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Reassessment of the effect of oral l-arginine on blood pressure: A systematic review and meta-analysis based on ambulatory blood pressure monitoring.

OBJECTIVE: This meta-analysis aimed to evaluate the effect of oral l-arginine supplementation on ambulatory blood pressure (ABP). METHODS: A systematic search of PubMed, Cochrane Library, Embase, and Web of Science databases was conducted from their inception through March 1, 2026. Randomized controlled trials (RCTs) assessing the effects of oral l-arginine intervention were included. Outcome measures included 24-h systolic blood pressure (24h SBP), 24-h diastolic blood pressure (24h DBP), daytime systolic blood pressure (dSBP), daytime diastolic blood pressure (dDBP), nighttime systolic blood pressure (nSBP), and nighttime diastolic blood pressure (nDBP). Meta-analysis was performed using Stata 17.0. The weighted mean difference (WMD) was used as the effect size, and the results were pooled with 95% confidence intervals (CIs). RESULTS: A total of 5 RCTs comprising 202 participants were included. Meta-analysis results demonstrated that oral l-arginine significantly reduced 24h SBP (WMD&#x202f;=&#x202f;-4.23&#x202f;mmHg, 95% CI [-5.87, -2.58]; P&#x202f;<&#x202f;0.01) and 24h DBP (WMD&#x202f;=&#x202f;-3.04&#x202f;mmHg, 95% CI [-4.48, -1.59]; P&#x202f;<&#x202f;0.01). Significant reductions were also observed for dSBP (WMD&#x202f;=&#x202f;-4.16&#x202f;mmHg, 95% CI [-5.90, -2.41]; P&#x202f;<&#x202f;0.01) and dDBP (WMD&#x202f;=&#x202f;-4.25&#x202f;mmHg, 95% CI [-5.85, -2.66]; P&#x202f;<&#x202f;0.01). Furthermore, oral l-arginine significantly lowered nSBP (WMD&#x202f;=&#x202f;-5.70&#x202f;mmHg, 95% CI [-7.81, -3.58]; P&#x202f;<&#x202f;0.01) and nDBP (WMD&#x202f;=&#x202f;-4.18&#x202f;mmHg, 95% CI [-6.27, -2.09]; P&#x202f;<&#x202f;0.01). CONCLUSION: Oral l-arginine supplementation significantly reduces ABP. However, the number of included studies was limited, and further validation through additional relevant research is warranted.

Arginine

Association Between 24-Hour Blood Pressure and Rates of Retinal Nerve Fiber Layer Progression in Glaucoma: The Vascular Imaging in Glaucoma Study.

PURPOSE: Low systemic blood pressure (BP) has been implicated as a risk factor for glaucoma progression. The purpose of this study was to investigate the association between 24-hour BP and rates of retinal nerve fiber layer (RNFL) loss in eyes with primary open-angle glaucoma. DESIGN: Prospective cohort study. PARTICIPANTS: Seventy-nine eyes from 42 subjects with glaucoma (mean age, 68.5 &#xb1; 7.6 years) enrolled in the Vascular Imaging in Glaucoma Study at the Bascom Palmer Eye Institute. METHODS: Participants underwent 24-hour ambulatory BP monitoring at baseline. Follow-up evaluations were conducted at 4-month intervals and included ophthalmic examination, BP measurement, and peripapillary RNFL thickness measurement with spectral-domain optical coherence tomography. The association between BP and RNFL loss over time was assessed using linear mixed-effects models adjusted for age, sex, race, baseline RNFL thickness, central corneal thickness, and intraocular pressure. MAIN OUTCOME MEASURES: The effect of baseline 24-hour mean arterial pressure (MAP), systolic BP (SBP), and diastolic BP (DBP) on the rate of average RNFL loss over time. RESULTS: Eyes underwent an average of 13 &#xb1; 3 optical coherence tomography exams over 43 &#xb1; 10 months of follow-up. The mean rate of RNFL loss was -0.34 &#xb1; 0.64 &#xb5;m/y (median: -0.32; interquartile range: -0.66 to -0.04 &#xb5;m/y). After adjusting for confounding factors, every 10 mm Hg lower in 24-hour minimum MAP, SBP, and DBP was associated with -0.542 &#xb5;m/y (P < .001), -0.360 &#xb5;m/y (P = .003), and -0.458 &#xb5;m/y (P = .008) faster RNFL loss, respectively. Eyes in the lowest quartile of average 24-hour MAP (81-90 mm Hg) and minimum 24-hour DBP (35-47 mm Hg) experienced significantly faster progression compared to those in the highest quartile, with differences of -0.68 &#xb5;m/y (P = .017) and -0.63 &#xb5;m/y (P = .030), respectively. CONCLUSIONS: Lower systemic BP, especially minimum MAP, SBP, and DBP measured by 24-hour ambulatory BP monitoring, is associated with faster rates of RNFL loss in primary open-angle glaucoma eyes. 24-hour BP monitoring may help predict glaucoma patients at greater risk of progression.

