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Tag: Clinical Treatments & Procedures

  • Low-dose aspirin is recommended for preventing preeclampsia in pregnancy

    What the study found

    The abstract states that low-dose aspirin is recommended in pregnancy for preventing preeclampsia, a hypertensive disorder of pregnancy. It also reports evidence of reduced maternal and perinatal morbidity, especially when aspirin is started before 16 weeks.

    Why the authors say this matters

    The authors say this matters because hypertensive disorders of pregnancy are major causes of maternal and perinatal illness and death globally. They conclude that low-dose aspirin has a role in improving pregnancy outcomes in high-risk pregnancies.

    What the researchers tested

    The article is a research review of aspirin history and its clinical applications in pregnancy. It summarizes low-dose aspirin use, guideline support, and reported pregnancy outcomes in conditions such as preeclampsia, intrauterine growth restriction (IUGR), antiphospholipid syndrome (APS), and systemic lupus erythematosus (SLE).

    What worked and what didn't

    The abstract reports that low-dose aspirin is associated with lower maternal and perinatal morbidity, particularly when started before 16 weeks. It also notes lower preterm birth rates, improved fetal growth in selected cases of IUGR, and better outcomes in women with APS and SLE when used alone or with heparin.

    What to keep in mind

    The abstract does not provide detailed study design, sample sizes, or specific outcome estimates. It also does not describe limitations beyond noting that the benefits apply to selected cases and high-risk pregnancies.

    • Low-dose aspirin is recommended for preventing preeclampsia in pregnancy.
    • The abstract says benefits are strongest when aspirin is started before 16 weeks.
    • Reported benefits include reduced maternal and perinatal morbidity and lower preterm birth rates.
    • Improved fetal growth is noted in selected cases of intrauterine growth restriction.
    • Major guidelines from ACOG, NICE, RCOG, WHO, and FIGO support low-dose aspirin in high-risk pregnancies.

  • Air pollution exposure was linked to higher preeclampsia risk

    What the study found

    The study found that exposure to some ambient air pollutants, especially fine particulate matter (PM2.5, tiny airborne particles smaller than 2.5 micrometers), was associated with a higher risk of preeclampsia. Mixed-pollutant exposure was also associated with higher risk.

    Why the authors say this matters

    The authors conclude that the findings warrant further investigation into mechanisms and targeted prevention. The study suggests that identifying pollutant-specific windows of susceptibility may help clarify when exposure is most relevant.

    What the researchers tested

    The researchers analyzed 18,045 deliveries from a hospital in Tangshan, China, in a retrospective cohort study. They examined exposure to PM10, PM2.5, SO2, NO2, CO, and O3 from 12 weeks before conception to 26 weeks of gestation, using logistic regression, restricted cubic spline analysis, distributed lag non-linear models, and quantile g-computation for the pollutant mixture.

    What worked and what didn't

    Adjusted analyses found that each 10 µg/m3 increase in PM10 and PM2.5 was positively associated with preeclampsia risk, while CO showed a modest inverse association. PM10, PM2.5, and CO showed linear exposure-response patterns, whereas SO2 and NO2 showed nonlinear patterns. The study also identified susceptible windows for PM10, PM2.5, SO2, NO2, and O3, and found that each quartile increase in multi-pollutant exposure was associated with a 26% higher risk of preeclampsia, with SO2 contributing the largest weight.

    What to keep in mind

    This was a retrospective study from a single hospital in Tangshan, China, so the findings describe that setting and cannot be assumed to apply everywhere. The abstract does not describe additional limitations beyond the need for further investigation.

    • PM10 and PM2.5 were positively associated with preeclampsia risk.
    • CO showed a modest inverse association with preeclampsia in adjusted analyses.
    • SO2 and NO2 showed nonlinear exposure-response patterns.
    • Mixed-pollutant exposure was associated with a 26% higher risk of preeclampsia.
    • ART pregnancies showed stronger associations for PM2.5 and O3 at certain gestational windows.

  • Long COVID stressors and coping strategies vary widely

    What the study found

    The study found that people with Long COVID experience a wide range of persistent physical and mental complaints, along with social and practical stressors. The authors report that coping usually involved a mix of emotion-oriented and problem-oriented strategies.

    Why the authors say this matters

    The authors conclude that emotional support, described as a key resource in coping with this disease, should be strengthened. They also say the findings underline the importance of tailored support to help affected people manage symptoms, improve quality of life, and participate in social life again.

    What the researchers tested

    This qualitative interview study was part of a pilot multicenter study on psychosocial needs in people with Long COVID. The researchers analyzed semi-structured interviews from 40 affected participants using the Transactional Stress Model by Lazarus and Folkman and the Brief COPE by Carver.

