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1.
BMC Health Serv Res ; 24(1): 434, 2024 Apr 05.
Article in English | MEDLINE | ID: mdl-38580940

ABSTRACT

BACKGROUND AND OBJECTIVES: Physician burnout is rampant, and physician retention is increasingly hard. It is unclear how burnout impacts intent to leave an organization. We sought to determine how physician burnout and professional fulfillment impact pediatric physicians' intent to leave (ITL) an organization. DESIGN AND METHODS: We performed 120, 1:1 semi-structured interviews of our pediatric faculty and used the themes therefrom to develop a Likert-scale based, 22-question battery of their current work experience. We created a faculty climate survey by combining those questions with a standardized instrument that assesses burnout and professional fulfillment. We surveyed pediatric and pediatric-affiliated (e.g. pediatric surgery, pediatric psychiatry, etc.) physicians between November 2 and December 9, 2022. We used standard statistical methods to analyze the data. An alpha-level of 0.05 was used to determine significance. RESULTS: A total of 142 respondents completed the survey, 129 (91%) were Department of Pediatrics faculty. Burnout was present in 41% (58/142) of respondents, whereas 30% (42/142) were professionally fulfilled. There was an inverse relationship between professional fulfillment and ITL, p < 0.001 for the trend. Among those who were not professionally fulfilled, the odds ratio of ITL in the next three years was 3.826 [95% CI 1.575-9.291], p = 0.003. There was a direct relationship between burnout and ITL, p < 0.001 for the trend. CONCLUSIONS: Among pediatric physicians, professional fulfillment is strongly, inversely related with ITL in the next three years. Similarly, burnout is directly related with ITL. These data suggest a lack of professional fulfillment and high burnout are strong predictors of pediatric physician turnover.


Subject(s)
Burnout, Professional , Physicians , Humans , Child , Quality Improvement , Burnout, Professional/epidemiology , Intention , Surveys and Questionnaires
2.
Science ; 384(6691): 48-53, 2024 Apr 05.
Article in English | MEDLINE | ID: mdl-38574139

ABSTRACT

Understanding universal aspects of quantum dynamics is an unresolved problem in statistical mechanics. In particular, the spin dynamics of the one-dimensional Heisenberg model were conjectured as to belong to the Kardar-Parisi-Zhang (KPZ) universality class based on the scaling of the infinite-temperature spin-spin correlation function. In a chain of 46 superconducting qubits, we studied the probability distribution of the magnetization transferred across the chain's center, [Formula: see text]. The first two moments of [Formula: see text] show superdiffusive behavior, a hallmark of KPZ universality. However, the third and fourth moments ruled out the KPZ conjecture and allow for evaluating other theories. Our results highlight the importance of studying higher moments in determining dynamic universality classes and provide insights into universal behavior in quantum systems.

3.
Public Health ; 230: 73-80, 2024 May.
Article in English | MEDLINE | ID: mdl-38513300

ABSTRACT

BACKGROUND: Cardiovascular disease (CVD)-related mortality has declined substantially in the United Kingdom (UK) in recent decades, but the continued relevance of conventional risk factors for prediction of CVD mortality throughout the life-course is uncertain. We compared the 10-year risks and lifetime risks of CVD mortality associated with conventional risk factors recorded in middle and old age. METHODS: The Whitehall study was a prospective study of 19,019 male London civil servants (mean age 52 years) when enrolled in 1967-1970 and followed-up for 50 years for cause-specific mortality. In 1997, 7044 (83%) survivors (mean age 77 years) were re-surveyed. The 10-year and lifetime risks of CVD mortality were estimated by levels of CVD risk factors recorded in middle-age and old-age, respectively. RESULTS: By July 2020, 97% had died (22%, 51% and 80% before age 70, 80 and 90 years, respectively) and 7944 of 17,673 deaths (45%) were from CVD. The 10-year and lifetime risks of CVD death increased linearly with higher levels of CVD risk factors recorded in middle-age and in old-age. Individuals in the top versus bottom 5% of CVD risk scores in middle age had a 10.3% (95% CI:7.2-13.4) vs 0.6% (0.1-1.2) 10-year risk of CVD mortality, a 61.4% (59.4-65.3) vs 31.3% (24.1-34.5) lifetime risk of CVD mortality and a 12-year difference in life expectancy from age 50 years. The corresponding differences using a CVD risk score in old-age were 11.0% (4.4-17.5) vs 0.8% (0.0-2.2) for 10-year risk and 42.1% (28.2-50.0) vs 30.3% (6.0-38.0) for lifetime risk of CVD mortality and a 6-year difference in life expectancy from age 70 years. CONCLUSIONS: Conventional risk factors remained highly predictive of CVD mortality and life expectancy through the life-course. The findings highlight the relevance of estimation of both lifetime risks of CVD and 10-year risks of CVD for primary prevention of CVD.


