Protocol-Based Resuscitation for Septic Shock: A Meta-Analysis of Randomized Trials and Observational Studies

PURPOSE: Owing to the recommendations of the Surviving Sepsis Campaign guidelines, protocol-based resuscitation or goal-directed therapy (GDT) is broadly advocated for the treatment of septic shock. However, the most recently published trials showed no survival benefit from protocol-based resuscitation in septic shock patients. Hence, we aimed to assess the effect of GDT on clinical outcomes in such patients. MATERIALS AND METHODS: We performed a systematic review that included a meta-analysis. We used electronic search engines including PubMed, Embase, and the Cochrane database to find studies comparing protocol-based GDT to common or standard care in patients with septic shock and severe sepsis. RESULTS: A total of 13269 septic shock patients in 24 studies were included [12 randomized controlled trials (RCTs) and 12 observational studies]. The overall mortality odds ratio (OR) [95% confidence interval (CI)] for GDT versus conventional care was 0.746 (0.631-0.883). In RCTs only, the mortality OR (95% CI) for GDT versus conventional care in the meta-analysis was 0.93 (0.75-1.16). The beneficial effect of GDT decreased as more recent studies were added in an alternative, cumulative meta-analysis. No significant publication bias was found. CONCLUSION: The result of this meta-analysis suggests that GDT reduces mortality in patients with severe sepsis or septic shock. However, our cumulative meta-analysis revealed that the reduction of mortality risk was diminished as more recent studies were added.

Evaluation of Informed Consent for Withholding and Withdrawal of Life Support in Korean Intensive Care Units / 대한중환자의학회지

BACKGROUND: The goal of this study was to analyze the process and characteristics of withholding or withdrawal of life support (WLS) in Korean intensive care units (ICUs). METHODS: This was a single-centered retrospective analysis of patients who died in the ICUs of a tertiary hospital in Korea from January to December 2012. WLS informed consents and clinical data were analyzed. RESULTS: Of 285 deaths during the study period, informed consents for WLS were obtained from 228 patients (80.0%). All WLS decisions were made by family members after the patient's loss of decision-making capacity. Decisions were made most frequently by the patient's son (50.6%). Patients in the WLS group were older than those in the non-WLS group, and older age was associated with the WLS decision. Thirty-seven patients (16.2%) died within one hour of WLS approval, and 182 patients (79.8%) died on the day of WLS approval. The most frequently withheld life support modality was chest compression (100%), followed by defibrillation (95.9%) and pacemaker insertion (63.3%). CONCLUSIONS: Aggressive and invasive life support measures were those most frequently withheld or withdrawn by decision-makers in Korean ICUs. The most common proxy was the son, rather than the spouse.

Evaluation of Informed Consent for Withholding and Withdrawal of Life Support in Korean Intensive Care Units / 대한구급학회지

BACKGROUND: The goal of this study was to analyze the process and characteristics of withholding or withdrawal of life support (WLS) in Korean intensive care units (ICUs). METHODS: This was a single-centered retrospective analysis of patients who died in the ICUs of a tertiary hospital in Korea from January to December 2012. WLS informed consents and clinical data were analyzed. RESULTS: Of 285 deaths during the study period, informed consents for WLS were obtained from 228 patients (80.0%). All WLS decisions were made by family members after the patient's loss of decision-making capacity. Decisions were made most frequently by the patient's son (50.6%). Patients in the WLS group were older than those in the non-WLS group, and older age was associated with the WLS decision. Thirty-seven patients (16.2%) died within one hour of WLS approval, and 182 patients (79.8%) died on the day of WLS approval. The most frequently withheld life support modality was chest compression (100%), followed by defibrillation (95.9%) and pacemaker insertion (63.3%). CONCLUSIONS: Aggressive and invasive life support measures were those most frequently withheld or withdrawn by decision-makers in Korean ICUs. The most common proxy was the son, rather than the spouse.

Acute Myeloid Leukemia in Suspected Sepsis after Caesarean Section / 대한구급학회지

The incidence of acute leukemia during pregnancy is extremely rare, and often it is not easy to differentiate it from other diseases associated with pregnancy such as sepsis or hemorrhage. Pregnancy itself is not known to affect the natural course of leukemia; however, complications of leukemia like anemia, infections, and coagulopathy can adversely influence both the fetus and the mother. In this case, a pregnant patient misdiagnosed with septic shock and severe leukocytosis was correctly diagnosed with acute myeloid leukemia after surgical delivery.

