Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 81
Filtrar
1.
Hypertension ; : HYPERTENSIONAHA12117765, 2021 Nov 15.
Artigo em Inglês | MEDLINE | ID: mdl-34775789

RESUMO

Central (aortic) systolic blood pressure (cSBP) is the pressure seen by the heart, the brain, and the kidneys. If properly measured, cSBP is closer associated with hypertension-mediated organ damage and prognosis, as compared with brachial SBP (bSBP). We investigated 24-hour profiles of bSBP and cSBP, measured simultaneously using Mobilograph devices, in 2423 untreated adults (1275 women; age, 18-94 years), free from overt cardiovascular disease, aiming to develop reference values and to analyze daytime-nighttime variability. Central SBP was assessed, using brachial waveforms, calibrated with mean arterial pressure (MAP)/diastolic BP (cSBPMAP/DBPcal), or bSBP/diastolic blood pressure (cSBPSBP/DBPcal), and a validated transfer function, resulting in 144 509 valid brachial and 130 804 valid central measurements. Averaged 24-hour, daytime, and nighttime brachial BP across all individuals was 124/79, 126/81, and 116/72 mm Hg, respectively. Averaged 24-hour, daytime, and nighttime values for cSBPMAP/DBPcal were 128, 128, and 125 mm Hg and 115, 117, and 107 mm Hg for cSBPSBP/DBPcal, respectively. We pragmatically propose as upper normal limit for 24-hour cSBPMAP/DBPcal 135 mm Hg and for 24-hour cSBPSBP/DBPcal 120 mm Hg. bSBP dipping (nighttime-daytime/daytime SBP) was -10.6 % in young participants and decreased with increasing age. Central SBPSBP/DBPcal dipping was less pronounced (-8.7% in young participants). In contrast, cSBPMAP/DBPcal dipping was completely absent in the youngest age group and less pronounced in all other participants. These data may serve for comparison in various diseases and have potential implications for refining hypertension diagnosis and management. The different dipping behavior of bSBP versus cSBP requires further investigation.

3.
EClinicalMedicine ; 40: 101099, 2021 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-34490415

RESUMO

Background: Since the beginning of the coronavirus disease 2019 (COVID-19) pandemic, there has been increasing urgency to identify pathophysiological characteristics leading to severe clinical course in patients infected with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Human leukocyte antigen alleles (HLA) have been suggested as potential genetic host factors that affect individual immune response to SARS-CoV-2. We sought to evaluate this hypothesis by conducting a multicenter study using HLA sequencing. Methods: We analyzed the association between COVID-19 severity and HLAs in 435 individuals from Germany (n = 135), Spain (n = 133), Switzerland (n = 20) and the United States (n = 147), who had been enrolled from March 2020 to August 2020. This study included patients older than 18 years, diagnosed with COVID-19 and representing the full spectrum of the disease. Finally, we tested our results by meta-analysing data from prior genome-wide association studies (GWAS). Findings: We describe a potential association of HLA-C*04:01 with severe clinical course of COVID-19. Carriers of HLA-C*04:01 had twice the risk of intubation when infected with SARS-CoV-2 (risk ratio 1.5 [95% CI 1.1-2.1], odds ratio 3.5 [95% CI 1.9-6.6], adjusted p-value = 0.0074). These findings are based on data from four countries and corroborated by independent results from GWAS. Our findings are biologically plausible, as HLA-C*04:01 has fewer predicted bindings sites for relevant SARS-CoV-2 peptides compared to other HLA alleles. Interpretation: HLA-C*04:01 carrier state is associated with severe clinical course in SARS-CoV-2. Our findings suggest that HLA class I alleles have a relevant role in immune defense against SARS-CoV-2. Funding: Funded by Roche Sequencing Solutions, Inc.

4.
Catheter Cardiovasc Interv ; 98(4): 733-737, 2021 10.
Artigo em Inglês | MEDLINE | ID: mdl-34145952

RESUMO

Provoked exercise desaturation is a rare presentation of patent foramen ovale (PFO), when vigorous exercise leads to desaturation of arterial blood and subsequent dyspnea. We present a case of provoked exercise desaturation and curative percutaneous closure and review the literature. A 54-year-old male patient presented with shortness of breath during exercise in the pneumology outpatient department. During exercise spirometry, a relevant drop in arterial oxygen saturation and partial pressure of oxygen was observed and a right-left shunt suspected. In a transesophageal echocardiogram, a PFO was observed. Cardiac catheterization documented a right-left-shunt causing desaturation during exercise. Following percutaneous closure of the PFO, exercise induced desaturation was no longer detectable during exercise spirometry and there was considerable improvement in exercise capacity and subjective dyspnea. To sum up, provoked exercise desaturation is a rare but curable presentation of PFO. Percutaneous closure is a safe and effective way to treat this entity.


