BACKGROUND: It is unclear whether more effective forms of thrombus removal than current aspiration catheters would lead to improved outcomes. We sought to evaluate the prognostic role of residual thrombus burden (rTB), after manual thrombectomy, in patients undergoing primary percutaneous coronary intervention with routine manual thrombectomy in the TOTAL trial (Thrombectomy Versus PCI Alone). METHODS: This is a single-arm analysis of patients from the TOTAL trial who underwent routine manual aspiration thrombectomy. The rTB was quantified by an angiographic core laboratory using the Thrombolysis in Myocardial Infarction criteria and validated using existing optical coherent tomography data. Large rTB was defined as grade ≥3. The primary outcome was death from cardiovascular causes, recurrent myocardial infarction, cardiogenic shock, or new or worsening heart failure within 180 days. RESULTS: Of 5033 patients randomized to routine thrombectomy, 2869 patients had quantifiable rTB (1014 [35%] had large rTB). Patients with large rTB were more likely to have hypertension, previous percutaneous coronary intervention, myocardial infarction, or Killip class III on presentation but less likely to have Killip class I. The primary outcome occurred more frequently in patients with large rTB, even after adjustment for known risk predictors (8.6% versus 4.6%; adjusted hazard ratio, 1.83 [95% CI, 1.34-2.48]). These patients also had a higher risk of cardiovascular death (adjusted hazard ratio, 1.83 [95% CI, 1.13-2.95]), cardiogenic shock (adjusted hazard ratio, 2.02 [95% CI, 1.08-3.76]), and heart failure (adjusted hazard ratio, 1.74 [95% CI, 1.02-2.96]) but not myocardial infarction or stroke. CONCLUSIONS: Large rTB is a common finding in primary percutaneous coronary intervention and is associated with increased risk of adverse cardiovascular outcomes, including cardiovascular death. Future technologies offering better thrombus removal than current devices may decrease or even eliminate the risk associated with rTB. This, potentially, can turn into a strategic option to be studied in clinical trials. REGISTRATION: URL: https://www. CLINICALTRIALS: gov; Unique identifier: NCT01149044.

• Klíčová slova
• ST-segment–elevation myocardial infarction, cardiovascular death, heart failure, myocardial infarction, prognosis, thrombectomy,
• MeSH
• infarkt myokardu * komplikace   diagnostické zobrazování   terapie   MeSH
• kardiogenní šok etiologie   terapie   MeSH
• koronární angioplastika * MeSH
• koronární trombóza * diagnostické zobrazování   terapie   MeSH
• lidé MeSH
• prognóza MeSH
• srdeční selhání * diagnostické zobrazování   terapie   MeSH
• trombektomie škodlivé účinky   metody   MeSH
• výsledek terapie MeSH
• Check Tag
• lidé MeSH
• Publikační typ
• časopisecké články MeSH
• práce podpořená grantem MeSH
• randomizované kontrolované studie MeSH

• MeSH
• aorta * MeSH
• diferenciální diagnóza MeSH
• dyspnoe etiologie   MeSH
• infarkt myokardu komplikace   diagnóza   diagnostické zobrazování   MeSH
• koronární angiografie MeSH
• koronární cévy patologie   MeSH
• lidé středního věku MeSH
• lidé MeSH
• nepravé aneurysma komplikace   diagnóza   diagnostické zobrazování   MeSH
• Check Tag
• lidé středního věku MeSH
• lidé MeSH
• ženské pohlaví MeSH
• Publikační typ
• časopisecké články MeSH
• kazuistiky MeSH

Takotsubo or broken heart syndrome represents a rare type of cardiomyopathy, often imitating acute myocardial infarction. It is a sudden transient cardiac syndrome that typically involves left ventricular apical akinesis with preserved motility of basal heart segments. In contrast to acute myocardial infarction, the pathology is fully reversible in the majority of patients. In the present casereport, we discuss 78yearsold female referred to our department for typical symptomatology of acute myocardial infarction. Coronary angiography revealed significant stenosis on the left anterior descending coronary artery, but ventriculography disclosed apical dysfunction and clinical course of the disease result in the diagnosis of Takotsubo cardiomyopathy. Until recently, normal or nonobstructive coronary angiography represented one of the mean diagnostic features of Takotsubo cardiomyopathy. In 2018, new diagnostic criteria were introduced, importantly modifying our approach to the Takotsubo diagnostics with omitting a coronary lesion as an exclusion criterium of the Takotsubo cardiomyopathy.