One Hundred Seven Days of ECMO as a Bridge to Lung Transplantation: The Longest Duration Among Elderly Patients / 대한구급학회지

Extracorporeal membrane oxygenation (ECMO) is a means for supporting adequate gas exchange in patients with severe respiratory failure and is the only therapeutic option for ventilation-refractory patients awaiting lung transplantation. Moreover, defining the patients likely to benefit from ECMO as a bridge to transplantation has recently become a point of interest. Here, we report a case of prolonged ECMO support to a patient awaiting lung transplantation. A 66-year-old woman was diagnosed with acute interstitial pneumonia and was placed on veno-venous (VV) ECMO due to unsatisfactory gas exchange despite maximal ventilator care. She underwent bilateral lung transplantation after 99 days of ECMO and was successfully weaned from it on the 107th ECMO day. This is the longest period of ECMO support to be reported among elderly patients.

Implementing a Sepsis Resuscitation Bundle Improved Clinical Outcome: A Before-and-After Study / 대한중환자의학회지

BACKGROUND: Unlike other diseases, the management of sepsis has not been fully integrated in our daily practice. The aim of this study was to determine whether repeated training could improve compliance with a 6-h resuscitation bundle in patients with severe sepsis and septic shock. METHODS: Repeated education regarding a sepsis bundle was provided to the intensive care unit and emergency department residents, nurses, and faculties in a single university hospital. The educational program was led by a multidisciplinary team. A total of 175 adult patients with severe sepsis or septic shock were identified (88 before and 87 after the educational program). Hemodynamic resuscitation bundle and timely antibiotics administration were measured for all cases and mortality at 28 days after sepsis diagnosis was evaluated. RESULTS: The compliance rate for the sepsis resuscitation bundle before the educational program was poor (0%), and repeated training improved it to 80% (p < 0.001). The 28-day mortality was significantly lower in the intervention group (16% vs. 32%, p = 0.040). Within the intervention group, patients for whom the resuscitation bundle was successfully completed had a significantly lower 28-day mortality than other patients (11% vs. 41%, p = 0.004). CONCLUSIONS: Repeated education led by a multidisciplinary team and interdisciplinary communication improved the compliance rate of the 6-h resuscitation bundle in severe sepsis and septic shock patients. Compliance with the sepsis resuscitation bundle was associated with improved 28-day mortality in the study population.

Predicting Delayed Ventilator Weaning after Lung Transplantation: The Role of Body Mass Index / 대한중환자의학회지

BACKGROUND: Weaning from mechanical ventilation is difficult in the intensive care unit (ICU). Many controversial questions remain unanswered concerning the predictors of weaning failure. This study investigates patient characteristics and delayed weaning after lung transplantation. METHODS: This study retrospectively reviewed the medical records of 17 lung transplantation patients from October 2012 to December 2013. Patients able to be weaned from mechanical ventilation within 8 days after surgery were assigned to an early group (n = 9), and the rest of the patients were assigned to the delayed group (n=8). Patients' intraoperative and postoperative characteristics were collected and analyzed, and conventional weaning predictors, including rapid shallow breathing index (RSBI), were also assessed. RESULTS: The results of the early group showed a significantly shorter ICU stay in addition to a shorter hospitalization overall. Notably, the early group had a higher body mass index (BMI) than the delayed group (20.7 vs. 16.9, p = 0.004). In addition, reopening occurred more frequently in the delayed group (1/9 vs. 5/8, p = 0.05). During spontaneous breathing trials, tidal volume (TV) and arterial oxygen tension were significantly higher in the early group compared to the delayed weaning group, but differences in RSBI and respiratory rate (RR) between groups were not statistically significant. CONCLUSIONS: Low BMI might be associated with delayed ventilator weaning in lung transplantation patients. In addition, instead of the traditional weaning predictors of RSBI and RR, TV might be a better predictor for ventilator weaning after lung transplantation.

Green Urine after Propofol Infusion in the Intensive Care Unit / 대한중환자의학회지

Urine discoloration occurs in the intensive care unit (ICU) due to many causes such as medications, metabolic disorders, and infections. Propofol is advocated as one of the first line sedatives in the ICU, but it is not well known to the intensivists that propofol can induce urine color change. We experienced two cases of green urine after propofol infusion. Propofol should be warranted as the cause of urine discoloration during ICU stay.

