Navigation Links
Magnets may help prevent rare complication of spinal anesthesia
Date:6/1/2012

San Francisco, CA. (June 1, 2012) An simple technique using local anesthetic mixed with magnetized "ferrofluids" may provide a new approach to preventing a rare but serious complication of spinal anesthesia, reports the June issue of Anesthesia & Analgesia, official journal of the International Anesthesia Research Society (IARS).

With further research, the magnet technique may provide a second meansin addition to gravityof preventing "high spinal block," which occurs when spinal anesthetics spread to the upper portions of the spinal cord. The preliminary studies were performed by Dr Robert H. Thiele of University of Virginia Health Sciences Center, Charlottesville.

Magnetic Technique May Permit Gravity-Defying Anesthesia

Although very rareoccurring at a rate of about 0.6 per 1,000 caseshigh spinal block is a serious complication of spinal anesthesia. It occurs when injected anesthetics travel too high in the spinal cord, interfering with the spinal cord fibers governing heart function. This can result in sharp drops in heart rate and blood pressure, with a risk of cardiac arrest and death.

Anesthesiologists currently prevent high spinal block by modifying the anesthetic dose and by positioning the patient so that gravity distributes the anesthetic to the lower portions of the spinal cord. "However, in certain instances, gravitational forces alone may not be sufficient to control block height," the researchers write. They evaluated a different approach: using magnetized anesthetic fluid and a weak magnetic field to control the spread of fluids.

Dr. Thiele and colleagues created a simple model of the spine using fluid-filled plastic tubing. They then prepared a local anesthetic solution with or without the addition of a water-based ferrofluid to magnetize the fluid. In this model, both fluids ran downward by gravity.

However, when a magnet placed outside the tubing, below the level of the needle, it halted the downward flow of magnetized fluid. In fact, when the magnet was moved, the fluid moved "uphill," against gravity. (A video demonstration can be viewed online at http://links.lww.com/AA/A377.)

Dr Thiele and coauthors believe that a similar technique using magnetized local anesthetic solution and exterior magnets could help to control the spread of spinal anesthesia during surgical procedures, thus providing a simple but effective additional safeguard against high spinal block. It might also be useful in controlling the spread of anesthetics in other situationsfor example, spinal anesthesia on one side of the body.

Of course, much more research is needed before a concept demonstrated in plastic tubing can be applied in patients. Among the questions to be answered is the safety of the magnetic fluidthe ferrofluid used in the experiments is not approved for use in humans, although magnetic particles are used in other medical treatments.

Other issues include the quality of anesthesia and practical matters related to applying a magnetic field in the operating room. Pending further study, the new magnetic technique "may allow anesthesia providers a second means of controlling block spread," the researchers write.


'/>"/>

Contact: Lisa Webb
lisa.webb@wolterskluwer.com
215-521-8319
Anesthesia and Analgesia
Source:Eurekalert

Related medicine news :

1. Magnets Might Boost Stem Cell Therapy
2. Nuclear magnetic resonance with no magnets
3. Moveable Magnets Used to Forge Gastric Bypass in Pigs
4. Vaccine May Prevent TB in People With HIV
5. Prevention Is Key Research Goal for Premature Babies, Scientists Say
6. Hormone May Prevent Aggressive Breast Cancer
7. Pet Dental Month Prime Time To Schedule Preventive Annual Cleaning For Pets
8. Botox May Prevent Some Migraines
9. Medical Nurse Training, Inc. Partners With Healthcare Companies to Develop Corporate Branded, Accredited Programs for Patient/Bed Safety and Fall Prevention/Protection
10. VIDEO from Medialink and AAFA: Asthma PSA Reinforces Prevention of Asthma Symptoms
11. Northern California Cancer Center Changes Name to Cancer Prevention Institute of California
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/26/2016)... ... , ... Brent Kasmer, a legally blind and certified personal trainer is helping to develop a ... fitness app plans to fix the two major problems leading the fitness industry today:, ... type program , They don’t eliminate all the reasons people quit their exercise ...
(Date:6/25/2016)... ... 2016 , ... Austin residents seeking Mohs surgery services, can now turn to ... Dr. Russell Peckham for medical and surgical dermatology. , Dr. Dorsey brings specialization to ... fellowship in Mohs Micrographic Surgery completed by Dr. Dorsey was under the direction of ...
(Date:6/25/2016)... ... 2016 , ... First Choice Emergency Room , the largest network of ... Medical Director of its new Mesquite-Samuell Farm facility. , “We are pleased to ... said Dr. James M. Muzzarelli, Executive Medical Director of First Choice Emergency Room. ...
(Date:6/25/2016)... ... ... On Friday, June 10, Van Mitchell, Secretary of the Maryland Department of Health and ... their exemplary accomplishments in worksite health promotion. , The Wellness at Work Awards took ... the BWI Marriott in Linthicum Heights. iHire was one of 42 businesses to receive ...
(Date:6/24/2016)... ... ... Those who have experienced traumatic events may suffer from a complex set ... drug or alcohol abuse, as a coping mechanism. To avoid this pain and suffering, ... traumatic event. , Trauma sufferers tend to feel a range of emotions, from depression, ...
Breaking Medicine News(10 mins):
(Date:6/24/2016)...   Bay Area Lyme Foundation , collaborating ... for Tick Borne Illness , Harvard Medical School ... Medicine, University of California, Berkeley, and the Veterans ... finalists of Lyme Innovation , the first ... scientists, clinicians, researchers, entrepreneurs, and investors from several ...
(Date:6/24/2016)... Research and Markets has ... 2015-2025: Applications, Technologies, Forecasts" report to their ... Electronics, Smart Skin, Structural Health Monitoring, Composite Smart ... electronics involves electronic and/or electrical components and circuits ... structures such as vehicle bodies or conformally placed ...
(Date:6/24/2016)... Dehaier Medical Systems Ltd. (NASDAQ: DHRM ) ... medical devices and wearable sleep respiratory products in ... with Hongyuan Supply Chain Management Co., Ltd. (hereinafter referred ... to develop Dehaier,s new Internet medical technology business. ... Hongyuan Supply Chain,s sales platform to reach Dehaier,s dealers ...
Breaking Medicine Technology: