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Signa Vitae

A Journal In Intensive Care And Emergency Medicine

Tag: cardiac arrest (Page 1 of 4)

The effect of posture modification during continuous one-handed chest compression: A pilot study using in-hospital pediatric cardiac arrest simulation

Abstract

Background. We modified the posture of the one-handed chest compression (MOHCC) as follows: first, the axis of the rescuer’s compression hand was adjusted to the lower half of the patient’s sternum; second, the opposite hand was wrapped around the elbow joint of the rescuer’s compression arm. This study evaluated the effect of the MOHCC on the mean chest compression depth (MCD) over time.

Methods. Thirty medical doctors conducted 2 min of continuous MOHCC without ventilation using the in-hospital pediatric arrest model (70-cm-high bed, 25-cm-high stepstool, a pediatric manikin and a cardiopulmonary resuscitation (CPR) meter). The MCD and mean chest compression rate (MCR) were measured at 30 s intervals using the Q-CPR review software.

Results. The MCD changed significantly over time (0–30 s, 41.9–44.7 mm; 30–60 s, 40.4–43.6 mm; 60–90 s, 39.2–42.8 mm; 90–120 s, 38.6–42.3 mm; [95% CI], P=0.002). However, it did not decrease significantly between 60–90 s and 90–120 s (P=0.173). The total decrease in MCD was 2.9 mm over a 2 min period. The MCR did not change significantly over time (0–30 s, 108.6–118.9 /min; 30–60 s, 107.9–119.1 /min; 60–90 s, 107.7–119.3 /min; 90–120 s, 107.4–119.0 /min; P=0.800).

Conclusions. Although the MCD changed significantly over a 2 min period, it did not decrease significantly after 90 s during performance of MOHCC. The MOHCC might be considered when the one-handed chest compression (OHCC) is selected as a chest compression method for cardiac arrest in small children.

Key words: cardiopulmonary resuscitation, cardiac arrest, child, fatigue

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Effects of therapeutic hypothermia and kinetics of serum protein S100B after cardiopulmonary resuscitation

Abstract

Introduction. Post-resuscitation care is regulated by international guidelines. A milestone of these is the application of therapeutic hypothermia (TH). The aims of our study were: to determine the 30-day-mortality for our patients, to monitor the efficacy and effects of TH, and to investigate serum protein S100B – as an early prognostic marker.

Materials and Methods. In our study, 57 patients, treated after cardiopulmonary resuscitation (CPR) on a multidisciplinary intensive care unit, were included. Patients were divided into groups who received and who didn’t receive TH. 30-day-mortality was determined as an end-point. Effects of TH were monitored using statistical analysis according to clinical parameters and laboratory tests. Serum protein S100B levels were measured with ELISA technique on 20 randomised patients at admission and the 1st, 3rd and 5th day after CPR.

Results. Total 30-day-mortality was 74%. TH did not reduced the 30-day-mortality (73% vs. 74%, p>0.05). We found a significant correlation between TH and serum lactate concentration after admission (0h, p=0.006) and at 12 (p=0.045) and 36 (p=0.049) hours after CPR. On the 3rd (p=0.005) and 4th (p=0.043) day after CPR, as a result of TH, platelet count was significantly higher compared to normothermic samples. There was no significant difference in protein S100B levels between the normothermic and TH group and protein S100B levels did not correlate with 30-day-mortality.

Conclusion. Despite recommendations of international guidelines, we cannot prove the beneficial effect of TH, or a correlation of protein S100B levels with a positive outcome.

Key words: cardiac arrest, cardiopulmonary resuscitation, post-resuscitation care, therapeutic hypothermia, protein S100B

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Predictors of neurological outcome in the emergency department for elderly patients following out-of-hospital restoration of spontaneous circulation

Abstract

Aims. Survival rates for cardiac arrest in acute medicine are higher following out-of-hospital restoration of spontaneous circulation (OH-ROSC). However, data pertaining to OH-ROSC is limited in the elderly population. We aimed to assess the predictors of neurological outcome among elderly patients with OH-ROSC.