Implementing a Sepsis Resuscitation Bundle Improved Clinical Outcome: A Before-and-After Study / 대한구급학회지

BACKGROUND: Unlike other diseases, the management of sepsis has not been fully integrated in our daily practice. The aim of this study was to determine whether repeated training could improve compliance with a 6-h resuscitation bundle in patients with severe sepsis and septic shock. METHODS: Repeated education regarding a sepsis bundle was provided to the intensive care unit and emergency department residents, nurses, and faculties in a single university hospital. The educational program was led by a multidisciplinary team. A total of 175 adult patients with severe sepsis or septic shock were identified (88 before and 87 after the educational program). Hemodynamic resuscitation bundle and timely antibiotics administration were measured for all cases and mortality at 28 days after sepsis diagnosis was evaluated. RESULTS: The compliance rate for the sepsis resuscitation bundle before the educational program was poor (0%), and repeated training improved it to 80% (p < 0.001). The 28-day mortality was significantly lower in the intervention group (16% vs. 32%, p = 0.040). Within the intervention group, patients for whom the resuscitation bundle was successfully completed had a significantly lower 28-day mortality than other patients (11% vs. 41%, p = 0.004). CONCLUSIONS: Repeated education led by a multidisciplinary team and interdisciplinary communication improved the compliance rate of the 6-h resuscitation bundle in severe sepsis and septic shock patients. Compliance with the sepsis resuscitation bundle was associated with improved 28-day mortality in the study population.

Predicting Delayed Ventilator Weaning after Lung Transplantation: The Role of Body Mass Index / 대한구급학회지

BACKGROUND: Weaning from mechanical ventilation is difficult in the intensive care unit (ICU). Many controversial questions remain unanswered concerning the predictors of weaning failure. This study investigates patient characteristics and delayed weaning after lung transplantation. METHODS: This study retrospectively reviewed the medical records of 17 lung transplantation patients from October 2012 to December 2013. Patients able to be weaned from mechanical ventilation within 8 days after surgery were assigned to an early group (n = 9), and the rest of the patients were assigned to the delayed group (n=8). Patients' intraoperative and postoperative characteristics were collected and analyzed, and conventional weaning predictors, including rapid shallow breathing index (RSBI), were also assessed. RESULTS: The results of the early group showed a significantly shorter ICU stay in addition to a shorter hospitalization overall. Notably, the early group had a higher body mass index (BMI) than the delayed group (20.7 vs. 16.9, p = 0.004). In addition, reopening occurred more frequently in the delayed group (1/9 vs. 5/8, p = 0.05). During spontaneous breathing trials, tidal volume (TV) and arterial oxygen tension were significantly higher in the early group compared to the delayed weaning group, but differences in RSBI and respiratory rate (RR) between groups were not statistically significant. CONCLUSIONS: Low BMI might be associated with delayed ventilator weaning in lung transplantation patients. In addition, instead of the traditional weaning predictors of RSBI and RR, TV might be a better predictor for ventilator weaning after lung transplantation.

Green Urine after Propofol Infusion in the Intensive Care Unit / 대한구급학회지

Urine discoloration occurs in the intensive care unit (ICU) due to many causes such as medications, metabolic disorders, and infections. Propofol is advocated as one of the first line sedatives in the ICU, but it is not well known to the intensivists that propofol can induce urine color change. We experienced two cases of green urine after propofol infusion. Propofol should be warranted as the cause of urine discoloration during ICU stay.

Avoidable Causes of Delayed Enteral Nutrition in Critically Ill Children

To evaluate the incidence of delayed enteral nutrition (EN) and identify avoidable causes of delay, we retrospectively reviewed medical records of 200 children (median age [range]; 37.5 [1-216] months) who stayed in the intensive care unit (ICU) for a minimum of 3 days. Among 200 children, 115 received EN following ICU admission with a median time of EN initiation of 5 days after admission. Of these, only 22 patients achieved the estimated energy requirement. A significant decrease in the final z score of weight for age from the initial assessment was observed in the non-EN group only (-1.3+/-2.17 to -1.57+/-2.35, P<0.001). More survivors than non-survivors received EN during their ICU stay (61.2% vs 30.0%, P=0.001) and received EN within 72 hr of ICU admission (19.8% vs 3.3%, P=0.033). The most common reason for delayed EN was gastrointestinal (GI) bleeding, followed by altered GI motility and hemodynamic instability. Only eight cases of GI bleeding and one case of altered GI motility were diagnosed as active GI bleeding and ileus, respectively. This study showed that the strategies to reduce avoidable withholding EN are necessary to improve the nutrition status of critically ill children.

