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1.
Acad Med ; 2024 May 09.
Artigo em Inglês | MEDLINE | ID: mdl-38722251

RESUMO

PURPOSE: Educators lack tools to measure the workplace characteristics that learners perceive to affect learning. Without a tool that encompasses the social, organizational, and physical components of workplace learning environments (WLEs), it is challenging to identify and improve problematic workplace characteristics. Using echocardiography WLE, this study developed a tool to measure workplace characteristics that cardiology fellows perceive to affect learning. METHOD: The Workplace-Cognitive Load Tool (W-CLT) was developed, which encompasses 17 items to measure workplace characteristics that could affect perceived cognitive load and learning. Exploratory factor analysis was used to identify the most parsimonious structure. A total of 646 cardiology subspeciality fellows were recruited from 60 cardiology fellowship programs to complete the survey between November 2020 and February 2021. Validity evidence was collected, guided by the unified model of validity. RESULTS: A total of 308 fellows (response rate, 49%) participated in the survey. The most parsimonious structure included 4 factors: (1) workplace-task, (2) workplace-environment, (3) workplace-orientation, and (4) workplace-teaching and feedback. All factors had high reliability (Cronbach α = 0.92, 0.92, 0.96, and 0.94, respectively). Social, organizational, and physical components of WLEs were represented in the items. Workplace-teaching and feedback had moderate negative correlations with workplace-environment (r = -0.41, P < .001) and workplace-orientation (r = -0.36, P < .001). A moderate positive correlation was found between workplace-task and workplace-teaching and feedback (r = 0.42, P < .001). Workplace-task had weak negative correlations with workplace-environment (r = -0.22, P < .001) and workplace-orientation (r = -0.23, P < .001). CONCLUSIONS: The W-CLT measures workplace characteristics that cardiology fellows perceive to affect their learning. The presence of social, organizational, and physical components emphasizes how workplace characteristics can enhance or impede learning. The W-CLT provides a foundation to explore how learning can be optimized in other WLEs.

2.
Echocardiography ; 41(1): e15751, 2024 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-38284677

RESUMO

BACKGROUND: The effect of trastuzumab therapy on left atrial (LA) function remains largely unknown. Our aim was to assess the changes in LA strain parameters longitudinally in patients treated with trastuzumab. METHODS: We retrospectively studied 170 patients with stage I-IV HER2+ breast cancer. All patients had baseline echocardiograms and repeat echocardiograms at 3 months and after 1 year. We measured LA strain at all three time points. Changes in LA strain and strain rate (sr) parameters were evaluated using repeated-measures mixed-effects models. The cohort was stratified according to development of cancer therapeutics-related cardiac dysfunction (CTRCD) during follow-up. RESULTS: The mean age was 52.7 ± 13.8 years, 25.3% had hypertension and 16.0% had metastatic disease. Multiple LA strain parameters (predicted delta value, [95%CI]) showed statistically significant declines in patients who developed CTRCD from baseline to the 3-month follow-up after multivariable adjustment; LA reservoir strain (LAεres ): -4.7%; [-8.1% to -1.3%], p = .007; LA conduit strain (LAεcon ): -2.8%; [-5.3% to -.4%], p = .021); and LAεres sr: -.2/s; [-.3/s to -.09/s], p < .001). In patients who did not develop CTRCD, LA strain parameters declined significantly but to a smaller degree than in the CTRCD group (LAεres : -1.7%; [-3.1% to -.3%], p = .020, LAεcon : -2.2%; [-3.3% to -1.1%], p < .001, and LA booster pump strain : -2.4%; [-3.5% to -1.4%], p < .001). LA strain rates did not decline significantly in the non-CTRCD group. CONCLUSION: Trastuzumab treatment was associated with declines in LA strain parameters in patients with breast cancer. The largest declines were observed in patients who developed CTRCD during treatment.


