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Dive into the research topics where Dae Young Hong is active.

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Featured researches published by Dae Young Hong.


Resuscitation | 2012

A different rescuer changing strategy between 30:2 cardiopulmonary resuscitation and hands-only cardiopulmonary resuscitation that considers rescuer factors: A randomised cross-over simulation study with a time-dependent analysis

Dae Young Hong; Sang O Park; Kyeong Ryong Lee; Kwang Je Baek; Dong Hyuk Shin

AIMnTo compare the time-dependent changes in the quality of chest compressions in 30:2 cardiopulmonary resuscitation (CPR) and hands-only cardiopulmonary resuscitation (HO-CPR) and to evaluate how individual rescuer factors affect the quality of chest compressions over time for both CPR techniques.nnnMETHODSnTotal 1028 adult hospital and university workers participated in CPR training programs including sessions of 30:2 CPR and HO-CPR. Tests of both CPR methods were performed in a random order using a manikin with Skill-Reporter™. Data were collected from 863 subjects. The time-dependent changes in chest compressions quality and the effects of individual rescuer factors (age, gender, body mass index (BMI), prior CPR training and experience) were analysed using the general linear model for a repeated-measures procedure.nnnRESULTSnIn HO-CPR, the mean proportion of correct compressions depth (MPCD) decreased significantly throughout the time sectors following 20-40s (74.4-50.4% in 100-120 s) compared to 30:2 CPR (83.4-76.3% in 100-120 s) (p<0.0001). A significant decline of MPCD (MPCD<70%) was initially observed at 40-60s in HO-CPR, however, this pattern was not observed in 30:2 CPR. Individual rescuer factors minimally affected the time-dependent change in MPCD during 30:2 CPR. For HO-CPR, all rescuer factors except for male or obese/overweight (BMI≥25) were associated with a significant declines of MPCD, and these decline were usually observed from 40 to 60s.nnnCONCLUSIONnSwitching rescuers at an interval of 2-min is reasonable for 30:2 CPR. However, for HO-CPR switching rescuers every 1-min may be preferable except when rescuers are male or obese/overweight (BMI≥25).


Resuscitation | 2015

Video laryngoscopy improves the first-attempt success in endotracheal intubation during cardiopulmonary resuscitation among novice physicians

Sang O Park; Jong Won Kim; Joon Ho Na; Ki Ho Lee; Kyeong Ryong Lee; Dae Young Hong; Kwang Je Baek

AIMnTo compare the first-attempt success in endotracheal intubation (ETI) during cardiopulmonary resuscitation (CPR) using direct laryngoscopy (DL) and video laryngoscopy (VL) (GlideScope(®)) among novice emergency physicians (EPs).nnnMETHODSnThis study is a historically controlled clinical design. From May 2011 to April 2013 out-of-hospital cardiac arrest patients were intubated during CPR by novice EPs. CPR data was automatically recorded by pre-installed video and subsequently analysed. The primary outcome was the success rate of the first-attempt at ETI. In addition, time to successful ETI from first-attempt (T-complete), duration of chest compression interruptions, and incidence of oesophageal intubation were compared.nnnRESULTSnOf 305 patients undergoing ETI, 83 were intubated by novice EPs. The success rate of first-attempt ETI in the VL group (n=49) was higher than that in the DL group (n=34, 91.8% vs. 55.9%; p<0.001). The median T-complete was significantly shorter with VL than with DL (37 [29-55] vs. 62 [56-110] s; p<0.001). Oesophageal intubation was observed only in the DL group (n=6, 17.6%). The median duration of chest compression interruptions was greater with DL (7 [3-6] s) than with VL (0 [0-0] s). Improvements in ETI during CPR were observed in the VL group after the first 3 months, but not the DL group during regular use for 1 year.nnnCONCLUSIONSnFor novice EPs, the VL could significantly improve the first-attempt success in ETI during CPR while the DL couldnt improve it.


Resuscitation | 2013

Feasibility of the video-laryngoscope (GlideScope®) for endotracheal intubation during uninterrupted chest compressions in actual advanced life support: A clinical observational study in an urban emergency department

