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Nevin Manimala Statistics

The effect of SARS-COV-2 variant on non-respiratory features and mortality among vaccinated and non-fully vaccinated patients

Vaccine. 2024 Mar 14:S0264-410X(24)00195-6. doi: 10.1016/j.vaccine.2024.02.036. Online ahead of print.

ABSTRACT

OBJECTIVE: To determine the effect of SARS-CoV-2 variants on non-respiratory features of COVID-19 in vaccinated and not fully vaccinated patients using a University of California database.

METHODS: A longitudinal retrospective review of medical records (n = 63,454) from 1/1/2020-4/26/2022 using the UCCORDS database was performed to compare non-respiratory features, vaccination status, and mortality between variants. Chi-square tests were used to study the relationship between categorical variables using a contingency matrix.

RESULTS: Fever was the most common feature across all variants. Fever was significantly higher in not fully vaccinated during the Delta and Omicron waves (p = 0.001; p = 0.001). Cardiac features were statistically higher in not fully vaccinated during Omicron; tachycardia was only a feature of not fully vaccinated during Delta and Omicron; diabetes and GI reflux were features of all variants regardless of vaccine status. Odds of death were significantly increased among those not fully vaccinated in the Delta and Omicron variants (Delta OR: 1.64, p = 0.052; Omicron OR: 1.96, p < 0.01). Vaccination was associated with a decrease in the frequency of non-respiratory features.

CONCLUSIONS: Risk of non-respiratory features of COVID-19 is statistically higher in those not fully vaccinated across all variants. Risk of death and correlation with vaccination status varied.

PMID:38490824 | DOI:10.1016/j.vaccine.2024.02.036

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Evaluation of 4D Flow MRI-Derived Relative Residence Time as a Marker for Cirrhosis Associated Portal Vein Thrombosis

J Magn Reson Imaging. 2024 Mar 15. doi: 10.1002/jmri.29357. Online ahead of print.

ABSTRACT

BACKGROUND: Portal vein thrombosis (PVT) is thought to arise from stagnant blood flow, yet conclusive evidence is lacking. Relative residence time (RRT) assessed using 4D Flow MRI may offer insight into portal flow stagnation.

PURPOSE: To explore the relationship between RRT values and the presence of PVT in cirrhotic participants.

STUDY TYPE: Prospective.

POPULATION: Forty-eight participants with liver cirrhosis (27 males, median age 67 years [IQR: 57-73]) and 20 healthy control participants (12 males, median age 45 years [IQR: 40-54]).

FIELD STRENGTH/SEQUENCE: 3 T/4D Flow MRI.

ASSESSMENT: Laboratory (liver and kidney function test results and platelet count) and clinical data (presence of tumors and other imaging findings), and portal hemodynamics derived from 4D Flow MRI (spatiotemporally averaged RRT [RRT-mean], flow velocity, and flow rate) were analyzed.

STATISTICAL TESTS: We used multivariable logistic regression, adjusted by selected covariates through the Lasso method, to explore whether RRT-mean is an independent risk factor for PVT. The area under the ROC curve (AUC) was also calculated to assess the model’s discriminative ability. P < 0.05 indicated statistical significance.

RESULTS: The liver cirrhosis group consisted of 16 participants with PVT and 32 without PVT. Higher RRT-mean values (odds ratio [OR] 11.4 [95% CI: 2.19, 118]) and lower platelet count (OR 0.98 per 1000 μL [95% CI: 0.96, 0.99]) were independent risk factors for PVT. The incorporation of RRT-mean (AUC, 0.77) alongside platelet count (AUC, 0.75) resulted in an AUC of 0.84. When including healthy control participants, RRT-mean had an adjusted OR of 12.4 and the AUC of the combined model (RRT-mean and platelet count) was 0.90.

DATA CONCLUSION: Prolonged RRT values and low platelet count were significantly associated with the presence of PVT in cirrhotic participants. RRT values derived from 4D Flow MRI may have potential clinical relevance in the management of PVT.

EVIDENCE LEVEL: 2 TECHNICAL EFFICACY: Stage 2.

PMID:38490816 | DOI:10.1002/jmri.29357

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Inhaled Nitroglycerin for Pulmonary Edema in Air Medical Services: A Retrospective Pilot Study

Air Med J. 2024 Mar-Apr;43(2):151-156. doi: 10.1016/j.amj.2023.11.009. Epub 2023 Dec 19.

ABSTRACT

OBJECTIVE: The use of traditional inhaled pulmonary vasodilators, such as nitric oxide, to treat symptomatic pulmonary edema is not practical in the air medical or prehospital environment because of difficulty with administration. A hospital-based critical care air medical transport service initiated a pilot study to investigate the use of inhaled nitroglycerin (iNTG) as an alternative pulmonary vasodilator.