Humans

HYPNOSA: Study protocol for a prospective observational cohort of patients with obstructive sleep apnea.

BACKGROUND: Obstructive Sleep Apnea (OSA) is a common chronic disease that affects more than 20% of the adult population. One of the most frequent and characteristic symptoms of OSA is excessive daytime sleepiness (EDS). This symptom is typically treated in patients with OSA with the application of continuous positive airway pressure (CPAP), the gold-standard treatment for this disease. In some patients who are adequately treated with CPAP, residual excessive daytime sleepiness (REDS) persists. The prevalence, associations, and outcomes associated with REDS remain poorly understood. METHODS: Multicenter, prospective, observational cohort study including 1000 patients. Participants will undergo a sleep study for the diagnosis of obstructive sleep apnea (OSA), 24-h ambulatory blood pressure monitoring, clinical assessment, quality-of-life questionnaires, Epworth Sleepiness Scale, and collection of biochemical variables and biological samples. Patients with OSA will receive standard care, and those prescribed continuous positive airway pressure (CPAP) will be monitored for treatment adherence. OSA patients will be assessed at baseline and at 6, 12, and 24 months. DISSCUSION: We aim to establish a prospective observational cohort of patients with obstructive sleep apnea (OSA) treated with CPAP, with and without REDS. The HYPNOSA project will create the largest available registry of patients with OSA and REDS using real-world data, providing accurate prevalence estimates and long-term outcomes. Biological samples will be analyzed to assess the role of specific biomarkers. TRIAL REGISTRATION: Registered at ClinicalTrials.gov. Identifer: NCT06514482.

Adult

Treatment of OSA using mandibular advancement versus CPAP in improving cardiovascular health.

BACKGROUND: Obstructive sleep apnea is a significant risk factor for hypertension. We assessed the relative effectiveness of mandibular advancement device (MAD) versus continuous positive airway pressure (CPAP) in reducing 24 h ambulatory blood pressure (BP) and other health-related outcomes over 12 months. METHODS: In a randomized, non-inferiority trial, 321 participants with hypertension and increased cardiovascular risk were recruited for polysomnography. Of these, 220 with moderate-to-severe OSA (apnea-hypopnea index (AHI) &#x2265;15 events/hour) were randomized to MAD or CPAP (1:1). We report the final outcomes at the 12-month follow-up. RESULTS: A total of 180 participants (MAD: 89; CPAP: 91) completed the 12-month follow-up. Median usage for MAD and CPAP was 5.5 and 4.9 h per night, respectively. Compared to baseline, the 24 h mean arterial BP at 12 months decreased by 2.3 mmHg (P = 0.200) in the MAD group and by 1.0 mmHg (P = 0.999) in the CPAP group. The difference between-groups was -0.6 mmHg (95% confidence interval: -2.53 to 1.39, non-inferiority P < 0.019). The MAD group demonstrated a larger reduction in asleep BP compared to the CPAP group. The prevalence of excessive daytime sleepiness in the MAD group decreased from 30.3% at baseline to 10.1% at 12-month follow-up (P = 0.001), and from 38.5% to 7.7% in the CPAP group (P < 0.001). The between-group difference was 10.6% (P = 0.097). No significant within-group or between-group differences were observed in the prevalence of arrhythmias and plasma levels of cardiac biomarkers. CONCLUSION: At 12-month, MAD is non-inferior to CPAP for reducing 24 h mean arterial BP in participants with hypertension and increased cardiovascular risk. TRIAL REGISTRATION: NCT04119999.

Humans

Telmisartan-based monotherapy and combination regimens for blood pressure control in adults with hypertension: a systematic review, meta-analysis, and GRADE assessment.

PURPOSE: To evaluate the efficacy, safety, and certainty of evidence for telmisartan-based antihypertensive regimens in adults with hypertension. METHODS: This systematic review and meta-analysis followed PRISMA 2020. PubMed/MEDLINE, Scopus, Web of Science, and Cochrane CENTRAL were searched from inception to 2026. Eligible studies enrolled adults with hypertension and compared telmisartan monotherapy or telmisartan-containing combinations with placebo, usual care, non-telmisartan antihypertensive agents, or alternative telmisartan-based regimens. Continuous outcomes were pooled as mean differences (MDs) and dichotomous outcomes as risk ratios (RRs), both with 95% confidence intervals (CIs), using random-effects models, with additional subgroup analyses conducted by comparator type. Risk of bias was assessed using RoB 2, and certainty of evidence was evaluated using GRADE. RESULTS: Twenty-five included reports (24 unique trials, since two reports present secondary outcomes from the same underlying trial) involving 6,521 participants were included, spanning placebo-controlled, usual-care-controlled, active-comparator, and telmisartan-combination-versus-telmisartan-monotherapy designs. Telmisartan-based therapy significantly reduced office systolic blood pressure (MD&#x2009;-&#x2009;6.39&#xa0;mm Hg; 95% CI&#x2009;-&#x2009;7.86 to&#x2009;-&#x2009;4.93; low certainty) and office diastolic blood pressure (MD&#x2009;-&#x2009;4.88&#xa0;mm Hg; 95% CI&#x2009;-&#x2009;6.67 to&#x2009;-&#x2009;3.09; low certainty), although the magnitude of effect was comparator-dependent. Based on only two trials, 24-h ambulatory systolic blood pressure (MD&#x2009;-&#x2009;7.16&#xa0;mm Hg; 95% CI&#x2009;-&#x2009;10.61 to&#x2009;-&#x2009;3.72) and ambulatory diastolic blood pressure (MD&#x2009;-&#x2009;4.42&#xa0;mm Hg; 95% CI&#x2009;-&#x2009;6.36 to&#x2009;-&#x2009;2.48) were reduced with moderate certainty. Telmisartan-based regimens improved blood pressure response (RR 1.68; 95% CI 1.31 to 2.16; moderate certainty) but not blood pressure control achievement (RR 1.44; 95% CI 0.92 to 2.24; very low certainty). Overall adverse events, dizziness, and headache were comparable (very low to low certainty), while edema was less frequent with telmisartan-based therapy (RR 0.33; 95% CI 0.15 to 0.73; moderate certainty). CONCLUSION: Telmisartan-based regimens, particularly fixed-dose and multidrug combinations, effectively reduce office and ambulatory blood pressure and improve blood pressure response, with broadly comparable short-term safety and less edema. These effect sizes are comparator-dependent, and certainty of evidence for absolute blood pressure control achievement and for major adverse events is very low; heterogeneity, limited long-term data, and a predominance of Asian-population trials warrant cautious interpretation pending larger, higher-quality, and more geographically diverse confirmatory studies.

Humans

Safety and efficacy of distal versus conventional radial artery cannulation for invasive blood pressure monitoring: a systematic review and meta-analysis.

To compare the safety and effectiveness of distal radial artery (DRA) versus conventional radial artery (CRA) catheterization for invasive arterial blood pressure monitoring. This meta-analysis followed PRISMA guidelines. Randomized controlled trials published up to December 30, 2025 were systematically searched in PubMed, Embase, Web of Science, the Cochrane Library, CINAHL, CNKI, Wanfang, VIP, and SinoMed. Two reviewers independently screened studies, extracted data, and assessed risk of bias. Meta-analyses were conducted using Review Manager 5.4 and Stata 18.0, and evidence quality was evaluated with the GRADE system. 12 randomized controlled trials (RCTs) involving 1,790 participants were included. For the primary outcomes, compared with CRA, DRA was associated with lower incidences of haematoma (RR&#x2009;=&#x2009;0.42, 95% CI: 0.24-0.73), catheter blockage (RR&#x2009;=&#x2009;0.33, 95% CI: 0.14-0.81), and bleeding (RR&#x2009;=&#x2009;0.25, 95% CI: 0.11-0.59), but a longer catheter insertion time (MD&#x2009;=&#x2009;26.89, 95% CI: 5.28-48.50). For the secondary outcomes, DRA was associated with a shorter haemostasis time and reduced waveform instability, with no significant differences in first-attempt success rate or pain scores. Subgroup analysis showed a higher first-attempt success rate in patients aged&#x2009;&#x2264;&#x2009;65 years (RR&#x2009;=&#x2009;1.14, 95% CI: 1.02-1.28). DRA catheterization for invasive arterial blood pressure monitoring appears to be associated with fewer complications and more stable arterial waveform acquisition than CRA catheterization, despite a longer insertion time. DRA may represent a feasible alternative in surgical and intensive care settings; however, further high-quality studies are needed to confirm its long-term safety and generalizability.

Humans

Characteristics of post-exercise responders versus non-responders following aerobic or isometric exercise in physically inactive adults of African and South Asian descent with high-normal blood pressure or grade I hypertension.

OBJECTIVE: To investigate interindividual variability in post-exercise hypotension (PEH) and to characterise cardiovascular and autonomic differences between responders and non-responders following aerobic and isometric exercise in adults of African and South Asian descent with elevated blood pressure (BP). METHODS: Physically inactive adults of African and South Asian descent living in Suriname (18-65&#x2009;years) with high-normal BP or grade I hypertension participated in a randomised controlled crossover trial. In this randomised cross-over trial, 47 adults (50.1&#x2009;&#xb1;&#x2009;10.8&#x2009;years; 38% male) with high-normal blood pressure or grade I hypertension completed three conditions: aerobic exercise (30&#x2009;min at 40-60% heart rate reserve), isometric handgrip exercise, and a non-exercise control. Ambulatory BP was assessed over 24&#x2009;h. PEH was defined as the net effect: (post-exercise&#x2009;-&#x2009;pre-exercise) - (post-control&#x2009;-&#x2009;pre-control). Participants were classified as responders if daytime BP decreased &#x2265;5&#x2009;mmHg. Arterial stiffness, cardiac, and autonomic parameters were assessed. RESULTS: Following aerobic exercise, 46% of participants were classified as systolic responders compared with 28% after isometric exercise. No baseline differences were observed in demographic or clinical characteristics between responders and non-responders, suggesting that PEH variability may reflect underlying physiological rather than clinical differences. Aerobic responders demonstrated greater reductions in aortic augmentation index (-19.4% vs. -10.9%, p&#x2009;=&#x2009;0.05), larger increases in stroke volume (+8.1 vs. -5.3&#x2009;mL, p&#x2009;=&#x2009;0.05) and cardiac output (+1.54&#x2009;&#xb1;&#x2009;1.89 vs. +0.58&#x2009;&#xb1;&#x2009;1.60&#x2009;L/min, p&#x2009;=&#x2009;0.009), and more favourable autonomic recovery. Among all variables, only the change in cardiac output was associated with PEH magnitude (r&#x2009;=&#x2009;-0.46, p&#x2009;=&#x2009;0.006). No consistent physiological differences were observed following isometric exercise. CONCLUSION: PEH following aerobic exercise is characterised by a distinct responder phenotype associated with greater reductions in aortic augmentation index and favourable cardiac adaptations. These findings highlight substantial interindividual variability in BP responses and support the need for individualised exercise strategies in hypertension management.

Adolescent

Higher versus Routine Intraoperative Blood Pressure Targets in Noncardiac Surgery: A Systematic Review and Meta-analysis with Trial Sequential Analysis of Randomized Trials.

BACKGROUND: Observational studies consistently link intraoperative hypotension to adverse postoperative outcomes, leading guidelines to recommend maintaining mean arterial pressure 60 to 65 mmHg or greater during noncardiac surgery. Whether targeting higher intraoperative blood pressure values improves clinical outcomes remains uncertain. METHODS: The authors conducted a Preferred Reporting Items for Systematic Reviews and Meta-analyses-guided search on PubMed, Cochrane Central Register of Controlled Trials, Scopus, and Embase from inception to April 2026. Randomized trials comparing higher intraoperative blood pressure targets, either as fixed absolute thresholds or personalized to preoperative baseline, versus routine blood pressure management in adults undergoing elective noncardiac surgery with general anesthesia were included. Outcomes included in-hospital or 30-day mortality, postoperative delirium, acute kidney injury (AKI), 30-day major cardiovascular events, acute myocardial injury, stroke, length of stay, and intraoperative hypotension. RESULTS: Fifteen trials (15,603 patients) were included. Higher targets did not reduce AKI (risk ratio [RR], 0.95; 95% CI, 0.85 to 1.06; P = 0.36; I 2 = 16%) or acute myocardial injury (RR, 1.02; 95% CI, 0.94 to 1.12; P = 0.59; I 2 = 0%) compared with routine targets, with firm evidence from trial sequential analysis. Higher targets were associated with a significant reduction in postoperative delirium (RR, 0.73; 95% CI, 0.54 to 0.98; P = 0.04; I 2 = 26%), although trial sequential analysis indicated the cumulative evidence remained insufficient to draw firm conclusions. No significant effect was observed on in-hospital or 30-day mortality (RR, 1.00; 95% CI, 0.75 to 1.34; P = 1.00; I 2 = 0%); evidence on 30-day major cardiovascular events, stroke, and length of stay was similarly insufficient to draw firm conclusions. CONCLUSION: In adults undergoing elective noncardiac surgery, targeting higher intraoperative blood pressure values does not improve major postoperative outcomes compared with routine management. A potential reduction in postoperative delirium warrants confirmation in adequately powered trials.

