Echocardiographic Measures of Diastolic Function Are Preload Dependent during Triggered Positive Pressure Ventilation : A Controlled Crossover Study in Healthy Subjects
المؤلفون المشاركون
Frederiksen, Christian Alcaraz
Juhl-Olsen, Peter
Sloth, Erik
Jakobsen, Carl-Johan
Hermansen, Johan Fridolf
المصدر
Critical Care Research and Practice
العدد
المجلد 2012، العدد 2012 (31 ديسمبر/كانون الأول 2012)، ص ص. 1-8، 8ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2012-09-25
دولة النشر
مصر
عدد الصفحات
8
التخصصات الرئيسية
الملخص EN
Background.
The use of echocardiography in intensive care settings impacts decision making.
A prerequisite for the use of echocardiography is relative resistance to changes in volume status and levels of positive pressure ventilation (PPV).
Studies on indices of diastolic function report conflicting results with regard to dependence on volume status.
Evidence is scarce on PPV.
Methods.
Ten healthy subjects were exposed to 6 levels of positive end-expiratory pressure (PEEP) and pressure support (PS) following a baseline reading.
All ventilator settings were performed at three positions: horizontal, reverse-Trendelenburg, and Trendelenburg.
Echocardiography was performed throughout.
Results.
During spontaneous breathing, early diastolic transmitral velocity (E) changed with positioning (P<0.001), whereas early diastolic velocity of the mitral annulus (e′) was independent (P=0.263).
With PPV, E and e′ proved preload dependent (P values<0.001).
Increases in PEEP, PS, or a combination influenced E and e′ in reverse-Trendelenburg- and horizontal positions, but not in the Trendelenburg position.
Discussion.
The change towards preload dependency of e′ with PPV suggests that PPV increases myocardial preload sensitivity.
The susceptibility of E and e′ to preload changes during PPV discourages their use in settings of volume shifts or during changes in ventilator settings.
Conclusion.
Positioning and PPV affect E and e′.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Juhl-Olsen, Peter& Frederiksen, Christian Alcaraz& Hermansen, Johan Fridolf& Jakobsen, Carl-Johan& Sloth, Erik. 2012. Echocardiographic Measures of Diastolic Function Are Preload Dependent during Triggered Positive Pressure Ventilation : A Controlled Crossover Study in Healthy Subjects. Critical Care Research and Practice،Vol. 2012, no. 2012, pp.1-8.
https://search.emarefa.net/detail/BIM-491804
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Juhl-Olsen, Peter…[et al.]. Echocardiographic Measures of Diastolic Function Are Preload Dependent during Triggered Positive Pressure Ventilation : A Controlled Crossover Study in Healthy Subjects. Critical Care Research and Practice No. 2012 (2012), pp.1-8.
https://search.emarefa.net/detail/BIM-491804
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Juhl-Olsen, Peter& Frederiksen, Christian Alcaraz& Hermansen, Johan Fridolf& Jakobsen, Carl-Johan& Sloth, Erik. Echocardiographic Measures of Diastolic Function Are Preload Dependent during Triggered Positive Pressure Ventilation : A Controlled Crossover Study in Healthy Subjects. Critical Care Research and Practice. 2012. Vol. 2012, no. 2012, pp.1-8.
https://search.emarefa.net/detail/BIM-491804
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-491804
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
أضخم قاعدة بيانات عربية للاستشهادات المرجعية للمجلات العلمية المحكمة الصادرة في العالم العربي
تقوم هذه الخدمة بالتحقق من التشابه أو الانتحال في الأبحاث والمقالات العلمية والأطروحات الجامعية والكتب والأبحاث باللغة العربية، وتحديد درجة التشابه أو أصالة الأعمال البحثية وحماية ملكيتها الفكرية. تعرف اكثر