Sökning: "shunt group"

Visar resultat 1 - 5 av 22 avhandlingar innehållade orden shunt group.

  1. 1. Hydronic Heating Systems The Effect of Design on System Sensitivity

    Författare :Anders Trüschel; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; shunt group; controllability; district heating; room temperature; air heater; heating coil; thermal power output; deviations; water return temperature; valve group; hydronic heating; radiator system; P-band;

    Sammanfattning : This thesis starts from the recognition that a hydronic heating system can be optimised, but can never be totally perfect. Sooner or later, in practice, deviations - caused by one or more components having slightly different characteristics or settings than they are assumed or supposed to have - arise. LÄS MER

  3. 2. Clinical evaluation of an adjustable cerebrospinal fluid shunt valve

    Författare :Göran Zemack; Neurokirurgi; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; orthopaedics; traumatology; Kirurgi; ortopedi; traumatologi; Surgery; Cost analysis; Codman Hakim programmable valve; Pressure adjustable shunt valve; Cerebrospinal fluid shunt; Idiopathic intracranial hypertension; Hydrocephalus; Arachnoid cyst;

    Sammanfattning : Introduction: Shunting systems are implanted for draining cerebrospinal fluid to treat hydrocephalus, intracranial cysts, and idiopathic intracranial hypertension. Most shunt systems include a valve which regulates drainage. A differential pressure valve opens when intracranial pressure exceeds the valve’s opening pressure. LÄS MER

  4. 3. Gait Characteristics, Physical Activity and Subjective Outcome after Shunt Surgery in Normal Pressure Hydrocephalus

    Författare :Johanna Rydja; Fredrik Lundin; Petra Pohl; Mats Tullberg; Erika Franzén; Linköpings universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Normal pressure hydrocephalus; Gait; Physical activity; Subjective outcome; Shunt surgery;

    Sammanfattning : Background  Idiopathic normal pressure hydrocephalus (iNPH) is a common but under-diagnosed disease among the elderly. The condition is characterised by gait disturbance, postural instability, cognitive decline and incontinence, caused by accumulated cerebrospinal fluid within the central nerve system. LÄS MER

  5. 4. Prognosis and clinical outomes in stroke patients with transcatheter closure of an atrial shunt

    Författare :Alexia Karagianni; Göteborgs universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Atrial shunt; cryptogenic stroke; patent foramen ovale; transcatheter intervention; cerebrovascular event; residual shunting;

    Sammanfattning : Background: The percutaneous transcatheter closure of a patent foramen ovale (PFO) after a cryptogenic cerebrovascular event (CVE) has been performed for more than two decades. In contrast with previous randomized studies, recent randomized studies support the closure of the PFO after a cryptogenic CVE in preference to medical treatment alone. LÄS MER

  7. 5. Treatment of Right Ventricular Failure through Partial Volume Exclusion : An Experimental Study

    Författare :Per Vikholm; Laila Hellgren; Lund Lars; Uppsala universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Right Heart Failure; Left Ventricular Assist Device; Glenn shunt; Thorax Surgery; Thoraxkirurgi;

    Sammanfattning : Implantation of a left ventricular assist device (LVAD) is a potential treatment in terminal heart failure. Right ventricular (RV) failure is a severe complication in these patients and sometimes requires additional placement of a right ventricular assist device (RVAD). LÄS MER