Remote blood pressure monitoring with a wearable photoplethysmographic device in patients undergoing coronary angiography: the senbiosys substudy.

Aims: The purpose of this study is to evaluate the accuracy of the Senbiosys device in measuring blood pressure (BP) by photoplethysmography (PPG) in patients undergoing coronary angiography.

Methods: This is a substudy within the Senbiosys trial, which is a prospective, single-arm, single-center study, evaluating the accuracy of BP estimation of the Senbiosys device compared to invasive BP. Patients referred for coronary angiography underwent invasive BP measurement and simultaneously wore the Senbiosys ring.

Ear and Finger PPG Wearables for Night and Day Beat-to-Beat Interval Detection.

In this work, we study the accuracy of ear and finger photoplethysmography (PPG) based inter-beat interval (IBI) detection and estimation compared to the R-to-R interval (RRI) values derived from the electrocardiography (ECG). Seven male subjects with a mean age of 34.29±5.

Photoplethysmography Based Blood Pressure Monitoring Using the Senbiosys Ring.

In this work, we evaluate the accuracy of our cuffless photoplethysmography based blood pressure monitoring (PPG-BPM) algorithm. The algorithm is evaluated on an ultra low power photoplethysmography (PPG) signal acquired from the Senbiosys Ring. The study involves six male subjects wearing the ring for continuous finger PPG recordings and non-invasive brachial cuff inflated every two to ten minutes for intermittent blood pressure (BP) measurements.

PPG-Based Respiratory Rate Monitoring Using Hybrid Vote-Aggregate Fusion Technique.

In this work, we present a low-complexity photoplethysmography-based respiratory rate monitoring (PPG-RRM) algorithm that achieves high accuracy through a novel fusion method. The proposed technique extracts three respiratory-induced variation signals, namely the maximum slope, the amplitude, and the frequency, from the PPG signal. The variation signals undergo time domain peak detection to identify the inter-breath intervals and produce three different instantaneous respiratory rate (IRR) estimates.

Continuous PPG-Based Blood Pressure Monitoring Using Multi-Linear Regression.

In this work, we present a photoplethy smography-based blood pressure monitoring algorithm (PPG-BPM) that solely requires a photoplethysmography (PPG) signal. The technology is based on pulse wave analysis (PWA) of PPG signals retrieved from different body locations to continuously estimate the systolic blood pressure (SBP) and the diastolic blood pressure (DBP). The proposed algorithm extracts morphological features from the PPG signal and maps them to SBP and DBP values using a multiple linear regression (MLR) model.

Remote Blood Pressure Monitoring With a Wearable Photoplethysmographic Device (Senbiosys): Protocol for a Single-Center Prospective Clinical Trial.

Background: Wearable devices can provide user-friendly, accurate, and continuous blood pressure (BP) monitoring to assess patients' vital signs and achieve remote patient management. Remote BP monitoring can substantially improve BP control. The newest cuffless BP monitoring devices have emerged in patient care using photoplethysmography.

A 2.6 μW Monolithic CMOS Photoplethysmographic (PPG) Sensor Operating With 2 μW LED Power for Continuous Health Monitoring.

Photoplethysmography (PPG) enables wearable vitals monitoring. Nevertheless, it is still limited by the few mA of the LEDs driving current. We present a PPG sensor integrating an array of dedicated pinned-photodiodes (PPD) with a full readout chain integrated in a 0.

Patient-Specific Bioinks for 3D Bioprinting of Tissue Engineering Scaffolds.

Bioprinting has emerged as a promising tool in tissue engineering and regenerative medicine. Various 3D printing strategies have been developed to enable bioprinting of various biopolymers and hydrogels. However, the incorporation of biological factors has not been well explored.

Neurophysiological assessment for evaluating residual cognition in vegetative and minimally conscious state patients: a pilot study.

The aim of this study was to assess residual cognitive function and perform outcome evaluation in vegetative state (VS) and minimally conscious state (MCS) patients, using Neurowave, a system able to monitor event-related potentials (ERPs) induced by neurosensory stimulation. Eleven VS and five MCS patients underwent neurological examination and clinical evaluation performed using validated clinical and behavioral scales; they also underwent neurosensory stimulation, which consisted of administration of target images (rare stimuli), relevant to the patient's personal history and having emotional significance, alternated with nontarget images ("standard" stimuli), which had no emotional significance. All simultaneous ERP responses at baseline (T0) and at three months from T0 (T1) were recorded.

Three-Dimensional Versus Two-Dimensional Laparoscopic Cholecystectomy: Is Surgeon Experience Relevant?

Background: A prospective randomized comparison of three-dimensional (3D) versus two-dimensional (2D) imaging during elective laparoscopic cholecystectomy (LC), both performed separately by an advanced laparoscopic surgeon and by a surgeon experienced in open surgical procedures but a novice at laparoscopic procedures, was designed to address the issue of whether 3D systems offer real operative time advantages to this laparoscopic procedure.