Assuntos
Neoplasias da Mama , Cardiopatias , Humanos , Adulto , Pessoa de Meia-Idade , Idoso , Feminino , Trastuzumab/efeitos adversos , Neoplasias da Mama/tratamento farmacológico , Estudos Retrospectivos , Cardiopatias/complicações , Átrios do Coração/diagnóstico por imagem , Função Ventricular Esquerda
3.
Heart ; 109(22): 1722-1723, 2023 10 26.
Artigo em Inglês | MEDLINE | ID: mdl-37536759
4.
J Am Soc Echocardiogr ; 36(11): 1204-1212, 2023 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-37390909

RESUMO

BACKGROUND: The ratio of transmitral early filling velocity to early diastolic strain rate (E/e'sr) has recently emerged as a measure of left ventricular filling pressure. Reference values are needed for this new parameter for it to be used clinically. METHODS: Healthy participants from a prospective general population study, the Fifth Copenhagen City Heart Study, were assessed to establish reference values for E/e'sr derived from two-dimensional speckle-tracking echocardiography. The prevalence of abnormal E/e'sr was assessed in participants with cardiovascular risk factors or specific diseases. RESULTS: The population comprised 1,623 healthy participants (median age, 45; interquartile range, 32-56; 61% female). The upper reference limit for E/e'sr in the population was 79.6 cm. Following multivariable adjustment, male participants exhibited significantly higher E/e'sr than female participants (upper reference limit for male participants, 83.7 cm; for female participants, 76.5 cm). For both sexes, E/e'sr increased in a curvilinear fashion with age such that the largest increases in E/e'sr were observed in participants >45 years. In the entire CCHS5 population with E/e'sr available (n = 3,902), increasing age, body mass index, systolic blood pressure, male sex, estimated glomerular filtration rate, and diabetes were associated with E/e'sr (all P < .05). Total cholesterol was associated with a less steep increase in E/e'sr. Abnormal E/e'sr was seldomly observed in participants with normal diastolic function but became more frequent in participants with increasing grades of diastolic dysfunction (normal, mild, moderate, severe [abnormal E/e'sr for each grade: 4.4% vs 20.0% vs 16.2% vs 55.6%, respectively]). CONCLUSION: The E/e'sr differs between sexes and is age dependent such that E/e'sr increases with advancing age. Therefore, we established sex- and age-stratified reference values for E/e'sr.


Assuntos
Ecocardiografia , Função Ventricular Esquerda , Humanos , Masculino , Feminino , Pessoa de Meia-Idade , Valores de Referência , Estudos Prospectivos , Diástole , Função Ventricular Esquerda/fisiologia
8.
JACC Case Rep ; 4(4): 221-225, 2022 Feb 16.
Artigo em Inglês | MEDLINE | ID: mdl-35199020

RESUMO

Transcatheter edge-to-edge valve repair can improve clinical outcomes in otherwise high-risk surgical patients. This is a first-in-human procedure outlining transcatheter edge-to-edge valve repair of a systemic tricuspid valve in an extracardiac Fontan patient born with hypoplastic left heart syndrome with prohibitive surgical risk. (Level of Difficulty: Advanced.).

9.
J Am Coll Cardiol ; 78(17): 1717-1726, 2021 10 26.
Artigo em Inglês | MEDLINE | ID: mdl-34674817

RESUMO

OBJECTIVES: The third annual Cardiovascular Diseases (CV) Fellowship Program Directors (PDs) Survey sought to understand burnout and well-being among CV fellowship PDs. BACKGROUND: Physician burnout is a common phenomenon. Data on burnout among cardiologists, specifically CV PDs, remain limited. METHODS: The survey contained 8 questions examining satisfaction, stress, and burnout among CV fellowship PDs. Burnout was defined based on the self-reported presence of ≥1 symptom of burnout, constant feelings of burnout, or complete burnout. RESULTS: Survey response rate was 57%. Most respondents were men (78%) and 54% represented university-based programs. Eighty percent reported satisfaction with their current job as PD, and 96% identified interactions with fellows as a driver of their satisfaction. Forty-five percent reported feeling a great deal of stress from their job. Stress was higher among women PDs, early-career PDs, and PDs of larger and university-based programs. Twenty-one percent reported some symptoms of burnout, and only 36% reported enjoyment without stress or burnout. Rates of enjoyment without stress or burnout were higher among men and late-career PDs, PDs of smaller programs, and PDs of community-based programs. Seventeen percent of PDs reported a high likelihood of resigning in the next year, of which the most common reason was the tasks of PDs were becoming overwhelming. CONCLUSIONS: Most CV fellowship PDs are satisfied with their position, but stress and burnout remain common. Women PDs, early-career PDs, and PDs of larger, university-based programs demonstrate more adverse markers of well-being. Opportunities exist to support CV fellowship PDs in their critical role.