    What worked and what didn't

    Frequently reported stressors included fatigue-related complaints, cognitive impairments, fears and worries, job insecurity, financial worries, lack of recognition, stigmatization, lack of treatment and therapy approaches, withdrawal, and social isolation. Reported coping strategies included emotional support, self-care, positive thinking, planning/pacing, self-help, withdrawal, and avoidance; the study says emotional support was the most frequently mentioned strategy. The analysis also found that complaints and coping attempts varied significantly among participants.

    What to keep in mind

    The abstract does not describe detailed study limitations. It also presents findings from a qualitative sample of 40 participants, so the results are based on the experiences reported in this group.

    • Participants reported persistent physical and mental complaints, especially fatigue, cognitive problems, fears, and worries.
    • Common stressors included job insecurity, financial concerns, stigmatization, lack of recognition, and limited treatment options.
    • Coping combined emotion-oriented strategies and problem-oriented strategies.
    • Emotional support was the most frequently mentioned coping strategy.
    • The authors say support should be tailored to individual needs.

  • Android app matched manual facial index measurements

    What the study found

    The study found no significant difference between facial index measurements from the Android app and those taken manually. The authors also report very high agreement between examiners using the measurement method.

    Why the authors say this matters

    The authors conclude that the app could make facial index measurement easier by allowing quick and reliable use of a smartphone without equipment like calipers or manual calculations. They note that facial index measurement is used in orthodontic diagnosis and can also be relevant in anthropology and forensic medicine.

    What the researchers tested

    The researchers developed a photographic app for Android operating systems to classify faces into Banister facial types. They compared facial index measurements from the app with manual measurements in a sample of randomly selected Indian subjects, used an independent t-test for the comparison, assessed inter-examiner reliability with three investigators using Cronbach’s alpha, and used a chi-square test to compare Prosopic index classifications by method.

    What worked and what didn't

    The app-based and manual facial index values did not differ significantly. Cronbach’s alpha was 0.998, which the authors describe as the best agreement between examiners. The largest share of subjects was classified as having a hyperleptoprosopic facial phenotype in both methods.

    What to keep in mind

    The abstract does not describe detailed limitations. The summary also does not provide the sample size, the app’s measurement steps, or whether the findings apply beyond the studied Indian sample.

    • The Android app and manual facial index measurements showed no significant difference.
    • Inter-examiner reliability was very high, with Cronbach’s alpha reported as 0.998.
    • The most common facial phenotype in both methods was hyperleptoprosopic.
    • The authors say the app can measure facial index quickly on a smartphone without calipers or calculations.
    • The study compared app-based and manual measurements in randomly selected Indian subjects.

  • Conventional drilling showed the least crestal bone loss

    What the study found

    The study found that implant site preparation technique was associated with differences in crestal bone loss around dental implants. Conventional drilling had the least bone loss, bone expansion had more, and ridge split had the most over the 12-month follow-up.

    Why the authors say this matters

    The authors conclude that implant site preparation techniques significantly influence peri-implant crestal bone remodeling, which is the change in bone around an implant after placement. They suggest that the choice of technique may affect how much bone loss occurs during follow-up.

    What the researchers tested

    This prospective clinical comparative study included 72 implant sites in patients aged 25-55 years who needed implant-supported rehabilitation. The sites were divided into three groups: conventional drilling, bone expansion, and ridge split, with 24 implants in each group. Crestal bone levels were measured with cone-beam computed tomography immediately after placement and at 3, 6, and 12 months.

    What worked and what didn't

    Crestal bone loss increased over time in all three groups. Intergroup comparisons showed statistically significant differences in mesial and distal bone loss at 3, 6, and 12 months, with ridge split highest, bone expansion intermediate, and conventional drilling lowest at every time point. Within each group, bone loss increased significantly over time, except between 6 and 12 months in the conventional drilling group, which was not statistically significant.

    What to keep in mind

    The abstract does not describe limitations beyond the study's sample size and follow-up period. The findings apply to the 72 implant sites studied and to the specific techniques and time points measured.

    • Conventional drilling was associated with the least crestal bone loss.
    • Ridge split was associated with the greatest crestal bone loss.
    • Bone expansion showed bone loss between the other two techniques.
    • Bone loss increased over time in all groups.
    • The 6- to 12-month change in the conventional drilling group was not statistically significant.

  • Pregnancy-related coronary microvascular dysfunction remains poorly understood

    What the study found

    The article finds that coronary microvascular dysfunction, a condition involving problems in the heart's small blood vessels, is increasingly recognized as important in cardiovascular health, especially among women. It also states that its diagnosis and management during pregnancy remain poorly understood.