METHODS: For this pilot study, iNTG was administered using a jet nebulizer setup and concentrated nitroglycerin, both of which are widely available in acute care settings. In conjunction with medical oversight, transport personnel identified patients with respiratory distress secondary to pulmonary edema. Twenty-two months after initiating the protocol, a retrospective chart review was conducted. Data for patients receiving iNTG were retrospectively abstracted through a medical record search and manual chart review.

RESULTS: Twelve patients received iNTG during the pilot study. Basic demographics, medical comorbidities, concurrent medications, laboratory values, and radiographic studies were collected for each patient. Basic statistics were performed to identify any potential trends.

CONCLUSION: The administration of iNTG is feasible in an air medical transport setting and may provide a useful adjunct to treating patients with pulmonary edema and respiratory distress. Because iNTG delivery targets the pulmonary vasculature, this may be of particular benefit in patients with a poor hemodynamic profile. Larger randomized controlled or cohort studies are needed to specifically analyze and compare hemodynamics, diagnostics, and patient outcomes.

PMID:38490779 | DOI:10.1016/j.amj.2023.11.009

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Can the MIRACLE2 Score Be Used in the Prehospital Environment and Is It Useful? An Observational Study

Air Med J. 2024 Mar-Apr;43(2):146-150. doi: 10.1016/j.amj.2023.11.008. Epub 2023 Nov 30.

ABSTRACT

OBJECTIVE: The MIRACLE2 score has been developed for use in a primary percutaneous coronary intervention center. It is unclear if it is feasible in the helicopter emergency medical service (HEMS) setting.

METHODS: The computerized system at 1 UK HEMS was interrogated between December 1, 2020, and May 1, 2022, for the components of the MIRACLE2 score (recorded contemporaneously) plus demographics and outcomes in all post-return of spontaneous circulation patients conveyed to the hospital. pH was excluded because of no point-of-care testing resulting in a modified MIRACLE2 score (maximum score of 9). Data were analyzed using the chi-square test; P < .05 was statistically significant.

RESULTS: Three hundred thirty patients (240 males) with out-of-hospital cardiac arrests were reviewed. Ninety-two adult patients with nontraumatic out-of-hospital cardiac arrests had sustained return of spontaneous circulation and a median MIRACLE2 score of 4 (range, 0-7). Forty-seven patients died before hospital discharge; the median MIRACLE2 score was higher in those who died (4) than those who survived (1.5, P < .01); 90.3% of those with a score ≥ 5 were triaged to an emergency department rather than directly to a catheterization laboratory.

CONCLUSION: A modified MIRACLE2 score can be calculated in the HEMS setting. The benefit of point-of-care testing pH requires investigation. There may be a benefit in predicting outcomes in this nondifferentiated group, but additional research is required.

PMID:38490778 | DOI:10.1016/j.amj.2023.11.008

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Nevin Manimala Statistics

Heterogeneity of outcome measures in depression trials and the relevance of the content of outcome measures to patients: a systematic review

Lancet Psychiatry. 2024 Apr;11(4):285-294. doi: 10.1016/S2215-0366(23)00438-8.

ABSTRACT

Research waste occurs when randomised controlled trial (RCT) outcomes are heterogeneous or overlook domains that matter to patients (eg, relating to symptoms or functions). In this systematic review, we reviewed the outcome measures used in 450 RCTs of adult unipolar and bipolar depression registered between 2018 and 2022 and identified 388 different measures. 40% of the RCTs used the same measure (Hamilton Depression Rating Scale [HAMD]). Patients and clinicians matched each item within the 25 most frequently used measures with 80 previously identified domains of depression that matter to patients. Seven (9%) domains were not covered by the 25 most frequently used outcome measures (eg, mental pain and irritability). The HAMD covered a maximum of 47 (59%) of the 80 domains that matter to patients. An interim solution to facilitate evidence synthesis before a core outcome set is developed would be to use the most common measures and choose complementary scales to optimise domain coverage. TRANSLATIONS: For the French and Dutch translations of the abstract see Supplementary Materials section.

PMID:38490761 | DOI:10.1016/S2215-0366(23)00438-8

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Characteristics and phenotypes of a COPD cohort from referral hospital clinics in Uganda

BMJ Open Respir Res. 2024 Mar 15;11(1):e001816. doi: 10.1136/bmjresp-2023-001816.