Humans

Closed-loop vasopressor systems for hemodynamic control in perioperative and critical care settings: a systematic review and meta-analysis.

Maintaining mean arterial pressure (MAP) within a predefined target is central to haemodynamic management in surgical and critically ill adults receiving vasopressors. Closed-loop vasopressor (CLV) systems automate titration to optimise blood pressure control, but their clinical effectiveness remains uncertain. We performed a systematic review and meta-analysis comparing CLV with manual titration. This PRISMA 2020-compliant review was prospectively registered in PROSPERO (CRD420250655697). MEDLINE, Embase, Scopus, Web of Science, CENTRAL, and the Cochrane Library were searched (January 2000-June 2025). Randomised controlled trials enrolling adults receiving vasopressors in perioperative or intensive care settings were included. Primary outcomes were time within the MAP target range and time spent in hypotension or hypertension. Risk of bias was assessed using RoB 2.0 and certainty of evidence using GRADE. Random- or fixed-effects models were selected according to heterogeneity. Six randomized controlled trials (215 patients) were included in the systematic review, whereas five perioperative trials contributed to the meta-analysis of haemodynamic control outcomes, and one ICU-based study was summarized narratively because it did not report comparable MAP control endpoints. CLV increased time within the MAP target range (mean difference [MD] 33.94%, 95% CI 20.41-47.46; I2&#x2009;=&#x2009;77%) and reduced time in hypotension (MD&#x2009;-&#x2009;18.24%, 95% CI&#x2009;-&#x2009;28.95 to&#x2009;-&#x2009;7.53; I2&#x2009;=&#x2009;73%). There was no significant difference in time in hypertension, cumulative norepinephrine dose, or major/minor adverse events. ICU length of stay was not pooled because of clinical and methodological heterogeneity. Certainty of evidence ranged from low to high (moderate for haemodynamic control outcomes). CLV systems improved haemodynamic control, primarily in perioperative settings,&#xa0;but heterogeneity and small samples limit confidence in effect size and generalisability.&#xa0;Evidence in critically ill populations remains limited, and larger trials are needed to determine whether improvements in these physiological surrogate endpoints translate into meaningful patient-centred outcomes.

Humans

Reliability of resting heart rate measurements in atrial fibrillation.

BACKGROUND: Heart rate (HR) control in atrial fibrillation (AF) is commonly guided by resting HR measurements, usually with 12&#x2011;lead ECG or in-office pulse palpation. OBJECTIVES: We aimed to assess the reliability of resting HR measurements in AF patients with long-term ambulatory ECG and activity monitoring. METHODS: We included patients who had recorded a full-disclosure ambulatory ECG with a mobile cardiac telemetry device equipped with an accelerometer (PocketECG, MEDICALgorithmics, Poland), with at least 95% AF. Resting HR samples (&#x2264;20 per individual/day) were collected as 10-s daytime (8&#xa0;am to 8&#xa0;pm) measurements after &#x2265;10&#xa0;min of rest. These samples were compared to each individual's mean daytime resting HR. RESULTS: In 832 patients (median age 77 (interquartile range (IQR) 69-83) years, 42% women) with a median registration duration of 13&#xa0;days (IQR 7-22), the population mean daytime resting HR was 85 (&#xb1;15) beats per minute (bpm). A single resting HR differed from the mean daytime resting HR by a mean of &#xb1;10.4% (IQR 3.6-14.4%). When the mean daytime resting HR was &#x2265;110&#xa0;bpm, 29% of resting HR samples were&#xa0;<&#xa0;110&#xa0;bpm, and when the mean daytime resting HR was 80-109&#xa0;bpm,11% of samples were&#xa0;&#x2265;&#xa0;110&#xa0;bpm. Resting HR measurement variability decreased to 5.3% (IQR 1.9-7.5%) when four resting HR samples were averaged. CONCLUSION: In patients with AF, a single resting HR measurement often differs substantially from the mean daytime resting HR. When a precise measurement is clinically relevant, repeated resting HR sampling or ambulatory monitoring can address this measurement imprecision.

Humans

Effects of intradialytic nutrition on dialysis adequacy and fatigue in hemodialysis patients: a randomized crossover study.