Assuntos
Esgotamento Profissional , Esgotamento Psicológico , Cardiologistas , Cardiologia/educação , Cardiologia/organização & administração , Diretores Médicos , Adulto , Idoso , Educação de Pós-Graduação em Medicina , Bolsas de Estudo , Feminino , Humanos , Satisfação no Emprego , Masculino , Pessoa de Meia-Idade , Inquéritos e Questionários
10.
Echocardiography ; 38(11): 1879-1886, 2021 11.
Artigo em Inglês | MEDLINE | ID: mdl-34713484

RESUMO

BACKGROUND: Diastolic dysfunction is an early marker of cardiac pathology in end-stage kidney disease (ESKD) patients. The ratio of transmitral filling velocity (E) to early diastolic strain rate (E/e'sr) is a novel non-invasive marker of early left ventricular (LV) filling pressure obtained using two-dimensional speckle tracking echocardiography (2DSTE). METHODS: In a prospective cohort of kidney transplant (KTX) recipients with echocardiograms performed pre-transplant we obtained repeat echocardiograms at 6 months following transplant. All echocardiograms were analyzed using 2DSTE where E/e'sr and global longitudinal strain were obtained. Paired tests were used to assess changes to cardiac structure and function following KTX. RESULTS: A total of 33 patients were included in the study (mean age was 46.6 ± 13.7 years and 42% were males). The primary causes of ESKD in the cohort were glomerular disease (33%), hypertension (30%), and polycystic kidney disease (12%). The median (IQR) time spent on dialysis was 5.4 years [2.9, 7.7 years]. A reverse remodeling of the LV was observed following KTX as LV mass decreased (189.2 ± 57.5 g vs 171.1 ± 56.8 g, P = 0.014). LV filling pressure decreased as assessed by E/e'sr (103.7 ± 51.1 cm vs 72.6 ± 35.5 cm, P = 0.009). E to early diastolic mitral annular tissue velocity (E/e') did not change following KTX (9.9 ± 4.5 vs 10.3 ± 4.1, P = 0.54). Additionally, both LV internal diastolic and systolic diameter decreased significantly. CONCLUSION: Reverse cardiac remodeling following KTX was observed as improvements in LV mass and LV dimensions. LV filling pressure improved as assessed by E/e'sr decreased following KTX, whereas E/e' did not change.


Assuntos
Falência Renal Crônica , Transplante de Rim , Disfunção Ventricular Esquerda , Adulto , Diástole , Humanos , Falência Renal Crônica/complicações , Falência Renal Crônica/cirurgia , Masculino , Pessoa de Meia-Idade , Estudos Prospectivos , Volume Sistólico , Disfunção Ventricular Esquerda/diagnóstico por imagem , Função Ventricular Esquerda , Remodelação Ventricular
11.
J Grad Med Educ ; 13(3): 335-344, 2021 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-34178258

