Improvement of Hypoalbuminemia and Hepatic Reserve after Stent Placement for Post-Surgical Portal Vein Stenosis.

Purpose: To investigate the change in serum albumin levels and hepatic reserve scores before and after portal vein stent placement (PVS) for post-surgical portal vein stenosis.

Material And Methods: A retrospective cohort of patients undergoing PVS after abdominal surgery between 2007 and 2021 was analyzed. Patients' age, sex, and PVS technical success (defined by portal vein patency at final portography) were evaluated.

Development of postoperative delirium prediction models in patients undergoing cardiovascular surgery using machine learning algorithms.

Associations between delirium and postoperative adverse events in cardiovascular surgery have been reported and the preoperative identification of high-risk patients of delirium is needed to implement focused interventions. We aimed to develop and validate machine learning models to predict post-cardiovascular surgery delirium. Patients aged ≥ 40 years who underwent cardiovascular surgery at a single hospital were prospectively enrolled.

A Deep Learning-Based Model for Classifying Osteoporotic Lumbar Vertebral Fractures on Radiographs: A Retrospective Model Development and Validation Study.

Early diagnosis and initiation of treatment for fresh osteoporotic lumbar vertebral fractures (OLVF) are crucial. Magnetic resonance imaging (MRI) is generally performed to differentiate between fresh and old OLVF. However, MRIs can be intolerable for patients with severe back pain.

Quantitative magnetic resonance imaging for evaluating of the cerebrospinal fluid kinetics with 17O-labeled water tracer: A preliminary report.

The aim of this study was to evaluate the feasibility of kinetic analysis of cerebrospinal fluid (CSF) using O-labeled water tracer. Four subjects (two idiopathic normal pressure hydrocephalus (iNPH) and two possible AD dementia patients) were prospectively included. Injectable formulation of O-labeled water containing 10 mol% of HO (PSO17), was intrathecally administered to the subjects with the lateral decubitus position between the 3rd and 4th lumbar vertebrae.

Spontaneous rupture of the pancreatic arcade artery caused by neurofibromatosis type 1 successfully treated using emergency transcatheter arterial embolization, partial intra-aortic balloon occlusion, and stent graft placement: a case report and review of the literature.

Background: Vascular abnormalities in neurofibromatosis type 1 (NF1) are rare, but are the second leading cause of death in persons with NF1. In NF1 vasculopathy (NF-V), fatal bleeding due to a spontaneous arterial rupture sometimes occurs. Ruptured extracranial arteries in patients with NF1 often involve thoracic vessels, such as the intercostal and subclavian arteries; very few reports exist regarding the abdominal region.

Mathematical model to estimate the increase in firefighters' core temperature during firefighting activity with a portable calorimeter.

We developed a mathematical model to estimate the increase in firefighters' core body temperature from energy expenditure (EE) measured by accelerometry to prevent heat illness during firefighting. Wearing firefighter personal protective equipment, seven male subjects aged 23-42 years underwent a graded walking test on a treadmill while esophageal temperature (T) and skin temperature were measured with thermocouples and EE was measured with a tri-axial accelerometer. To estimate the increase in T from EE, we proposed a mathematical model composed of the heat capacity of active muscles (C, kcal·°C), the heat capacity of the sum of resting muscles and skin (C), the resistance to heat flux from C to C (R, °C·min·kcal), and the resistance from C to the skin surface (R).

Seasonality in physical activity and walking of healthy older adults.

Background: An increasing number of older adults require improvements in their quality of life. Physical activities, particularly walking ability, are of primary importance for older adults. The influence of season on physical activity has not been sufficiently studied among older adults.

Combined effects of age and gender on gait symmetry and regularity assessed by autocorrelation of trunk acceleration.

Background: The gait of a healthy person is believed to be more regular and symmetrical than those of an individual with a disease. Thus, symmetry and regularity are important indicators of human gait.

Methods: The effects of age and gender on gait symmetry and regularity were investigated in 87 Japanese participants by measuring trunk accelerometry during a 7-m walk.

Development of bipedal walking in humans and chimpanzees: a comparative study.

Development of bipedal walking from the very early stage of walking was studied longitudinally in infant humans and chimpanzees. In contrast to adults, infants of neither species could walk steadily and rhythmically step by step. Short braking duration and small recovery of mechanical energy were demonstrated in infants of both species.

Development of energy and time parameters in the walking of healthy human infants.

Sixteen infants were analyzed longitudinally from the onset of independent walking to 3 years of age using time parameters, speed and energy recovery. Considerable variation and irregularities were observed in many parameters of infant walking, especially until 13 months of age when infants had difficulty in walking steadily step by step. Infant walking until 3 years of age was characterized by a small braking duration, caused mainly by the forward inclination of the trunk, a large relative stance phase duration, which maintained static balance, short stride length, due to the small range of the lower limb joint angle, and a small recovery of external energy.

Differentiation between fore- and hindlimb bones and locomotor behaviour in primates.

Primate appendicular limb bones were measured on the cross-sectional geometry at the mid-length of the humerus and femur and on the external dimensions of long bones of the same individuals. Cross sections were directly measured by means of computer tomography or direct sectioning. The morphometry of bones and locomotor behaviour is discussed from the viewpoint of the functional differentiation between the fore- and hindlimbs.

Acquirement of stability and mobility in infant gait.

We examined gait development in a longitudinal and cross-sectional study in 35 infants, age range 7-70 months. We estimated walking stability from mediolateral motion of body segments and mobility from the angular displacement of joints. Motion at the shoulder, hip, knee and ankle decreased significantly over several months after the onset of walking and thereafter changed gradually.

Primate limb bones and locomotor types in arboreal or terrestrial environments.

Postcranial limb bones were compared among primates of different locomotor types. Seventy-one primate species, in which all families of primates were included, were grouped into nine locomotor types. Osteometrical data on long bones and data on the cross-sectional geometry of the humerus and the femur were studied by means of allometric analysis and principal component analysis.