Sang O Park; Kwang Je Baek; Dae Young Hong; Sang Chul Kim; Kyeong Ryong Lee

AIMnThis is the first clinical trial to evaluate whether successful endotracheal intubation (ETI) using a video-laryngoscope (VL) (GlideScope(®)) can be performed easily without chest compression interruptions during actual cardiopulmonary resuscitation (CPR) after brief VL training, regardless of the physicians levels of experience with successful ETI in the past.nnnMETHODSnWe performed a prospective, clinical observation study. After completing a brief 1-h VL training, 14 emergency physicians intubated arrest victims using a VL during CPR in the emergency department for a period of 1 year. All CPRs were recorded by video and were reviewed retrospectively. Outcomes were based on the success rate of the first ETI attempt, the time until the first successful ETI attempt (TUS) and chest compression interruptions during ETI. The outcomes were compared based on the physicians varying experience with successful ETI in the past.nnnRESULTSnOf 71 CPRs, all cases were successful and 66 cases (93%) were successful at the first ETI attempt with no significant chest compression interruptions. The median TUS was 41.5 (33.8, 61.2) s. There were no differences between less and more experienced physicians in the success rate of the first ETI attempts (97.3% vs. 88.2%; p=0.187), or the median TUS (41.5 (33.5, 58.0) vs. 42.0 (33.8, 64.3) s; p=0.842).nnnCONCLUSIONSnIn a clinical setting, the use of a VL had a high success rate for the first ETI attempt with notably few chest compression interruptions, regardless of the physicians varying experience with successful ETI in the past.


Resuscitation | 2013

A clinical observational study analysing the factors associated with hyperventilation during actual cardiopulmonary resuscitation in the emergency department.

Sang O Park; Dong Hyuk Shin; Kwang Je Baek; Dae Young Hong; Eun Jung Kim; Sang Chul Kim; Kyeong Ryong Lee

AIMnThis is the first study to identify the factors associated with hyperventilation during actual cardiopulmonary resuscitation (CPR) in the emergency department (ED).nnnMETHODSnAll CPR events in the ED were recorded by video from April 2011 to December 2011. The following variables were analysed using review of the recorded CPR data: ventilation rate (VR) during each minute and its associated factors including provider factors (experience, advanced cardiovascular life support (ACLS) certification), clinical factors (auscultation to confirm successful intubation, suctioning, and comments by the team leader) and time factors (time or day of CPR).nnnRESULTSnFifty-five adult CPR cases including a total of 673 min sectors were analysed. The higher rates of hyperventilation (VR>10/min) were delivered by inexperienced (53.3% versus 14.2%) or uncertified ACLS provider (52.2% versus 10.8%), during night time (61.0 versus 34.5%) or weekend CPR (53.1% versus 35.6%) and when auscultation to confirm successful intubation was performed (93.5% versus 52.8%) than not (all p<0.0001). However, experienced (25.3% versus 29.7%; p=0.448) or certified ACLS provider (20.6% versus 31.3%; p<0.0001) could not deliver high rate of proper ventilation (VR 8-10/min). Comment by the team leader was most strongly associated with the proper ventilation (odds ratio 7.035, 95% confidence interval 4.512-10.967).nnnCONCLUSIONSnHyperventilation during CPR was associated with inexperienced or uncertified ACLS provider, auscultation to confirm intubation, and night time or weekend CPR. And to deliver proper ventilation, comments by the team leader should be given regardless of providers expert level.


Resuscitation | 2016

Video laryngoscopy vs. direct laryngoscopy: Which should be chosen for endotracheal intubation during cardiopulmonary resuscitation? A prospective randomized controlled study of experienced intubators ☆

Jong Won Kim; Sang O Park; Kyeong Ryong Lee; Dae Young Hong; Kwang Je Baek; Young Hwan Lee; Jeong Hun Lee; Pil Cho Choi

AIMnThis study compared endotracheal intubation (ETI) performance during cardiopulmonary resuscitation (CPR) between direct laryngoscopy (DL) and video laryngoscopy (VL) (GlideScope(®)) by experienced intubators (>50 successful ETIs).nnnMETHODSnThis was a prospective randomized controlled study conducted in an emergency department between 2011 and 2013. Intubators who used DL or VL were randomly allocated to ETI during CPR. Data were collected from recorded video clips and rhythm sheets. The success, speed, complications, and chest compressions interruption were compared between the two devices.nnnRESULTSnTotal 140 ETIs by experienced intubators using DL (n=69) and VL (n=71) were analysed. There were no significant differences between DL and VL in the ETI success rate (92.8% vs. 95.8%; p=0.490), first-attempt success rate (87.0% vs. 94.4%; p=0.204), and median time to complete ETI (51 [36-67] vs. 42 [34-62]s; p=0.143). In both groups, oesophageal intubation and dental injuries seldom occurred. However, longer chest compressions interruption occurred using DL (4.0 [1.0-11.0]s) compared with VL (0.0 [0.0-1.0]s) and frequent serious no-flow (interruption>10s) occurred with DL (18/69 [26.1%]) compared with VL (0/71) (p<0.001). For highly experienced intubators (>80 successful ETIs), frequent serious no-flow occurred in DL (14/55 [25.5%] vs. 0/57 in VL).nnnCONCLUSIONSnThe ETI success, speed and complications during CPR did not differ significantly between the two devices for experienced intubators. However, the VL was superior in terms of completion of ETI without chest compression interruptions.nnnTRIAL REGISTRATIONnClinical Research Information Service (CRIS) in South Korea KCT0000849.