ABSTRACT

INTRODUCTION: Chronic obstructive pulmonary disease (COPD) is a heterogeneous condition with varied clinical and pathophysiological characteristics. Although there is increasing evidence that COPD in low-income and middle-income countries may have different clinical characteristics from that in high-income countries, little is known about COPD phenotypes in these settings. We describe the clinical characteristics and risk factor profile of a COPD population in Uganda.

METHODS: We cross sectionally analysed the baseline clinical characteristics of 323 patients with COPD aged 30 years and above who were attending 2 national referral outpatient facilities in Kampala, Uganda between July 2019 and March 2021. Logistic regression was used to determine factors associated with spirometric disease severity.

RESULTS: The median age was 62 years; 51.1% females; 93.5% scored COPD Assessment Test >10; 63.8% modified medical research council (mMRC) >2; 71.8% had wheezing; 16.7% HIV positive; 20.4% had a history of pulmonary tuberculosis (TB); 50% with blood eosinophilic count >3%, 51.7% had 3 or more exacerbations in the past year. Greater severity by Global initiative for Chronic Obstructive Lung Disease (GOLD) stage was inversely related to age (aOR=0.95, 95% CI 0.92 to 0.97), and obesity compared with underweight (aOR=0.25, 95% CI 0.07 to 0.82). Regarding clinical factors, more severe airflow obstruction was associated with SPO2 <93% (aOR=3.79, 95% CI 2.05 to 7.00), mMRC ≥2 (aOR=2.21, 95% CI 1.08 to 4.53), and a history of severe exacerbations (aOR=2.64, 95% CI 1.32 to 5.26).

CONCLUSION: Patients with COPD in this population had specific characteristics and risk factor profiles including HIV and TB meriting tailored preventative approaches. Further studies are needed to better understand the pathophysiological mechanisms at play and the therapeutic implications of these findings.

PMID:38490695 | DOI:10.1136/bmjresp-2023-001816

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Global relevance of MGRS growth standards: the case of India

BMJ Paediatr Open. 2024 Mar 15;8(1):e002472. doi: 10.1136/bmjpo-2023-002472.

ABSTRACT

The most common measures of childhood undernutrition are based on anthropometric measures such as height-for-age (stunting/chronic undernutrition) and weight-for-height (wasting/acute undernutrition). It is well recognised that the determinants of undernutrition are multiple, including food intake, dietary diversity, health, sanitation and women’s status. Currently, most countries across the world including India use the globally accepted WHO-Multicentre Growth Reference Study (MGRS) growth standards (2006) for the purposes of measurement as well as for evaluating progress on these metrics. However, there is some discussion on the universal relevance of these standards, and in the Indian context, whether these standards overestimate the prevalence of stunting, considering differences in genetic potential for growth. This is especially relevant in the context of increasing burden of obesity and non-communicable diseases in India. Based on a detailed review of literature, policy documents and expert inputs, this review paper discusses the relevance of the WHO growth standards for height/stunting, in the context of India. Issues discussed related to the MGRS methodology include pooling of data and intersite and intrasite variability, opting for standards as opposed to references, and external validity. Other issues related to plasticity of stunting and the influence of maternal heights are also discussed, in the context of analysing the appropriateness of using universal growth standards. Based on the review, it is recommended that the current standards may continue to be used until a newer global standard is established through a similar study.

PMID:38490693 | DOI:10.1136/bmjpo-2023-002472

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Psychological burden associated with incident persistent symptoms and their evolution during the COVID-19 pandemic: a prospective population-based study

BMJ Ment Health. 2024 Mar 15;27(1):e300907. doi: 10.1136/bmjment-2023-300907.

ABSTRACT

BACKGROUND: Identifying factors that predict the course of persistent symptoms that occurred during the COVID-19 pandemic is a public health issue. Modifiable factors could be targeted in therapeutic interventions.

OBJECTIVE: This prospective study based on the population-based CONSTANCES cohort examined whether the psychological burden associated with incident persistent symptoms (ie, that first occurred from March 2020) would predict having ≥1 persistent symptom 6-10 months later.

METHODS: A total of 8424 participants (mean age=54.6 years (SD=12.6), 57.2% women) having ≥1 incident persistent symptom at baseline (ie, between December 2020 and February 2021) were included. The psychological burden associated with these persistent symptoms was assessed with the Somatic Symptom Disorder-B Criteria Scale (SSD-12). The outcome was having ≥1 persistent symptom at follow-up. Adjusted binary logistic regression models examined the association between the SSD-12 score and the outcome.

FINDINGS: At follow-up, 1124 participants (13.3%) still had ≥1 persistent symptom. The SSD-12 score at baseline was associated with persistent symptoms at follow-up in both participants with (OR (95% CI) for one IQR increase: 1.42 (1.09 to 1.84)) and without SARS-CoV-2 infection prior to baseline (1.39 (1.25 to 1.55)). Female gender, older age, poorer self-rated health and infection prior to baseline were also associated with persistent symptoms at follow-up.

CONCLUSIONS: The psychological burden associated with persistent symptoms at baseline predicted the presence of ≥1 persistent symptom at follow-up regardless of infection prior to baseline.

CLINICAL IMPLICATIONS: Intervention studies should test whether reducing the psychological burden associated with persistent symptoms could improve the course of these symptoms.

PMID:38490690 | DOI:10.1136/bmjment-2023-300907

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Scoping review of smoking cessation interventions in pregnant women attending primary care

BJGP Open. 2024 Mar 15:BJGPO.2023.0185. doi: 10.3399/BJGPO.2023.0185. Online ahead of print.

ABSTRACT

BACKGROUND: Smoking during pregnancy has many adverse effects for infant and mother. Despite this, many pregnant women continue smoking. Primary care is a suitable area to provide smoking cessation interventions.

AIM: To investigate available literature regarding effectiveness of smoking cessation interventions for pregnant women in primary care, the factors contributing to this effectiveness and to provide suggestions for future research.

DESIGN & SETTING: Systematic scoping literature review.

METHOD: The methodology followed PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) extension for scoping reviews. Five electronic databases were searched. Inclusion criteria included original research studies and studies published in English. Data were extracted using a modified Johanna Briggs Institute data charting tool.

RESULTS: The initial search yielded 878 articles. Following article screening, twelve studies were included. Five studies found a statistically significant increase in smoking cessation rates or reduction in tobacco consumed in the intervention group. The remaining studies showed no significant difference between the groups. However, ten studies showed the control group received usual antenatal care involving smoking cessation promotion. An increase in smoking cessation rates was seen in intervention and control groups, demonstrating the effectiveness of these interventions. Interventions included education, counselling, self-help and financial incentives. They were delivered by general practitioners, midwives, counsellors and pregnancy advisors.

CONCLUSION: Primary care is suitable to offer smoking cessation interventions to pregnant women, as it is often the first point of care and more easily accessible than secondary care. Future research is needed to determine the most effective types of interventions.

PMID:38490678 | DOI:10.3399/BJGPO.2023.0185

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Prevalence and predictors of depression and anxiety in patients with chronic rhinosinusitis: a systematic review and meta-analysis

BMJ Open. 2024 Mar 15;14(3):e079273. doi: 10.1136/bmjopen-2023-079273.

ABSTRACT

BACKGROUND: Chronic rhinosinusitis (CRS) is a persistent inflammation of the sinuses. As a result of long-term discomfort, patients may experience symptoms of common mental disorders such as anxiety and depression. This may affect the quality of life and disease progression. However, there is still uncertainty about the extent of the problem.

OBJECTIVE: This meta-analysis aimed to determine the prevalence of depression and anxiety symptoms in patients with CRS.

SEARCH STRATEGY: We searched PubMed, Embase, Web of Science, Cochrane Library, and CBM databases for relevant studies published before 15 July 2022 in patients with CRS with concomitant depression and anxiety symptoms.

DATA COLLECTION AND ANALYSIS: Two authors independently performed screening and quality assessment using validated tools. Extraction of data using predefined standardised data collection spreadsheets. Heterogeneity and inconsistency were checked using the I² statistic.

RESULTS: The meta-analysis included 32 articles involving 56 933 patients. The prevalence of depression and anxiety symptoms was estimated at 24.7% (95% CI, 21.3% to 28. 1%) and 29.7% (95% CI, 19.3% to 40.2%). Subgroup analysis revealed the following: (1) CRS without nasal polyps (CRSsNP): 26.2% (95% CI, 21.9% to 30.5%), CRS with nasal polyps(CRSwNP): 20% (95% CI, 15.9% to 24%); (2) Female patients: 36. 1% (95% CI, 25.3% to 46.9%), male patients: 24.3% (95% CI, 12. 1% to 36.6%); and (3) The average age≤50 years patients: 29.8% (95% CI, 21.3% to 38.2%), the average age>50 years patients: 22. 1% (95% CI, 17.1% to 27%).

CONCLUSION: A significant proportion of people with CRS have symptoms of depression and anxiety, and early screening for depression and anxiety in people with CRS is critical. And, more attention needs to be given to females and patients with CRSsNP during screening.

PROSPERO REGISTRATION NUMBER: CRD42022345959).

PMID:38490652 | DOI:10.1136/bmjopen-2023-079273