Acute and Critical Care

Original Articles

Hematology
Characteristics and Clinical Outcomes of Critically Ill Cancer Patients Admitted to Korean Intensive Care Units: Soo Jin Na, Tae Sun Ha, Younsuck Koh, Gee Young Suh, Shin Ok Koh, Chae-Man Lim, Won-Il Choi, Young-Joo Lee, Seok Chan Kim, Gyu Rak Chon, Je Hyeong Kim, Jae Yeol Kim, Jaemin Lim, Sunghoon Park, Ho Cheol Kim, Jin Hwa Lee, Ji Hyun Lee, Jisook Park, Juhee Cho, Kyeongman Jeon; Acute Crit Care. 2018;33(3):121-129. Published online August 31, 2018; DOI: https://doi.org/10.4266/acc.2018.00143

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Background
The objective of this study was to investigate the characteristics and clinical outcomes of critically ill cancer patients admitted to intensive care units (ICUs) in Korea.
Methods
This was a retrospective cohort study that analyzed prospective collected data from the Validation of Simplified Acute Physiology Score 3 (SAPS3) in Korean ICU (VSKI) study, which is a nationwide, multicenter, and prospective study that considered 5,063 patients from 22 ICUs in Korea over a period of 7 months. Among them, patients older than 18 years of age who were diagnosed with solid or hematologic malignancies prior to admission to the ICU were included in the present study.
Results
During the study period, a total of 1,762 cancer patients were admitted to the ICUs and 833 of them were deemed eligible for analysis. Six hundred fifty-eight (79%) had solid tumors and 175 (21%) had hematologic malignancies, respectively. Respiratory problems (30.1%) was the most common reason leading to ICU admission. Patients with hematologic malignancies had higher Sequential Organ Failure Assessment (12 vs. 8, P<0.001) and SAPS3 (71 vs. 69, P<0.001) values and were more likely to be associated with chemotherapy, steroid therapy, and immunocompromised status versus patients with solid tumors. The use of inotropes/ vasopressors, mechanical ventilation, and/or continuous renal replacement therapy was more frequently required in hematologic malignancy patients. Mortality rates in the ICU (41.7% vs. 24.6%, P<0.001) and hospital (53.1% vs. 38.6%, P=0.002) were higher in hematologic malignancy patients than in solid tumor patients.
Conclusions
Cancer patients accounted for one-third of all patients admitted to the studied ICUs in Korea. Clinical characteristics were different according to the type of malignancy. Patients with hematologic malignancies had a worse prognosis than did patients with solid tumor.

Citations

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Su Yeon Lee, Jin Won Huh, Sang-Bum Hong, Chae-Man Lim, Jee Hwan Ahn
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Pulmonary
The Ability of the Acute Physiology and Chronic Health Evaluation (APACHE) IV Score to Predict Mortality in a Single Tertiary Hospital: Jae Woo Choi, Young Sun Park, Young Seok Lee, Yeon Hee Park, Chaeuk Chung, Dong Il Park, In Sun Kwon, Ju Sang Lee, Na Eun Min, Jeong Eun Park, Sang Hoon Yoo, Gyu Rak Chon, Young Hoon Sul, Jae Young Moon; Korean J Crit Care Med. 2017;32(3):275-283. Published online August 31, 2017; DOI: https://doi.org/10.4266/kjccm.2016.00990

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Abstract PDF

Background
The Acute Physiology and Chronic Health Evaluation (APACHE) II model has been widely used in Korea. However, there have been few studies on the APACHE IV model in Korean intensive care units (ICUs). The aim of this study was to compare the ability of APACHE IV and APACHE II in predicting hospital mortality, and to investigate the ability of APACHE IV as a critical care triage criterion. Methods: The study was designed as a prospective cohort study. Measurements of discrimination and calibration were performed using the area under the receiver operating characteristic curve (AUROC) and the Hosmer-Lemeshow goodness-of-fit test respectively. We also calculated the standardized mortality ratio (SMR). Results: The APACHE IV score, the Charlson Comorbidity index (CCI) score, acute respiratory distress syndrome, and unplanned ICU admissions were independently associated with hospital mortality. The calibration, discrimination, and SMR of APACHE IV were good (H = 7.67, P = 0.465; C = 3.42, P = 0.905; AUROC = 0.759; SMR = 1.00). However, the explanatory power of an APACHE IV score >93 alone on hospital mortality was low at 44.1%. The explanatory power was increased to 53.8% when the hospital mortality was predicted using a model that considers APACHE IV >93 scores, medical admission, and risk factors for CCI >3 coincidentally. However, the discriminative ability of the prediction model was unsatisfactory (C index <0.70). Conclusions: The APACHE IV presented good discrimination, calibration, and SMR for hospital mortality.

