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Nevin Manimala Statistics

Impaired Left Atrial Function in Patients with Atrial Septal Defect and History of Atrial Fibrillation

Int Heart J. 2022;63(5):864-873. doi: 10.1536/ihj.22-265.

ABSTRACT

In patients with atrial septal defect (ASD), atrial left-to-right shunting causes left atrial (LA) remodeling and dysfunction, leading to atrial fibrillation (AF). In adults with ASD and concomitant AF, LA function should be evaluated after ASD closure plus AF radiofrequency catheter ablation (RFCA).This multicenter retrospective cohort study included patients who underwent transcatheter ASD closure at one of the four leading hospitals. Patients with a history of AF also underwent preceding RFCA. The association between AF history and LA ejection fraction (EF) (indicating LA global function) at 6-12 months following ASD closure was evaluated. To account for differences in baseline characteristics between patients with and without a history of AF, we conducted the following statistical methods: (1) multivariate regression analysis in the prepropensity score (PS)-matched cohort and (2) univariate comparisons in the PS-matched cohort.Overall, this study included 231 patients (30 with AF history, 201 without). Multiple regression analysis showed that AF history was independently associated with impaired LAEF (β = -10.425, P < 0.001, model created prior to propensity matching). A one-to-one PS matching (25 pairs) showed that the LAEF at 6-12 months following ASD closure was significantly impaired in patients with ASD and AF history compared to that in patients without history of AF (median LAEF, 37.5% (interquartile range [IQR] 29.4%-48.5%) versus 52.3 [IQR 50.0%-56.6%]; P < 0.001).LA function was impaired in patients with ASD and a history of AF at 6-12 months after successful transcatheter ASD closure and on maintenance of sinus rhythm by RFCA.

PMID:36184548 | DOI:10.1536/ihj.22-265

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Scale of psychological pain: Spanish adaptation of the Psychache Scale in young adults

Rev Psiquiatr Salud Ment (Engl Ed). 2022 Sep 29:S2173-5050(22)00044-9. doi: 10.1016/j.rpsmen.2022.09.006. Online ahead of print.

ABSTRACT

INTRODUCTION: Psychological pain is understood as an intolerable and disturbing mental state characterized by an internal experience of negative emotions. This study was aimed at making a Spanish adaptation of the Psychache Scale by Holden and colleagues in a sample of young adults.

MATERIAL AND METHODS: The scale evaluates psychological pain as a subjective experience. It is composed of 13 items with a Likert-type response format. Following the guidelines of the International Tests Commission for the adaptation of the test, we obtained a version conceptually and linguistically equivalent to the original scale. Through an online questionnaire, participants completed the psychological pain scale along with other scales to measure depression (BDI-II), hopelessness (Beck’s scale of hopelessness) and suicide risk (Plutchik suicide risk scale). The participants were 234 people (94 men, 137 women and three people who identified as a different sex) from 18 to 35 years old.

RESULTS: The EFA showed a one-factor solution, and the FCA revealed adequate indexes of adjustment to the unifactorial model. It also showed good reliability of the test scores. The evidence of validity of the scale in relation to the other variables showed high, positive and statistically significant correlations with depression, hopelessness, suicidal ideation and suicidal risk.

CONCLUSION: In summary, this Spanish adaptation of the Psychache Scale could contribute to improving the evaluation of both the patient with suicide risk and the effectiveness of psychological therapy, as well as suicidal behaviour prevention and intervention.

PMID:36184539 | DOI:10.1016/j.rpsmen.2022.09.006

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Targeted Multiparametric Magnetic Resonance Imaging/Ultrasound Fusion Biopsy for Quantitative Gleason 4 Grading Prediction in Radical Prostatectomy Specimens: Implications for Active Surveillance Candidate Selection

Eur Urol Focus. 2022 Sep 29:S2405-4569(22)00217-6. doi: 10.1016/j.euf.2022.09.010. Online ahead of print.

ABSTRACT

BACKGROUND: Quantitative Gleason grading appears to be a reliable prognostic parameter and provides broader risk stratification then the traditional Gleason grading in patients with prostate cancer (PCa) treated with radical prostatectomy (RP).

OBJECTIVE: To determine if quantification of Gleason pattern (GP) 4 for targeted and systematic biopsy (TBx + SBx) cores together with further clinical variables can identify the lowest quantitative GP 4 fraction on RP.

DESIGN, SETTING, AND PARTICIPANTS: A total of 548 patients underwent TBx + SBx of the prostate and then RP, with pathology revealing Gleason score 3 + 4, 4 + 3, or 4 + 4 disease.

INTERVENTION: TBx + SBx of the prostate followed by RP.