• Klíčová slova
• acute myocardial infarction, InterTAK Diagnostic criteria, Takotsubo cardiomyopathy,
• MeSH
• diferenciální diagnóza MeSH
• elektrokardiografie MeSH
• infarkt myokardu * diagnostické zobrazování   MeSH
• koronární angiografie MeSH
• lidé MeSH
• takotsubo kardiomyopatie * diagnostické zobrazování   MeSH
• Check Tag
• lidé MeSH
• ženské pohlaví MeSH
• Publikační typ
• časopisecké články MeSH
• kazuistiky MeSH

The development of left ventricular thrombus (LVT) is a well-known and serious complication of acute myocardial infarction (AMI) due to the risk of systemic arterial embolism (SE), which is variable in its clinical picture and has potentially serious consequences depending on the extent of target organ damage. SE results in an increase in mortality and morbidity in these patients. LVT is one of the main causes of the development of ischaemic cardio-embolic cardiovascular events (CVE) after MI and the determination of the source of cardiac embolus is crucial for the initiation of adequate anticoagulant therapy in secondary prevention. Echocardiography holds an irreplaceable place in the diagnosis of LVT, contrast enhancement provides higher sensitivity. The gold standard for LVT diagnosis is cardiac magnetic resonance imaging, but it is not suitable as a basic screening test. In patients with already diagnosed LVT, it is necessary to adjust antithrombotic therapy by starting warfarin anticoagulation for at least 6 months with the need for echocardiographic follow-up to detect thrombotic residues. The effect of prophylactic administration of warfarin in high-risk patients after anterior AMI does not outweigh the risk of severe bleeding complications and does not result in a decrease in mortality and morbidity. At the present time, there is not enough evidence to use direct oral anticoagulants in this indication.

• Klíčová slova
• ST segment elevation myocardial infarction, left ventricular thrombus, stroke, systemic arterial embolism, therapy,
• MeSH
• embolie diagnostické zobrazování   terapie   MeSH
• infarkt myokardu komplikace   diagnostické zobrazování   terapie   MeSH
• koronární angioplastika MeSH
• koronární trombóza komplikace   diagnostické zobrazování   terapie   MeSH
• lidé MeSH
• srdeční komory MeSH
• Check Tag
• lidé MeSH
• Publikační typ
• časopisecké články MeSH
• přehledy MeSH

In stable ventricular tachycardia (VT), activation mapping and entrainment mapping are the most important strategies to describe the reentrant circuit and its critical components. In many patients, however, VT is noninducible or hemodynamically unstable and unmappable. Several technological advances have broadened ablation options in unmappable VTs. Preprocedural imaging and intraprocedural imaging play an important role in location and extent of the substrate. Electroanatomic mapping with several technological improvements allows more precise electrical assessment of the substrate. A combination of imaging and electroanatomic mapping allows substantial modification of arrhythmogenic substrate in sinus rhythm or during device pacing without hemodynamic compromise.

• Klíčová slova
• Arrhythmia substrate, Cardiac imaging, Catheter ablation, Electroanatomic mapping, Mechanical circulatory support, Ventricular fibrillation, Ventricular tachycardia,
• MeSH
• algoritmy MeSH
• elektrofyziologické techniky kardiologické * MeSH
• elektrokardiografie MeSH
• infarkt myokardu * diagnostické zobrazování   patofyziologie   chirurgie   MeSH
• kardiologické zobrazovací techniky MeSH
• katetrizační ablace * MeSH
• komorová tachykardie * diagnostické zobrazování   patofyziologie   chirurgie   MeSH
• lidé MeSH
• magnetická rezonanční tomografie MeSH
• Check Tag
• lidé MeSH
• Publikační typ
• časopisecké články MeSH
• přehledy MeSH

• MeSH
• atrioventrikulární blokáda komplikace   diagnóza   terapie   MeSH
• elektrokardiografie * MeSH
• Hisův svazek MeSH
• infarkt myokardu komplikace   diagnostické zobrazování   chirurgie   MeSH
• kardiostimulace umělá * MeSH
• koronární angiografie MeSH
• koronární angioplastika * MeSH
• lidé MeSH
• senioři nad 80 let MeSH
• Check Tag
• lidé MeSH
• senioři nad 80 let MeSH
• Publikační typ
• časopisecké články MeSH
• kazuistiky MeSH

