Clinical and radiological factors predicting stroke outcome after successful mechanical intervention in anterior circulation.

The recanalization effect of large-vessel occlusion (LVO) in anterior circulation is well documented but only some patients benefit from endovascular treatment. We analysed clinical and radiological factors determining clinical outcome after successful mechanical intervention. We included 146 patients from the Prague 16 study enrolled from September 2012 to December 2020, who had initial CT/CTA examination and achieved good recanalization status after mechanical intervention (TICI 2b-3). One hundred and six (73%) patients achieved a good clinical outcome (modified Rankin Scale 0-2 in 3 months). It was associated with age, leptomeningeal collaterals (LC), onset to intervention time, ASPECTS, initial NIHSS, and leukoaraiosis (LA) in univariate analysis. The regression model identified good collateral status [odds ratio (OR) 5.00, 95% confidence interval (CI) 1.91-13.08], late thrombectomy (OR 0.24, 95% CI 0.09-0.65), LA (OR 0.44, 95% CI 0.19-1.00), ASPECTS (OR 1.45, 95% CI 1.08-1.95), and NIHSS score (OR 0.86, 95% CI 0.78-0.95) as independent outcome determinants. In the late thrombectomy subgroup, 14 out of 33 patients (42%) achieved a favourable clinical outcome, none of whom with poor collateral status. The presence of LC and absence of LA predicts a good outcome in acute stroke patients after successful recanalization of LVO in anterior circulation. Late thrombectomy was associated with higher rate of unfavourable clinical outcome. Nevertheless, collateral status in this subgroup was validated as a reliable selection criterion.

Long-term outcomes of thrombectomy for acute ischaemic stroke by occluded artery and stroke aetiology: a PRAGUE-16 substudy.

BACKGROUND: Thrombectomy is an effective treatment for acute ischaemic stroke (AIS). AIMS: The aim of this study was to compare clinical outcomes with intracranial artery occlusion site among AIS patients treated in the setting of a cardiology cath lab. METHODS: This was a single-centre, prospective registry of 214 consecutive patients with AIS enrolled between 2012 and 2018. All thrombectomy procedures were performed in a cardiology cath lab with stent retrievers or aspiration systems. The functional outcome was assessed by the modified Rankin Scale (mRS) after three months. RESULTS: Ninety-three patients (44%) had middle cerebral artery (MCA) occlusion, 28 patients (13%) had proximal internal carotid artery (ICA) occlusion, 27 patients (13%) had tandem (ICA+MCA) occlusion, 39 patients (18%) had terminal ICA (T-type) occlusion, and 26 patients (12%) had vertebrobasilar (VB) stroke. Favourable clinical outcome (mRS ≤2) was reached in 58% of MCA occlusions and in 56% of isolated ICA occlusions, but in only 31% of T-type occlusions and in 27% of VB stroke. Poor clinical outcome in T-type occlusions and VB strokes was influenced by the lower recanalisation success (mTICI 2b-3 flow) rates: 56% (T-type) and 50% (VB) compared to 82% in MCA occlusions, 89% in isolated ICA occlusions and 96% in tandem occlusions. CONCLUSIONS: Catheter-based thrombectomy achieved significantly better clinical results in patients with isolated MCA occlusion, isolated ICA occlusions or tight stenosis and tandem occlusions compared to patients with T-type occlusion and posterior strokes. Visual summary. Endovascular intervention of isolated MCA or ICA occlusions provides greatest clinical benefit, while interventions in posterior circulation have lower chance for clinical success.

A contemporary approach to a young female patient with Loeys-Dietz syndrome and an uncomplicated type B aortic dissection: a case report.

BACKGROUND: Aortic dissection is a relatively uncommon, but often catastrophic disease that requires early and accurate diagnosis. It often presents in patients with congenital connective tissue disorders. The current aortic surgical techniques are related with serious early and late complications. This case report emphasizes the importance of early diagnosis of aortic root dilatation and the risk of dissection, especially in patients with congenital connective tissue disorders. We present an alternative, contemporary and multidisciplinary approach based on the present state of knowledge. CASE PRESENTATION: We present a rare case of a young female patient with Loeys-Dietz syndrome who was admitted with an uncomplicated aortic dissection (Stanford type B / DeBakey type III) and a dilated aortic root. After a period of close surveillance and extensive vascular imaging, thoracic endovascular aortic repair was deemed to be technically not possible. Medical treatment was optimized and our patient successfully underwent a personalised external aortic root support procedure (PEARS) as a contemporary alternative to existing aortic root surgical techniques. CONCLUSIONS: This case highlights the importance of interdisciplinary approach, close follow-up and multimodality imaging. The decision to intervene in a chronic type B aortic dissection is still challenging and should be made in experienced centers by an interdisciplinary team. However, if an acute complication occurs, thoracic endovascular aortic repair TEVAR is the method of choice. In all cases optimal medical treatment is important. There is increasing evidence that personalized external aortic root support procedure PEARS is effective in stabilizing the aortic root and preventing its dilatation and dissection not only in patients with Marfan syndrome, but also in other cases of aortic root dilation of other etiologies. Moreover, many publications have reported the additional benefit of reduction or even eradication of aortic regurgitation by improving coaptation of the aortic valve leaflets in dilated aortas.