Patients And Methods: Eighty patients were randomized the day of surgery by random computer-generated allocation list to receive either a 3D or 2D high-definition imaging system LC by two surgeons with differing experience. After the insertion of the access ports the surgical procedure was divided in two component tasks.

Three-Dimensional (3D) Versus Two-Dimensional (2D) Laparoscopic Bariatric Surgery: a Single-Surgeon Prospective Randomized Comparative Study.

Background: To address the issue whether three-dimensional (3D) offers real operative time advantages to the laparoscopic surgical procedure, we have designed a single-surgeon prospective randomized comparison of 3D versus two-dimensional (2D) imaging during two different bariatric procedures.

Methods: Forty morbidly obese patients were randomized on the day of surgery by a random computer-generated allocation list to receive either a 3D high-definition (HD) display or 2D HD imaging system laparoscopic bariatric procedure by a single experienced surgeon. Forty operations were performed with either a 3D HD display or 2D HD imaging system.

Giant retroperitoneal liposarcoma: Case report and review of the literature.

Aim: Retroperitoneal soft-tissue sarcomas are relatively uncommon diseases, the most frequent histotype, ranging from 20% to 45% of all cases, is represented by liposarcoma, which is a hard-to treat condition for its local aggressiveness and clinical aspecificity.

Presentation Of Case: We report a case of a 64-years-old woman who underwent surgical resection for a giant pleomorphic retroperitoneal liposarcoma.

Discussion: Currently chemotherapy for retroperitoneal soft-tissue sarcomas is no effective, and radiotherapy has limited efficacy due to the toxicity affecting adjacent intra-abdominal structures, showed validity only in case of high-grade malignancy by reducing local recurrence, but with no advantage in overall survival.

Anastomotic leakage following colorectal resection for cancer: how to define, manage and treat it.

Aim: Aim of the study was to report the experience of a single center in the surgical treatment of anastomotic leak after colorectal resection for cancer, focusing on its incidence, diagnosis and management, with particular attention to surgical options.

Methods: Demograhic and clinical data from 1284 consecutive patients operated on for colorectal cancer during a period of 11 years, were prospectively collected and inserted into an electronic database. For the purpose of the study, only patients in whom an anastomosis was performed were considered.

Unilateral synchronous breast tumors. Rare association of myofibroblastoma and osteosarcoma.

The authors describe the case of a patient with two particularly rare contiguous tumors, myofibroblastoma and osteosarcoma, in the same breast. Rare does not mean untreatable, and the chance of recovery is no less than with more common tumors. However, rare tumors do present a significant problem for pathologists due to diagnostic difficulties, and so an exact prognosis is not always possible.

Pelvic lymphedema in rectal cancer: a magnetic resonance feasibility study: a preliminary report.

Background: Functional pelvic disorders in patients undergoing conservative surgical approach for rectal cancer are considered a major public health issue and represent one third of cost of colorectal cancer. We investigated the hypothesis that lymphadenectomy, involves the pelvic floor results in a localized hides or silent pelvic lymphedema characterized by symptoms without signs.

Patients And Methods: We examined 13 colo-rectal cancer patients: five intra-peritoneal adenocarcinoma: 1 sigmoid and 4 upper third rectal cancer (1 male and 3 female) and 9 extra-peritoneal adenocarcinoma: 3 middle and 5 lower third rectal cancer (4 male and 5 female) using 1.

Indications for and limits of conservative surgery in breast cancer.

Improvements in diagnostic techniques and, above all, breast cancer screening campaigns - essential for early diagnosis - have enabled the objectives of conservative surgery to be pursued: disease control, no or low incidence of recurrences and an excellent esthetic result. However, to reach these objectives, it is essential to ensure a careful evaluation of the medical history of every patient, a detailed clinical examination and the correct interpretation of imaging. Particular attention should be paid to all factors influencing the choice of treatment and/or possible local recurrence: age, site, tumor volume, genetic predisposition, pregnancy, previous radiotherapy, pathological features, and surgical margins.

Ectopic parotid: case report.

A recent case led the authors to re-examine the clinical characteristics of the cervical ectopia of the major salivary glands. These glands develop in the embryo between the sixth and seventh week, starting with the formation of endodermal invaginations of the branchial section of the floor of the primitive mouth. These cell cords, initially solid, proliferate in the underlying mesenchyme, starting from the opening of the future excretory duct, and subsequently branch and canalize.

[Our experience in inguinal hernia recurrences treatment].

Reporting their personal experience, the authors focus on characteristics and causes of recurrence, either after traditional surgery or with tension-free technique. They describe difficulties and advantages in open interventions and laparoscopic ones. Facing a relapse it's convenient to assume an "eclectic" behaviour, thinking both of general and specific single patient anatomo-pathologic features.