versus nonmanual thrombectomy (67.9% vs 60.0%, P = 0.216). No significant differences were found in the two groups with regard to procedural complications, angiographic reperfusion parameters, in-hospital major adverse cardiac events, or infarct size, whereas manual thrombectomy was associated with a better left ventricle ejection fraction at discharge. Furthermore, treatment with a manual thrombectomy device was associated with significantly shorter procedural times (69 min vs 95 min, P < 0.001) and lower procedural costs (2981 euros vs 7505 euros, P < 0.001). The use of manual thrombus-aspiration catheters appeared equivalent to nonmanual thrombectomy devices in the setting of primary or rescue percutaneous intervention in terms of clinical efficacy, and led to shorter procedures and cost savings.

The combined use of Drug-eluting balloon and Excimer laser for coronary artery Restenosis In-Stent Treatment: The DERIST study.

AIM: Stents reduce angiographic restenosis in comparison with balloon angioplasty. The rate of in-stent restenosis (ISR), although less frequent than post-angioplasty restenosis, is becoming increasingly prevalent due to the recent exponential increase in the use of intracoronary stents. The aim of this study is to evaluate angiographic and clinical outcomes of PTCA in combination with the use of excimer laser coronary angioplasty (ELCA) and drug-eluting balloon (DEB) in treatment of in-stent restenosis (ISR). METHODS AND RESULTS: This multi-centric case-control study evaluated angiographic and clinical outcomes of PTCA with excimer laser coronary angioplasty (ELCA) and drug-eluting balloon (DEB) in 80 patients with in-stent restenosis (ISR). All patients underwent nine months of clinical and a coronary angiography follow-up. This study showed clinical and angiographic long-term success in the 91% of the patients. The incidence of myocardial infarctions and deaths was lower than the rate after plain balloon angioplasty within the stent. CONCLUSIONS: This study showed that excimer laser coronary angioplasty (ELCA) and drug-eluting balloon (DEB) may be an alternative treatment for in-stent restenosis (ISR).

[Rheolytic percutaneous thrombectomy with Angiojet (Possis) catheter in acute coronary syndromes. Report of 3 cases and technical considerations]. / La trombectomia percutanea di tipo reolitico con catetere Angiojet (Possis) nelle sindromi coronariche acute. Presentazione di tre casi e considerazioni tecniche.

Mechanical thrombolysis in acute coronary syndromes is poorly understood and is still considerably underused in interventional cardiology. The authors report 3 cases of thrombotic coronary obstruction successfully treated with the Possis Angiojet system. In the first case, coronary angiography which demonstrated a large subocclusive thrombus in the mid right coronary artery was performed in a patient with unstable angina following acute myocardial infarction. Removal of the bulk of the thrombus through the activation of the Angiojet system allowed safe and direct stenting of the residual obstruction. In the second case, the Angiojet system was used to remove a thrombus which prolapsed within a stent during a primary angioplasty procedure on the left anterior descending coronary artery. The third case demonstrates the efficacy of the Possis Angiojet system in cleaning up an extensively thrombosed vein graft of an elderly patient with acute anterior myocardial infarction and cardiogenic shock. After thrombus debulking and restoration of TIMI 3 flow in the graft and in the native left anterior descending coronary artery, the left ventricular function was restored and the hemodynamic picture improved. This technique, the indications and results of this promising new device are discussed and reviewed in detail.

Immediate and midterm follow-up results of excimer laser application in complex percutaneous coronary interventions: Report from a single center experience.

OBJECTIVE: To assess the efficacy and safety of laser-assisted percutaneous coronary interventions (PCI) in an unselected population. METHODS: One hundred consecutive patients, who underwent a laser assisted PCI between January 2008 and March 2012, were included in the present study. Fifty-one patients underwent laser ablation for thrombus vaporization (Group 1), 36 patients for neointima/plaque debulking (Group 2) and 13 patients for lesion compliance modification in calcified lesions (Group 3). RESULTS: The rate of in-hospital serious events was 2%. The cumulative laser success was 82%, and it was significantly higher for Group 1 and Group 2 in comparison with Group 3 (p = 0.001). Furthermore, the need for repeat revascularization was significantly higher in the Group 3 compared with the others two groups (46% vs. 8% for Group 1 and 11% for Group 2, p = 0.03). The MACE rate was 14%. There was a trend toward a higher MACE rate in the Group 3 compared with others two groups (p = 0.05). CONCLUSIONS: Laser ablation is an effective and safe tool for complex PCI. Patients underwent laser for thrombus vaporization or for neointima/plaque debulking had better immediate success and better outcome at follow-up than patients underwent laser for lesion compliance modification.

[Manual thrombus aspiration with the Export catheter during primary and rescue angioplasty. Predictors of failed myocardial reperfusion]. / Trombo-aspirazione manuale con catetere Export nell'angioplastica primaria e di salvataggio. Predittori di mancata riperfusione miocardica.

BACKGROUND: Manual thrombus aspiration seems to improve myocardial reperfusion after coronary angioplasty in patients with ST-elevation acute coronary syndrome. We sought to assess the independent variables of complete myocardial reperfusion after primary and rescue coronary angioplasty with use of the Export manual thrombus aspiration catheter. METHODS: Myocardial reperfusion were judged complete if ST-segment resolution were >70% at 60 min post-procedure ECG. Sixty-three consecutive patients undergoing primary (81%) or rescue angioplasty (19%) with use of the Export catheter were analyzed. RESULTS: Forty-three (68%) patients had a complete myocardial reperfusion and 20 (32%) patients did not. The independent predictors of failed myocardial reperfusion, at multivariate analysis, were: heart rate at hospital admission (odds ratio [OR] 1.05; 95% confidence interval [CI] 1.01-1.09; p = 0.007), time to angioplasty >3 h (OR 6.07; 95% CI 1.31-27.97; p = 0.005), left anterior descending coronary artery involvement (OR 8.8; 95% CI 2.12-36.4; p = 0.003). CONCLUSIONS: The present study shows that in the setting of primary or rescue angioplasty with use of Export manual thrombus aspiration catheter, patients with high heart rate on admission, an ischemic time >3 h and left anterior descending coronary artery involvement are at higher risk of failed myocardial reperfusion.