    Why the authors say this matters

    The authors conclude that better attention to coronary microvascular dysfunction in pregnancy is needed because the condition may occur with hypertensive disorders of pregnancy or worsen existing endothelial dysfunction, which is damage or abnormal function of the blood vessel lining. They also say that addressing current knowledge gaps is important for improving outcomes in this vulnerable population.

    What the researchers tested

    This is a review article that examines current evidence on coronary microvascular dysfunction in pregnancy. The authors also outline limitations in present diagnostic and treatment approaches and identify research gaps.

    What worked and what didn't

    The article reports that current evidence suggests coronary microvascular dysfunction may arise newly during hypertensive disorders of pregnancy or may reflect worsening of pre-existing endothelial dysfunction. It also states that current diagnostic and treatment approaches have important limitations.

    What to keep in mind

    The abstract does not describe new patient data, specific diagnostic tests, or treatment outcomes. It also does not provide detailed results or quantify how often coronary microvascular dysfunction occurs in pregnancy.

    • Coronary microvascular dysfunction is increasingly recognized as important, especially among women.
    • Its diagnosis and management during pregnancy remain poorly understood.
    • The condition may arise during hypertensive disorders of pregnancy or worsen existing endothelial dysfunction.
    • The authors highlight limitations in current diagnostic and treatment approaches.
    • The article emphasizes research gaps that need to be addressed to improve outcomes.

  • High donor TNFα is linked to poorer kidney graft outcomes

    What the study found

    Higher levels of circulating TNFα, a signaling protein involved in inflammation, in deceased donors were associated with worse kidney graft function and lower graft survival after transplantation. The association was seen after brain death donation but not after circulatory death donation.

    Why the authors say this matters

    The authors conclude that monitoring plasma inflammation during donor management may provide a window to assess and intervene to improve optimization and quality of deceased donor organs. They suggest this could help identify donor kidney injury before transplantation.

    What the researchers tested

    The researchers measured TNFα and its receptors TNFR1 and TNFR2 in 1,018 longitudinal plasma samples collected during donor management from 596 deceased and 34 living donors across multiple centers in the U.K. They also compared plasma findings with paired kidney biopsy samples and tested effects in vitro using human podocytes, specialized kidney cells.

    What worked and what didn't

    High donor plasma TNFα levels were associated with inferior graft function at 12 months and up to 60 months, and with reduced graft survival up to 96 months. These associations were replicated in a validation cohort and remained after adjustment for donor and recipient covariates; they were found in donations after brain death, but not in donations after circulatory death. In paired samples, higher plasma TNFα correlated with increased expression of kidney injury markers, and in vitro exposure of human podocytes to TNFα donor plasma produced TNFR1 signaling-driven injury profiles that were reduced by infliximab.

    What to keep in mind

    The abstract does not describe detailed study limitations beyond the observed differences between donation after brain death and donation after circulatory death. The findings are based on donor plasma measurements, paired biopsy analysis, and cell experiments, so the summary provided here is limited to those reported data.

    • Higher donor TNFα was associated with worse kidney graft function and survival after transplantation.
    • The association was reported for donations after brain death, but not after circulatory death.
    • The findings were replicated in a validation cohort and held after covariate adjustment.
    • Higher TNFα correlated with increased kidney injury markers in paired donor biopsy samples.
    • In vitro, TNFα donor plasma triggered TNFR1 signaling-driven injury profiles in human podocytes, and infliximab reduced that response.

  • Donor age affects younger liver transplant recipients more

    What the study found

    The study found that donor age has a stronger negative association with liver transplant outcomes in younger recipients than in older ones. Older recipients appeared to tolerate older donor livers with less impact on survival.

    Why the authors say this matters

    The authors conclude that these findings support more age-conscious organ allocation strategies and provide thresholds that may help guide donor-recipient matching in liver transplantation. They present donor-recipient age matching as relevant because donor and recipient populations are aging.

    What the researchers tested

    The researchers analyzed adult and pediatric liver transplant recipients in the U.S. from 2011 to 2021. They examined donor and recipient characteristics, time trends, and allocation patterns, and used multivariable Cox models to assess donor age across recipient age groups for patient survival, graft survival, and death-censored graft survival.

    What worked and what didn't

    The cohort included 57,142 liver transplant recipients, with a median age of 57 years, and donors with a mean age of 41.1 years. From 2011 to 2021, mean donor and recipient age increased modestly but significantly, and five-year patient and graft survival declined as donor age increased, especially among younger recipients. Donor age over 45 years was linked to higher mortality and graft failure in recipients 35 years old or younger, while outcomes in recipients 65 years old or older were largely unaffected; death-censored analyses showed similar trends, and the donor-recipient age interaction was statistically significant across all outcomes.