Emergency Medicine Journal | 2013

Efficacy of the Disposcope endoscope, a new video laryngoscope, for endotracheal intubation in patients with cervical spine immobilisation by semirigid neck collar: comparison with the Macintosh laryngoscope using a simulation study on a manikin

Sang O Park; Dong Hyuk Shin; Kyeong Ryong Lee; Dae Young Hong; Eun Jung Kim; Kwang Je Baek

Objective To evaluate whether endotracheal intubation in patients with cervical spine immobilisation by a semirigid neck collar is easier using the Disposcope endoscope (DE), a new video laryngoscope, than with the Macintosh laryngoscope (ML). Methods Sixty-eight medical interns who participated in a training programme for endotracheal intubation using the DE and ML were recruited to the randomised crossover trial 1u2005week after completing the training programme. In the trial, they used both the DE and the ML to perform intubation on a manikin wearing a semirigid neck collar. The time required to view the vocal cords and to complete intubation, successful endotracheal intubation, modified Cormack–Lehane classification (CL grade) and dental injury were recorded and analysed. Results The mean (SD) time to view the vocal cords was significantly shorter with the DE than with the ML (10.0 (7.0) vs 20.8 (18.9)u2005s; p<0.0001). There were higher rates of CL grades 1 and 2a (69.1% and 22.1%) using the DE than with the ML (10.3% and 14.7%). All 68 participants had a higher rate of successful endotracheal intubation using the DE than using the ML (68 (100%) vs 47 (69.1%); p<0.0001). It took less time to complete endotracheal intubation with the DE than with the ML (p<0.0001). Conclusions In patients with cervical spine immobilisation by a semirigid neck collar, the DE may be a more effective device for endotracheal intubation than the ML.


BMJ Open | 2016

Efficacy of various types of laryngoscope (direct, Pentax Airway Scope and GlideScope) for endotracheal intubation in various cervical immobilisation scenarios: a randomised cross-over simulation study

Jong Won Kim; Kyeong Ryong Lee; Dae Young Hong; Kwang Je Baek; Young Hwan Lee; Sang O Park

Objective To compare the efficacy of direct laryngoscopy (DL), Pentax Airway Scope (PAWS) and GlideScope video laryngoscope (GVL) systems for endotracheal intubation (ETI) in various cervical immobilisation scenarios: manual in-line stabilisation (MILS), Philadelphia neck collar (PNC) (moderate limit of mouth opening) and Stifneck collar (SNC) (severe limit of mouth opening). Design Randomised cross-over simulation study. Setting and Participants 35 physicians who had >30 successful ETI experiences at a tertiary hospital in Seoul, Korea. Primary and secondary outcome measures Participants performed ETI using PAWS, GVL and DL randomly in simulated MILS, PNC and SNC scenarios in our simulation centre. The end points were successful ETI and the time to complete ETI. In addition, modified Cormack-Lehane (CL) classification and pressure to teeth were recorded. Results In MILS, there were no significant differences in the rate of success of ETI between the three devices: 33/35(94.3%) for DL vs 32/35(91.4%) for GVL vs 35/35(100.0%) for PAWS; p=0.230). PAWS achieved successful ETI more quickly (19.8u2005s) than DL (29.6u2005s) and GVL (35.4u2005s). For the PNC scenario, a higher rate of successful ETI was achieved with GVL 33/35 (94.3%) than PAWS 29/35 (82.9%) or DL 25/35 (71.4%) (p=0.040). For the SNC scenario, a higher rate of successful ETI was achieved with GVL 28/35(80.0%) than with DL 14/35(40.0%) and PAWS 7/35(20.0%) (p<0.001). For the PNC and SNC scenarios, GVL provided a relatively good view of the glottis, but a frequent pressure to teeth occurred. Conclusions All three devices are suitable for ETI in MILS. DL is not suitable in both neck collar scenarios. PAWS showed faster intubations in MILS, but was not suitable in the SNC scenario. GVL is most suitable in all cervical immobilisation scenarios, but may cause pressure to teeth more frequently.