RESUMO

BACKGROUND: While program director (PD) letters of recommendation (LOR) are subject to bias, especially against those underrepresented in medicine, these letters are one of the most important factors in fellowship selection. Bias manifests in LOR in a number of ways, including biased use of agentic and communal terms, doubt raising language, and description of career trajectory. To reduce bias, specialty organizations have recommended standardized PD LOR. OBJECTIVE: This study examined PD LOR for applicants to a cardiology fellowship program to determine the mechanism of how bias is expressed and whether the 2017 Alliance for Academic Internal Medicine (AAIM) guidelines reduce bias. METHODS: Fifty-six LOR from applicants selected to interview at a cardiology fellowship during the 2019 and 2020 application cycles were selected using convenience sampling. LOR for underrepresented (Black, Latinx, women) and non-underrepresented applicants were analyzed using directed qualitative content analysis. Two coders used an iteratively refined codebook to code the transcripts. Data were analyzed using outputs from these codes, analytical memos were maintained, and themes summarized. RESULTS: With AAIM guidelines, there appeared to be reduced use of communal language for underrepresented applicants, which may represent less bias. However, in both LOR adherent and not adherent to the guidelines, underrepresented applicants were still more likely to be described using communal language, doubt raising language, and career trajectory bias. CONCLUSIONS: PDs used language in a biased way to describe underrepresented applicants in LOR. The AAIM guidelines reduced but did not eliminate this bias. We provide recommendations to PDs and the AAIM on how to continue to work to reduce this bias.


Assuntos
Internato e Residência , Sexismo , Bolsas de Estudo , Feminino , Humanos , Medicina Interna , Masculino , Seleção de Pessoal
12.
Med Educ Online ; 26(1): 1946237, 2021 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-34187346

RESUMO

Due to the COVID-19 pandemic, most graduate medical education (GME) training programs conducted virtual interviews for prospective trainees during the 2020-2021 application cycle. Many internal medicine (IM) subspecialty fellowship programs hosted virtual interviews for the first time with little published data to guide best practices.To evaluate how IM subspecialty fellowship applicants perceived the virtual interview day experience.We designed a 38-item questionnaire that was sent via email to applicants in eight IM subspecialty programs at a single tertiary academic medical center (University of California, San Francisco) from September-November, 2020.Seventy-five applicants completed the survey (75/244, 30.7%), including applicants from all eight fellowship programs. Most survey respondents agreed that the length of the virtual interview day (mean = 6.4 hours) was long enough to gather the information they needed (n = 65, 86.7%) and short enough to prevent fatigue (n = 55, 73.3%). Almost all survey respondents agreed that they could adequately assess the clinical experience (n = 71, 97.3%), research opportunities (n = 72, 98.6%), and program culture (n = 68, 93.2%). Of the respondents who attended a virtual educational conference, most agreed it helped to provide a sense of the program's educational culture (n = 20, 66.7%). Areas for improvement were identified, with some survey respondents reporting that the virtual interview day was too long (n = 11) or that they would have preferred to meet more fellows (n = 10).Survey respondents indicated that the virtual interview was an adequate format to learn about fellowship programs. These findings can inform future virtual interviews for GME training programs.


Assuntos
COVID-19/epidemiologia , Bolsas de Estudo , Medicina Interna/educação , Entrevistas como Assunto/métodos , Estudantes de Medicina/psicologia , Feminino , Humanos , Internato e Residência/organização & administração , Masculino , Pandemias , Estudos Prospectivos , SARS-CoV-2 , São Francisco , Critérios de Admissão Escolar
13.
J Echocardiogr ; 19(4): 222-231, 2021 12.
Artigo em Inglês | MEDLINE | ID: mdl-34050902

