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Pulsatile and nonpulsatile tinnitus pdf,tinnitus pronunciation british juegos,imagenes de zapatos de futbol nike 2012 - PDF Books

Author: admin | 28.11.2014 | Category: Ringing In The Ears Causes

Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Drill of the Month Developed by Michael Lindsay An Overview of Ventricular Assist Devices & Pre Hospital Management.
Student Objectives At the conclusion of this Drill Students will be able to: Define Heart Failure Define Heart Failure Define Ventricular Assist Device (VAD) and their use in treating Heart Failure Define Ventricular Assist Device (VAD) and their use in treating Heart Failure Identify types of Ventricular Assist Devices Identify types of Ventricular Assist Devices Explain the difference between Pulsatile and Nonpulsatile flow Explain the difference between Pulsatile and Nonpulsatile flow Identify hemodynamic differences in patients with a VAD Identify hemodynamic differences in patients with a VAD List VAD related complications List VAD related complications Demonstrate how to assess a patient with a VAD Demonstrate how to assess a patient with a VAD Describe how to treat VAD complications Describe how to treat VAD complications Identify VAD resources that can be utilized when caring for these patients. Heart Failure *Heart failure is a condition where the heart cannot pump enough blood throughout the body. Non-Pulsatile Continuous-flow devices Continuous-flow devices Impeller (spinning turbine-like rotor blade) propels blood continuously forward into systemic circulation. VAD Parameters Parameters for pulsatile and non pulsatile devices vary with each device model Parameters for pulsatile and non pulsatile devices vary with each device model Patients and their care givers know the expectable parameter ranges and goals for their specific device Patients and their care givers know the expectable parameter ranges and goals for their specific device Contact the VAD Coordinator at the implanting medical center, they will be your best resource when treating a VAD patient. References1.Meyns BP, Sergeant PT, Daenen WJ, Flameng WJ (1995) Left ventricular assistance with the transthoracic 24F Hemopump for recovery of the failing heart. JavaScript is currently disabled, this site works much better if you enable JavaScript in your browser.
American Journal of Physiology - Heart and Circulatory Physiology Published 1 April 2000 Vol.


Treat the patient not the monitor.A patient can be in a lethal arrhythmia and be asymptomatic. Hemodynamic performance and organ perfusion were analyzed in a heart failure model and compared to the performance of a pulsatile assist device (Medos, Aachen, Germany). Axial flow: blood leaves impeller blades in the same direction as it enters (think fan or boat motor propeller).
Electric motor or pneumatic (air) pressure collapses the chamber and forces blood into systemic circulation via the outflow cannula. Most implanted devices are LVADs only Most implanted devices are LVADs only Are quite and cannot be heard outside of the patients body.
After control measurements, left ventricular heart failure was induced by intracoronary injection of microspheres. Can be LVAD, RVAD, or BiVAD Can be LVAD, RVAD, or BiVAD First-generation devices (in use since early 1980s) First-generation devices (in use since early 1980s) Patients will have a palpable pulse and a measurable blood pressure.
Measurements were repeated during heart failure, during mechanical support with the Medos device, and during support with the new rotary blood pump.
Chest compressions can disrupt the implanted equipment causing bleeding and deathDo not initiate chest compressions unless instructed by a physician or VAD coordinator.


Cardiac output, arterial blood pressure, left and right atrial pressure, and first derivative of the left ventricular pressure were all significantly changed during heart failure. These parameters were restored by both types of mechanical support to exactly the same level. The Patient may have a weak, irregular, or non-palpable pulse The Patient may have a weak, irregular, or non-palpable pulse The Patient may have a narrow pulse pressure and may not be measurable with automated blood pressure monitors. There was no difference in organ perfusion with the diagonal pump compared with the pulsatile Medos device.
Hemodynamic status and organ perfusion due to left ventricular failure are restored in exactly the same way by a nonpulsatile miniature rotary blood pump and a pneumatic pulsatile assist device (Medos). Rotary blood pumps can be miniaturized and are therefore more attractive than pulsatile displacement pumps for long-term mechanical support.



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