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Opis: Objectives: Dual dispatch early defibrillation in out-of-hospital cardiac arrest (OHCA) victims provided by firefighters in addition to Emergency medical services (EMS) has proven to increase rate of return of spontaneous circulation (ROSC) and thus survival in the metropolitan or suburban areas whereas the data in rural areas are scarce. Methods: This was a retrospective observational cohort study of EMS resuscitated OHCA victims in regions with dual dispatch of volunteer firefighters as first responders (intervention group). Historical group was based on all OHCAs occurring in these regions before the implementation of first responders (EMS response only). Multivariate logistic regression with following variables: intervention, age, gender, witnessed status, bystander cardiopulmonary resuscitation (CPR), first rhythm and etiology were used to control for confounding factors affecting ROSC. Results: A total of 312 OHCAs were included in the study (historical group, n = 115 and intervention group, n = 197). Median time to arrival of first help shortened significantly for all patients, patients with ROSC and patients with Cerebral Performance Category 1/2 (CPC 1/2) in intervention vs historical group (8 vs 12 min, p < 0.001; 7.5 vs 11 min, p = 0.002; 7 vs 10 min, p = 0.011; respectively). The proportion of patients with ROSC, 30-day survival and CPC 1/2 at hospital discharge remained unchanged in intervention vs historical group (21% vs 23%, p = 0.808; 7% vs 6%, p = 0.914; 6% vs 3%, p = 0.442; respectively). The logistic regression model of adjustment confirms the absence of improvement in the ROSC rate after the implementation of first responders. Conclusions: Introduction of a dual dispatch of local first responders in addition to EMS in cases of OHCA significantly shortened response times. However, reduced response times were not associated with better survival outcomes.
Ključne besede: automated external defibrillator, out-of-hospital cardiac arrest, first responder, survival rate, sudden cardiac death, cardiopulmonary resuscitation, firefighters
Objavljeno v DKUM: 12.07.2024; Ogledov: 105; Prenosov: 9
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Opis: Background and Objectives: An effective strategy for cardiopulmonary resuscitation should be based on tissue perfusion. Our primary aim was to determine the association between capillary lactate values and initial rhythm as well as the probability of the return of spontaneous circulation in out-of-hospital cardiac arrest patients. Materials and Methods: This prospective observational cohort study included all patients with non-traumatic out-of-hospital cardiac arrest, older than 18 years, resuscitated by a prehospital emergency medical team between April 2020 and June 2021. Capillary lactate samples were collected at the time of arrival and every 10 min after the first measurement until the time of the return of spontaneous circulation (ROSC) or, if ROSC was not achieved, at the time of declaring death on the scene. Results: In total, 83 patients were enrolled in the study. ROSC was achieved in 28 patients (33.7%), 21 were admitted to hospital (26.3%), and 6 (7.23%) of them were discharged from hospital. At discharge, all patients had Cerebral Performance Category Scale 1 or 2. Initial capillary lactate values were significantly higher in patients with a non-shockable rhythm compared to the group with a shockable rhythm (9.19 ± 4.6 versus 6.43 ± 3.81; p = 0.037). A significant difference also persisted in a second value taken 10 min after the initial value (10.03 ± 5,19 versus 5.18 ± 3.47; p = 0.019). Capillary lactate values were higher in the ROSC group and non-ROSC group at the time of restored circulation (11.10 ± 6.59 and 6.77 ± 4.23, respectively; p = 0.047). Conclusions: Capillary lactate values are significantly higher in patients with a non-shockable first rhythm in out-of-hospital cardiac arrest (OHCA). There is also a significantly different rise in capillary lactate levels in patients with ROSC.