Methods. We retrospectively analyzed the data of patients 65 years and older who achieved OH-ROSC and who presented to the emergency department (ED) between 2009 and 2013. The following parameters were considered: age, sex, medical history, vital signs, blood values, initial electrical rhythm, witnessed cardiac arrest, bystander cardiopulmonary resuscitation, resuscitation duration, attempted defibrillation, and neurological outcome. Neurological outcomes were evaluated 3 months after cardiac arrest, using the cerebral performance category (CPC) score, and were classified into two groups: favorable outcome (CPC = 1–2) and unfavorable outcome (CPC = 3–5).

Results. Fifty-five patients were studied, of which 21 and 34 patients were classified as having favorable and unfavorable outcomes, respectively. The following values were associated with favorable outcomes: resuscitation duration, initial cardiac rhythm, base excess, pH, lactate levels, the motor response on the Glasgow Coma Scale (GCS), and the number of patients with GCS ≤8 (p < 0.01). Logistic regression analysis confirmed that motor response scores and lactate levels were independent predictors of neurological outcomes.

Conclusions. Lactate levels and GCS motor response measured immediately at ED arrival are likely to be useful to assess the neurological outcomes among elderly patients with OH-ROSC.

Key words: age, basic life support, cardiac arrest, prediction, resuscitation

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Automated external defibrillator skills among lay people in the region of Koroska: a pilot study

Abstract

Background. In the region of Koroška, there are more and more public spaces equipped with automated external defibrillators which can be used by a witnessed bystander. The aim of this study was to gain insight into the skills required for using automated external defibrillators.

Methods. This was a cross-sectional survey conducted in two family medicine practices. We included volunteers who visited their family doctor during a period of four days. Skills were assessed in a virtual setting using a plastic manikin.

Results. There were 107 participants in the sample, 60.0% were women. Average age of the sample was 47.6±16.8 years. In the practical part (skills testing), the participants earned 2.7 points from a total of 5 points. Younger participants and those who attended a course in basic life support, in the past 10 years, had a significantly higher score.

Conclusion. Lay people need more education regarding skills for using automated external defibrillators.

Key words: automated external defibrillator, basic life support, lay people, survival, cardiac arrest

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A seven-year follow-up of discharged patients after out-of-hospital cardiac arrest with respect to ST-segment elevation myocardial infarction

Abstract

Introduction. The aim of this multicentre prospective study was to describe the seven-year survival of patients, from the region of East Bohemia, after out-of-hospital cardiac arrest (OHCA), occurring between  2002 and  2004. The main focus of this study was on the survival of patients with ST-segment elevated myocardial infarction (STEMI).
Patients and Methods. A total 718 patients  with OHCA were included in the study. Of these patients, 149 were admitted to hospital. The main cohort of our study consisted of 53 patients (41 men; median 59; average 58±13), who survived acute hospitalization. In these patients, STEMI was the main cause of OHCA in 15 cases (28%), whereas without STEMI was found in 38 cases (72%). Patients who survived hospitalization were periodically followed-up at six-monthly intervals.
Results. In the first follow-up year, 42 patients survived (79% of 53 patients), in the third year 38 patients (72%), in the fifth year 33 patients (62%) and in the seventh year 31 patients (59%). Ninety-four percent of patients were in good neurological condition after the seventh follow-up year. The whole period of seven years was survived by 12 (80%) out of 15 patients with STEMI, and by 19 (50%) out of 38 patients without STEMI. In patients who survived the seventh year after STEMI, direct percutaneous coronary intervention was performed in 11 cases.
Conclusions. Fifty-nine percent of patients discharged from hospital after OHCA   survived until the seventh year. The highest rate of survival during this period was seen in patients with STEMI, i.e. in 80%.

 

Key words: cardiac arrest, myocardial infarction, out-of-hospital cardiac arrest, sudden cardiac death, survivors, ventricular fibrillation

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