RESUMO

BACKGROUND: Trainees learn transthoracic echocardiogram (TTE) interpretation through independently completing and reviewing selected portions of the study with experts. The diagnostic accuracy of novice TTE interpretation is known to be low and schema for reading TTEs systematically are lacking. The purpose of our study is to identify techniques experts use while reading TTEs which could be used to more effectively teach novice readers. METHODS: We performed a prospective qualitative case study to observe how experts and trainees interpret TTEs in an academic institution using a concurrent think aloud (CTA) method. Three TTEs of intermediate complexity were given to 3 advanced imaging fellows, 3 first year fellows and 3 expert TTE readers Participants filled out a report while reading and described aloud their thought processes. Sessions were video and audiotaped for analysis. RESULTS: Experts and advanced fellows used specific techniques that novices did not including: previewing studies, reviewing multiple images simultaneously, having flexibility in image review order and disease coding, and saving hardest elements to code for the end. Direct observation of TTE reading informed trainee inefficiencies and was a well-received educational tool. CONCLUSIONS: In this single centered study we identified several unique approaches experts use to interpret TTEs which may be teachable to novices. Although limited in generalizability the findings of this study suggests that a more systematic approach to TTE interpretation, using techniques found in experts, might be of significant value for trainees. Further study is needed to evaluate teaching practices at other institutions and to assess whether implementation of these techniques by novices improves can improve their diagnostic accuracy and efficiency of reading at an earlier stage in their training.


Assuntos
Ecocardiografia , Humanos , Estudos Prospectivos
14.
Coron Artery Dis ; 32(4): 317-328, 2021 Jun 01.
Artigo em Inglês | MEDLINE | ID: mdl-33417339

RESUMO

BACKGROUND: Coronary artery calcium (CAC) is an indicator of atherosclerosis, and the CAC score is a useful noninvasive assessment of coronary artery disease. OBJECTIVE: To compare the risk of cardiovascular outcomes in patients with CAC > 0 versus CAC = 0 in asymptomatic and symptomatic population in patients without an established diagnosis of coronary artery disease. METHODS: A systematic search of electronic databases was conducted until January 2018 for any cohort study reporting cardiovascular events in patients with CAC > 0 compared with absence of CAC. RESULTS: Forty-five studies were included with 192 080 asymptomatic 32 477 symptomatic patients. At mean follow-up of 11 years, CAC > 0 was associated with an increased risk of major adverse cardiovascular and cerebrovascular events (MACE) compared to a CAC = 0 in asymptomatic arm [pooled risk ratio (RR) 4.05, 95% confidence interval (CI) 2.91-5.63, P < 0.00001, I2 = 80%] and symptomatic arm (pooled RR 6.06, 95% CI 4.23-8.68, P < 0.00001, I2 = 69%). CAC > 0 was also associated with increased risk of all-cause mortality in symptomatic population (pooled RR 7.94, 95% CI 2.61-24.17, P < 0.00001, I2 = 85%) and in asymptomatic population CAC > 0 was associated with higher all-cause mortality (pooled RR 3.23, 95% CI 2.12-4.93, P < 0.00001, I2 = 94%). In symptomatic population, revascularization in CAC > 0 was higher (pooled RR 15, 95% CI 6.66-33.80, P < 0.00001, I2 = 72) compared with CAC = 0. Additionally, CAC > 0 was associated with more revascularization in asymptomatic population (pooled RR 5.34, 95% CI 2.06-13.85, P = 0.0006, I2 = 93). In subgroup analysis of asymptomatic population by gender, CAC > 0 was associated with higher MACE (RR 6.39, 95% CI 3.39-12.84, P < 0.00001). CONCLUSION: Absence of CAC is associated with low risk of cardiovascular events compared with any CAC > 0 in both asymptomatic and symptomatic population without coronary artery disease.


Assuntos
Vasos Coronários/diagnóstico por imagem , Medição de Risco , Calcificação Vascular/diagnóstico por imagem , Doenças Cardiovasculares/epidemiologia , Angiografia Coronária , Humanos , Infarto do Miocárdio/epidemiologia , Revascularização Miocárdica
15.
Acad Med ; 96(3): 441-448, 2021 03 01.
Artigo em Inglês | MEDLINE | ID: mdl-33031115

RESUMO

PURPOSE: Although workplace learning environments provide authentic tasks to promote learning, elements of clinical settings may distract trainees and impede learning. The characteristics of workplace learning environments that require optimization are ill-defined. Applying principles of cognitive load theory (CLT) to optimize learning environments by managing intrinsic load (complexity of the task matched to learner knowledge and skill), minimizing extraneous load (any aspect that is not part of task completion), and increasing germane load (processing for storage in long-term memory) could be advantageous. The authors explored trainee perceptions of characteristics that helped or impaired learning from a cognitive load perspective. Echocardiography interpretation was used as a model. METHOD: The authors conducted semistructured interviews between December 2018 and March 2019 with a purposeful sample of 10 cardiology trainees at the University of California, San Francisco, School of Medicine until thematic sufficiency was achieved. Participants represented a range of training levels (3 fourth-year trainees, 2 fifth-year trainees, 3 sixth-year trainees, and 2 advanced echocardiography fellows) and career aspirations (4 desired careers in imaging). Two independent coders analyzed interview transcripts using template analysis. Codes were mapped to CLT subcomponents. RESULTS: Trainees selected their own echocardiograms to interpret; if trainees' skill levels and the complexity of the selected echocardiograms were mismatched, excess intrinsic load could result. Needing to look up information essential for task completion, interruptions, reporting software, and time pressures were characteristics that contributed to extraneous load. Characteristics that related to increasing germane load included the shared physical space (facilitating reading echocardiograms with attendings and just-in-time guidance from near peers) and the availability of final reports to obtain feedback independent of teachers. CONCLUSIONS: As interpreted from a cognitive load perspective, findings highlight characteristics of workplace learning environments that could be optimized to improve learning. The findings have direct application to redesigning these learning environments.


Assuntos
Cognição/fisiologia , Ecocardiografia/estatística & dados numéricos , Local de Trabalho/psicologia , Cardiologia/educação , Escolha da Profissão , Competência Clínica/estatística & dados numéricos , Educação Médica/métodos , Retroalimentação , Bolsas de Estudo , Feminino , Humanos , Entrevistas como Assunto , Aprendizagem/fisiologia , Masculino , Preceptoria/métodos , São Francisco/epidemiologia
16.
J Am Coll Cardiol ; 76(10): 1215-1222, 2020 09 08.
Artigo em Inglês | MEDLINE | ID: mdl-32883415

RESUMO

BACKGROUND: Women and minorities are under-represented in cardiovascular disease (CVD) specialties. It remains unknown how characteristics of the CVD learning environment affect diversity and how program directors (PDs) approach these critical issues. OBJECTIVES: The second annual Cardiovascular PD Survey aimed to investigate characteristics of the CVD learning environment that may affect diversity and strategies PDs use to approach these issues. METHODS: The survey contained 20 questions examining U.S.-based CVD PD perceptions of diversity in CVD and related characteristics of the CVD fellowship learning environment. RESULTS: In total, 58% of PDs completed the survey. Responding programs demonstrated geographic diversity. The majority were university-based or -affiliated. A total of 86% of PDs felt diversity in CVD as a field needs to increase, and 70% agreed that training programs could play a significant role in this. In total, 89% of PDs have attempted to increase diversity in fellowship recruitment. The specific strategies used were associated with PD sex and the presence of under-represented minority trainees in the program. PDs identified lack of qualified candidates and overall culture of cardiology as the 2 most significant barriers to augmenting diversity. A majority of programs have support systems in place for minority fellows or specific gender groups, including procedures to report issues of harassment or an unsafe learning environment. PDs identified shared best practices for recruitment and implicit bias training, among others, as important resources in their efforts to support diversity in CVD training. CONCLUSIONS: Diversity is important to CVD PDs. They are striving to increase it in their programs through recruitment and strategies directed toward the fellowship learning environment. The CVD community has opportunities to standardize strategies and provide national resources to support PDs in these critical efforts.


