In the last 30 years several organizations have developed protocols for clinical validation of blood pressure measuring devices. An international initiative was recently launched by the US Association for the Advancement of Medical Instrumentation (AAMI), the European Society of Hypertension Working Group on Blood Pressure Monitoring (ESH) and the International Organization for Standardization (ISO), aiming to reach consensus on a universal AAMI/ESH/ISO validation standard. The purpose of this statement by the ESH Working Group on Blood Pressure Monitoring is to provide practical guidance for investigators performing validation studies according to the AAMI/ESH/ISO Universal Standard (ISO 81060-2:2018), to ensure that its stipulations are meticulously implemented and data are fully reported. Thus, this statement provides: (i) a list of key recommendations for validation studies of intermittent non-invasive automated blood pressure measuring devices according to the AAMI/ESH/ISO Universal Standard, (ii) practical stepwise guidance for researchers performing these validation studies, (iii) a checklist for authors and reviewers of such studies.

Summary Emerging evidence shows that severe coronavirus disease 2019 (COVID‐19) can be complicated with coagulopathy, namely disseminated intravascular coagulation, which has a rather prothrombotic character with high risk of venous thromboembolism. The incidence of venous thromboembolism among COVID‐19 patients in intensive care units appears to be somewhat higher compared to that reported in other studies including such patients with other disease conditions. D‐dimer might help in early recognition of these high‐risk patients and also predict outcome. Preliminary data show that in patients with severe COVID‐19, anticoagulant therapy appears to be associated with lower mortality in the subpopulation meeting sepsis‐induced coagulopathy criteria or with markedly elevated d‐dimer. Recent recommendations suggest that all hospitalized COVID‐19 patients should receive thromboprophylaxis, or full therapeutic‐intensity anticoagulation if such an indication is present.

Objective: Although clinical hypothyroidism (HO) is associated with insulin resistance, there is no information on insulin action in subclinical hypothyroidism (SHO). Design and methods: To investigate this, we assessed the sensitivity of glucose metabolism to insulin both in vivo (by an oral glucose tolerance test) and in vitro (by measuring insulin-stimulated rates of glucose transport in isolated monocytes with flow cytometry) in 21 euthyroid subjects (EU), 12 patients with HO, and 13 patients with SHO. Results: All three groups had comparable plasma glucose levels, with the HO and SHO having higher plasma insulin than the EU (P!0.05). Homeostasis model assessment index was increased in HO (1.97G0.22) and SHO (1.99G0.13) versus EU (1.27G0.16, P!0.05), while Matsuda index was decreased in HO (3.89G0.36) and SHO (4.26G0.48) versus EU (7.76G0.87, P!0.001), suggesting insulin resistance in both fasting and post-glucose state. At 100 mU/ml insulin: i) GLUT4 levels on the monocyte plasma membrane were decreased in both HO (215G19 mean fluorescence intensity, MFI) and SHO (218G24 MFI) versus EU (270G25 MFI, PZ0.03 and 0.04 respectively), and ii) glucose transport rates in monocytes from HO (481G30 MFI) and SHO (462G19 MFI) were decreased versus EU (571G15 MFI, PZ0.04 and 0.004 respectively). Conclusions: In patients with HO and SHO: i) insulin resistance was comparable; ii) insulin-stimulated rates of glucose transport in isolated monocytes were decreased due to impaired translocation of GLUT4 glucose transporters on the plasma membrane; iii) these findings could justify the increased risk for insulin resistance-associated disorders, such as cardiovascular disease, observed in patients with HO or SHO.

There is a growing body of evidence suggesting that alterations in the adhesion properties of neoplastic cells endow them with an invasive and migratory phenotype. Indeed, changes in the expression or function of cell adhesion molecules have been implicated in all steps of tumor progression, including detachment of tumor cells from the primary site, intravasation into the blood stream, extravasation into distant target organs, and formation of the secondary lesions. This review presents recent data regarding the role of cell adhesion molecules in tumor development and progress with concern to their clinical exploitation as potential biomarkers in neoplastic diseases.

Activation of WBC leads to increased expression of GLUT1, GLUT3 and GLUT4 isoforms on their plasma membrane; this process was further augmented by insulin. During infection, these mechanisms may help to redistribute glucose as a potential source of energy away from peripheral tissues and direct it towards cells that mediate the immune response and are therefore crucial to survival.