Ključne besede: cardiopulmonary resuscitation, out-of-hospital cardiac arrest, lactate, return of spontaneous circulation
Objavljeno v DKUM: 16.04.2024; Ogledov: 156; Prenosov: 15
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Opis: Introduction: An increasing body of evidence from laboratory and clinical studies suggests that vasopressin may represent a promising alternative vasopressor for use during cardiac arrest and resuscitation. Current guidelines for cardiopulmonary resuscitation recommend the use of adrenaline (epinephrine), with vasopressin considered only as a secondary option because of limited clinical data. Method: The present study was conducted in a prehospital setting and included patients with ventricular fibrillation or pulseless ventricular tachycardia undergoing one of three treatments: group I patients received only adrenaline 1 mg every 3 minutes; group II patients received one intravenous dose of arginine vasopressine (40 IU) after three doses of 1 mg epinephrine; and patients in group III received vasopressin 40 IU as first-line therapy. The cause of cardiac arrest (myocardial infarction or other cause) was established for each patient in hospital. Results: A total of 109 patients who suffered nontraumatic cardiac arrest were included in the study. The rates of restoration of spontaneous circulation and subsequent hospital admission were higher in vasopressin-treated groups (23/53 [45%] in group I, 19/31 [61%] in group II and 17/27 [63%] in group III). There were also higher 24-hour survival rates among vasopressin-treated patients (P < 0.05), and more vasopressin-treated patients were discharged from hospital (10/51 [20%] in group I, 8/31 [26%] in group II and 7/27 [26%] group III; P = 0.21). Especially in the subgroup of patients with myocardial infarction as the underlying cause of cardiac arrest, the hospital discharge rate was significantly higher in vasopressin-treated patients (P < 0.05). Among patients who were discharged from hospital, we found no significant differences in neurological status between groups. Conclusion: The greater 24-hour survival rate in vasopressin-treated patients suggests that consideration of combined vasopressin and adrenaline is warranted for the treatment of refractory ventricular fibrillation or pulseless ventricular tachycardia. This is especially the case for those patients with myocardial infarction, for whom vasopressin treatment is also associated with a higher hospital discharge rate.
Ključne besede: vasopressin, antidiuretic hormone, ADH, out-of-hospital cardiopulmonary resuscitation, ventricular fibrillation, pulseless ventricular tachycardia
Objavljeno v DKUM: 29.06.2017; Ogledov: 1884; Prenosov: 201
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Opis: Introduction: The prognosis among patients who suffer out-of-hospital cardiac arrest is poor. Higher survival rates have been observed only in patients with ventricular fibrillation who were fortunate enough to have basic and advanced life support initiated early after cardiac arrest. The ability to predict outcomes of cardiac arrest would be useful for resuscitation. Changes in expired end-tidal carbon dioxide levels during cardiopulmonary resuscitation may be a useful non-invasive predictor of successful resuscitation and survival from cardiac arrest, and help in the termination of cardiopulmonary resuscitation in the field. Methods: This is a prospective observational study of 737 cases of victims who suffered sudden out-of-hospital cardiac arrest. The patients were intubated and the measurements of end-tidal carbon dioxide were performed. Data according to the Utstein criteria, demographic information, medical data and partial pressure of end-tidal carbon dioxide (petCO2) values were collected for each patient in cardiac arrest, by the emergency physician. We presumed that an end-tidal carbon dioxide level of 1.9 kPa (14.3 mmHg) or more after 20 minutes of standard advanced cardiac life support would predict restoration of spontaneous circulation (ROSC). Results: Partial pressure of end-tidal carbon dioxide after 20 minutes of advanced life support averaged 0.92+/- 0.29 kPa (6.9mmHg +/- 2.2 mmHg) in patients who did not have ROSC and 4.36 +/-1.11 kPa (32.8 mmHg +/- 9.1 mmHg) in those who did (p<0,001). End-tidal carbon dioxide values of 1.9 kPa (14.3 mmHg) or less discriminated between the 402 patients with ROSC and 335 patients without ROSC. When a 20-minute end-tidal carbon dioxide value of 1.9 kPa (14.3 mmHg) or less was used as a screening test to predict ROSC, the sensitivity, specificity, positive predictive value, and negative predictive value were all 100 percent. Conclusions: Measurements of end-tidal carbon dioxide levels of more than 1.9 kPa (14.3 mmHg) after 20 minutes should be used to accurately predict ROSC. End-tidal carbon dioxide levels should be monitored during cardiopulmonary resuscitation and considered a useful prognostic value for determining the outcome of resuscitative efforts and termination of cardio-pulmonary resuscitation in the field.
Ključne besede: out-of-hospital cardiac arrest, cardiopulmonary resuscitation, CPR, partial pressure of end-tidal carbon dioxide, PetCO2
Objavljeno v DKUM: 29.06.2017; Ogledov: 1968; Prenosov: 172
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