Subject(s)
Cardiovascular Diseases , Middle Aged , Humans , Male , Aged , Child , London/epidemiology , Prospective Studies , Follow-Up Studies , Risk Factors , Cardiovascular Diseases/prevention & control
4.
Science ; 383(6689): 1332-1337, 2024 Mar 22.
Article in English | MEDLINE | ID: mdl-38513021

ABSTRACT

Engineered dissipative reservoirs have the potential to steer many-body quantum systems toward correlated steady states useful for quantum simulation of high-temperature superconductivity or quantum magnetism. Using up to 49 superconducting qubits, we prepared low-energy states of the transverse-field Ising model through coupling to dissipative auxiliary qubits. In one dimension, we observed long-range quantum correlations and a ground-state fidelity of 0.86 for 18 qubits at the critical point. In two dimensions, we found mutual information that extends beyond nearest neighbors. Lastly, by coupling the system to auxiliaries emulating reservoirs with different chemical potentials, we explored transport in the quantum Heisenberg model. Our results establish engineered dissipation as a scalable alternative to unitary evolution for preparing entangled many-body states on noisy quantum processors.

5.
Hong Kong Med J ; 30 Suppl 1(1): 3, 2024 Feb.
Article in English | MEDLINE | ID: mdl-38413203
6.
Pediatr Cardiol ; 2024 Jan 18.
Article in English | MEDLINE | ID: mdl-38236399

ABSTRACT

Left ventricular systolic dysfunction (LVSD) is frequently observed following repair of ventricular septal defects (VSD), although little is known about its incidence, time course, or risk factors. Among infants undergoing VSD repair, for postoperative LVSD, we sought to determine (1) incidence, (2) predictors, and (3) time to resolution. We queried our institution's surgical database for infants who underwent repair of isolated VSDs from November 2001 through January 2019. The primary outcome was postoperative LVSD, which was defined as a shortening fraction (SF) of <26% by M-mode. Postoperative echocardiograms were reviewed, and measurements were made using standard methods. Receiver operating characteristic analysis was generated to determine the preoperative left ventricular internal dimension (LVIDd) z-score most predictive of LVSD. Multivariable analysis was conducted to determine associations with LVSD; covariates in the model were weight percentile, genetic syndrome, preoperative diuretic, VSD type, and preoperative LVIDd z-score. Of the 164 patients who met inclusion criteria, 62 (38%) had postoperative LVSD. Fifty-eight (94%) of patients had resolution of LVSD within 9 months of surgery. Preoperative LVIDd z-score of >3.1 was associated with both an increased incidence of postoperative LVSD and prolonged time to resolution. Multivariable logistic regression analysis showed only preoperative LVIDd z-score was independently associated with postoperative LVSD. LVSD following VSD closure is common, but nearly all cases resolve by 9 months postoperatively. Elevated LVIDd prior to surgery is associated with postoperative LVSD. These data suggest VSD closure should be considered prior to the development of significant left ventricular dilation.

8.
Hong Kong Med J ; 29 Suppl 7(6): 3, 2023 Dec.
Article in English | MEDLINE | ID: mdl-38148647
9.
Arch Rheumatol ; 38(3): 358-366, 2023 Sep.
Article in English | MEDLINE | ID: mdl-38046250