Hyperuricemia treatment in acute heart failure patients does not improve their long-term prognosis: A propensity score matched analysis from the AHEAD registry.

BACKGROUND: Hyperuricemia is associated with a poorer prognosis in heart failure (HF) patients. Benefits of hyperuricemia treatment with allopurinol have not yet been confirmed in clinical practice. The aim of our work was to assess the benefit of allopurinol treatment in a large cohort of HF patients. METHODS: The prospective acute heart failure registry (AHEAD) was used to select 3160 hospitalized patients with a known level of uric acid (UA) who were discharged in a stable condition. Hyperuricemia was defined as UA ≥500 µmoL/L and/or allopurinol treatment at admission. The patients were classified into three groups: without hyperuricemia, with treated hyperuricemia, and with untreated hyperuricemia at discharge. Two- and five-year all-cause mortality were defined as endpoints. Patients without hyperuricemia, unlike those with hyperuricemia, had a higher left ventricular ejection fraction, a better renal function, and higher hemoglobin levels, had less frequently diabetes mellitus and atrial fibrillation, and showed better tolerance to treatment with angiotensin-converting enzyme inhibitors/angiotensin receptor blockers and/or beta-blockers. RESULTS: In a primary analysis, the patients without hyperuricemia had the highest survival rate. After using the propensity score to set up comparable groups, the patients without hyperuricemia had a similar 5-year survival rate as those with untreated hyperuricemia (42.0% vs 39.7%, P = 0.362) whereas those with treated hyperuricemia had a poorer prognosis (32.4% survival rate, P = 0.006 vs non-hyperuricemia group and P = 0.073 vs untreated group). CONCLUSION: Hyperuricemia was associated with an unfavorable cardiovascular risk profile in HF patients. Treatment with low doses of allopurinol did not improve the prognosis of HF patients.

Feasibility and safety of direct catheter-based thrombectomy in the treatment of acute ischaemic stroke. Cooperation among cardiologists, neurologists and radiologists. Prospective registry PRAGUE-16.

AIMS: The aim of this study was to evaluate the role of direct catheter-based thrombectomy (d-CBT, without thrombolysis) and the feasibility and safety of d-CBT performed in an interventional cardiology centre. METHODS AND RESULTS: This single-centre, prospective observational registry based on the pre-specified protocol included three months of follow-up. The decision to perform acute stroke intervention was made by a neurologist based on the clinical and imaging findings. Inclusion criteria were moderate-to-severe acute ischaemic stroke (NIHSS ≥6), <6 hours from symptom onset, no large ischaemia on the admission CT scan and CT evidence for an occluded large artery. The primary outcome was functional neurologic recovery (mRS 0-2) at three months. Key secondary outcomes were the angiographic recanalisation rate and symptomatic intracranial bleeding. A total of 115 consecutive patients (mean age 66 years) were enrolled during a period of four years: 84 patients underwent d-CBT and 31 patients bridging thrombolysis with immediate catheter intervention (TL-CBT). The annual number of procedures increased from 13 (initial 12 months) to 41 (last 12 months). Angiographic success (TICI flow 2b-3) was 69% after d-CBT and 81% after TL-CBT. It was higher in isolated occlusions of the middle cerebral artery (MCA, 74% and 100%) or of the proximal internal carotid artery (ICA, 80% and 100%), while it was lower in combined ICA+MCA occlusions (63% and 70%) and in basilar or vertebral occlusions (57% and 50%). Neurologic recovery (mRS ≤2 after 90 days) was achieved in 40% of patients. It was higher (43%) in anterior circulation strokes than in posterior circulation strokes (25%). Direct CBT led to neurologic recovery in 36%, while in TL-CBT this was 52%. Best clinical outcomes (51% and 71% neurologic recovery rates) were achieved among patients with isolated MCA occlusion. Any symptomatic intracranial bleeding was present in 3.6% (d-CBT) and 6.5% (TL-CBT). Vessel perforation or major dissection occurred in 5.2% overall, and distal embolisation to other territory in 3.5% of patients. CONCLUSIONS: Direct catheter-based thrombectomy may be considered in patients with contraindications for thrombolysis or in patients with very short CT-groin puncture times. A randomised trial is needed to evaluate better the role of direct catheter-based thrombectomy. Acute stroke interventions performed in close cooperation among cardiologists, neurologists and radiologists are feasible and safe.