Clinica Chimica Acta | 2016

Value of plasma neutrophil gelatinase-associated lipocalin in predicting the mortality of patients with sepsis at the emergency department.

Dae Young Hong; Jong Won Kim; Jin Hui Paik; Hyun Min Jung; Kwang Je Baek; Sang O Park; Kyeong Ryong Lee

BACKGROUNDnSepsis is a major cause of morbidity and mortality in the emergency department. This study aimed to evaluate the assessment of severity of sepsis by and prognostic value of plasma neutrophil gelatinase-associated lipocalin (NGAL) compared with other widely used biological markers of inflammation in patients with sepsis.nnnMETHODSnNGAL, procalcitonin, and C-reactive protein values were measured in 470 patients with suspected sepsis, and the Mortality in Emergency Department Sepsis (MEDS) score was obtained for all enrolled subjects, who were followed for up to 28days.nnnRESULTSnThe median plasma NGAL value was increased with sepsis severity according to the MEDS score. The plasma NGAL value was higher in nonsurvivors than in survivors. The area under the receiver operating characteristic curve of NGAL (0.797) was greater than that of procalcitonin (0.599) and MEDS score (0.774) in predicting 28-day hospital mortality. Multivariable logistic regression found that the plasma NGAL value was an independent predictor for hospital mortality in patients with sepsis. The plasma NGAL values were positively correlated with C-reactive protein and procalcitonin levels, and MEDS scores.nnnCONCLUSIONSnPlasma NGAL is a valuable biological marker in the assessment of severity and prediction of prognosis of patients with sepsis in the emergency department.


Emergency Medicine Journal | 2008

Accuracy of Web-based recording program for in-hospital resuscitation: laboratory study.

Yoo Seok Park; Incheol Park; Je Sung You; Dae Young Hong; Kyeong Ryong Lee; Sung Pil Chung

Objective: The purpose of this study was to assess the accuracy of a Web-based resuscitation recording program compared with the handwritten method. Methods: A Web site was developed to record in-hospital resuscitation events and a mock resuscitation was recorded using both the Web site and handwritten method by emergency nurses. Accurate recorded events and times were compared between the two methods through the use of a video clip. Paired t tests were used to compare differences in absolute timing error, the number of omitted events out of 11 reference events and total recorded events. Results: Twenty-one emergency nurses recorded simulated resuscitation events using both the handwritten and Web-based computerised recording system. The mean absolute timing errors were significantly lower using the computerised recording program (37.3 s (SD 17.1) versus 8.3 s (SD 5.3), p<0.001). The mean number of omissions for the computerised program was 1.8 (SD 0.8) compared with 1.4 (SD 1.1) for the handwritten method (pu200a=u200a0.202). The mean number of total recorded events for the computerised program was 16.5 (SD 3.5) compared with 15.0 (SD 3.8) for the handwritten method (pu200a=u200a0.063). Conclusions: This study suggests that a Web-based recording program decreased timing error while causing no differences in the number of recorded or omitted events in a laboratory setting.


Clinica Chimica Acta | 2016

Usefulness of plasma neutrophil gelatinase-associated lipocalin concentration for predicting the severity and mortality of patients with community-acquired pneumonia

Jong Won Kim; Dae Young Hong; Kyeong Ryong Lee; Sin Young Kim; Kwang Je Baek; Sang O Park

BACKGROUNDnThe usefulness of plasma neutrophil gelatinase-associated lipocalin (NGAL) concentration for predicting the outcome of community-acquired pneumonia (CAP) is unclear. We evaluated the prognostic value of plasma NGAL concentration for predicting disease severity in comparison with other widely used biological markers of inflammation in patients with CAP.nnnMETHODSnNGAL, procalcitonin, and C-reactive protein concentrations were measured in 362 patients with CAP, who were followed for up to 30days. The Pneumonia Severity Index (PSI) and CURB-65 score were obtained for all patients.nnnRESULTSnThe median plasma NGAL concentration increased with CAP severity classified according to the PSI. Plasma NGAL concentration was higher in nonsurvivors than in survivors. The AUC for predicting mortality was highest for NGAL concentration (0.871), followed by that for PSI (0.865) and procalcitonin concentration (0.744). Multivariable logistic regression analysis showed that plasma NGAL concentration was an independent predictor of hospital mortality in CAP patients. Plasma NGAL concentration correlated positively with C-reactive protein and procalcitonin concentrations, CURB-65 score, and PSI.nnnCONCLUSIONSnPlasma NGAL concentration is a valuable biological marker in the assessment of the severity and prediction of the prognosis of patients with CAP in the emergency department.

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Eun Jung Kim

Seoul National University

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