Assuntos
Forame Oval Patente , Cateterismo Cardíaco , Dispneia/diagnóstico , Dispneia/etiologia , Ecocardiografia Transesofagiana , Forame Oval Patente/complicações , Forame Oval Patente/diagnóstico por imagem , Forame Oval Patente/terapia , Humanos , Hipóxia/etiologia , Masculino , Pessoa de Meia-Idade , Resultado do Tratamento
5.
Wien Klin Wochenschr ; 133(15-16): 750-761, 2021 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-33755758

RESUMO

This position statement is an update to the 2011 consensus statement of the Austrian Society of Cardiology (ÖKG) and the Austrian Society of Cardiac Surgery (ÖGTHG) for transfemoral transcatheter aortic valve implantation.Due to a number of recently published studies, broadening of indications and recommendations of medical societies and our own national developments, the ÖKG and the ÖGHTG wish to combine the 2017 ESC/EACTS guidelines for the management of valvular heart disease with a national position paper and to focus on certain details for the application in Austria. Thus, this position statement serves as a supplement and further interpretation of the international guidelines.


Assuntos
Estenose da Valva Aórtica , Cardiologia , Doenças das Valvas Cardíacas , Implante de Prótese de Valva Cardíaca , Substituição da Valva Aórtica Transcateter , Estenose da Valva Aórtica/cirurgia , Áustria , Humanos
6.
Hypertension ; 77(2): 571-581, 2021 02.
Artigo em Inglês | MEDLINE | ID: mdl-33390046

RESUMO

Aortic pulse wave velocity (PWV) is directly related to arterial stiffness. Different methods for the determination of PWV coexist. The aim of this prospective study was to evaluate the prognostic value of PWV in high-risk patients with suspected coronary artery disease undergoing invasive angiography and to compare 3 different methods for assessing PWV. In 1040 patients, invasive PWV (iPWV) was measured during catheter pullback. Additionally, PWV was estimated with a model incorporating age, central systolic blood pressure, and pulse waveform characteristics obtained from noninvasive measurements (estimated PWV). As a third method, PWV was calculated with a formula solely based on age and blood pressure (formula-based PWV). Survival analysis was based on continuous PWV as well as using cutoff values. After a median follow-up duration of 1565 days, 24% of the patients reached the combined end point (cardiovascular events or mortality). Cox proportional hazard ratios per 1 SD were 1.35 for iPWV, 1.37 for estimated PWV, and 1.28 for formula-based PWV (P<0.0001 for all 3 methods) in univariate analysis, remaining statistically significant after comprehensive multivariable adjustments. In a model including a modified risk score for coronary artery disease, iPWV and estimated PWV remained borderline significant. The net reclassification improvement was significant for iPWV (0.173), formula-based PWV (0.181), and estimated PWV (0.230). All 3 methods for the determination of PWV predicted cardiovascular events and mortality in patients with suspected coronary artery disease. This indicates that iPWV as well as both noninvasive estimation methods are suitable for the assessment of arterial stiffness, bearing in mind their individual characteristics.


Assuntos
Aorta/fisiopatologia , Velocidade do Fluxo Sanguíneo/fisiologia , Pressão Sanguínea/fisiologia , Doenças Cardiovasculares/fisiopatologia , Angiografia Coronária , Idoso , Aorta/diagnóstico por imagem , Doenças Cardiovasculares/diagnóstico por imagem , Doenças Cardiovasculares/mortalidade , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Prognóstico , Estudos Prospectivos , Análise de Onda de Pulso , Taxa de Sobrevida , Rigidez Vascular/fisiologia
7.
J Clin Med ; 9(10)2020 Oct 13.
Artigo em Inglês | MEDLINE | ID: mdl-33066034