OBJECTIVE: To assess intradialytic nutrition's effects on dialysis adequacy and fatigue in maintenance hemodialysis patients. METHODS: A randomized, two-period, two-sequence, self-controlled crossover trial was conducted in two outpatient hemodialysis centers in T&#xfc;rkiye. Thirty-six patients were randomized; 32 completed both periods. The participants received standardized intradialytic nutrition in one period and no food intake during the control period. Dialysis adequacy was evaluated using the urea reduction ratio and single-pool Kt/V. Intradialytic blood pressure was recorded during dialysis sessions, and fatigue severity was measured using the Piper Fatigue Scale at the end of each period. RESULTS: No significant differences were observed in dialysis adequacy or fatigue scores between the two periods. Intradialytic nutrition was associated with greater reductions in systolic and diastolic blood pressure, particularly during the second hour of dialysis. No clinically relevant adverse events occurred. CONCLUSION: Intradialytic nutrition did not compromise dialysis adequacy or worsen fatigue severity but was associated with increased intradialytic blood pressure reductions. Individualized clinical decisions and careful hemodynamic monitoring are warranted when implementing intradialytic nutritional interventions. TRIAL REGISTRATION: ClinicalTrials.gov Identifier: NCT07687498.

Humans

Intensive glycemic control in adults aged 80&#xa0;years and older: A randomized trial evaluating diabetes complications and competing mortality.

AIMS: To evaluate whether intensive glycemic control reduces microvascular or macrovascular events compared with conservative glycemic targets in independently ambulatory adults aged 80&#xa0;years or older with type 2 diabetes. METHODS: We conducted a prospective, randomized, open-label, single-center trial enrolling independently ambulatory adults aged&#xa0;&#x2265;&#xa0;80&#xa0;years with type 2 diabetes. Participants were assigned (1:1) to an intensive glycemic target (HbA1c&#xa0;<&#xa0;7&#xa0;%) or a conservative target (HbA1c&#xa0;<&#xa0;9&#xa0;%) and followed for 5&#xa0;years. Primary outcomes were composite microvascular and macrovascular events. Analyses were done by intention to treat. Cause-specific Cox models and Fine-Gray subdistribution hazard models were used to account for all-cause mortality as a competing event. This trial is registered with ClinicalTrials.gov, NCT00850798. FINDINGS: 206 participants were randomly assigned to intensive (n&#xa0;=&#xa0;102) or conservative (n&#xa0;=&#xa0;104) treatment. At 5&#xa0;years, mean HbA1c was lower in the intensive group than in the conservative group (7&#xb7;42&#xa0;% vs 8&#xb7;21&#xa0;%; p&#xa0;=&#xa0;0&#xb7;005). Intensive therapy did not reduce microvascular events (hazard ratio [HR] 1&#xb7;24, 95&#xa0;% CI 0&#xb7;76-2&#xb7;04) or macrovascular events (HR 1&#xb7;02, 0&#xb7;36-2&#xb7;92). Competing risk analyses showed no reduction in cumulative incidence of vascular outcomes (subdistribution HR approximately 1&#xb7;0 for both). The cumulative incidence of death exceeded that of vascular events, indicating that many participants died before potential glycemic benefits could be realized. Severe hypoglycemia requiring hospitalization was more frequent with intensive therapy (7 vs 1 event). INTERPRETATION: In adults aged 80&#xa0;years or older with type 2 diabetes, intensive glycaemic control improved glycaemic levels but did not reduce vascular events and increased the risk of severe hypoglycaemia. High competing mortality substantially limits the potential long-term benefit of intensive treatment, supporting conservative and individualized glycemic targets in very old adults. TRIAL REGISTRATION: ClinicalTrials.gov Identifier: NCT00850798.

Aged, 80 and over

Program to Avoid Cerebrovascular Events Through Systematic Electronic Tracking and Tailoring of an Eminent Risk Factor: A&#xa0;Randomized Trial.

BACKGROUND: Individuals residing in the southeastern United States experience disproportionately worse stroke outcomes. Although blood pressure (BP) reduction is among the most effective strategies for improving stroke outcomes, fewer than one third of survivors of stroke achieve BP control within 1 year of the index event. METHODS: The PACESETTER (Program to Avoid Cerebrovascular Events Through Systematic Electronic Tracking and Tailoring of an Eminent Risk Factor) trial enrolled patients with stroke and uncontrolled BP from 3 safety-net health care systems in South Carolina. Patients were randomized 1:1 to the PACESETTER intervention, which included a Bluetooth-enabled electronic pill tray, a BP monitor, and a smartphone application for automated data transmission of medication adherence and BP data to a central server or to usual care. The primary outcome was systolic BP <130&#x2009;mm&#x2009;Hg at 12 months, analyzed according to the intention-to-treat principle. RESULTS: The trial was stopped early due to low recruitment during the COVID-19 and funding constraints. Between September 2019 and February 2023, 120 participants were randomized to PACESETTER (n=60) or the usual care arm (n=60). At 4&#xa0;months, systolic BP <130&#x2009;mm&#x2009;Hg favored the PACESETTER arm (48.8% versus 29.3%, P=0.07), but no significant difference was observed at 12 months (50% versus 47.2%, P=0.82). CONCLUSIONS: Because the trial was terminated prematurely, the effect of the PACESETTER intervention on 12-month BP control after stroke remains uncertain. A trial completed to its full term and sufficiently powered to also evaluate key short-term end points is needed. REGISTRATION: URL: https://www.clinicalstrial.org; Unique Identifier: NCT03401489.

Aged

Feasibility and barriers to same-day physical therapy following lumbar fusion surgery.

OBJECTIVE: To evaluate the feasibility of same-day (postoperative day 0; POD0) physical therapy (PT) following lumbar fusion and to identify factors associated with failure to participate. METHODS: This retrospective study analyzed prospectively collected data from patients undergoing single-level posterior spinal fusion (PSF), with or without anterior (ALIF) or lateral (LLIF) interbody fusion, between January and December 2024 at a single institution. A standardized POD0 PT protocol was implemented for eligible patients. Patients were categorized into two groups: successful POD0 PT (ambulatory on POD0) and unable to participate. Demographic and surgical variables were compared between groups. Reasons for inability to participate were recorded and categorized. RESULTS: Among 129 patients in whom POD0 PT was attempted, 84 (65%) successfully participated, while 45 (35%) were unable. There were no significant differences in age, sex, BMI, ASA class, operative time, estimated blood loss, or surgical approach between groups. Patients who successfully completed POD0 PT had a significantly shorter hospital length of stay compared to those who did not (3.4&#xa0;&#xb1;&#xa0;1.6 vs 5.8&#xa0;&#xb1;&#xa0;2.9&#xa0;days, P&#xa0;<&#xa0;0.001), with no differences in complication rates, discharge disposition, emergency department visits, or reoperation rates. The most common barriers to POD0 PT were postoperative pain, medical issues (e.g., orthostatic hypotension, nausea, dizziness), and anesthesia-related somnolence. Less common factors included postoperative restrictions and logistical issues such as brace availability. CONCLUSIONS: POD0 PT following lumbar fusion is feasible in the majority of patients and is associated with a shorter hospital stay without increased complications. Failure to participate was not associated with the baseline patient or surgical characteristics evaluated in this study. Instead, the most common barriers were postoperative pain, transient medical issues, and anesthesia-related somnolence, suggesting that optimization of modifiable perioperative factors may improve the implementation of POD0 PT.

Humans

Blood pressure management after endovascular thrombectomy in acute ischemic stroke: association with symptomatic intracranial hemorrhage and functional outcome at 3&#xa0;months.

BACKGROUND: No clear consensus exists on ideal systolic blood pressure (SBP) targets after endovascular thrombectomy (EVT) following an acute ischemic stroke (AIS). This study investigated the association between SBP parameters within the first 24&#xa0;h after EVT and 3-month functional outcomes and the risk of symptomatic intracranial hemorrhage (sICH). METHODS: We retrospectively collected and prospectively followed clinical, and radiological data for patients undergoing EVT for AIS from 2016 to 2024, including 2-hourly BP measurements during the first 24&#xa0;h and SBP variability assessed by standard deviation (SD) and coefficient of variation (CV). Outcomes included 3-month functional status and sICH, and their associations with post-EVT BP metrics were analyzed. RESULTS: A total of 268 post EVT patients were included with a median age of 61&#xa0;years (IQR, 51-69). Mean SBP was 129.67&#xa0;&#xb1;&#xa0;17.17&#xa0;mm Hg, with SBP variability (SD 12.6&#xa0;&#xb1;&#xa0;5.4&#xa0;mm Hg; CV 9.6&#xa0;&#xb1;&#xa0;3.8&#xa0;%), while good functional outcome and sICH occurred in 39.7&#xa0;% and 4.9&#xa0;% of patients, respectively. Multivariate regression showed that higher admission NIHSS&#xa0;(>15) [0.90 (95&#xa0;%CI, [0.86, 0.95], p&#xa0;=&#xa0;0.000)], recanalization status [1.88 (95&#xa0;%CI, [1.43, 2.48], p&#xa0;=&#xa0;0.00)], and SBP-CV&#xa0;&#x2265;&#xa0;10 [0.44 (95&#xa0;%CI, [0.2, 0.94], p&#xa0;=&#xa0;0.036)] was independently associated with poor 3-month functional outcome, while higher admission NIHSS (>15) [0.87 (95&#xa0;%CI, [0.77,0.98], p&#xa0;=&#xa0;0.02)] and diabetes [0.12 (95&#xa0;%CI, [0.03, 0.54], p&#xa0;=&#xa0;0.006)] predicted increased risk of sICH. CONCLUSIONS: The study showed that reduced BP variability during the first 24&#xa0;h post-EVT was associated with better 3-month functional outcomes. A clear association between SBP and sICH risk was not demonstrated.