Positive influence of being overweight/obese on long term survival in patients hospitalised due to acute heart failure.

BACKGROUND: Obesity is clearly associated with increased morbidity and mortality rates. However, in patients with acute heart failure (AHF), an increased BMI could represent a protective marker. Studies evaluating the "obesity paradox" on a large cohort with long-term follow-up are lacking. METHODS: Using the AHEAD database (a Czech multi-centre database of patients hospitalised due to AHF), 5057 patients were evaluated; patients with a BMI <18.5 kg/m2 were excluded. All-cause mortality was compared between groups with a BMI of 18.5-25 kg/m2 and with BMI >25 kg/m2. Data were adjusted by a propensity score for 11 parameters. RESULTS: In the balanced groups, the difference in 30-day mortality was not significant. The long-term mortality of patients with normal weight was higher than for those who were overweight/obese (HR, 1.36; 95% CI, 1.26-1.48; p<0.001)). In the balanced dataset, the pattern was similar (1.22; 1.09-1.39; p<0.001). A similar result was found in the balanced dataset of a subgroup of patients with de novo AHF (1.30; 1.11-1.52; p = 0.001), but only a trend in a balanced dataset of patients with acute decompensated heart failure. CONCLUSION: These data suggest significantly lower long-term mortality in overweight/obese patients with AHF. The results suggest that at present there is no evidence for weight reduction in overweight/obese patients with heart failure, and emphasize the importance of prevention of cardiac cachexia.

Age-related treatment strategy and long-term outcome in acute myocardial infarction patients in the PCI era.

BACKGROUND: Older age, as a factor we cannot affect, is consistently one of the main negative prognostic values in patients with acute myocardial infarction. One of the most powerful factors that improves outcomes in patients with acute coronary syndromes is the revascularization preferably performed by percutaneous coronary intervention. No data is currently available for the role of age in large groups of consecutive patients with PCI as the nearly sole method of revascularization in AMI patients. The aim of this study was to analyze age-related differences in treatment strategies, results of PCI procedures and both in-hospital and long-term outcomes of consecutive patients with acute myocardial infarction. METHODS: Retrospective multicenter analysis of 3814 consecutive acute myocardial infarction patients divided into two groups according to age (1800 patients ≤ 65 years and 2014 patients > 65 years). Significantly more older patients had a history of diabetes mellitus and previous myocardial infarctions. RESULTS: The older population had a significantly lower rate of coronary angiographies (1726; 95.9% vs. 1860; 92.4%, p < 0.0001), PCI (1541; 85.6% vs. 1505; 74.7%, p < 0.001), achievement of optimal final TIMI flow 3 (1434; 79.7% vs. 1343; 66.7%, p < 0.001) and higher rate of unsuccessful reperfusion with final TIMI flow 0-1 (46; 2.6% vs. 78; 3.9%, p = 0.022). A total of 217 patients (5.7%) died during hospitalization, significantly more often in the older population (46; 2.6% vs. 171; 8.5%, p < 0.001). The long-term mortality (data for 2847 patients from 2 centers) was higher in the older population as well (5 years survival: 86.1% vs. 59.8%). Though not significantly different and in contrast with PCI, the presence of diabetes mellitus, previous MI, final TIMI flow and LAD, as the infarct-related artery, had relatively lower impact on the older patients. Severe heart failure on admission (Killip III-IV) was associated with the worst prognosis in the whole group of patients, though its significance was higher in the youngers (HR 6.04 vs. 3.14, p = 0.051 for Killip III and 12.24 vs. 5.65, p = 0.030 for Killip IV). We clearly demonstrated age as a strong discriminator for the whole population of AMI patients. CONCLUSIONS: In a consecutive AMI population, the older group (>65 years) was associated with a less pronounced impact of risk factors on long-term outcome. To ascertain the coronary anatomy by coronary angiography and proceed to PCI if suitable regardless of age is crucial in all patients, though the primary success rate of PCI in the older age is lower. Age, when viewed as a risk factor, was a dominant discriminating factor in all patients.

