Team of researchers lay the foundation for new resuscitation guidelines for severely hypothermic patients in cardiac arrest
The general rule for treatment of patients in cardiac arrest is that once resuscitation measures have begun, they must be continued uninterruptedly until the patient shows signs of life or is pronounced dead. A new study has shown that in the specific case of severely hypothermic victims with a core body temperature below 28°C, resuscitation can be delayed and periodically interrupted for short intervals during transportation in the mountains without jeopardising survival.
The study has just been published in the medical journal “Resuscitation” and was conducted by Cumbrian Mountain Rescue doctors, the Glenfield Hospital, Leicester in the UK, EURAC in Italy, the Medical University of Innsbruck in Austria and Stanford University in California, USA.
In remote and mountain areas rescuers are often faced with the predicament that uninterrupted resuscitation is simply not possible during transportation of cardiac arrest patients to the hospital. In these cases cardiopulmonary resuscitation (CPR) may be interrupted at the scene or during evacuation.
In recent years, however, there have been some case reports in the Alps of severely hypothermic accident victims in cardiac arrest who have survived without any permanent damage despite several interruptions of chest compressions. Rescue services have been seeking urgent clarification of the circumstances when this may apply, as current recommendations specify uninterrupted resuscitation under all circumstances.
The authors did a literature review that has led to the conclusion that short interruptions of CPR for the purposes of transportation can be made during resuscitation with severely hypothermic patients. Low body temperature preserves the brain, enabling it to withstand cardiac arrest for considerably longer than at normal body temperature. The researchers looked at data from cardiac and vascular surgery, as deliberately lowering the patient’s body temperature during the surgery is a recognised technique.
Under this induced deep hypothermia, surgeons are able to briefly stop the heart while performing procedures on the heart or large vessels close to the heart without increasing the risk of permanent brain damage. “We have carried out a comprehensive case analyses in this study and have extended what we know from cardiovascular surgery to severe accidental hypothermia.
Based on the results, we propose a structured protocol that will enable rescuers and emergency doctors to interrupt CPR for defined periods of time in severely hypothermic patients so that patients can be moved,” explained Dr Les Gordon. In practice, this means that if severely hypothermic cardiac arrest patients with body temperature below 28°C need to be evacuated from difficult terrain and continuous resuscitation is not possible, it is justified to alternate five minutes of CPR with five minutes of transportation and continue this pattern until continuous resuscitation can be started.
This facilitates rescue and transportation of the patient to a hospital with extracorporeal life support for rewarming without having to abandon potentially life-saving resuscitation attempts.
The results of the study may be the first step in a paradigm shift in current rescue guidelines. In the course of this year these proposals may be incorporated into the new guidelines issued by the International Commission for Alpine Rescue (ICAR MEDCOM) and the European Resuscitation Council (ERC).
The authors were Dr Les Gordon from Cumbrian Mountain Rescue (UK), Dr Peter Paal from the Medical University of Innsbruck (Austria), Dr John Ellerton from Cumbrian Mountain Rescue (UK), Dr Hermann Brugger from the EURAC Institute of Mountain Emergency Medicine (I), Dr. Giles Peek from Glenfield Hospital Leicester (UK) and Dr Ken Zafren from Stanford University (USA).
Laura Defranceschi | idw - Informationsdienst Wissenschaft
Researchers release the brakes on the immune system
18.10.2017 | Rheinische Friedrich-Wilhelms-Universität Bonn
Norovirus evades immune system by hiding out in rare gut cells
12.10.2017 | University of Pennsylvania School of Medicine
University of Maryland researchers contribute to historic detection of gravitational waves and light created by event
On August 17, 2017, at 12:41:04 UTC, scientists made the first direct observation of a merger between two neutron stars--the dense, collapsed cores that remain...
Seven new papers describe the first-ever detection of light from a gravitational wave source. The event, caused by two neutron stars colliding and merging together, was dubbed GW170817 because it sent ripples through space-time that reached Earth on 2017 August 17. Around the world, hundreds of excited astronomers mobilized quickly and were able to observe the event using numerous telescopes, providing a wealth of new data.
Previous detections of gravitational waves have all involved the merger of two black holes, a feat that won the 2017 Nobel Prize in Physics earlier this month....
Material defects in end products can quickly result in failures in many areas of industry, and have a massive impact on the safe use of their products. This is why, in the field of quality assurance, intelligent, nondestructive sensor systems play a key role. They allow testing components and parts in a rapid and cost-efficient manner without destroying the actual product or changing its surface. Experts from the Fraunhofer IZFP in Saarbrücken will be presenting two exhibits at the Blechexpo in Stuttgart from 7–10 November 2017 that allow fast, reliable, and automated characterization of materials and detection of defects (Hall 5, Booth 5306).
When quality testing uses time-consuming destructive test methods, it can result in enormous costs due to damaging or destroying the products. And given that...
Using a new cooling technique MPQ scientists succeed at observing collisions in a dense beam of cold and slow dipolar molecules.
How do chemical reactions proceed at extremely low temperatures? The answer requires the investigation of molecular samples that are cold, dense, and slow at...
Scientists from the Max Planck Institute of Quantum Optics, using high precision laser spectroscopy of atomic hydrogen, confirm the surprisingly small value of the proton radius determined from muonic hydrogen.
It was one of the breakthroughs of the year 2010: Laser spectroscopy of muonic hydrogen resulted in a value for the proton charge radius that was significantly...
17.10.2017 | Event News
10.10.2017 | Event News
10.10.2017 | Event News
20.10.2017 | Information Technology
20.10.2017 | Materials Sciences
20.10.2017 | Interdisciplinary Research