Assuntos
Cardiologia/educação , Doenças Cardiovasculares/terapia , Grupos Minoritários/educação , Diretores Médicos , Sexismo , Inquéritos e Questionários , Cardiologia/tendências , Feminino , Humanos , Masculino , Diretores Médicos/tendências , Sexismo/tendências
18.
J Echocardiogr ; 18(2): 94-104, 2020 06.
Artigo em Inglês | MEDLINE | ID: mdl-32189214

RESUMO

BACKGROUND: The ratio of transmitral early filling velocity to early diastolic strain rate (E/e'sr) has recently emerged as a novel and accurate non-invasive measure of left ventricular (LV) filling pressure. This systematic review and meta-analysis aimed to give an overview of the possible clinical implications of E/e'sr. METHODS: We conducted a systematic review and meta-analysis of all studies involving E/e'sr. Of 598 identified studies, 16 met our inclusion criteria. Studies involving E/e'sr either investigated its prognostic value (n = 9) or its correlation with invasively measured LV filling pressure (n = 7). RESULTS: The pooled meta-analysis showed a significant correlation between E/e'sr and pulmonary capillary wedge pressure (PCWP) measured invasively across the studies assessing this relationship (Cohen's d = 3.90 95% CI [2.38-6.39], p < 0.001) and between E/e'sr and left ventricle end-diastolic pressure (LVEDP) measured invasively across the studies assessing this relationship (Cohen's d = 5.30 95% CI [2.83-9.96], p < 0.001). The pooled analysis of the prognostic studies showed that E/e'sr was a significant predictor of adverse outcomes after multivariable adjustment across the different study populations in a random effects model (overall estimated HR: 1.58 95% CI [1.28-1.96], p < 0.001, per 1 m increase). CONCLUSION: E/e'sr correlates well with invasive measures of LV filling pressure. In addition, E/e'sr provides significant prognostic information across various patient populations. Further studies are needed to test if E/e'sr has an advantage to E/e'.


Assuntos
Velocidade do Fluxo Sanguíneo/fisiologia , Valva Mitral/fisiopatologia , Volume Sistólico/fisiologia , Disfunção Ventricular Esquerda/fisiopatologia , Função Ventricular Esquerda/fisiologia , Velocidade do Fluxo Sanguíneo/efeitos da radiação , Diástole , Humanos
19.
BMC Nephrol ; 20(1): 324, 2019 08 16.
Artigo em Inglês | MEDLINE | ID: mdl-31419965

RESUMO

BACKGROUND: Patients with autosomal dominant polycystic kidney disease (ADPKD) have an increased risk of cardiovascular morbidity and mortality. Impaired left ventricular (LV) global longitudinal strain (GLS) can be a sign of subclinical cardiac dysfunction even in patients with otherwise preserved ejection fraction (EF). Transmitral early filling velocity to early diastolic strain rate (E/SRe) is a novel measure of LV filling pressure, which is often affected early in cardiac disease. METHODS: A total of 110 ADPKD patients not on dialysis were included in this prospective study. All patients underwent an extensive echocardiographic examination including two-dimensional speckle tracking. GLS and strain rates were measured. The distribution of GLS and E/SRe was determined and patient characteristics were compared by median levels of GLS (- 17.8%) and E/SRe (91.4 cm). Twenty healthy participants were included as control group. RESULTS: There was a significantly worse GLS in the ADPKD patients (mean: - 17.8 ± 2.5%) compared to the healthy controls (mean: - 21.9 ± 1.9%), p < 0.001. The same was true for E/SRe (mean: 10.0 ± 0.3 cm) compared to the control group (mean: 6.5 ± 0.3 cm), p < 0.001. In simple logistic regression, male gender (OR: 4.74 [2.10-10.71], p < 0.001), fasting glucose (odds ratio (OR) 1.05 [1.01-1.10], p = 0.024), htTKV (OR: 1.07 [1.01-1.13], p = 0.013), HDL cholesterol (OR: 0.97 [0.94, 0.996], p = 0.025), triglycerides (OR: 1.01 [1.00-1.02], p = 0.039), hemoglobin (OR: 1.50 [1.11-2.04], p = 0.009), and ß-blocker use (OR: 1.07 [1.01, 1.13], p = 0.013) were all associated with higher GLS. After multivariate logistic regression with backward model selection, only male gender (OR: 5.78 [2.27-14.71], p < 0.001) and ß-blocker use (OR: 14.00 [1.60, 122.51], p = 0.017) remained significant. In simple logistic regression models, BMI (OR: 1.11 [1.02-1.20], p = 0.015), systolic blood pressure (OR: 1.03 [1.00-1.06], p = 0.027) and ß-blocker use (OR: 17.12 [2.15-136.20], p = 0.007) were associated with higher E/SRe - a novel measure of left ventricular filling pressure. After backward elimination, only ß-blocker use (OR: 17.22 [2.16, 137.14], p = 0.007) remained significant. CONCLUSION: Higher GLS and E/SRe are common in ADPKD patients, even in patients with preserved eGFR and normal left ventricular EF. GLS and E/SRe may aid in cardiovascular risk stratification in patients with ADPKD as they represent early markers of cardiac dysfunction.