A Case of Burkholderia cepacia Pneumonia after Lung Transplantation in a Recipient without Cystic Fibrosis / 대한구급학회지

Burkholderia cepacia is a highly virulent pathogen known to cause opportunistic infections in immunocompromised patients. It accelerates lung disease and causes necrotizing pneumonia with associated severe sepsis, known as cepacia syndrome. In particular, lung transplant recipients infected with Burkholderia cepacia show higher mortality after lung transplantation than those who are not infected with this organism. Due to broad-spectrum antibiotic resistance, a combination therapy should be used according to the results of the susceptibility test. This bacterial infection is rare in Korea, and no case was reported in lung transplant recipients. However, we report a case of pneumonia caused by Burkholderia cepacia after lung transplantation. As Burkholderia cepacia was grown from a sputum culture, the patient was treated initially with a combination of meropenem and trimethoprim/sulfamethoxazole and then ceftazidime and trimethoprim/sulfamethoxazole as a result of leukopenia. After antibiotics treatment for 20 days, sputum cultures became negative for Burkholderia cepacia and the patient successfully recovered.

External Validation of the Acute Physiology and Chronic Health Evaluation II in Korean Intensive Care Units

PURPOSE: This study was designed to validate the usefulness of the Acute Physiology and Chronic Health Evaluation (APACHE) II for predicting hospital mortality of critically ill Korean patients. MATERIALS AND METHODS: We analyzed data on 826 patients who had been admitted to nine intensive care units and were included in the Fever and Antipyretics in Critical Illness Evaluation study cohort. RESULTS: Among the patients enrolled, 62% (512/826) were medical and 38% (314/826) were surgical patients. The median APACHE II score was 17 (11 to 23 interquartile range), and the hospital mortality rate was 19.5%. Age, underlying diseases, medical patients, mechanical ventilation, and renal replacement therapy were independently associated with hospital mortality. The calibration of APACHE II was poor (H=57.54, p<0.0001; C=55.99, p<0.0001), and the discrimination was modest [area under the receiver operating characteristic (aROC)=0.729]. Calibration was poor for both medical and surgical patients (H=63.56, p<0.0001; C=73.83, p<0.0001, and H=33.92, p<0.0001; C=33.34, p=0.0001, respectively), while discrimination was poor for medical patients (aROC=0.651) and modest for surgical patients (aROC=0.704). At the predicted risk of 50%, APACHE II had a sensitivity of 36.6% and a specificity of 87.4% for hospital mortality. CONCLUSION: For Koreans, the APACHE II exhibits poor calibration and modest discrimination for hospital mortality. Therefore, a new model is needed to accurately predict mortality in critically ill Korean patients.

Acute Pulmonary Embolism Due to Free-floating Right Atrial Thrombus in a Patient with Multiple Myeloma: A Case Report / 대한구급학회지

Although venous thrombosis is one of the most frequent complications of malignant disease including multiple myeloma, massive pulmonary embolism is an uncommon complication. Free-floating intracardiac thrombus has been rarely reported as a cause of acute pulmonary embolism in patients with multiple myeloma. We report a case presenting acute pulmonary embolism due to free-floating right atrial thrombus in a patient with multiple myeloma.

Implementation of the Head of Bed (HOB) Elevation Protocol on Clinical and Nutritional Outcomes in Critically Ill Patients with Mechanical Ventilator Support / 대한구급학회지

BACKGROUND: Although head of bed (HOB) elevation is an important strategy to prevent ventilator associated pneumonia (VAP), some observational studies have reported that the application of the semi-recumbent position was lower in patients receiving mechanical ventilator support. We performed this study to assess the effect of implementation of the HOB elevation protocol in the intensive care unit (ICU) on clinical and nutritional outcomes. METHODS: We developed a HOB elevation protocol including a flow chart to determine whether the HOB of newly admitted patients to ICU could be elevated. We measured the level of HOB elevation in patients with mechanical ventilator twice a day and 2 days a week for 5 weeks before and after the implementation of the protocol, respectively. Hemodynamic, respiratory and nutritional data were also collected, resulting in 251 observations from 35 patients and 467 observations from 66 patients before and after implementation. RESULTS: After implementing the protocol, the level of HOB elevation (16.7 +/- 9.9 vs. 23.6 +/-1 2.9, p 30degrees increased significantly (34 vs. 151, p 100 ml) occurred less frequently after implementing the protocol (50% vs. 17%, p = 0.001) CONCLUSIONS: Implementation of the protocol for HOB elevation could improve the level of HOB elevation, oxygenation parameter and enteral nutrition delivery.