BACKGROUND: High-sensitivity cardiac troponin T (hs-cTnT) blood concentrations were shown to exhibit a diurnal rhythm, characterized by gradually decreasing concentrations throughout daytime, rising concentrations during nighttime and peak concentrations in the morning. We aimed to investigate whether this also applies to (h)s-cTnI assays and whether it would affect diagnostic accuracy for acute myocardial infarction (AMI). METHODS: Blood concentrations of cTnI were measured at presentation and after 1 h using four different cTnI assays: three commonly used sensitive (s-cTnI Architect, Ultra and Accu) and one experimental high-sensitivity assay (hs-cTnI Accu) in a prospective multicenter diagnostic study of patients presenting to the emergency department with suspected AMI. These concentrations and their diagnostic accuracy for AMI (quantified by the area under the curve (AUC)) were compared between morning (11 p.m. to 2 p.m.) and evening (2 p.m. to 11 p.m.) presenters. RESULTS: Among 2601 patients, AMI was the final diagnosis in 17.6% of patients. Concentrations of (h)s-cTnI as measured using all four assays were comparable in patients presenting in the morning versus patients presenting in the evening. Diagnostic accuracy for AMI of all four (h)s-cTnI assays were high and comparable between patients presenting in the morning versus presenting in the evening (AUC at presentation: 0.90 vs 0.93 for s-cTnI Architect; 0.91 vs 0.94 for s-cTnI Ultra; 0.89 vs 0.94 for s-cTnI Accu; 0.91 vs 0.94 for hs-cTnI Accu). CONCLUSIONS: Cardiac TnI does not seem to express a diurnal rhythm. Diagnostic accuracy for AMI is very high and does not differ with time of presentation. CLINICAL TRIAL REGISTRATION: NCT00470587, http://clinicaltrials.gov/show/NCT00470587.

• Klíčová slova
• Acute myocardial infarction, Circadian rhythm, Diagnosis, High-sensitivity cardiac troponin I,
• MeSH
• biologické markery krev   MeSH
• cirkadiánní rytmus fyziologie   MeSH
• infarkt myokardu krev   diagnostické zobrazování   MeSH
• lidé středního věku MeSH
• lidé MeSH
• následné studie MeSH
• prospektivní studie MeSH
• senioři MeSH
• troponin I krev   MeSH
• Check Tag
• lidé středního věku MeSH
• lidé MeSH
• mužské pohlaví MeSH
• senioři MeSH
• ženské pohlaví MeSH
• Publikační typ
• časopisecké články MeSH
• klinické zkoušky MeSH
• multicentrická studie MeSH
• Názvy látek
• biologické markery MeSH
• troponin I MeSH

AIMS: Transradial catheterization (TRC) is a dominant access site for coronary catheterization and percutaneous coronary interventions (PCI) in many centers. Previous studies reported higher intimal thickness of the radial artery (RA) wall in patients with a previous history of TRC. In this investigation the aim was to assess the intimal changes of RA using the optical coherence tomography (OCT) intravascular imaging in a serial manner. METHODS AND RESULTS: 100 patients with the diagnosis of non-ST-elevation myocardial infarction (nSTEMI) treated by PCI were enrolled (6 patients were excluded from this analysis because of occluded RA at follow-up [2 patients] and insufficient quality of OCT images [4 patients]). An 54mm long OCT run of the RA was performed immediately after the index PCI and repeated 9 months later. Volumetric analyses of the intimal layer and lumen changes were conducted. Median intimal volume at baseline versus 9 months was 33.9mm3 (19.0; 69.4) versus 39.0mm3 (21.7; 72.6) (p<0.001); and median arterial lumen volume was 356.3mm3 (227.8; 645.3) versus 304.7mm3 (186.1; 582.7) (p<0.001). There was no significant difference in the effect of any clinical factor on the RA volume changes. CONCLUSIONS: OCT volumetric analyses at baseline and 9 months showed a significant increase in the radial artery intimal layer volume and a decrease in lumen volume after transradial PCI. No significant factors affecting this process were identified.

• MeSH
• arteria radialis diagnostické zobrazování   patofyziologie   MeSH
• hyperplazie diagnostické zobrazování   etiologie   patofyziologie   MeSH
• infarkt myokardu diagnostické zobrazování   patofyziologie   terapie   MeSH
• koronární angiografie škodlivé účinky   metody   MeSH
• koronární angioplastika škodlivé účinky   MeSH
• lidé středního věku MeSH
• lidé MeSH
• neointima diagnostické zobrazování   patofyziologie   MeSH
• optická koherentní tomografie * MeSH
• senioři nad 80 let MeSH
• senioři MeSH
• srdeční katetrizace škodlivé účinky   MeSH
• tunica intima diagnostické zobrazování   patofyziologie   MeSH
• Check Tag
• lidé středního věku MeSH
• lidé MeSH
• mužské pohlaví MeSH
• senioři nad 80 let MeSH
• senioři MeSH
• ženské pohlaví MeSH
• Publikační typ
• časopisecké články MeSH

The accepted definition of virtual histology intravascular ultrasound (IVUS-VH) thin-cap fibroatheroma (TCFA) is only a modest predictor of plaque rupture (PR). We sought to determine the relation between IVUS-VH findings and culprit lesions with PR using computational analysis. A total of 80 culprit lesions from 80 patients with stable angina (n = 37), unstable angina (n = 20), and myocardial infarction (n = 23) were divided into those with (n = 15) and without PR (n = 65). By use of automated computational analysis, the standard IVUS-VH TCFA criterion and 124 additional criteria were compared. The standard TCFA definition demonstrated modest ability to discriminate lesions with and without PR (sensitivity 87%, specificity 37%, PPV 0.24, and NPV 0.92). Of 124 additional IVUS-VH TCFA definitions, only 2 improved the discriminative ability even modestly. However, a positive correlation was demonstrated between cavity size and necrotic core percentage (r = 0.78, p <0.01) and a negative correlation with percentage of fibrous tissue (r = -0.81, p <0.01). In conclusion, IVUS-VH criteria were only modestly associated with PR, without significant improvement by varying IVUS-VH TCFA features, but IVUS-VH features of ruptured plaques were strongly correlated with cavity size.

• MeSH
• aterosklerotický plát diagnostické zobrazování   patologie   MeSH
• fibróza MeSH
• infarkt myokardu diagnostické zobrazování   chirurgie   MeSH
• intervenční ultrasonografie MeSH
• kalcinóza diagnostické zobrazování   patologie   MeSH
• lidé středního věku MeSH
• lidé MeSH
• nekróza MeSH
• nemoci koronárních tepen diagnostické zobrazování   chirurgie   MeSH
• nestabilní angina pectoris diagnostické zobrazování   chirurgie   MeSH
• retrospektivní studie MeSH
• senioři MeSH
• spontánní ruptura diagnostické zobrazování   MeSH
• stabilní angina pectoris diagnostické zobrazování   chirurgie   MeSH
• Check Tag
• lidé středního věku MeSH
• lidé MeSH
• mužské pohlaví MeSH
• senioři MeSH
• ženské pohlaví MeSH
• Publikační typ
• časopisecké články MeSH
• práce podpořená grantem MeSH
• Research Support, N.I.H., Extramural MeSH

BACKGROUND: Bioresorbable vascular scaffolds (BVS) represent promising new technology, but data on their long-term outcomes in ST-segment-elevation myocardial infarction (STEMI) setting are missing. The aim was to analyze 1-year clinical and computed tomographic angiographic outcomes after BVS implantation in STEMI. METHODS AND RESULTS: PRAGUE-19 is a prospective multicenter single-arm study enrolling consecutive STEMI patients undergoing primary percutaneous coronary intervention (pPCI) with intention-to-implant BVS. A total of 343 STEMI patients were screened during 15 months enrollment period, and 70 patients (mean age 58.6±10.3 and 74% males) fulfilled entry criteria and BVS was successfully implanted in 96% of them. All patients were invited for clinical and computed tomographic angiographic control 1 year after BVS implantation. Restenosis was defined as ≥75% area stenosis within the scaffolded segment. Three events were potentially related to BVS: 1 in-stent restenosis (treated 7 months after pPCI with drug-eluting balloon), 1 stent thrombosis (treated 2 weeks after pPCI by balloon dilatation-this patient stopped all medications after pPCI), and 1 sudden death at home 9 months after pPCI. Four other patients had events definitely unrelated to BVS. Overall, 1-year mortality was 2.9%. Computed tomographic angiography after 1 year was performed in 59 patients. All BVS were widely patent, and binary restenosis rate was 2% (the only restenosis mentioned above). Mean in-scaffold minimal luminal area was 7.8±2.6 mm(2), area stenosis was 20.1±16.3%, minimal luminal diameter was 3.0±0.6 mm, and diameter stenosis was 12.8±11.1%. CONCLUSIONS: BVS implantation in STEMI is feasible and safe and offers excellent 1-year clinical and angiographic outcomes.

• Klíčová slova
• bioresorbable scaffold, computed tomography, myocardial infarction, restenosis, stent, stent thrombosis,
• MeSH
• infarkt myokardu diagnostické zobrazování   terapie   MeSH
• koronární angiografie * MeSH
• koronární angioplastika * MeSH
• lidé středního věku MeSH
• lidé MeSH
• počítačová rentgenová tomografie * MeSH
• prospektivní studie MeSH
• senioři MeSH
• tkáňové podpůrné struktury * MeSH
• vstřebatelné implantáty * MeSH
• Check Tag
• lidé středního věku MeSH
• lidé MeSH
• mužské pohlaví MeSH
• senioři MeSH
• ženské pohlaví MeSH
• Publikační typ
• časopisecké články MeSH
• práce podpořená grantem MeSH