Primary angioplasty in acute myocardial infarction with right bundle branch block: should new onset right bundle branch block be added to future guidelines as an indication for reperfusion therapy?

AIMS: The current guidelines recommend reperfusion therapy in acute myocardial infarction (AMI) with ST-segment elevation or left bundle branch block (LBBB). Surprisingly, the right bundle branch block (RBBB) is not listed as an indication for reperfusion therapy. This study analysed patients with AMI presenting with RBBB [with or without left anterior hemiblock (LAH) or left posterior hemiblock (LPH)] and compared them with those presenting with LBBB or with other electrocardiographic (ECG) patterns. The aim was to describe angiographic patterns and primary angioplasty use in AMI patients with RBBB. METHODS AND RESULTS: A cohort of 6742 patients with AMI admitted to eight participating hospitals was analysed. Baseline clinical characteristics, ECG patterns, coronary angiographic, and echocardiographic data were correlated with the reperfusion therapies used and with in-hospital outcomes. Right bundle branch block was present in 6.3% of AMI patients: 2.8% had RBBB alone, 3.2% had RBBB + LAH, and 0.3% had RBBB + LPH. TIMI flow 0 in the infarct-related artery was present in 51.7% of RBBB patients vs. 39.4% of LBBB patients (P = 0.023). Primary percutaneous coronary intervention (PCI) was performed in 80.1% of RBBB patients vs. 68.3% of LBBB patients (P< 0.001). In-hospital mortality of RBBB patients was similar to LBBB (14.3 vs. 13.1%, P = 0.661). Patients with new or presumably new blocks had the highest (LBBB 15.8% and RBBB 15.4%) incidence of cardiogenic shock from all ECG subgroups. Percutaneous coronary intervention was done more frequently (84.8%) in patients with new or presumably new RBBB when compared with other patients with blocks (old RBBB 66.0%, old LBBB 62.3%, new or presumably new LBBB 73.0%). In-hospital mortality was highest (18.8%) among patients presenting with new or presumably new RBBB, followed by new or presumably new LBBB (13.2%), old LBBB (10.1%), and old RBBB (6.4%). Among 35 patients with acute left main coronary artery occlusion, 26% presented with RBBB (mostly with LAH) on the admission ECG. CONCLUSION: Acute myocardial infarction with RBBB is frequently caused by the complete occlusion of the infarct-related artery and is more frequently treated with primary PCI when compared with AMI + LBBB. In-hospital mortality of patients with AMI and RBBB is highest from all ECG presentations of AMI. Restoration of coronary flow by primary PCI may lead to resolution of the conduction delay on the discharge ECG. Right bundle branch block should strongly be considered for listing in future guidelines as a standard indication for reperfusion therapy, in the same way as LBBB.

Routine upfront abciximab versus standard periprocedural therapy in patients undergoing primary percutaneous coronary intervention for cardiogenic shock: The PRAGUE-7 Study. An open randomized multicentre study.

BACKGROUND: The outcome of acute myocardial infarction (AMI) complicated with cardiogenic shock is poor. The aim of this study was to analyse, whether upfront abciximab administration could improve the outcomes of cardiogenic shock. METHODS: This multicentre open trial randomized 80 patients with AMI complicated by cardiogenic shock expected to undergo primary PCI into group A (routine upfront-pre-procedural-abciximab bolus followed by 12-h abciximab infusion) and group B (standard therapy). The study primary objective was 30-day combined outcome (death/reinfarction/stroke/new severe renal failure). RESULTS: PCI was technically successful in 90% (A) versus 87.5% (B) patients. Abciximab was used in 100% (A) versus 35% (B). The primary endpoint occurred in 17 group A patients (42.5%) and 11 group B patients (27.5%, P = 0.24). Ejection fraction among survivors after 30 days was 44 ± 11% (A) versus 41 ± 12% (B, P = 0.205). Major bleeding occurred in 17.5% (A) versus 7.5% (B, P = 0.310). No differences (A versus B) were found in TIMI-flow and MBG after PCI. CONCLUSIONS: This study did not show any benefit from routine pre-procedural abciximab when compared with a selective abciximab use during the intervention in patients with cardiogenic shock undergoing primary PCI. However, small sample size of the trial preclude any definitive conclusion, a larger prospective, randomized, multicentered trial is needed.