Navigation Links
Clot-dissolving agent may be beneficial in treatment of severe frostbite

A preliminary study suggests that a blood clot-dissolving medication that is administered to some patients following a stroke or heart attack may help to reduce the risk of amputation following severe frostbite, according to a report in the June issue of Archives of Surgery, one of the JAMA/Archives journals.

Frostbite treatment has remained essentially the same for the past 25 years, according to background information in the article. “Today, traditional therapy consists of tissue rewarming, prolonged watchful waiting and often delayed amputation,” the authors write. “While many other areas of burns, trauma and critical care have advanced significantly in their treatment modalities, the saying ‘Frostbite in January, amputate in July’ is still relevant today.”

Kevin J. Bruen, M.D., and colleagues at the University of Utah, Salt Lake City, studied the anti-clotting agent tissue plasminogen activator (tPA) for the treatment of frostbite beginning in 2001. Patients who were admitted with severe frostbite underwent imaging studies to assess blood flow to the affected limb. From 2001 to 2006, six patients with abnormal blood flow on angiography received tPA within 24 hours of severe frostbite injury. These individuals were compared with 25 frostbite patients treated from 1995 to 2006 who did not receive tPA, plus one who received tPA more than 24 hours after injury.

Among the six patients who received tPA within 24 hours of injury, six of 59 (10 percent) affected fingers or toes were amputated, compared with 97 of 234 (41 percent) among those who did not receive tPA. “Moreover, no proximal [closer to the body than the fingers or toes] amputations were required in the patients who received tPA within 24 hours in our series,” the authors write. “The control group underwent 14 proximal amputations, including five below the knee. The preservation of limbs, which maximizes patient functional outcome, is perhaps the greatest benefit conferred by u se of tPA in frostbite injury.”

The researchers suspect tPA helps reduce the injury caused when frozen skin is warmed again. Inflammation during thawing typically stimulates clotting that blocks small blood vessels, leading to cell death. Because tPA reverses this clotting, blood flow is restored before permanent damage is done.

“Based on the dramatic improvements in perfusion [blood flow] and reduction in rates of amputations when tPA was administered within 24 hours of frostbite injury, we anticipate the continued use of tPA in patients who are admitted to our institution with acute frostbite,” the authors write. “Candidates for this therapy are patients who present with severe frostbite as suggested by full-thickness tissue involvement, hemorrhagic blisters and abnormal perfusion on either angiogram or pyrophosphate scanning. Initiation of therapy within 24 hours of rewarming also appears to be necessary. Exclusion criteria would include superficial frostbite, involvement of the tips of the distal phalanges and contraindications to tPA, including concurrent trauma, neurological impairment or recent surgery or hemorrhage.”

“Additional studies are warranted to confirm our findings and to determine the best methods of assessing tissue damage and administering thrombolytics [anti-clotting drugs] in terms of timing, duration and route,” they conclude.
'"/>

Source:JAMA and Archives Journals


Related biology news :

1. New drug shows promise as powerful anticancer agent
2. To control germs, scientists deploy tiny agents provocateurs
3. Gadonanotubes greatly outperform existing MRI contrast agents
4. Tiny avalanche photodiodes target bioterrorism agents
5. Software agents could help unmask reality of disease clusters
6. Mouse study: New muscle-building agent beats all previous ones
7. Chemical warfare agent detection technology used to treat lung disease
8. Got inexpensive contrast agent? Milk plays new role in imaging
9. Trojan Horse agent halts bone metastasis in mice
10. Failed experiment yields a biocontrol agent that doesnt trigger antibiotic resistance
11. Gallium: A new antibacterial agent?

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:4/26/2016)... 27, 2016 Research and ... Biometrics Market 2016-2020"  report to their offering.  , ... The analysts forecast the global multimodal biometrics ... during the period 2016-2020.  Multimodal biometrics ... such as the healthcare, BFSI, transportation, automotive, and ...
(Date:4/15/2016)... 15, 2016 Research and ... Biometrics Market 2016-2020,"  report to their offering.  , ... , ,The global gait biometrics market is expected ... the period 2016-2020. Gait analysis generates ... be used to compute factors that are not ...
(Date:3/31/2016)... 2016   LegacyXChange, ... "Company") LegacyXChange is excited to release its ... to be launched online site for trading 100% guaranteed ... will also provide potential shareholders a sense of the ... an industry that is notorious for fraud. The video ...
Breaking Biology News(10 mins):
(Date:6/24/2016)... ... 2016 , ... Researchers at the Universita Politecnica delle Marche in Ancona combed ... pleural mesothelioma. Their findings are the subject of a new article on the Surviving ... signposts in the blood, lung fluid or tissue of mesothelioma patients that can help ...
(Date:6/23/2016)... 23, 2016 /PRNewswire/ - FACIT has announced the ... biotechnology company, Propellon Therapeutics Inc. ("Propellon" or ... of a portfolio of first-in-class WDR5 inhibitors for ... as WDR5 represent an exciting class of therapies, ... medicine for cancer patients. Substantial advances have been ...
(Date:6/23/2016)... -- The Prostate Cancer Foundation (PCF) is pleased to announce 24 new ... prostate cancer. Members of the Class of 2016 were selected from a pool ... Read More About the Class of 2016 PCF Young Investigators ... ... ...
(Date:6/23/2016)... ... June 23, 2016 , ... STACS DNA Inc., the sample tracking software company, ... Crime Laboratory, has joined STACS DNA as a Field Application Specialist. , “I ... President and COO of STACS DNA. “In further expanding our capacity as a scientific ...
Breaking Biology Technology: