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48) (p 0.05). CONCLUSIONS In the setting of symptomatic individuals, an increased amount of epicardial fat was associated with larger amount of coronary artery calcifications and was observed in individuals with obstructive CAD, however without predictive value to confidently determine CAD presence and severity. V.BACKGROUND Patients with heart failure (HF) are at risk for vascular brain injury. Cerebral cortical microinfarcts (CMIs) are a novel MRI marker of vascular brain injury. This study aims to determine the occurrence of CMIs in patient with HF and their clinical correlates, including haemodynamic status. METHODS From the Heart-Brain Study, a multicenter prospective cohort study, 154 patients with clinically stable HF without concurrent atrial fibrillation (mean age 69.5 ± 10.1, 32% female) and 124 reference participants without HF (mean age 65.6 ± 7.4, 47% females) were evaluated for CMIs on 3 T MRI. CMI presence in HF was tested for associations with vascular risk profile, cardiac function and history, MRI markers of vascular brain injury and cognitive profile. RESULTS CMI occurrence was higher in patient with HF (17%) than reference participants (7%); after correction for age and sex OR 2.5 [95% CI 1.1-6.0] p = .032; after additional correction for vascular risk factors OR 2.7 [1.0-7.1] p = .052. In patients with HF, CMI presence was associated with office hypertension (OR 2.7 [1.2-6.5] p = .021) and a lower cardiac index (B = -0.29 [-0.55--0.04] p = .023 independent of vascular risk factors), but not with cause or duration of HF. Presence of CMIs was not associated with cognitive performance in patients with HF. CONCLUSIONS CMIs are a common occurrence in patients with HF and related to an adverse vascular risk factor profile and severity of cardiac dysfunction. CMIs thus represent a novel marker of vascular brain injury in these patients. V.BACKGROUND His Bundle Pacing (HBP) is attracting interest as an alternative to traditional right ventricular pacing (RVP) because it avoids electrical dyssynchrony induced by RVP. This study aims to evaluate the effect of heart size on benefit from HBP compared to RVP in terms of achieving electrical synchrony. METHODS Fifty-nine patients with HBP and a RVP back-up lead underwent pre-implantation echocardiography to measure left ventricular end-diastolic volume (LVEDV). Electrical benefit from HBP was calculated as the difference in QRS duration (QRSd) between RVP and HPB. RESULTS LVEDV was significantly correlated with RVP QRSd (R = 0.53; p less then 0.001). In contrast, LVEDV was unrelated to HBP QRSd (R = 0.16; p = 0.24). Electrical benefit of HBP over RVP was directly related with LVEDV (R = 0.43; p = 0.001). In addition, electrical benefit of HBP was larger for patients with LVEDV above median (99 mL) than below (49 ± 27 ms vs. 34 ± 19 ms, p = 0.014). CONCLUSIONS This study is the first to demonstrate that patients with larger LV size may benefit most from HBP as a replacement of traditional RVP to avoid electrical dyssynchrony. Our results indicate that LV size impacts QRSd during RVP with slow cell-to-cell conduction, whereas it does not affect electrical synchrony during HBP with fast His-Purkinje conduction. V.Feed intake and time spent eating at the feed bunk are important predictors of dairy cows' productivity and animal welfare, and deviations from normal eating behavior may indicate subclinical or clinical disease. In the current study, we developed a random forests algorithm to predict dairy cows' daily eating time (of a total mixed ration from a common feed bunk) using data from a 3-dimensional accelerometer and a radiofrequency identification (RFID) prototype device (logger) mounted on a neck collar. Models were trained on continuous focal animal observations from a total of 24 video recordings of 18 dairy cows at the Danish Cattle Research Centre (Foulum, Tjele, Denmark). Each session lasted from 21 to 48 h. The models included both the present time signal and observations several seconds back in time (lag window). These time-lagged signals were included with the purpose of capturing changes over time. Because of the high costs of installing an RFID antenna in the feed bunk, we also investigated a model basa lag window size of 128 s). In contrast, prediction accuracy only slightly decreased with decreasing lag window size (median balanced accuracy of 0.94 at a lag window size of 8 s). We suggest a lag window size of 64 s for further development of the prototype logger. The methodology presented in this paper may be relevant for future automatic recordings of eating behavior in commercial dairy herds. The objective was to determine the effects of converting calves from a component-fed ration to a total mixed ration (TMR) at 8, 10, or 12 wk of age on intake, growth, and nutrient digestibility. Holstein calves (n = 40) were randomly assigned to 1 of 4 groups (no TMR, TMR conversion at 8, 10 or 12 wk; T0, T8, T10, and T12, respectively). Calves were weaned at 6 wk of age, housed individually, and studied from 7 to 14 wk of age. Rations, consisting of a 20% crude protein texturized starter and grass hay, were offered ad libitum as separate components or as a TMR with 85% starter and 15% grass hay on a dry matter (DM) basis. https://www.selleckchem.com/products/Decitabine.html Intakes and body weights (BW) were measured weekly. Component intake for TMR was calculated from the proportion of grass hay and starter contained in the TMR. Fecal grab samples were collected every 9 h over 3 d for a total of 8 samples that formed a composite at 9, 11, and 13 wk of age from the same 4 calves per group. Rumen fluid samples were collected via esophageal tube at -1, 0, 3, and at 9, 11, and 13 wk of age. Conversion to TMR increased rumen pH. These results indicate that TMR conversion increased hay consumption and subsequently decreased starter and total DM intake. This led to reduced weight and structural growth; however, calves that were converted to TMR as early as 8 wk still achieved adequate growth. The increase in rumen pH and subsequent increase in fiber digestibility allowed for calves to be converted to a 15% grass hay TMR as early as 8 wk and still achieve desirable growth goals.
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