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Fulltext Outcomes of cardiopulmonary resuscitation performed in Emergency Department, Hospital Universiti Sains Malaysia

Chew KS, Idzwan ZM, Hisamuddin NA, Kamaruddin J, Wan Aasim WA

Med J Malaysia, 2008 Mar;63(1):4-8.
PMID: 18935723 MyJurnal

Despite the progresses made in the science of cardiopulmonary resuscitation, there is lack of published works on this area in the Malaysian context. This survey was done to look at the outcomes of all cardiopulmonary resuscitation performed in Emergency Department (ED), Hospital Universiti Sains Malaysia (HUSM). This is a one year cross-sectional study from March 2005-March 2006. All adult cardiac arrest cases with CPR performed in ED, HUSM were included in the survey. The end points are return of spontaneous circulation (ROSC) and survival to ward admission. Out of the total 63 cases of cardiac arrest with CPR performed, only 19 cases (30.2%) had ROSC after CPR performed on them. Eventually only six patients (9.5%) had survival to ward admission. Patients with shockable intial arrest rhythm has a significantly higher chance to achieve ROSC (60.0%) compared to non-shockable rhythms (24.5%) (p = 0.025). However, there was no different in survival to ward admission between shockable and non shockable rhythms groups. The survival after cardiac arrest is still dismally poor. Perhaps we should be more selective in initiating CPR especially for out of hospital cardiac arrest.
Fulltext How frequent is bystander cardiopulmonary resuscitation performed in the community of Kota Bharu, Malaysia?

Chew KS, Mohd Idzwan Z, Nik Hishamuddun NA, Wan Aasim WA, Kamaruddin J

Singapore Med J, 2008 Aug;49(8):636-9.
PMID: 18756348

INTRODUCTION: Bystander cardiopulmonary resuscitation (CPR) serves as a vital link to improve the chance of survival among the out-of-hospital cardiac arrest (OHA) patients. The frequency of bystander CPR in Malaysia is largely unknown. The aim of this study was to find out how frequently bystander CPR was performed among OHA patients with CPR performed at the Emergency Department (ED), Hospital Universiti Sains Malaysia (HUSM), prior to their arrival to the department.
METHODS: In this one-year observational study, data was collected from cases of CPR performed in ED, HUSM. In the OHA category, a subanalysis was further performed to look into the frequency and effects of bystander CPR on achieving return of spontaneous circulation and survival to hospital admission. The categorical data collected was analysed using chi-square test or Fisher-exact test.
RESULTS: Out of a total of 23 OHA patients that had CPR performed on arrival at the ED, HUSM, from March 2005 to March 2006, only two cases (8.7 percent) had bystander CPR performed. None of these two cases achieved return of spontaneous circulation.
CONCLUSION: Although this study has many limitations, it does indicate that the frequency of bystander CPR is dismally low in our community and the mere fact that bystander CPR was reported to be done does not seem to translate into a higher chance of survival to admission. The quality and effectiveness of the technique is equally important.
KEYWORDS: bystander cardiopulmonary resuscitation, cardiopulmonary resuscitation, out-of-hospital cardiac arrest , return of spontaneous circulation
Fulltext Correlations between capnographic waveforms and peak flow meter measurement in emergency department management of asthma

Nik Hisamuddin NA, Rashidi A, Chew KS, Kamaruddin J, Idzwan Z, Teo AH

Int J Emerg Med, 2009 Feb 24;2(2):83-9.
PMID: 20157449 DOI: 10.1007/s12245-009-0088-9

BACKGROUND: The usual method for initial assessment of an acute asthma attack in the emergency room includes the use of peak flow measurement and clinical parameters. Both methods have their own disadvantages such as poor cooperation/effort from patients (peak flow meter) and lack of objective assessment (clinical parameters). We were looking into other methods for the initial asthma assessment, namely the use of capnography. The normal capnogram has an almost square wave pattern comprising phase 1, slope phase 2, plateau phase 3, phase 4 and angle alpha (between slopes 2 and 3). The changes in asthma include decrease in slope of phase 2, increase in slope 3 and opening of angle alpha.
AIMS: Our objective was to compare and assess the correlation between the changes in capnographic indices and peak flow measurement in non-intubated acute asthmatic patients attending the emergency room.
METHODS: We carried out a prospective study in a university hospital emergency department (ED). One hundred and twenty eight patients with acute asthma were monitored with peak flow measurements and then had a nasal cannula attached for microstream sampling of expired carbon dioxide. The capnographic waveform was recorded onto a PC card for indices analysis. The patients were treated according to departmental protocols. After treatment, when they were adjudged well for discharge, a second set of results was obtained for peak flow measurements and capnographic waveform recording. The pre-treatment and post-treatment results were then compared with paired samples t-test analysis. Simple and canonical correlations were performed to determine correlations between the assessment methods. A p value of below 0.05 was taken to be significant.
RESULTS: Peak flow measurements showed significant improvements post-treatment (p < 0.001). On the capnographic waveform, there was a significant difference in the slope of phase 3 (p < 0.001) and alpha angle (p < 0.001), but not in phase 2 slope (p = 0.35). Correlation studies done between the assessment methods and indices readings did not show strong correlations either between the measurements or the magnitude of change pre-treatment and post-treatment.
CONCLUSION: Peak flow measurements and capnographic waveform indices can indicate improvements in airway diameter in acute asthmatics in the ED. Even though the two assessment methods did not correlate statistically, capnographic waveform analysis presents several advantages in that it is effort independent and provides continuous monitoring of normal tidal respiration. They can be proposed for the monitoring of asthmatics in the ED.

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