OUTCOME MEASUREMENTS AND STATISTICAL ANALYSIS: GP 4 fraction thresholds of ≤5%, ≤10%, ≤15%, ≤20%, and ≤25% were compared between the TBx + SBx and RP specimens. The sensitivity, specificity, negative predictive value (NPV), positive predictive value (PPV), and accuracy for predicting the GP 4 fraction in the RP specimen were determined. Logistic regression models were used to establish a probabilistic relationship between various combinations of clinical and biopsy variables and the GP 4 fraction in the RP specimen.

RESULTS AND LIMITATIONS: GP 4 fractions of ≤5%, ≤10%, ≤15%, ≤20%, and ≤25% was observed in 33%, 49%, 58%, 65%, and 70% of patients on TBx, and 18%, 41%, 53%, 63%, and 70% of patients on RP, respectively. The sensitivity, specificity, NPV, PPV, and accuracy were 75%, 67%, 91%, 39%, and 74% for a TBx GP 4 fraction of ≤5%, and 65%, 85%, 65%, 85%, and 79% for a TBx GP 4 fraction of ≤25%, respectively. A model combining quantified TBx + SBx GP 4 with clinical parameters demonstrated the highest diagnostic accuracy. Limitations include the retrospective study design.

CONCLUSIONS: Our results demonstrate that the combination of MRI-TBx + SBx and GP 4 quantification allowed precise detection of a low fraction of GP 4 when using RP specimens as the reference standard. Moreover, we found that clinical variables including Prostate Imaging-Reporting and Data System score without biopsy are limited in detection of low GP 4 fractions.

PATIENT SUMMARY: Combination of targeted biopsy alone as well as combined with systematic biopsy and quantitative Gleason grading of biopsy specimen showed high agreement with pathology findings after surgical removal of the prostate. This could help in identifying patients who are suitable for active surveillance.

PMID:36184537 | DOI:10.1016/j.euf.2022.09.010

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Sex-based outcomes after surgery for acute type A aortic dissection

J Card Surg. 2022 Oct 2. doi: 10.1111/jocs.16988. Online ahead of print.

ABSTRACT

BACKGROUND: While prior data have suggested worse outcomes in women after acute type A aortic dissection (ATAAD) repair when compared to men, results have been inconsistent across studies over time. This study sought to evaluate the impact of sex on short- and long-term outcomes after ATAAD repair.

METHODS: This was a retrospective study utilizing an institutional database of ATAAD repairs from 2007 to 2021. Patients were stratified according to sex. Kaplan-Meier survival estimation and multivariable Cox regression were performed. Supplementary analysis using propensity score matching was also performed.

RESULTS: Of the 601 patients who underwent ATAAD repair, 361 were males (60.1%) and 240 (39.9%) were females. Females were significantly older, more likely to have hypertension, and more likely to have chronic lung disease. Females were also significantly more likely than males to undergo hemiarch replacement, while males were significantly more likely than females to undergo total arch replacement and frozen elephant trunk. Operative mortality was 9.4% among males and 13.8% among females, though this was not a statistically significant difference (p = .098). Postoperative complications were comparable between groups. Kaplan-Meier survival estimates were similar for men and women, and, on multivariable Cox regression, sex was not significantly associated with long-term survival (hazard ratio: 1.00, 95% confidence interval: 0.73, 1.37, p = .986). Outcomes remained comparable after supplementary propensity score matched analysis.

CONCLUSION: ATAAD repair can be performed with comparable short-term and long-term outcomes in both men and women.

PMID:36183385 | DOI:10.1111/jocs.16988

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One-stage repair of transposition complex and interrupted aortic arch in children

J Card Surg. 2022 Oct 2. doi: 10.1111/jocs.16984. Online ahead of print.

ABSTRACT

BACKGROUND/AIM: A transposition complex with an interrupted aortic arch (IAA) is rare and surgically challenging because of its anatomical diversity and complexity. Herein, we aimed to present our 20-year experience with one-stage arterial switch surgery associated with IAA repair.

METHODS: From January 2000 to April 2017, 11 patients were diagnosed with transposition complex and IAA and underwent one-stage repair at our center. These patients were retrospectively reviewed. Two patients had transposition of the great arteries, while the others had double outlet right ventricles, of whom eight had subpulmonary ventricular septal defects (VSDs; Taussig-Bing anomalies), and one had a noncommitted VSD. In terms of the IAA, three patients underwent repair by extended end-to-end anastomosis, and one 16-mm prosthetic vascular graft was replaced in an elder patient. The remaining patients underwent autologous pericardial patch enlargement. All the variables were summarized and reported with descriptive statistics.

