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
Using fragment-based approaches to discover new antibiotics
21.06.2018 | SLAS (Society for Laboratory Automation and Screening)
Scientists learn more about how gene linked to autism affects brain
19.06.2018 | Cincinnati Children's Hospital Medical Center
In a recent publication in the renowned journal Optica, scientists of Leibniz-Institute of Photonic Technology (Leibniz IPHT) in Jena showed that they can accurately control the optical properties of liquid-core fiber lasers and therefore their spectral band width by temperature and pressure tuning.
Already last year, the researchers provided experimental proof of a new dynamic of hybrid solitons– temporally and spectrally stationary light waves resulting...
Scientists from the University of Freiburg and the University of Basel identified a master regulator for bone regeneration. Prasad Shastri, Professor of...
Moving into its fourth decade, AchemAsia is setting out for new horizons: The International Expo and Innovation Forum for Sustainable Chemical Production will take place from 21-23 May 2019 in Shanghai, China. With an updated event profile, the eleventh edition focusses on topics that are especially relevant for the Chinese process industry, putting a strong emphasis on sustainability and innovation.
Founded in 1989 as a spin-off of ACHEMA to cater to the needs of China’s then developing industry, AchemAsia has since grown into a platform where the latest...
The BMBF-funded OWICELLS project was successfully completed with a final presentation at the BMW plant in Munich. The presentation demonstrated a Li-Fi communication with a mobile robot, while the robot carried out usual production processes (welding, moving and testing parts) in a 5x5m² production cell. The robust, optical wireless transmission is based on spatial diversity; in other words, data is sent and received simultaneously by several LEDs and several photodiodes. The system can transmit data at more than 100 Mbit/s and five milliseconds latency.
Modern production technologies in the automobile industry must become more flexible in order to fulfil individual customer requirements.
An international team of scientists has discovered a new way to transfer image information through multimodal fibers with almost no distortion - even if the fiber is bent. The results of the study, to which scientist from the Leibniz-Institute of Photonic Technology Jena (Leibniz IPHT) contributed, were published on 6thJune in the highly-cited journal Physical Review Letters.
Endoscopes allow doctors to see into a patient’s body like through a keyhole. Typically, the images are transmitted via a bundle of several hundreds of optical...
13.06.2018 | Event News
08.06.2018 | Event News
05.06.2018 | Event News
22.06.2018 | Materials Sciences
22.06.2018 | Earth Sciences
22.06.2018 | Life Sciences