ABSTRACT

Objectives: This study aimed to determine if the presence of a pericardial effusion is associated with adverse outcomes among children admitted with juvenile idiopathic arthritis. Patients and methods: The multicenter, retrospective cohort study was conducted with 4,332 patients (1,554 males, 2,778 females; median age: 12 years; IQR, 7, 15 years) using the Pediatric Health Information System. Data from hospital admissions between January 1, 2004, and September 15, 2015, were obtained for patients with an International Disease Classification, Ninth Revision code for juvenile idiopathic arthritis. Pericardial effusion was the primary predictor variable; the outcomes of interest were length of stay, hospital costs, and readmission within 90 days. Multivariate models were created to evaluate associations between pericardial effusion and adverse outcomes. We also analyzed factors associated with increased odds of having pericardial effusion in juvenile idiopathic arthritis. Results: One hundred twenty (3%) patients had a code for pericardial effusion. Children with pericardial effusion had a longer median length of stay (7 days (IQR 3, 12) vs. 3 days (IQR 2,6), p<0.001), higher median costs ($17,688 (IQR 8,657, 40,623) vs. $8,456 (IQR 4,865, 16,302), p<0.001), and greater rates of readmission (22% vs. 15%, p=0.045). Multivariate analysis demonstrated no significant association between pericardial effusion and outcomes of interest. Black race and male sex were associated with increased odds of having pericardial effusion. Conclusion: Pericardial effusion is rare among children admitted with juvenile idiopathic arthritis but is associated with significant morbidity; its presence may be a marker of disease severity. Black children and males admitted with juvenile idiopathic arthritis warrant special consideration and may benefit from screening echocardiography.

10.
J Am Heart Assoc ; 12(21): e030083, 2023 11 07.
Article in English | MEDLINE | ID: mdl-37929767

ABSTRACT

Background Although aortic dilation is common in tetralogy of Fallot (TOF), its progression and risk of dissection are not well understood. The mechanism of dilation is primarily attributed to increased flow in utero; an alternative is unequal septation of the truncus arteriosus resulting in a larger aorta and inherently hypoplastic pulmonary artery (PA). If the latter is true, we hypothesize the aorta to PA ratio in TOF is stable throughout gestation, and sums of great artery dimensions are similar to controls. Methods and Results We performed a single-center retrospective study of fetuses with TOF (2014-2020) and matched controls. We compared sums of diameters, circumferences, and cross-sectional areas of the aorta and PA and evaluated the aorta to PA ratio across gestation in 2 TOF subtypes: pulmonary stenosis and atresia (TOF-PA). There were 100 echocardiograms with TOF (36% TOF-PA) with median gestational age of 31 weeks (interquartile range 26.5-34.4) and median maternal age of 34 years (interquartile range 30-37). There were no differences in sums of great artery dimensions between TOF-pulmonary stenosis and controls. In TOF-PA, sums were significantly lower than controls (P values <0.01). The aorta to PA ratio was stable throughout gestation (Pearson's r=0.08 [95% CI, -0.12 to 0.27], -0.06 [95% CI, -0.25 to 0.14]). Conclusions The aorta in fetal TOF is large but grows proportionally throughout gestation, with sums of great artery dimensions similar to controls. TOF-PA appears distinct from TOF-pulmonary stenosis (with smaller sums), warranting further investigation. In conclusion, our findings suggest an intrinsic developmental mechanism contributes to aortic dilation in TOF.


Subject(s)
Aortic Diseases , Pulmonary Valve Stenosis , Tetralogy of Fallot , Female , Humans , Infant , Tetralogy of Fallot/surgery , Retrospective Studies , Dilatation , Aorta
11.
Pediatr Cardiol ; 45(1): 107-113, 2024 Jan.
Article in English | MEDLINE | ID: mdl-37882809