Humans

Impact of real-time respiratory function monitoring on neonatal mask ventilation training: a multicentre simulation-based crossover study.

OBJECTIVE: To evaluate whether visibility of respiratory function monitor (RFM) feedback improves mask ventilation performance and influences subsequent ventilation performance during neonatal resuscitation training. DESIGN: multicentre randomised crossover simulation study. PARTICIPANTS: Healthcare professionals involved in neonatal resuscitation training across participating centres. INTERVENTION: Participants performed positive pressure ventilation (PPV) on both term and premature manikins under two conditions: with visible RFM feedback and with the display masked. The order of feedback visibility was randomised. Each participant completed ventilation assessments in both conditions. MAIN OUTCOME MEASURES: Primary outcomes were expired tidal volume (Vte) and mask leak (%). The proportion of breaths within the target Vte range (4-8&#x2009;mL/kg) was calculated as a performance indicator. Secondary outcomes included variability in Vte and mask leak to assess ventilation stability between conditions. RESULTS: Visible RFM feedback was associated with lower mask leak and improved ventilation stability in the preterm manikin and with tidal volumes entering the target range in the term manikin. Participants initially ventilated with visible feedback maintained performance after feedback removal, suggesting a carry-over learning effect. CONCLUSION: In this multicentre crossover simulation study, visible RFM feedback was associated with changes in mask ventilation performance and evidence of a carry-over learning effect following feedback removal. Real-time visibility of respiratory parameters may strengthen neonatal resuscitation training.

Humans

Effectiveness of the DASH diet versus alternative dietary interventions for hypertension management: A systematic review and meta-analysis.

BACKGROUND: The Dietary Approaches to Stop Hypertension (DASH) diet is widely recommended for blood pressure control; however, its comparative effectiveness relative to other structured dietary interventions remains uncertain. OBJECTIVE: To evaluate the comparative effectiveness of the DASH diet versus alternative dietary interventions on blood pressure and cardiometabolic outcomes in adults. METHODS: A systematic review and meta-analysis of randomized controlled trials was conducted in accordance with PRISMA guidelines. Multiple databases were searched from inception to February 2026. Eligible studies included adults with elevated blood pressure or hypertension comparing the DASH diet with other dietary interventions or usual care. Continuous outcomes were pooled using random-effects models and expressed as mean differences (MD) or standardized mean differences (SMD). Risk of bias was assessed using the Cochrane RoB 2 tool, and certainty of evidence was evaluated using the GRADE approach. RESULTS: A total of 22 randomized controlled trials were included in the qualitative synthesis, of which 10 were included in the meta-analysis. The DASH diet did not demonstrate a statistically significant advantage over comparator diets in reducing systolic blood pressure (MD = 1.30; 95% CI: -1.54 to 4.14) or diastolic blood pressure (MD = 0.21; 95% CI: -3.72 to 4.14), with substantial heterogeneity observed across studies. Significant effects were identified for selected cardiometabolic outcomes, including reductions in urinary sodium excretion (MD = -32.89; 95% CI: -62.76 to -3.01), LDL cholesterol (MD = -8.59; 95% CI: -14.64 to -2.54), and glycated hemoglobin (HbA1c) (MD = -0.49; 95% CI: -0.52 to -0.46), as well as an increase in urinary potassium excretion (MD = 11.76; 95% CI: 4.08 to 19.44). The certainty of evidence ranged from moderate to very low across outcomes. CONCLUSIONS: The DASH diet was not superior to other dietary interventions in reducing blood pressure; however, it demonstrated consistent benefits in selected cardiometabolic parameters. Given the overall low certainty of evidence and substantial heterogeneity, these findings should be interpreted cautiously. Future research should focus on well-designed trials with standardized outcomes and longer follow-up to clarify comparative effectiveness.

Humans