-
Nonlinear Analysis of Heart Rate Variability: Possible Predictor for Atrial Fibrillation after Coronary Artery Bypass Graft (CABG) Surgery
-
Kyung Sil Im, Jong Bun Kim, Jae Myeong Lee, Kuhn Park, Hyun Ju Jung, Jeong Yun Rhee
-
Korean J Crit Care Med. 2007;22(1):25-29.
-
-
-
 Abstract
 PDF
- BACKGROUND
Heart Rate Variability (HRV) is a valuable marker of autonomic tone and may assist evaluating the prognosis in patients with heart disease. The purpose of this study was to assess whether preoperative heart rate variability analysis predicts atrial fibrillation in patients undergoing coronary artery bypass graft (CABG) surgery. METHODS: This study was designed as a prospective observational study. After IRB approval was obtained by our institution, 76 patients scheduled for elective CABG surgery underwent a 10-min electrocardiogram recordings 1~2 hours prior to surgery. Heart rate variability analysis was performed with spectral analysis and point correlation dimension. RESULTS: There was no significant difference in the low and high frequency component (LF/HF) ratio preoperatively between patients with atrial fibrillation and patients with normal sinus rhythm postoperatively (3.0+/-2.45, 4.25+/-3.70, p=0.085). Baseline peak point correlation dimension (pPD2) was significantly higher in patients with atrial fibrillation than in patients with normal sinus rhythm postoperatively (4.2+/-0.8, 3.8+/-0.7, p=0.042). CONCLUSIONS: Patients who developed atrial fibrillation postoperatively had a higher baseline pPD2 value preoperatively. Point correlation dimensions may predict the occurrence of postoperative atrial fibrillation after CABG surgery. However, further studies are needed to confirm whether point correlation dimensions are an effective predictor for postoperative atrial fibrillation.
-
Retropharyngeal Dissection during Nasotracheal Intubation: A Case Report
-
Hyun Ju Jung, Sie Hyun You, Jong Bun Kim, Young Moon Han, Kuhn Park
-
Korean J Crit Care Med. 2003;18(2):84-88.
-
-
-
Abstract
PDF
- Nasotracheal intubation is commonly performed for oropharyngeal or facial surgery. Although retropharyngeal dissection is a rare complication of nasotracheal intubation, serious sequelae may result. We report a case of a traumatic retropharyngeal dissection during nasotracheal intubation without untoward sequelae.
-
Comparison of Conventional Chiron 348 pH/blood Gas/electrolytes Analyzer and i-STAT Portable Clinical Analyzer
-
Dong Suk Chung, Jong Bun Kim, Sie Hyun You
-
Korean J Crit Care Med. 2000;15(1):35-40.
-
-
-
Abstract
PDF
- BACKGROUND
The development of so-called "Point-of-care" (POC) devices for blood or urine analysis has resulted in many systems that are widely used at home or at the bedside.
We evaluated the performance of the I-STAT portable clinical analyzer for measuring blood gases (pH, PCO2, PO2) and whole blood electrolytes (sodium, potassium and ionized calcium) with reference to a conventional blood gas analyzer (Chiron 348 pH/ blood gas/electrolytes).
METHODS
Thirty samples from the arterial blood were simultaneously analyzed with I-STAT system and with Chiron 348 pH/blood gas/ electrolytes analyzer. Differences between results of two methods were analyzed by paired t-test (p<0.05).
RESULTS
PO2, PCO2 and Na measured with I-STAT system and Chiron 348 PH/ blood gas/ electrolytes analyzer showed no significant differences. pH, calculated HCO3, K and Ca measured by two methods showed significant difference, but observed differences would not affect clinical decisions except ionized calcium.
CONCLUSIONS
This study shows that blood gas and electrolyte analysis using the I-STAT portable device is comparable with that performed by a conventional Chiron 348 pH/blood gas/ electrolytes analyzer except ionized calcium.
|
KSCCM