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Lowell Ling, Chun Ming Ho, Pauline Yeung Ng, King Chung Kenny Chan, Hoi Ping Shum, Cheuk Yan Chan, Alwin Wai Tak Yeung, Wai Tat Wong, Shek Yin Au, Kit Hung Anne Leung, Jacky Ka Hing Chan, Chi Keung Ching, Oi Yan Tam, Hin Hung Tsang, Ting Liong, Kin Ip Law
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Case Report

Two Cases of Postintubation Tracheoesophageal Fistula in Patients with a History of Tracheostomy: Case Report: Seung Chan Kim, Kyung Won Ha, Joon Ho Wang, Se Jin Kim, Won Hak Kim, So Hee Jeong, Woo Sung Lee, Sang Don Han, Gyu Rak Chon; Korean J Crit Care Med. 2009;24(2):87-91.; DOI: https://doi.org/10.4266/kjccm.2009.24.2.87

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Abstract PDF

Common causes of acquired tracheoesophageal (T-E) fistula are blunt trauma on the neck or chest, malignancy, long-term mechanical ventilation, and post-intubation injury. Most of the cases are fatal due to severe respiratory infection. We experienced two cases of post-intubation T-E fistula in patients with a history of tracheostomy that developed earlier than usual. One case was caused by excessive cuff pressure and the other by avulsion injury during endotracheal intubation. We can get instructions from these cases that how to prevent T-E fistula because it is hard to treat and causes severe outcomes.

Citations

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Occurrence of Acquired Tracheoesophageal Fistula Due to Excess Endotracheal Tube Cuff Volumes - A Case Report -
Myeong Soo Kim, Eun Jeong Koh, Ha Young Choi
Korean Journal of Critical Care Medicine.2013; 28(2): 146. CrossRef
Acquired Tracheoesophageal Fistula through Esophageal Diverticulum in Patient Who Had a Prolonged Tracheostomy Tube - A Case Report -
Jae Hwan Jung, Ji Sung Kim, Yong Kyun Kim
Annals of Rehabilitation Medicine.2011; 35(3): 436. CrossRef

Randomized Controlled Trial

Alteration of Lung Mechanics Depending on Expiratory Sensitivity (ESENS) during Pressure Support Ventilation: Kwang Won Seo, Gyu Rak Chon, Jong Joon Ahn, Yangjin Jega, Sang Bum Hong, Chae Man Lim, Younsuck Koh; Korean J Crit Care Med. 2006;21(1):8-16.

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Abstract PDF: BACKGROUND
To evaluate effects of 5 expiratory sensitivity (ESENS) levels (5%; 15%; 25%; 35%; 45%) on lung mechanics and the effects depending on the two P(0.1) levels (<3 cm H2O; > or =3 cm H2O).
METHODS
Prospective, randomized, physiologic study for intubated adult patients during weaning from mechanical ventilation. Patients were randomly submitted to the 5 settings of ESENS in the Galileo ventilator (Galileo Gold, Hamilton Medical AG, Switzerland). Physiologic variables were continuously measured using a Bicore CP-100 pulmonary mechanics monitor (CP-100, Bicore, USA).
RESULTS
Thirteen patients, ten men and three women, with a mean age of 65.2+/-16.1 yr were studied. Tidal volume (V(T)) decreased significantly from ESENS 5% to 45%. With increasing levels of ESENS, respiratory rates (RR) steadily increased from ESENS 5% to 35% and 45%. Shallow breath index (F/V(T)) increased significantly from ESENS 5% to 45%. Inspiratory time (T(I)) decreased gradually significantly from ESENS 5% to 45%. RR and F/V(T) increased from ESENS 5% to 15% and 45% and V(T) decreased gradually in patients with P(0.1)<3 cm H2O group, but not in patients with P(0.1)> or =3 cm H2O.
CONCLUSIONS
The proper adjustment of expiratory sensitivity (ESENS) levels improved patient-ventilator synchrony and decreased respiratory rates and shallow breath index, especially in P(0.1)<3 cm H2O during PSV in ventilator weaning patients. Lower ESENS level would be more appropriate in terms of lung mechanics in patients with less than 3 cm H2O of P(0.1).

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