The Benefit of Braille for Successful Weaning off Mechanical Ventilation in Congenital Blindness and Hearing Impairment: A Case Report / 대한구급학회지

To achieve adequate depth of sedation and assess the severity of pain in mechanically ventilated patients in the intensive care unit, appropriate communication with the patients is necessary. Communication is also important for successful weaning from the mechanical ventilator as well as weaning predictors, such as respiratory muscle capacity. Here, we present a case report of a 39-year-old man with congenial blindness and hearing impairment who successfully weaned off ventilator support using Braille to communicate under an optimal level of sedation and analgesia after septic shock management.

ICU Acquired Weakness / 대한구급학회지

Critical care has focused on recovery from acute organ failure and resuscitation. Neuromuscular abnormalities related to critical illness is not uncommon in critically ill patients, but they were relatively underestimated and unnoticed. Intensive care unit acquired weakness (ICUAW) leading to severe functional impairments in ICU survivors can be divided into two disease entities: critical illness polyneuropathy (CIP) and critical illness myopathy (CIM). Electrophysiologic study, muscle biopsy and physical examination are helpful to diagnose ICUAW. Several researches and reviews identified many risk factors including systemic inflammation, corticosteroids, hyperglycemia, and immobility. Additional research is needed to identify the pathogenesis of this disorder and to testify its preventive or therapeutic modalities.

Higher dextrose delivery via TPN related to the development of hyperglycemia in non-diabetic critically ill patients

The beneficial effects of total parenteral nutrition (TPN) in improving the nutritional status of malnourished patients during hospital stays have been well established. However, recent randomized trials and meta-analyses have reported an increased rate of TPN-associated complications and mortality in critically ill patients. The increased risk of complications during TPN therapy has been linked to the development of hyperglycemia, especially during the first few days of TPN therapy. This retrospective study was conducted to determine whether the amount of dextrose from TPN in the 1st week in the intensive care unit (ICU) was related to the development of hyperglycemia and the clinical outcome. We included 88 non-diabetic critically ill patients who stayed in the medical ICU for more than two days. The subjects were 65 +/- 16 years old, and the mean APACHE (Acute Physiology and Chronic Health Evaluation) II score upon admission was 20.9 +/- 7.1. The subjects received 2.3 +/- 1.4 g/kg/day of dextrose intravenously. We divided the subjects into two groups according to the mean blood glucose (BG) level during the 1st week of ICU stay: or = 140 mg/dl. Baseline BG and the amount of dextrose delivered via TPN were significantly higher in the hyperglycemia group than those in the normoglycemia group. Mortality was higher in the hyperglycemia group than in the normoglycemia group (42.4% vs 12.8%, P = 0.008). The amount of dextrose from TPN was the only significant variable in the multiple linear regression analysis, which included age, APACHE II score, baseline blood glucose concentration and dextrose delivery via TPN as independent variables. We concluded that the amount of dextrose delivered via TPN might be associated with the development of hyperglycemia in critically ill patients without a history of diabetes mellitus. The amount of dextrose in TPN should be decided and adapted carefully to maintain blood glucose within the target range.

Successful Heart Transplantation after Dobutamine, Glucose-insulin-potassium, and Hormone Therapy in a Hemodynamically Unstable Cadaveric Heart Donor: A Case Report / 대한구급학회지

The major limitation to heart transplantation is the shortage of donor organs. In order to increase the cardiac donor pool, it is important to maintain stable hemodynamics and closely monitor cardiac function in cadaveric organ donors or potent donors. Recently, management of a potential cardiac donor pool has focused on aggressive hemodynamic management protocols and dobutamine stress echocardiography. In our case, management with low dose dobutamine, glucose-insulin-potassium (GIK), and hormone therapy reversed heart failure following brain death and the heart was successfully transplanted. We suggest that aggressive hemodynamic management with low-dose dobutamine, GIK, and hormone therapy can result in the recruitment of more cadaveric hearts in marginal conditions.