Search results for "ARTERIAL"
showing 10 items of 714 documents
<title>Optical non-invasive monitoring of skin blood pulsations</title>
2005
Time resolved detection and analysis of the skin backscattered optical signals (remission photoplethysmography or PPG) provide rich information on skin blood volume pulsations and can serve for reliable cardiovascular assessment. The single- and multi-channel PPG concepts are discussed in this work. Simultaneous data flow from several body locations allows one to study the heartbeat pulse wave propagation in real time and evaluate the vascular resistance. Portable single-, dual- and four-channel PPG monitoring devices with special software have been designed for real-time data acquisition and processing. The clinical studies confirmed their potential in the monitoring of heart arrhythmias, …
Colour Doppler-guided haemorrhoidal artery ligation: an adjunct in identification of haemorrhoidal vessels.
2012
Not available (case report)
Imaging-guided interventions modulating portal venous flow: Evidence and controversies
2021
Portal hypertension is defined by an increase in the portosystemic venous gradient. In most cases, increased resistance to portal blood flow is the initial cause of elevated portal pressure. More than 90% of cases of portal hypertension are estimated to be due to advanced chronic liver disease or cirrhosis. Transjugular intrahepatic portosystemic shunts, a non-pharmacological treatment for portal hypertension, involve the placement of a stent between the portal vein and the hepatic vein or inferior vena cava which helps bypass hepatic resistance. Portal hypertension may also be a result of extrahepatic portal vein thrombosis or compression. In these cases, percutaneous portal vein recanalis…
Loco-regional treatment of hepatocellular carcinoma: Role of contrast-enhanced ultrasonography
2022
Hepatocellular carcinoma (HCC) is one of the few cancers for which locoregional treatments (LRTs) are included in international guidelines and are considered as a valid alternative to conventional surgery. According to Barcelona Clinic Liver Cancer classification, percutaneous treatments such as percutaneous ethanol injection, radiofrequency ablation and microwave ablation are the therapy of choice among curative treatments in patients categorized as very early and early stage, while transcatheter arterial chemoembolization is considered the better option for intermediate stage HCC. A precise assessment of treatment efficacy and surveillance is essential to optimize survival rate, whereas r…
Hypertensive heart disease: diagnostic and therapeutic guidelines
2008
High-tech imaging and molecular biomarkers of fibrosis in hypertension-induced left ventricular hypertrophy
2017
La hipertensión arterial (HTA) es el factor de riesgo cardiovascular más importante según la organización mundial de salud. La enfermedad cardiovascular (ECV) es la principal causa de mortalidad en todo el mundo, y representa 17 millones de muertes al año. Se estima que las complicaciones relacionadas con la HTA representan 9,4 millones de eventos cardiovasculares mortales por año. Aproximadamente la mitad de las muertes mundiales debidas a enfermedades cardíacas, accidentes cerebrovasculares e insuficiencia cardíaca se pueden atribuir a la HTA. El sistema cardiovascular es sensible a los estimulantes fisiológicos y patológicos. La elevación de la presión arterial (PA) y el consiguiente est…
Péptidos antihipertensivos derivados de proteínas lácteas: producción mediante levaduras no convencionales y mecanismos de acción
2015
En esta Tesis Doctoral se ha estudiado el potencial de levaduras no convencionales, pertenecientes a las especies Debaryomyces hansenii, Kluyveromyces lactis y Kluyveromyces marxianus, para generar hidrolizados y péptidos antihipertensivos provenientes de caseína (CN) o lactoferrina (LF). Además, se ha profundizado en el mecanismo de acción responsable del efecto antihipertensivo. Para ello, se han utilizado diferentes aproximaciones experimentales que incluyen ensayos in vitro para determinar los efectos inhibitorios sobre la actividad de la enzima conversora de angiotensina (ECA) y ensayos in vivo en ratas espóntaneamente hipertensas (SHRs) para estudiar los efectos sobre la presión arter…
Incidencia y morbimortalidad en pacientes con diabetes mellitus tipo 2 de nuevo diagnóstico en pacientes hipertensos o prehipertensos no diabéticos y…
2017
INCIDENCIA Y MORBIMORTALIDAD EN PACIENTES CON DIABETES MELLITUS TIPO 2 DE NUEVO DIAGNÓSTICO EN PACIENTES HIPERTENSOS O PREHIPERTENSOS NO DIABÉTICOS Y FACTORES DETERMINANTES. Introducción Las enfermedades cardiovasculares son la principal causa de mortalidad global en nuestro entorno, y la hipertensión arterial (HTA) y la diabetes mellitus (DM) son dos de los principales factores de riesgo cardiovascular que favorecen la ateroesclerosis y sus principales complicaciones como el ictus, cardiopatía isquémica y enfermedad arterial periférica. La HTA y la DM coexisten con frecuencia debido a que comparten factores etiológicos y patogénicos comunes. Además, la HTA predispone a la aparición de DM e…
Spanish Society of Hypertension position statement on the 2017 ACC/AHA hypertension guidelines
2018
The American College of Cardiology (ACC) and the American Heart Association (AHA) have recently published their guidelines for the prevention, detection, evaluation, and management of hypertension in adults. The most controversial issue is the classification threshold at 130/80 mmHg, which will allow a large number of patients to be diagnosed as hypertensive who were previously considered normotensive. Blood pressure (BP) is considered normal (<120 mmHg systolic and <80 mmHg diastolic), elevated (120-129 and <80 mmHg), stage 1 (130-139 or 80-89 mmHg), and stage 2 (≥140 or ≥90 mmHg). Out-of-office BP measurements are recommended to confirm the diagnosis of hypertension and for titra…
Early calcification patterns of the iliac arteries and their relation to the arterial structure
1972
Gross calcifications of the common iliac and internal iliac arteries represent a common finding in newborn children and infants. In both arteries, the calcific deposits regularly appear in certain areas of the arterial luminal surface only, whereas the other parts of the arterial wall remain free of gross lesions even in cases with a pronounced calcification. In the common iliac artery, the lateral wall of the vessel and the adjacent sectors of the anterior and posterior wall represent the predilection site of calcific deposits. In the internal iliac artery, the gross calcifications have been regularly demonstrated in the dorso-medial wall. The predominant localisation of the calcification …