Publications by authors named "Heung Bum Lee"

Background: Sepsis is a leading cause of intensive care unit (ICU) admission. However, few studies have evaluated how the ICU model affects the outcomes of patients with sepsis.

Methods: This post hoc analysis of data from the Management of Severe Sepsis in Asia's Intensive Care Units II study included 537 patients with sepsis admitted to 27 ICUs in Korea.

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Background: Screening patients with asymptomatic active tuberculosis (TB) is crucial as they can transmit the disease. Identifying the risk factors for transmission is essential for targeted screening. Understanding how the infectiousness of asymptomatic patients with TB affects disease outcomes is crucial for developing strategies to control TB spread.

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Background: This study evaluated adherence to the Global Initiative for Chronic Obstructive Lung Disease (GOLD) and Korean guidelines in the prescription patterns of respiratory specialists for stable chronic obstructive pulmonary disease (COPD) management.

Methods: Data were collected on medications from 2011 to 2022 using the Korea COPD Subtype Study (KOCOSS) cohort. Patients were divided into two groups: those registered before and after 2019, and we analyzed the percentage of patients meeting the recommended treatment criteria established by each guideline.

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Purpose: To determine effects of colonization with multidrug-resistant bacteria (MDRB) in general wards on characteristics, treatment, and prognosis of hospital-acquired pneumonia (HAP).

Methods: This was a multicenter retrospective cohort study of patients with HAP admitted to 16 tertiary or university hospitals in Korea from July 2019 to December 2019. From the entire cohort, patients who developed pneumonia in general wards with known colonization status before the onset of pneumonia were included in this study.

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Background: Mechanical power (MP) has been reported to be associated with clinical outcomes. Because the original MP equation is derived from paralyzed patients under volume-controlled ventilation, its application in practice could be limited in patients receiving pressure-controlled ventilation (PCV). Recently, a simplified equation for patients under PCV was developed.

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Article Synopsis
  • The study aimed to assess whether using a combination of fluoroquinolone antibiotics reduces mortality in patients with hospital-acquired pneumonia (HAP) compared to β-lactam monotherapy.
  • It involved a retrospective analysis of 631 patients across 16 hospitals in Korea during 2019, with a focus on 30-day mortality rates.
  • Results indicated no significant difference in mortality between the combination therapy and monotherapy groups, suggesting that fluoroquinolone combinations may not provide additional survival benefits for HAP patients.
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Background: Although the Life-Sustaining Treatment (LST) Decision Act was enforced in 2018 in Korea, data on whether it is well established in actual clinical settings are limited. Hospital-acquired pneumonia (HAP) is a common nosocomial infection with high mortality. However, there are limited data on the end-of-life (EOL) decision of patients with HAP.

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Pirfenidone, an antifibrotic medication approved for the treatment of idiopathic pulmonary fibrosis (IPF), often requires dose reduction owing to adverse events. In this study, we evaluated if pirfenidone's reduced dose has any impact on clinical outcomes in patients with IPF. We used the data of a prospective post-marketing study of pirfenidone conducted at 10 hospitals in South Korea from 2014 to 2017.

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Article Synopsis
  • Tuberculosis (TB) can affect various organs, with Extrapulmonary TB (EPTB) being harder to diagnose due to its diverse symptoms; this study aimed to compare characteristics of patients with pulmonary TB (PTB) versus EPTB.
  • The research analyzed data from 7,674 TB patients in South Korea, revealing that PTB patients were generally older and had a higher male proportion, while EPTB patients had higher body mass index and chronic kidney disease prevalence.
  • The findings indicate that underlying health issues influence the location of TB, highlighting the need for careful evaluation for EPTB in patients with certain comorbidities, particularly in regions where TB is common.
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Frailty is an important risk factor for adverse health-related outcomes. It is classified into several phenotypes according to nutritional state and physical activity. In this context, we investigated whether frailty phenotypes were related to clinical outcome of hospital-acquired pneumonia (HAP).

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Background/aims: Most studies on hospital-acquired pneumonia (HAP) have been conducted in intensive care unit (ICU) settings. This study aimed to investigate the microbiological and clinical characteristics of non-ICU-acquired pneumonia (NIAP) and to identify the factors affecting clinical outcomes in Korea.

Methods: This multicenter retrospective cohort study was conducted in patients admitted to 13 tertiary hospitals between July 1, 2019 and December 31, 2019.

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Background: The molecular adsorbent recirculating system (MARS) is a hepatic replacement system that supports excretory liver function in patients with liver failure. However, since MARS has been employed in our hospital, bleeding complications have occurred in many patients during or after MARS. The objective of this study was to determine how MARS affects coagulopathy and identify specific factors associated with bleeding complications.

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Objectives: To investigate whether administration of a vasopressor within 1 hour of first fluid loading affected mortality and organ dysfunction in septic shock patients.

Design: Prospective, multicenter, observational study.

Setting: Sixteen tertiary or university hospitals in the Republic of Korea.

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Background: Hospital-acquired pneumonia (HAP) and ventilator-associated pneumonia (VAP) are significant public health issues in the world, but the epidemiological data pertaining to HAP/VAP is limited in Korea. The objective of this study was to investigate the characteristics, management, and clinical outcomes of HAP/VAP in Korea.

Methods: This study is a multicenter retrospective cohort study.

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Purpose: To evaluate the usefulness and effectiveness of bronchial occluders in the treatment of postoperative bronchopleural fistula (BPF).

Materials And Methods: The subjects of the study were six out of seven postoperative BPF patients who underwent surgery due to tuberculosis or lung cancer between 2009 and 2019. Each patient had a bronchial occluder inserted to treat BPF that occurred after surgery.

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Objectives: To investigate the impact of normothermia on compliance with sepsis bundles and in-hospital mortality in patients with sepsis who present to emergency departments.

Design: Retrospective multicenter observational study.

Patients: Nineteen university-affiliated hospitals of the Korean Sepsis Alliance participated in this study.

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Article Synopsis
  • The study aimed to assess the changes in mechanical ventilation practices and outcomes in Korean ICUs between 2010 and 2016.
  • There was a significant increase in the use of non-invasive ventilation in 2016 (10.2%) compared to 2010 (2.5%), and patients received more sedation and analgesia.
  • Despite an overall stability in ICU mortality rates, improvements were noted in the management of ventilation, including a decrease in accidental extubation rates and a trend toward shorter ICU stays.
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Aim: The efficacy and safety of pirfenidone have been previously demonstrated in patients with mild-to-moderate idiopathic pulmonary fibrosis (IPF). However, the effect of pirfenidone in patients with advanced IPF remains unclear. Here, we investigated the effects of pirfenidone against advanced IPF in a real-world setting.

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Background: Mortality rates associated with sepsis have increased progressively in Korea, but domestic epidemiologic data remain limited. The objective of this study was to investigate the characteristics, management and clinical outcomes of sepsis patients in Korea.

Methods: This study is a multicenter retrospective cohort study.

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Delirium is an acute, confusional state characterized by altered consciousness and a reduced ability to focus, sustain, or shift attention. It is associated with a number of complex underlying medical conditions and can be difficult to recognize. Many critically ill patients (e.

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