Background Pre-hospital services are not well developed in Vietnam, especially the lack of a trauma system of care. Thus, the prognosis of traumatic out-of-hospital cardiac arrest (OHCA) might differ from that of other countries. Although the outcome in cardiac arrest following trauma is dismal, pre-hospital resuscitation efforts are not futile and seem worthwhile. Understanding the country-specific causes, risk, and prognosis of traumatic OHCA is important to reduce mortality in Vietnam. Therefore, this study aimed to investigate the survival rate from traumatic OHCA and to measure the critical components of the chain of survival following a traumatic OHCA in the country. Methods We performed a multicenter prospective observational study of patients (> 16 years) presenting with traumatic OHCA to three central hospitals throughout Vietnam from February 2014 to December 2018. We collected data on characteristics, management, and outcomes of patients, and compared these data between patients who died before hospital discharge and patients who survived to discharge from the hospital. Results Of 111 eligible patients with traumatic OHCA, 92 (82.9%) were male and the mean age was 39.27 years (standard deviation: 16.38). Only 5.4% (6/111) survived to discharge from the hospital. Most cardiac arrests (62.2%; 69/111) occurred on the street or highway, 31.2% (29/93) were witnessed by bystanders, and 33.7% (32/95) were given cardiopulmonary resuscitation (CPR) by a bystander. Only 29 of 111 patients (26.1%) were taken by the emergency medical services (EMS), 27 of 30 patients (90%) received pre-hospital advanced airway management, and 29 of 53 patients (54.7%) were given resuscitation attempts by EMS or private ambulance. No significant difference between patients who died before hospital discharge and patients who survived to discharge from the hospital was found for bystander CPR (33.7%, 30/89 and 33.3%, 2/6, P > 0.999; respectively) and resuscitation attempts (56.3%, 27/48, and 40.0%, 2/5, P = 0.649; respectively). Conclusion In this study, patients with traumatic OHCA presented to the ED with a low rate of EMS utilization and low survival rates. The poor outcomes emphasize the need for increasing bystander first-aid, developing an organized trauma system of care, and developing a standard emergency first-aid program for both healthcare personnel and the community.
It is increasingly being recognized that biotic ligand models (BLMs) are valuable in the risk assessment of metals in aquatic systems. The authors investigated the effect of pH, Ca, Mg, K, Na on the acute toxicity of Pb to Moina dubia, native zooplankton in lakes of Hanoi, Vietnam. Calcium, Magnesium and pH strongly in uenced acute Pb toxicity to Moina dubia. Based on this data set, a acute Pb-BLM for Moina dubia was developed according to condition of Hanoi lakes. The developed BLM was shown, in an independent validation with data on acute toxicity test on natural water sets, to be capable of predicting chronic Pb toxicity with 81.3% accuracy. The results proved that BLM can be useful tool for calculating the acute toxicity based on water-quality criteria in lake of Hanoi.
It is increasingly being recognized that biotic ligand models (BLMs) are valuable in the risk assessment of metals in aquatic systems. The authors investigated the effect of pH, Ca, Mg, K, Na on the acute toxicity of Pb to Moina dubia, native zooplankton in lakes of Hanoi, Vietnam. Calcium, Magnesium and pH strongly influenced acute Pb toxicity to Moina dubia. Based on this data set, a acute Pb-BLM for Moina dubia was developed according to condition of Hanoi lakes. The developed BLM was shown, in an independent validation with data on acute toxicity test on natural water sets, to be capable of predicting chronic Pb toxicity with 81.3% accuracy. The results proved that BLM can be useful tool for calculating the acute toxicity based on water-quality criteria in lake of Hanoi.
Introduction: Pre-hospital services are not well developed in Vietnam, especially the immature of a trauma system of care. The prognosis of traumatic out-of-hospital cardiac arrest (OHCA) might differ from that of other countries. This study aimed to investigate the survival rate from traumatic OHCA and to measure the critical components of the chain of survival following a traumatic OHCA in the country. Hypothesis: Although the outcome in cardiac arrest following trauma is dismal, pre-hospital resuscitation efforts are not futile and seem worthwhile. Understanding the country-specific causes, risk, and prognosis of traumatic OHCA is important to reduce mortality in Vietnam. Methods: We performed a multicenter prospective observational study of consecutive patients (>16 years) presenting with traumatic OHCA to 3 central hospitals in Vietnam from February 2014 to December 2018. We collected data on characteristics, management, and outcomes of patients with traumatic OHCA and compared these data between patients who died before hospital discharge and patients who survived to discharge from the hospital. Results: Of 111 eligible patients with traumatic OHCA, 92 (82.9%) were male and the mean age was 39.27 years (standard deviation: 16.38). Only 5.4% (6/111) survived to discharge from the hospital. Most cardiac arrests (62.2%; 69/111) occurred on the street or highway, 31.2% (29/93) were witnessed by bystanders, and 33.7% (32/95) were given cardiopulmonary resuscitation (CPR) by a bystander. Only 26.1% (29/111) of the patients were taken by the emergency medical services (EMS), 90% (27/30) received pre-hospital advanced airway, and 54.7% (29/53) were given resuscitation attempts by EMS or private ambulance. No significant difference between patients who died before hospital discharge and patients who survived to discharge from the hospital was found for bystander CPR (33.7%, 30/89 and 33.3%, 2/6, P>0.999; respectively) and resuscitation attempts (56.3%, 27/48, and 40.0%, 2/5, P=0.649; respectively). Conclusion: Improvements are needed in the EMS in Vietnam, such as increasing bystander first-aid and developing a trauma system of care, as well as developing a standard emergency first-aid program for both healthcare personnel and the community.
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