ABSTRACT

OBJECTIVE: Cardiovascular abnormalities are common in patients with Williams syndrome and frequently require surgical intervention necessitating analgesia and sedation in a population with a unique neuropsychiatric profile, potentially increasing the risk of adverse cardiac events during the perioperative period. Despite this risk, the overall postoperative analgosedative requirements in patients with WS in the cardiac intensive care unit have not yet been investigated. Our primary aim was to examine the analgosedative requirement in patients with WS after cardiac surgery compared to a control group. Our secondary aim was to compare the frequency of major ACE and mortality between the two groups. DESIGN: Matched case-control study. SETTING: Pediatric CICU at a Tertiary Children's Hospital. PATIENTS: Patients with WS and age-matched controls who underwent cardiac surgery and were admitted to the CICU after cardiac surgery between July 2014 and January 2021. INTERVENTIONS: None. MEASUREMENTS AND MAIN RESULTS: Postoperative outcomes and total doses of analgosedative medications were collected in the first six days after surgery for the study groups. Median age was 29.8 (12.4-70.8) months for WS and 23.5 (11.2-42.3) months for controls. Across all study intervals (48 h and first 6 postoperative days), there were no differences between groups in total doses of morphine equivalents (5.0 mg/kg vs 5.6 mg/kg, p = 0.7 and 8.2 mg/kg vs 10.0 mg/kg, p = 0.7), midazolam equivalents (1.8 mg/kg vs 1.5 mg/kg, p = 0.4 and 3.4 mg/kg vs 3.8 mg/kg, p = 0.4), or dexmedetomidine (20.5 mcg/kg vs 24.4 mcg/kg, p = 0.5 and 42.3 mcg/kg vs 39.1 mcg/kg, p = 0.3). There was no difference in frequency of major ACE or mortality. CONCLUSIONS: Patients with WS received similar analgosedative medication doses compared with controls. There was no significant difference in the frequency of major ACE (including cardiac arrest, extracorporeal membrane oxygenation, and surgical re-intervention) or mortality between the two groups, though these findings must be interpreted with caution. Further investigation is necessary to elucidate the adequacy of pain/sedation control, factors that might affect analgosedative needs in this unique population, and the impact on clinical outcomes.


Subject(s)
Cardiac Surgical Procedures , Dexmedetomidine , Williams Syndrome , Humans , Child , Adult , Hypnotics and Sedatives , Dexmedetomidine/adverse effects , Case-Control Studies , Williams Syndrome/surgery , Williams Syndrome/drug therapy , Cardiac Surgical Procedures/adverse effects , Intensive Care Units, Pediatric , Retrospective Studies
12.
Sex Reprod Health Matters ; 31(1): 2260169, 2023 Dec.
Article in English | MEDLINE | ID: mdl-37850724

ABSTRACT

PLAIN LANGUAGE STATEMENT: Gender norms that centre men and disadvantage women create gender inequality, which can lead to risky sexual behaviour. This study examined how both community and individual attitudes toward gender norms influenced risky sexual behaviour in adolescents, and whether that influence was different between males and females. We found that higher gender-equitable attitudes were linked to increased odds of HIV testing in the last 12 months, and decreased odds of engaging in a sexual relationship with a much older partner. Individual high gender-equitable attitudes among girls were also linked to higher odds of them using condoms and contraceptives. Gender-equitable attitudes did not seem to influence early sexual debut, engagement in transactional sex, having multiple sexual partners at the same time, or the number of sexual partners a participant had in the last 12 months. Based on these findings, programming designed to increase gender-equitable attitudes might be helpful in increasing HIV testing and condom and contraceptive use, but it needs to involve the entire community, not just individual boys and girls.


Subject(s)
Gender Equity , Single Person , Male , Humans , Female , Adolescent , Tanzania , Longitudinal Studies , Sexual Behavior
14.
Hong Kong Med J ; 29 Suppl 4(4): 3, 2023 Aug.
Article in English | MEDLINE | ID: mdl-37690797
15.
QJM ; 116(9): 820-821, 2023 Oct 06.
Article in English | MEDLINE | ID: mdl-37498588
16.
Hong Kong Med J ; 29 Suppl 3(3): 3, 2023 Jun.
Article in English | MEDLINE | ID: mdl-37357581
17.
Birth Defects Res ; 115(12): 1151-1162, 2023 07 01.
Article in English | MEDLINE | ID: mdl-37309307