RESULTS: Three early deaths occurred in this study. The median follow-up time was approximately 5 years (range: 3-14 years). No late deaths were reported. Only one patient required percutaneous re-intervention for recurrent coarctation. Moderate aortic regurgitation was observed in three patients. However, there was no requirement for aortic valvuloplasty or valve replacement. One patient had more than moderate tricuspid regurgitation. The other survivors are presently healthy.

CONCLUSIONS: Although one-stage repair for transposition complex and IAA still has non-negligible mortality even in older children, the late outcomes of survivors are acceptable. Owing to the high rate of valve regurgitation, closer follow-up is necessary for these patients.

PMID:36183381 | DOI:10.1111/jocs.16984

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Three-year change in corneal asphericity in children at the age of emmetropisation

Ophthalmic Physiol Opt. 2022 Oct 2. doi: 10.1111/opo.13056. Online ahead of print.

ABSTRACT

PURPOSE: To determine the 3-year changes in anterior and posterior values of corneal asphericity (Q) in 6- to 12-year-old children.

METHODS: The first and second phases of the study were conducted in 2015 and 2018, respectively. The target population in the first phase was 6- to 12-year-old students in Shahroud, Iran. Multistage cluster sampling was performed on urban students. Additionally, all rural students in Shahroud county were invited to participate. Corneal imaging and ocular biometry were performed using the Pentacam-HR and Allegro Biograph, respectively.

RESULTS: A total of 4961 right eyes were analysed in this report. The mean (95% confidence interval) anterior and posterior Q values for an 8-mm chord diameter were -0.38 ± 0.11 (-0.39 to -0.38) and -0.32 ± 0.12 (-0.33 to -0.32) in the first phase of the study, respectively. The mean 3-year changes in anterior and posterior Q values were 0.00 ± 0.08 (95% CI: 0.00-0.00) and -0.01 ± 0.06 (95% CI: -0.01 to -0.01), respectively. Based on a multiple regression model, advancing age (β = -0.002; [-0.003 to -0.001]), 3-year increase in mean keratometry (β = -0.04; [-0.06 to -0.02]), central corneal thickness (β = -0.001; [-0.001 to -0.000]), lens thickness (-0.05; [-0.11 to -0.003]) and anterior chamber depth (-0.09; [-0.15 to -0.03]) showed a statistically significant association with increased anterior Q prolation. Increased axial length was associated with a decrease in Q (β = 0.02; [0.004 to 0.03]). In addition, female gender (β = -0.004; [-0.007 to -0.001]) was significantly associated with a more prolate posterior Q value, while rural residence (β = 0.005; [0.002 to 0.009]) was significantly associated with a more oblate posterior Q value.

CONCLUSION: Three-year changes in anterior and posterior Q values were very small. The cornea tends to become more prolate with increasing age.

PMID:36183360 | DOI:10.1111/opo.13056

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Geospatial insights into the controls of microbialite formation at Laguna Negra, Argentina

Geobiology. 2022 Oct 2. doi: 10.1111/gbi.12529. Online ahead of print.

ABSTRACT

Microbialites provide a record of the interaction of microorganisms with their environment constituting a record of microbial life and environments through geologic time. Our capacity to interpret this record is limited by an incomplete understanding of the microbial, geochemical, and physical processes that influence microbialite formation and morphogenesis. The modern system Laguna Negra in Catamarca Province, Argentina contains microbialites in a zone of carbonate precipitation associated with physico-chemical gradients and variable microbial community structure, making it an ideal location to study how these processes interact to drive microbialite formation. In this study, we investigated the geospatial relationships between carbonate morphology, geochemistry, and microbial community at the macro- (decimeter) to mega- (meter) scale by combining high-resolution imagery with field observations. We mapped the distribution of carbonate morphologies and allochtonously-derived volcaniclasts and correlated these with sedimentary matrices and geochemical parameters. Our work shows that the macroscale distribution of different carbonate morphologies spatially correlates with microbial mat distributions-a result consistent with previous microscale observations. Specifically, microbialitic carbonate morphologies more commonly occur associated with microbial mats while abiotically derived carbonate morphologies were less commonly associated with microbial mats. Spatial variability in the size and abundance of mineralized structures was also observed, however, the processes controlling this variability remains unclear and likely represent a combination of microbial, geochemical, and physical processes. Likewise, the processes controlling the spatial distribution of microbial mats at Laguna Negra are also unresolved. Our results suggest that in addition to the physical drivers observed in other modern environments, variability in the spatial distribution of microbialites and other carbonate morphologies at the macro- to megascale can be controlled by microbial processes. Overall, this study provides insight into the interpretation of microbialite occurrence and distributions in the geologic record and highlights the utility of geospatial statistics to probe the controls of microbialite formation in other environments.

