Resuscitation
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Hypoxic-ischemic brain injury is the main cause of death and disability of comatose patients after cardiac arrest. Early and reliable prognostication is challenging. Common prognostic tools include clinical neurological examination and electrophysiological measures. Brain imaging is well established for diagnosis of focal cerebral ischemia but has so far not found worldwide application in this patient group. ⋯ CT derived grey-white matter ratio and MRI based measures of diffusivity and connectivity hold promise to improve outcome prediction after cardiac arrest. Prospective validation studies in a multivariable approach are needed to determine the additional value for the individual patient.
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Multicenter Study
Hospitals with More-active Participation in Conducting Standardized In-situ Mock Codes have Improved Survival After In-hospital Cardiopulmonary Arrest.
Why is this important?
In-hospital cardiac arrest (IHCA) training is an important component of both foundational and continuing medical education. Nonetheless patient survival after IHCA continues to vary across institutions, making it a priority for improvement.
What did they do?
Josey and team set out to identify whether greater hospital use of in-situ AHCI drills (‘in-situ mock codes’ - ISMC) was associated with improved IHCA survival. They measured both hospital-level simulation participation and IHCA discharge survival rates across 26 hospitals in their US multi-state non-profit health system.
And they found?
Hospitals with more active in-hospital cardiac arrest simulation training also had better IHCA survival (43% vs 32%, OR 0.62), even after adjusting for case-mix and acuity.
It is reasonable to conclude that better in-hospital code training leads to better basic & advanced life support and thus better IHCA survival – suggested, for example, by their observation of shorter time to defibrillation during arrest drills among high participation hospitals.
In fact they extraopated that each additional 1.1 drill/100 beds/year equated with one extra life saved. Interestingly the benefit of ISMC held up for large and medium-sized hospitals, but not small hospitals (=< 25 beds).
Be smart
Whether these results represent a direct casual effect of simulation training to improve survival, or an indirect effect of hospital safety culture on both simulation participation and patient survival, it is nonetheless an important result.
Plus a great example of studying a meaningful outcome (survival to discharge) instead of surrogate markers often employed in resuscitation and simulation research.
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Comparative Study
Comparison of manual pulse palpation, cardiac ultrasonography and Doppler ultrasonography to check the pulse in cardiopulmonary arrest patients.
For health professionals, the absence of pulse checked by manual palpation is a primary indicator for initiating chest compressions in patients considered to have cardiopulmonary arrest (CA). However, using a pulse check to evaluate perfusion during CA may be associated with some risks of its own. Our objective was to compare the efficiency of cardiac ultrasonography (CUSG), Doppler ultrasonography (DUSG), and manual pulse palpation methods to check the pulse in CA patients. ⋯ The use of real-time CUSG during resuscitation provides a substantial contribution to the resuscitation team. CUSG will allow earlier and more accurate detection of pulse than manual pulse palpation and DUSG.
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To determine the timing and modes of death of children admitted to a pediatric critical care unit (PICU) of a tertiary care center after an out-of-hospital cardiac arrest (OHCA). ⋯ Neurologic injury was the most common mode of death post-resuscitation care OHCA after in a tertiary care center PICU. Neurologic prognostication impacts the outcome of a large proportion of patients after OHCA, and further studies are warranted to improve its reliability.
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Identifying reversible causes of cardiac arrest is challenging. The diagnosis of pulmonary embolism is often missed. Pulmonary embolism increases alveolar dead space resulting in low end-tidal CO2 (EtCO2) relative to arterial CO2 (PaCO2) tension. Thus, a low EtCO2/PaCO2 ratio during resuscitation may be a sign of pulmonary embolism. ⋯ A low EtCO2/PaCO2 ratio during cardiopulmonary resuscitation suggests pulmonary embolism.