RESUMO

BACKGROUND: Complete real-world data on the indications and outcomes of left atrial appendage closure (LAAC) outside of clinical trials are rare. In this study, we stratified patients undergoing LAAC by indication groups. METHODS: This analysis of the national multicentre Austrian LAAC Registry comprised all patients that underwent LAAC up until 2018 at the currently active centres in Austria. The baseline characteristics, procedural details and outcomes between the following indication groups were compared: bleeding as an indication for LAAC ("bleeding" group) vs. thromboembolism despite oral anticoagulation (OAC; "thromboembolism" group) vs. an intolerance to OAC for reasons other than the above ("other" group). RESULTS: The analysis included 186 patients, with 59.7% in the "bleeding" group, 8.1% in the "thromboembolism" group and 32.2% in the "other" group. The CHADS2 score was the highest in the "thromboembolism" group and the HAS-BLED score was the highest in the "bleeding" group. The procedural outcomes were similar between groups (implantation success, 97.3%), with major complications occurring in 7.0% of patients. One-year survival free from stroke, bleeding or LAAC-associated hospitalisation was 83.9%, 90.0% and 81.4% in the "bleeding", "thromboembolism" and "other" groups, respectively (p = 0.891). CONCLUSIONS: In routine clinical practice, LAAC was used in a heterogeneous patient population with atrial fibrillation (AF) and contraindication, inefficacy or intolerance to OAC. The long-term outcome was favourable in all groups.

8.
J Clin Med ; 9(7)2020 Jul 10.
Artigo em Inglês | MEDLINE | ID: mdl-32664309

RESUMO

Coronavirus disease 19 (COVID-19) and its associated restrictions could affect ischemic times in patients with ST-segment elevation myocardial infarction (STEMI). The objective of this study was to investigate the influence of the COVID-19 outbreak on ischemic times in consecutive all-comer STEMI patients. We included consecutive STEMI patients (n = 163, median age: 61 years, 27% women) who were referred to seven tertiary care hospitals across Austria for primary percutaneous coronary intervention between 24 February 2020 (calendar week 9) and 5 April 2020 (calendar week 14). The number of patients, total ischemic times and door-to-balloon times in temporal relation to COVID-19-related restrictions and infection rates were analyzed. While rates of STEMI admissions decreased (calendar week 9/10 (n = 69, 42%); calendar week 11/12 (n = 51, 31%); calendar week 13/14 (n = 43, 26%)), total ischemic times increased from 164 (interquartile range (IQR): 107-281) min (calendar week 9/10) to 237 (IQR: 141-560) min (calendar week 11/12) and to 275 (IQR: 170-590) min (calendar week 13/14) (p = 0.006). Door-to-balloon times were constant (p = 0.60). There was a significant difference in post-interventional Thrombolysis in myocardial infarction (TIMI) flow grade 3 in patients treated during calendar week 9/10 (97%), 11/12 (84%) and 13/14 (81%; p = 0.02). Rates of in-hospital death and re-infarction were similar between groups (p = 0.48). Results were comparable when dichotomizing data on 10 March and 16 March 2020, when official restrictions were executed. In this cohort of all-comer STEMI patients, we observed a 1.7-fold increase in ischemic time during the outbreak of COVID-19 in Austria. Patient-related factors likely explain most of this increase. Counteractive steps are needed to prevent further cardiac collateral damage during the ongoing COVID-19 pandemic.

11.
J Hum Hypertens ; 34(4): 326-334, 2020 04.
Artigo em Inglês | MEDLINE | ID: mdl-31358883

RESUMO

Cardiovascular mortality is the leading cause of death in Austria, with uncontrolled blood pressure (BP) as a major risk factor. Increased arterial stiffness can indicate high cardiovascular risk. In a screening project, we acquired brachial waveforms with automated oscillometric devices in 45 public pharmacies and at 2 public health events in Upper Austria. Brachial BP was measured, and aortic pulse wave velocity (aoPWV) was estimated, using age, systolic BP, and waveform characteristics, with the validated ARCSolver algorithm. Using age-specific percentiles from a previous population study, we defined healthy (HVA) and early (EVA) vascular aging. In a subgroup, 24-h ambulatory BP monitoring was performed to verify hypertension status. Overall, 10,973 individuals (age 20-94 years) participated. Mean BP was 133/83 mm Hg. In all, 38.1% of participants had elevated BPs (≥140/90 mm Hg), 57.3% out of 3980 participants with known hypertension, and 29.5% out of 6066 participants without known hypertension. In all, 1.0% of participants had aoPWV below 10th reference percentile (HVA), with a negligible proportion above 60 years. In total, 37.3% were above the 90th reference percentile (EVA), with proportions rising from one-quarter in youngest partcipants to one-half in oldest participants. In participants with EVA, BP in the pharmacy was elevated in 79.5%. We were able to motivate a high number of customers at pharmacies to participate in a screening program by combining the measurements of BP and vascular aging. However, awareness and control of arterial hypertension in Austria remains suboptimal, and the high prevalence of EVA is alarming.


Assuntos
Hipertensão , Farmácias , Rigidez Vascular , Adulto , Idoso , Idoso de 80 Anos ou mais , Envelhecimento , Áustria/epidemiologia , Pressão Sanguínea , Humanos , Hipertensão/diagnóstico , Hipertensão/epidemiologia , Pessoa de Meia-Idade , Prevalência , Análise de Onda de Pulso , Adulto Jovem
13.
Int J Cardiovasc Imaging ; 35(9): 1557-1561, 2019 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-31044328

RESUMO

Right ventricular systolic dysfunction is prognostic in various cardiovascular diseases. Right ventricular systolic function is not commonly assessed in the catheterization laboratory. Therefore, we developed a novel, reproducible method to measure right ventricular systolic function during selective coronary angiography. We analyzed the angiographic systolic translational motion and maximum speed of the right coronary artery (RCA) in 97 consecutive patients and compared it to the tricuspid annular plane systolic excursion (TAPSE) as measured by echocardiography. All measurements were performed by two independent operators on two occasions. Inter-observer variability and intra-observer variability were excellent for RCA motion distance and for RCA maximum speed. There was a significant correlation of the RCA motion distance and RCA maximum speed with the TAPSE measured by echocardiography (Pearson's correlation for RCA distance: r = 0.59, p < 0.001, r2 = 0.35; for RCA speed: r = 0.40, p < 0.001, r2 = 0.16). The area under the receiver operating curve for the RCA motion distance was 0.88 (95% CI 0.80-0.96) for discrimination of normal and abnormal right ventricular systolic function. A cut-off value less than 22.3 mm systolic RCA motion had a specificity of 93.3% and a sensitivity of 75.6% for identifying an abnormal right ventricular systolic function. Analysis of the RCA motion is a reproducible and reliable method to measure right ventricular systolic function during selective coronary angiography. It is a simple and useful tool to assess right ventricular function in the catheterization laboratory and may serve for risk assessment for right ventricular failure. CLINICAL TRIAL REGISTRATION: Data for this study was collected retrospectively from Swiss Transcatheter Aortic Valve Implantation Registry (NCT01368250). https://clinicaltrials.gov/show/NCT01368250 .


Assuntos
Angiografia Coronária/métodos , Vasos Coronários/diagnóstico por imagem , Movimentos dos Órgãos , Interpretação de Imagem Radiográfica Assistida por Computador/métodos , Disfunção Ventricular Direita/diagnóstico por imagem , Função Ventricular Direita , Idoso , Idoso de 80 Anos ou mais , Vasos Coronários/fisiopatologia , Feminino , Humanos , Masculino , Variações Dependentes do Observador , Valor Preditivo dos Testes , Sistema de Registros , Reprodutibilidade dos Testes , Estudos Retrospectivos , Sístole , Valva Tricúspide/diagnóstico por imagem , Valva Tricúspide/fisiopatologia , Disfunção Ventricular Direita/fisiopatologia
16.
Clin Res Cardiol ; 108(7): 749-762, 2019 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-30535801

RESUMO

OBJECTIVE: Classifying myocardial infarction into type 1 (T1MI) or type 2 (T2MI) remains a challenge in clinical practice. We aimed to identify factors contributing to variation in the classifications of MI into type 1 or type 2. In addition, pooled analyses of long-term mortality and reinfarction outcomes were performed. METHODS: We searched Medline, Embase and Web of Science through January 2018 for observational studies or clinical trials classifying patients as either T1MI or T2MI. Studies with baseline characteristics allowing a comparison between both groups were included. Inverse variance random-effects models were used to pool risk ratios (RR). RESULTS: Overall, 93,194 patients from 20 included observational studies were classified as T1MI and 9291 as T2MI; corresponding to 87.9% and 8.8% of all patients diagnosed with MI. Inclusion of ST-elevation MI patients was inconsistent among studies. Coronary angiography was performed in 77.7% and 31.5% of all patients with T1MI and T2MI, respectively. From a subgroup of 11 studies, percutaneous coronary intervention was performed in 79.2% of all patients classified as T1MI (range 44.2-93.0%) and 40.2% of all T2MI patients (range 0-87.5%). A meta-analysis of 6 studies (44,366 in total) on 2-year mortality showed worse outcome among T2MI patients (RR: 1.52, CI 1.07-2.17, P = 0.02; I2 = 92%). Risk of reinfarction at 1.6 years was higher among T2MI patients (RR: 1.68, CI 1.22-2.31, P = 0.001; I2 = 9%). CONCLUSIONS: Classification of T1MI and T2MI varies widely among studies. A standardized approach with clear definitions is needed to avoid misclassification and ensure appropriate patient management.


