[External Compressible Zip
Everardo Laboy
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External aortic compression has been investigated as a treatment for non-compressible truncal haemorrhage in trauma patients. We sought to systematically gather and tabulate the available evidence around external aortic compression. We were specifically interested in its ability to achieve hemostasis and aid in resuscitation of traumatic arrest and severe shock and to consider physiological changes and adverse effects. A scoping review approach was chosen due to the highly variable existing literature. We were guided by the Preferred Reporting Items for Systematic Reviews and Meta-Analyses, using the specific extension for scoping reviews. Searches were done on PubMed and Scopus databases in October 2020. We found that a range of studies have investigated external aortic compression in a variety of settings, including case reports and small case series, porcine hemorrhage models and effects on healthy volunteers. External aortic compression for postpartum hemorrhage in a single center provided some evidence of effectiveness. Overall the level of evidence is limited, however, external aortic compression does appear able to achieve cessation of distal blood flow. Furthermore, it appears to improve many relevant physiological parameters in the setting of hypovolemic shock. Application for more than 60 minutes appears to cause increasingly problematic complications. In conclusion we find that the role of external aortic compression warrants further research. The intervention may have a role as a bridge to definitive treatment of noncompressible truncal haemorrahge.
Fitting up to men's size 9 and women's size 8, explore our compressible shoe bag designed to help you optimize storage space in your travel bag and keep the rest of your pack squeaky clean. Learn More
We cringe every time we have to pack our dirty shoes next to our clean clothes. But with our Compressible Shoe Bags, cringing is a thing of the past. The secret to these handy bags is the interior divider that keeps your shoes from rubbing against each other and the exterior compression straps that allow you to efficiently store your shoes heel to toe. Fits up to W9 & M7.5 shoes. Learn More
I have a lot of "traditional" shoe bags but this compressible one from Knack is a game-changer. Much easier to get my shoes in and out and the compression factor is fantastic. According to the size chart, both my husband and I bought the large size but found it way too large for our everyday shoes and sneakers (the medium size fit great for those types of shoes for us: I wear a women's size 10, my husband wears a mens size 11.5). We did kept one of the large sized bags in case we wanted to ever pack our big soled hiking trail shoes boots, or could be used for other items (blow dryer?).
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I have around 80 GB of data I need copy to an external hard drive. Would it be faster to compress all the files first and then copy over? Or would the time it takes to compress and decompress take longer that the amount of copying time it will save?
In any case, getting any significant compression ratio incurs heavy amounts of CPU time. You can get a rough estimate at how badly it will cost you by a simple experiment: Just try compressing any 1 GB file with 7zip at the highest settings and measure the time. Then measure how long it takes to decompress the result.
Yes and no. It really depends on what you are compressing and what is the method of compression. 80GB of data might be worth compressing IF it was to remain in that compressed state. If you are looking to have quick access to that data then no, compression would only hinder that capability. Really compression is not so much software as it is hardware since it depends on the performance of server or computer you are compressing on.
This depends totally on the type of data you are backing up and the device you are backing up too. I have a large quantity of highly compressible data which I back up to a USB 2 drive on a regular basis. Compressing the data greatly speeds up the transfer because USB 2 is substantially slower then the the time it takes to compress the data, and the saving is large.
The type of compression you use also needs to be factored in, as well as your CPU. Zip and similar are relatively lightweight, so compressing is fast, however some compression algorythms are much more CPU intensive.
Answer for you: no.It is only faster if you only leave one commpressed file in compressed format on external file. But if you decompress file on the same hard, it will be slow.By the way, what files do you have, and how much files do you have?
Early haemorrhage control and minimizing the time to definitive care have long been the cornerstones of therapy for patients exsanguinating from non-compressible haemorrhage (NCH) after penetrating injuries, as only basic treatment could be provided on scene. However, more recently, advanced on-scene treatments such as the transfusion of blood products, resuscitative thoracotomy (RT) and resuscitative endovascular balloon occlusion of the aorta (REBOA) have become available in a small number of pre-hospital critical care teams. Although these advanced techniques are included in the current traumatic cardiac arrest algorithm of the European Resuscitation Council (ERC), published in 2021, clear guidance on the practical application of these techniques in the pre-hospital setting is scarce. This paper provides a scoping review on how these advanced techniques can be incorporated into practice for the resuscitation of patients exsanguinating from NCH after penetrating injuries, based on available literature and the collective experience of several helicopter emergency medical services (HEMS) across Europe who have introduced these advanced resuscitation interventions into routine practice.
While minimizing the time to definitive care remains a priority, advanced pre-hospital interventions such as blood product administration [10, 11], resuscitative thoracotomy (RT) [12] and resuscitative endovascular balloon occlusion of the aorta (REBOA) [13] are now available in some pre-hospital critical care teams to treat patients with penetrating injuries. These techniques offer the potential to initiate earlier advanced trauma resuscitation in the pre-hospital phase of care and thereby have the potential to prevent death from pre-hospital exsanguination [14].
The revised traumatic cardiac arrest algorithm of the European Resuscitation Council (ERC) published in 2021 [15] mentions that interventions such as REBOA and RT can be considered to address potentially reversible causes of a traumatic cardiac arrest (in parallel to other interventions). However, specific guidance on when to deploy these techniques in the pre-hospital setting is currently lacking, leaving pre-hospital clinicians with complex decisions under significant time pressure and high levels of uncertainty: available information is often limited, anatomical injuries are often unknown, and various (non) technical and logistical challenges must be overcome. Furthermore, deployment of these techniques is not without risk, as potential complications are numerous and can be life threatening [16, 17].
This paper aims to provide a scoping review on when advanced techniques such as blood product transfusion, RT and REBOA can be utilized in the pre-hospital setting for the resuscitation of patients with NCH due to non-ballistic penetrating injuries, based on available literature and the collective experience of several helicopter emergency medical services (HEMS) across Europe who have introduced these advanced resuscitation interventions into routine practice.
The primary treatment goal for all patients with NCH in the pre-hospital setting is to maintain or restore adequate coronary (and therefore cerebral) perfusion until definitive (in-hospital) haemorrhage control can be achieved. Blood product transfusion, RT and REBOA can be used to facilitate cardiac resuscitation to achieve this goal in patients who are otherwise unlikely to survive the pre-hospital phase of care.
Options for cardiac resuscitation of patients in traumatic cardiac arrest (TCA) due to non-compressible haemorrhage from non-ballistic penetrating injuries: Addition to the 2021 ERC guidelines [15] on the treatment of patients in traumatic cardiac arrest (original figure adapted with permission)
At all times, decision-making must continue in an efficient manner: time should not be wasted establishing monitoring for this purpose if it is not already in place. If there is any doubt about timings, a rapid point of care ultrasonography (POCUS) (to confirm if organized cardiac activity is present) can contribute to decision-making when there is reasonable doubt about the time of arrest in the absence of an organized rhythm, but no time should be wasted doing this when an organized rhythm is present [29].
Current ERC guidelines [15] suggest that both RT and REBOA can be considered to facilitate cardiac resuscitation in patients with a TCA from NCH. The decision whether to proceed with RT or REBOA is dependent on available resources and training, but also on the mechanism of the injury and anatomical location of the injuries (Fig. 1).
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