    What to keep in mind

    The summary does not describe limitations in detail beyond the study being based on U.S. transplant data from 2011 to 2021. The findings are reported as associations from modeled analyses rather than as a direct test of changing allocation policy.

    • The study found a significant donor-recipient age interaction for all measured outcomes.
    • Donor age over 45 years was associated with worse survival and graft outcomes in recipients 35 years old or younger.
    • Recipients 65 years old or older were largely unaffected by donor age.
    • Five-year patient and graft survival declined as donor age increased, especially in younger recipients.
    • Mean donor and recipient age both increased modestly but significantly from 2011 to 2021.

  • TCD with EEG or SLSEP improved brain death determination accuracy

    What the study found

    The study found that transcranial Doppler, or TCD, combined with electroencephalography (EEG) or short-latency somatosensory evoked potential (SLSEP) performed better than TCD alone for brain death determination when there were flaws in the clinical assessment. The combined tests showed higher area under the receiver operating characteristic curve values and a false-positive rate of 0 in the comparisons described.

    Why the authors say this matters

    The authors conclude that if there are flaws in clinical brain death determination, using TCD together with EEG or SLSEP can improve the accuracy of brain death determination. This suggests the combined approach may be useful as a confirmation test technique in those situations.

    What the researchers tested

    The researchers compared three confirmation test techniques under the Chinese criteria for brain death determination. They divided patients in three ways: brain death versus non-brain-death groups, brain death without flaws versus brain death with flaws, and groups based on different brain injury sites.

    What worked and what didn't

    In the first comparison, TCD combined with EEG or SLSEP had AUC values of 0.997 and 0.995, with a false-positive rate of 0, and performed better than TCD alone. In the second comparison, the combined tests reached AUC values of 0.990 to 1.000 with a false-positive rate reduced to 0, and in the third comparison they reached 1.000 in the brain-death-without-flaws group and 0.985 to 1.000 in the brain-death-with-flaws group, again with a false-positive rate of 0.

    What to keep in mind

    The abstract does not provide sample size, detailed patient characteristics, or the full design of the confirmation tests beyond the comparison structure described. The summary also does not describe any limitations beyond the statement that the results apply when clinical brain death determination has flaws.

    • TCD combined with EEG or SLSEP outperformed TCD alone in the comparisons reported.
    • The combined approaches had false-positive rates of 0 in all three comparison analyses.
    • AUC values for the combined tests ranged from 0.985 to 1.000 across the reported groups.
    • The study focused on confirmation test selection when clinical brain death determination had flaws.
    • The analyses followed Chinese criteria for brain death determination.

  • First permanent molar caries are common across four world regions

    What the study found

    The review found a pooled prevalence of dental caries, or tooth decay, in the first permanent molars of 0.33 across studies from Asia, Europe, Africa, and Latin America. Prevalence was reported as higher in adolescents than in children.

    Why the authors say this matters

    The authors conclude that the relatively high prevalence underscores the need for sustained clinical and public health focus. They also note that the findings cannot be generalized to North America or Oceania because no data from those regions were available.

    What the researchers tested

    The researchers conducted a systematic review and meta-analysis of studies on dental caries in first permanent molars among people aged 6 to 18 years. They searched PubMed, Web of Science, Embase, Scopus, the Cochrane Library, Wanfang, and CNKI for studies published before 3 January 2026, then used R software to pool prevalence estimates and examine heterogeneity and publication bias.

    What worked and what didn't

    Across 66 studies with 768,263 eligible subjects, the pooled prevalence was 0.33 (95% CI: 0.28, 0.38). By region, the reported prevalences were 0.30 in Asia, 0.53 in Africa, 0.51 in Europe, and 0.48 in Latin America; by age group, they were 0.31 in children and 0.45 in adolescents.

    What to keep in mind

    The abstract reports statistically significant subgroup differences by World Bank region, sample size, publication year, sex, and disease diagnosis, but it does not provide the detailed causes of those differences. The available summary also does not describe additional limitations beyond the lack of data from North America and Oceania.

    • The pooled prevalence of caries in first permanent molars was 0.33 across the included studies.
    • Reported prevalence was higher in adolescents (0.45) than in children (0.31).
    • Regional prevalence estimates ranged from 0.30 in Asia to 0.53 in Africa.
    • The review included 66 studies and 768,263 participants aged 6 to 18 years.
    • The authors say the findings are not generalizable to North America or Oceania because no data were available.