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VCU Researchers Develop And Patent Novel Method For Measuring Blood Pressure In The Heart
Researchers at Virginia Commonwealth University Medical Center have developed and patented a new, noninvasive means of measuring blood pressure inside the heart.
The measurement to determine central venous pressure (CVP) -- a reading
that gives doctors important information about the volume of blood
circulation and how well the heart is pumping -- now can be done using a
simple blood pressure cuff and special electrodes connected to a computer.
The new technique, developed by researchers in VCU's Reanimation
Engineering Shock Center (VCURES), determines CVP by monitoring blood
volume changes in the arm in response to externally applied circumferential
pressure to the brachial vein -- the large vessel in the arm that carries
blood between the elbow and shoulder back to the heart.
Doctors space four monitoring electrodes along the arm and apply a
blood pressure cuff on top of two of the electrodes near the shoulder. Over
the course of a minute, the cuff is partially inflated and deflated
allowing the monitoring electrodes to detect changes in blood volume and
send data to a computer that determines the CVP.
Monitoring CVP of a critically ill or injured patient can be essential
in determining how well blood is circulating to vital organs and if the
heart is failing.
Until now, doctors had to thread a catheter through the neck or chest
to a point near the right atrium -- the first of the heart's four pumping
chambers -- to accurately determine CVP, a time consuming procedure that
can lead to complications including infection, punctured lungs, bleeding
and arrhythmias.
In a recent study published in the journal Resuscitation, VCU
investigators used the method to measure CVP in critically ill or injured
patients who already were undergoing CVP measurement using the conventional
catheter technique. The investigators found the new noninvasive method was
as accurate and precise as directly measuring CVP from the catheter.
"The ability to accurately monitor CVP in a safer, more efficient,
noninvasive way will have tremendous patient benefits and enable health
care workers to make more rapid treatment decisions," according to Kevin
Ward, M.D., associate professor in the Department of Emergency Medicine at
the VCU Medical Center, who co-authored the study and is a co-inventor of
the technique. "This should ultimately lead to improved patient outcomes
and fewer complications."
Other members of the VCURES team include Hakam Tiba, M.D., and R. Wayne
Barbee, Ph.D., VCU Department of Emergency Medicine; James Arrowood, M.D.,
Department of Internal Medicine; Rao Ivatury, M.D., and Russell Hummel,
Department of Critical Care Surgery; and Bruce Spiess, M.D., Department of
Anesthesiology, and E. Kate Proffitt, Department of Biomedical Engineering.
VCURES is a multidisciplinary center dedicated to improving survival from
critical illness and injury. For more on VCURES visit
http://www.vcures.org.
the Virginia Commonwealth University Medical Center
The Virginia Commonwealth University Medical Center is one of the
nation's leading academic medical centers and stands alone as the only
academic medical center in Central Virginia. The medical center includes
the 780-bed MCV Hospitals and outpatient clinics, MCV Physicians -- a
600-physician-faculty group practice, and the health sciences schools of
Virginia Commonwealth University. The VCU Medical Center, through its VCU
Health System, offers state-of-the art care in more than 200 specialty
areas, many of national and international note, including organ
transplantation, head and spinal cord trauma, burn healing and cancer
treatment. The VCU Medical Center is the site for the region's only Level 1
Trauma Center. As a leader in healthcare research, the VCU Medical Center
offers patients the opportunity to choose to participate in programs that
advance evolving treatment, such as those sponsored by the National Cancer
Institute through VCU's Massey Cancer Center, Virginia's first
NCI-designated cancer center. The VCU Medical Center's academic mission is
supported by VCU's health sciences schools of medicine, allied health,
dentistry, pharmacy and nursing.
Virginia Commonwealth University Medical Center
http://www.vcu.edu
http://www.vcures.org
Cercetatori VCU dezvolte ºi Patent Novel Metoda de masurare a tensiunii arteriale în inima - VCU Researchers Develop And Patent Novel Method For Measuring Blood Pressure In The Heart - articole medicale engleza - startsanatate