PMID:36183342 | DOI:10.1111/gbi.12529

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Fecal microbiota transplantation may reduce the mortality of patients with severe and fulminant clostridioides difficile infection compared to standard of care antibiotics in a community hospital

J Dig Dis. 2022 Oct 2. doi: 10.1111/1751-2980.13134. Online ahead of print.

ABSTRACT

AIM: Clostridioides difficile Infection (CDI) is known for significant morbidity and mortality. Fecal microbiota transplantation (FMT) is an effective therapy for recurrent and resistant CDI. However, its impact on the mortality rate of patients with severe and fulminant CDI has not been rigorously studied yet. We evaluated the effectiveness of FMT on the mortality rate of patients with severe or fulminant CDI in a community hospital system.

METHODS: Our study included 106 inpatients with severe or fulminant CDI. Both standard of care (SOC) and FMT were provided to 14 (13.2%) patients (FMT group). SOC antibiotics alone were provided to 92 (86.8%) patients out of whom we selected 28 controls via propensity score matching (SOC group).

RESULTS: The primary outcome was defined as the composite endpoint of mortality during admission, within 30 and 90 days after discharge, and discharge with comfort measures only. Each component was a secondary endpoint. The primary outcome rate in the FMT group was 7.1% (n=1/14) compared to 25% (n=7/28) in the SOC group. The univariate analysis demonstrated that FMT decreases mortality (odds ratio = 0.08, 95% confidence intervals 0.01 – 0.58, P = 0.01), however multivariate regression did not show statistical significance (odds ratio = 0.15, 95% confidence intervals 0.01 – 2.53, P = 0.19) possibly due to the small sample size.

CONCLUSIONS: FMT may decrease the mortality of patients with severe and fulminant CDI, and larger studies are needed to validate these findings.

PMID:36183340 | DOI:10.1111/1751-2980.13134

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The impact of price promotions on sales of unhealthy food and drink products in British retail stores

Health Econ. 2022 Oct 2. doi: 10.1002/hec.4607. Online ahead of print.

ABSTRACT

We study the health impact of food and beverage price promotion strategies-multi-buy offers and price discounts, typically biased toward unhealthy product categories-in British consumer retail. We are the first to employ econometric models from the marketing literature to analyze the impact of price promotions with a focus on population health. Our dynamic, reduced form demand model incorporates endogenous inventory (stock piling), consumption rates imputed from repeat purchases and allows for unobserved household heterogeneity. We find that removing price discounts is more effective for reducing purchase volume compared to removing multi-buy offers for 10 out of 12 food and drink groups, particularly those products for which price reduction is more common than multibuy. We find that price promotions induce consumption-and waste -through behavioral effects, associated with increased household inventory (stockpiling).

PMID:36183337 | DOI:10.1002/hec.4607

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Peer-facilitated interventions for improving the physical health of people with schizophrenia spectrum disorders: systematic review and meta-analysis

Med J Aust. 2022 Oct 2;217 Suppl 7:S22-S28. doi: 10.5694/mja2.51693.

ABSTRACT

OBJECTIVES: To evaluate the efficacy of peer-facilitated interventions for improving the physical health of people with schizophrenia spectrum disorders.

STUDY DESIGN: Systematic review and random effects meta-analysis of peer-facilitated interventions for people with serious mental illness, including schizophrenia spectrum disorders, in which physical health outcomes were assessed.

DATA SOURCES: MEDLINE, PsycINFO, EMBASE, CINAHL, Web of Science, Scopus, CENTRAL, and PubMed. In addition, reference lists of reviews were examined for further relevant studies published to 10 November 2021.

DATA SYNTHESIS: We included fourteen publications (thirteen randomised controlled trials of ten peer-facilitated interventions, and one secondary analysis; total of 2099 participants) that assessed physical health outcomes for people with mental health conditions, including schizophrenia spectrum disorders. Intervention duration ranged from three to eighteen months; peers were involved as sole or co-leaders of the programs in group or individual sessions. Meta-analysis identified a statistically significant pooled effect on physical activity and capacity (various measures; six studies; 468 intervention, 461 control participants; standardised mean difference, +0.19 standard deviation [SD]; 95% CI, +0.06-0.32 SD; I2 = 0%); overall GRADE certainty of evidence was low. Marked study heterogeneity precluded secure conclusions regarding intervention effects on self-rated physical health, healthy eating, and body mass index.

CONCLUSIONS: Peer-facilitated interventions for improving physical outcomes are feasible for people with schizophrenia spectrum disorders, a group at particular risk of certain physical health conditions. Further research is required to assess the effects of such interventions on other health-related parameters.

PROSPERO REGISTRATION: CRD42021283578 (retrospective).

PMID:36183320 | DOI:10.5694/mja2.51693