S ystolic blood pressure (BP) and pulse pressure (PP) are known to be higher when assessed at the brachial artery compared with the aorta because of PP amplification across the arterial tree.1 From the physiological point of view, target organs, such as the heart and large arteries, are directly exposed to central rather than brachial BP, which could translate into superior predictive value of the former.1 A recent meta-analysis concluded that central PP is marginally superior to brachial PP in predicting clinical events. 2 Intense research has been recently performed on the clinical relevance of central BP assessed noninvasively using different techniques, and reference values have been recently estimated.1,3 A crucial remaining question is whether central BP offers significant improvement in cardiovascular risk assessment and stratification compared with brachial (peripheral) BP. Several studies showed superiority of central compared with brachial BP in terms of association with several indices of preclinical target-organ damage; yet these findings have not always been consistent (online-only Data Supplement).A systematic review and meta-analysis of the evidence on the relationship of central versus brachial BP with preclinical target-organ damage were performed. Methods Search StrategyA systematic literature search was performed in PubMed database to identify studies published until April 2014 providing comparative data on the association of central versus brachial BP and target-organ damage. Keywords for the search were: central pressure, target organ, left ventricular, carotid intima-media thickness, urine albumin, pulse wave velocity, or arterial stiffness. Data sources were also identified through manual search of references of articles. The study selection and data extraction were performed independently by 2 investigators (S.L. and M.E.Z.). Disagreements were resolved by consensus with a senior author (A.K.). Abstract-Accumulating Selection Criteria and Data ExtractionA systematic review was performed following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) recommendations (http://www.prisma-statement.org). Eligible studies were full-text articles in English and presenting data from observational (cross-sectional or case-control), longitudinal, retrospective, and prospective studies in adults, which included assessment of central BP and evaluation of indices of preclinical target-organ damage. For the systematic review, all studies reporting any kind of relationship between central BP and target-organ damage (ie, bivariate correlations, univariate or multivariate regression analyses with the target variables or their log-transformed values) were included. Central BP was considered suitable if it was assessed noninvasively by recording pressure waveforms at the radial, carotid, or brachial arteries, using either applanation tonometry or oscillometry. Likewise, indices of target-organ damage that were considered appropriate for the analysis included (1) echocardiograph...

Severe coronavirus disease 2019 (COVID-19) is associated with increased risk of venous thromboembolism events (VTE). This study performed a systematic review in PubMed/EMBASE of studies reporting the prevalence of VTE in patients with COVID-19 who were totally screened/assessed for deep vein thrombosis (DVT) and/or for pulmonary embolism (PE). Among 47 candidate studies ( n = 6459; 33 in Europe), 17 studies ( n = 3973; weighted age 63.0 years, males 60%, intensive care unit (ICU) 16%) reported the prevalence of PE with a pooled estimate of 32% (95% CI: 25, 40%), and 32 studies ( n = 2552; weighted age 62.6 years, males 57%, ICU 49%) reported the prevalence of DVT with a pooled estimate of 27% (95% CI: 21, 34%). A total of 36 studies reported the use of at least prophylactic antithrombotic treatment in the majority of their patients. Meta-regression analysis showed that the prevalence of VTE was higher across studies with a higher percentage of ICU patients and higher study population mean D-dimer values, and lower in studies with mixed dosing of anticoagulation in ⩾ 50% of the population compared to studies with standard prophylactic dosing of anticoagulation in < 50% of the population. The pooled odds ratio for death in patients with COVID-19 and VTE versus those without VTE (17 studies, n = 2882) was 2.1 (95% CI: 1.2, 3.6). Hospitalized patients with severe COVID-19 are at high VTE risk despite prophylactic anticoagulation. Further research should investigate the individualized VTE risk of patients with COVID-19 and the optimal preventive antithrombotic therapy. PROSPERO Registration No.: CRD42020185543.

Home blood pressure monitoring is useful in detecting white-coat and masked hypertension and is recommended for patients with suspected or treated hypertension. The prognostic significance of white-coat and masked hypertension detected by home measurement was investigated in 6458 participants from 5 populations enrolled in the International Database of HOme blood pressure in relation to Cardiovascular Outcomes. During a median follow-up of 8.3 years, 714 fatal plus nonfatal cardiovascular events occurred. Among untreated subjects (n=5007), cardiovascular risk was higher in those with white-coat hypertension (adjusted hazard ratio 1.42; 95% CI [1.06–1.91]; P =0.02), masked hypertension (1.55; 95% CI [1.12–2.14]; P <0.01) and sustained hypertension (2.13; 95% CI [1.66–2.73]; P <0.0001) compared with normotensive subjects. Among treated patients (n=1451), the cardiovascular risk did not differ between those with high office and low home blood pressure (white-coat) and treated controlled subjects (low office and home blood pressure; 1.16; 95% CI [0.79–1.72]; P =0.45). However, treated subjects with masked hypertension (low office and high home blood pressure; 1.76; 95% CI [1.23–2.53]; P =0.002) and uncontrolled hypertension (high office and home blood pressure; 1.40; 95% CI [1.02–1.94]; P =0.04) had higher cardiovascular risk than treated controlled patients. In conclusion, white-coat hypertension assessed by home measurements is a cardiovascular risk factor in untreated but not in treated subjects probably because the latter receive effective treatment on the basis of their elevated office blood pressure. In contrast, masked uncontrolled hypertension is associated with increased cardiovascular risk in both untreated and treated patients, who are probably undertreated because of their low office blood pressure.