Assuntos
Angiografia Coronária/métodos , Infarto do Miocárdio/classificação , Saúde Global , Humanos , Infarto do Miocárdio/diagnóstico , Infarto do Miocárdio/mortalidade , Taxa de Sobrevida/tendências
17.
J Geriatr Cardiol ; 15(6): 394-400, 2018 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-30108610

RESUMO

Backgound: The influence of gender on clinical outcomes following transcatheter aortic valve implantation (TAVI) was considerably discrepant in previous studies. We aimed to investigate the impact of gender in our registry. Methods: The study is a retrospective observational analysis of a prospectively designed cohort (546 consecutive patients treated at the University Hospital Zurich who were enrolled in Swiss TAVI Cohort from May 2008 to April 2014). The Study took place in University Heart Centre at University Hospital Zurich, Switzerland. Results: Both genders were equally represented with 51.5 % (n = 281) of the populations being females, who were significantly older and had a more pronounced history of hypertension (P < 0.001). Males on the other hand showed a higher incidence of diabetes (P = 0.004), coronary artery disease (P < 0.001), chronic obstructive pulmonary disease (P < 0.001) and renal failure requiring renal replacement therapy (P = 0.018). Patients were followed up for a median of 391 days with a 100% complete follow-up at one year. The primary outcome (all-cause mortality) occurred in 6.8% (n = 37) and 15% (n = 82) of patients at 30 days and one year, respectively. The 30-day all-cause mortality outcome did not significantly differ between females (7.5%) and males (6.0%) (P = 0.619), but one year all-cause mortality occurred significantly more in males than in females (18.7% vs. 11.7%, P < 0.037). Conclusion: After TAVI implantation for severe aortic stenosis, males have a less favorable long-term (one year) mortality outcome than females.

19.
Am J Hypertens ; 31(5): 574-581, 2018 04 13.
Artigo em Inglês | MEDLINE | ID: mdl-29324983

RESUMO

BACKGROUND: Pulsatile hemodynamics are associated with left ventricular filling pressures and diastolic dysfunction. We investigated their relationship with maximum workload and peak oxygen uptake (peak VO2) in patients with exertional dyspnea and preserved left ventricular ejection fraction (LVEF). METHODS: Radial waveforms from tonometry were processed with a transfer function, pulse wave analysis and wave separation analysis, yielding central aortic pressures and measures of forward (amplitude of forward wave-Pf) and reflected waves (augmentation index-AIx, augmentation pressure-AP, amplitude of backward wave-Pb) and their ratio (reflection magnitude). Aortic pulse wave velocity (aoPWV) was estimated with a validated formula from single-point waveforms. Ergospirometry for assessment of exercise capacity was performed on a bicycle ergometer, using a ramp protocol. RESULTS: Sixty-six patients were included (43 females; mean age 66 years; 83% hypertensives; mean body mass index 28.3 kg/m2). Mean peak VO2 was 17.0 ml/min/kg, mean achieved maximum workload 104.5 watts (80.9% of a reference population). Maximum workload and peak VO2 showed significant inverse relationships with AIx, AP, Pb, and aoPWV (r = -0.26 to -0.57). In multiple adjusted regression models, brachial and aortic pulse pressure, AP, Pf, Pb, and aoPWV were significant independent predictors of maximum workload, whereas AP, AIx75, Pf, Pb, and aoPWV were independently related to peak VO2. CONCLUSIONS: Pulsatile hemodynamics are independently associated with objective measures of exercise capacity in patients with normal LVEF.


Assuntos
Dispneia/fisiopatologia , Tolerância ao Exercício , Hemodinâmica , Volume Sistólico/fisiologia , Função Ventricular Esquerda/fisiologia , Idoso , Feminino , Humanos , Masculino , Pessoa de Meia-Idade
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA
...