Assuntos
Contração Miocárdica/fisiologia , Rim Policístico Autossômico Dominante/fisiopatologia , Disfunção Ventricular Esquerda/fisiopatologia , Adulto , Estudos de Casos e Controles , Estudos Transversais , Ecocardiografia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Rim Policístico Autossômico Dominante/sangue , Rim Policístico Autossômico Dominante/complicações , Estudos Prospectivos , Análise de Regressão , Fatores Sexuais , Volume Sistólico , Disfunção Ventricular Esquerda/sangue , Disfunção Ventricular Esquerda/diagnóstico por imagem
20.
J Card Fail ; 25(11): 877-885, 2019 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-31336135

RESUMO

AIMS: The ratio of early mitral inflow velocity to global diastolic strain rate (E/e'sr) has recently emerged as a novel measure of left ventricular (LV) filling pressure. This new measure has demonstrated to have prognostic value superior to E/e'. This study aimed to investigate the prognostic value of E/e'sr in a large cohort of patients with heart failure with reduced ejection fraction (HFrEF) in relation to all-cause mortality. METHODS: We retrospectively studied 897 HFrEF (mean age 66 ± 12 years, 73% male, 59% ischemic cardiomyopathy) patients who underwent speckle tracking echocardiography where E/e'sr along with novel and conventional echocardiographic parameters were obtained. The primary endpoint was defined as all-cause mortality. RESULTS: During follow-up (median: 40 months IQR: 22-57), 137 (15.3%) patients died. Both E/e'sr and E/e' were significantly associated with mortality (E/e'sr: HR 1.03 95%CI [1.02-1.04], p<0.001, per 0.10m increase) and (E/e': HR 1.04 95%CI [1.02-1.06], p = 0.001, per 1unit increase). E/e'sr remained an independent predictor in a multivariable model after adjusting for age, gender, mean arterial pressure, heart rate, BMI, total cholesterol, diabetes mellitus, ischemic cardiomyopathy, LVEF, LVIDd, LVMI, LAVI, TAPSE and LV-GLS (HR 1.02 95%CI [1.01-1.03], p = 0.007) whereas E/e' did not (HR 1.01 95%CI [0.98-1.04], p = 0.57). Furthermore, E/e'sr provided incremental prognostic information beyond a model including known risk factors: age, gender, total cholesterol, mean arterial pressure, heart rate, BMI, smoking status and E/e' (Harrell's C-statistics: 0.72 (0.68-0.77) vs 0.70 (0.66-0.75), p = 0.047). CONCLUSIONS: In HFrEF patients, E/e'sr provides independent and incremental prognostic information regarding all-cause mortality superior to E/e'.


Assuntos
Insuficiência Cardíaca/diagnóstico por imagem , Insuficiência Cardíaca/mortalidade , Volume Sistólico/fisiologia , Disfunção Ventricular Esquerda/diagnóstico por imagem , Disfunção Ventricular Esquerda/mortalidade , Idoso , Estudos de Coortes , Ecocardiografia/mortalidade , Ecocardiografia/tendências , Feminino , Seguimentos , Humanos , Masculino , Pessoa de Meia-Idade , Mortalidade/tendências , Valor Preditivo dos Testes , Estudos Retrospectivos
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