ABSTRACT

Oxidative stress and redox imbalance adversely affect embryonic development. We developed two oxidative balance scores (OBS) that include dietary and nondietary exposures. We hypothesized that higher scores (i.e., lower oxidative stress) would be associated with lower risk of neural tube defects, orofacial clefts, conotruncal heart defects, and limb deficiencies. We used data from the National Birth Defects Prevention Study to create a dietary OBS based on intake of 13 nutrients and an overall OBS that included the 13 nutrients and eight additional nondietary factors related to oxidative balance (e.g., smoking). We used logistic regression to examine odds ratios associated with having low or high scores (i.e., <10th or >90th percentiles). Continuous models indicated reduced odds associated with high versus low scores (i.e., comparing odds at the 90th versus 10th percentile values of the distribution) on the overall OBS for cleft lip with or without cleft palate [adjusted odds ratio (aOR) 0.72, 95% confidence interval (CI) 0.63-0.82], longitudinal limb deficiency (aOR 0.73, CI 0.54-0.99), and transverse limb deficiency (aOR 0.74, CI 0.58-0.95); increased odds for anencephaly (aOR 1.40, CI 1.07-1.84); and primarily nonsignificant associations with conotruncal heart defects. Results for the dietary OBS were similar. This study provides some evidence that oxidative stress contributes to congenital anomalies related to neural crest cell development.


Subject(s)
Cleft Lip , Cleft Palate , Heart Defects, Congenital , Pregnancy , Female , Humans , Cleft Lip/etiology , Cleft Lip/prevention & control , Cleft Palate/etiology , Cleft Palate/prevention & control , Neural Crest , Case-Control Studies , Heart Defects, Congenital/etiology
18.
J Racial Ethn Health Disparities ; 2023 Jun 07.
Article in English | MEDLINE | ID: mdl-37285049

ABSTRACT

African immigrants remain underrepresented in research due to challenges in recruitment. Mobile instant messaging applications, such as WhatsApp, present novel, and cost-effective opportunities for conducting health research across geographic and temporal distances, potentially mitigating the challenges of maintaining contact and engagement in research with migrant populations. Moreover, WhatsApp has been found to be commonly used by African immigrant communities. However, little is known about the acceptability and use of WhatsApp as a tool for health research among African immigrants in the US. In this study, we examine the acceptability and feasibility of WhatsApp as a tool for research among Ghanaian immigrants- a subset of the African immigrant population group. We used WhatsApp to recruit 40 participants for a qualitative interview about their use of the mobile messaging application. Three distinct themes related to the acceptability and feasibility of WhatsApp emerged from the interviews: (1) preference for using WhatsApp as a medium of communication; (2) positive perception of WhatsApp; and (3) preference for using WhatsApp for research. The findings indicate that for African immigrants in the US, WhatsApp is a preferred method for recruiting and collecting data. It remains a promising strategy to utilize in future research involving this population.

20.
Sci Total Environ ; 890: 164051, 2023 Sep 10.
Article in English | MEDLINE | ID: mdl-37201833

ABSTRACT

Atmospheric transport and wet deposition have contributed to the worldwide distribution of per- and polyfluoroalkyl substances (PFAS) in terrestrial and aquatic ecosystems, even in remote areas far from known industrial sources. However, little is known regarding the impact of cloud and precipitation formation dynamics on PFAS transport and wet deposition, nor the range of variability in PFAS concentrations within a closely distributed monitoring network. Precipitation samples were collected from a network of 25 stations in a focused geographic region (the Commonwealth of Massachusetts, USA) from stratiform and convective storm systems to evaluate if the different cloud and precipitation formation mechanisms in these two fundamental types of storm systems influenced PFAS concentrations in precipitation, and to assess the range of variability in PFAS concentrations in precipitation at a regional scale. PFAS were detected in 11 of 50 discrete precipitation events. Of the 11 events from which PFAS were detected, 10 of the events were convective in nature. PFAS were detected during only one stratiform event at one station. This suggests that local and regional atmospheric PFAS sources entrained by convection events controls regional atmospheric PFAS flux, and that PFAS flux estimates should consider the type and magnitude of precipitation events. The PFAS detected were primarily perfluorocarboxylic acids, with relatively higher detection frequency for shorter-chained compounds. Compilation of PFAS data from precipitation across primarily the eastern United States, from urban, suburban, and rural areas, including those in industrial areas, indicates population density is a poor predictor of precipitation PFAS concentrations. While the total PFAS concentration in precipitation in some areas exceeds 100 ng/L, the median concentrations across all areas are generally less than about 10 ng/L.


Subject(s)
Alkanesulfonic Acids , Fluorocarbons , Water Pollutants, Chemical , Ecosystem , Environmental Monitoring , Rain , Massachusetts , Fluorocarbons/analysis , Water Pollutants, Chemical/analysis
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