Acute and Critical Care

Original Article

Pulmonary
Reduction of PaCO₂ by high-flow nasal cannula in acute hypercapnic respiratory failure patients receiving conventional oxygen therapy: Hyun Woo Lee, Sun Mi Choi, Jinwoo Lee, Young Sik Park, Chang-Hoon Lee, Chul-Gyu Yoo, Young Whan Kim, Sung Koo Han, Sang-Min Lee; Acute Crit Care. 2019;34(3):202-211. Published online August 31, 2019; DOI: https://doi.org/10.4266/acc.2019.00563

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Background
It has been suggested that a high-flow nasal cannula (HFNC) could help to remove carbon dioxide (CO₂) from anatomical dead spaces, but evidence to support that is lacking. The objective of this study was to elucidate whether use of an HFNC could reduce the arterial partial pressure of CO₂ (PaCO₂) in patients with acute hypercapnic respiratory failure who are receiving conventional oxygen (O₂) therapy.
Methods
A propensity score-matched observational study was conducted to evaluate patients treated with an HFNC for acute hypercapnic respiratory failure from 2015 to 2016. The hypercapnia group was defined as patients with a PaCO₂ >50 mm Hg and arterial pH <7.35.
Results
Eighteen patients in the hypercapnia group and 177 patients in the nonhypercapnia group were eligible for the present study. Eighteen patients in each group were matched by propensity score. Decreased PaCO₂ and consequent pH normalization over time occurred in the hypercapnia group (P=0.002 and P=0.005, respectively). The initial PaCO₂ level correlated linearly with PaCO₂ removal after the use of an HFNC (R²=0.378, P=0.010). The fraction of inspired O₂ used in the intensive care unit was consistently higher for 48 hours in the nonhypercapnia group. Physiological parameters such as respiratory rate and arterial partial pressure of O₂ improved over time in both groups.
Conclusions
Physiological parameters can improve after the use of an HFNC in patients with acute hypercapnic respiratory failure given low-flow O₂ therapy via a facial mask. Further studies are needed to identify which hypercapnic patients might benefit from an HFNC.

Citations

Citations to this article as recorded by

Comparison of preoxygenation with a high-flow nasal cannula and a simple face mask before intubation in patients with head and neck cancer
Jun-Young Jo, Jungpil Yoon, Heeyoon Jang, Wook-Jong Kim, Seungwoo Ku, Seong-Soo Choi
Acute and Critical Care.2024; 39(1): 61. CrossRef
Efficacy and safety of high-flow nasal cannula therapy in elderly patients with acute respiratory failure
J.M. Carratalá, S. Diaz-Lobato, B. Brouzet, P. Más-Serrano, J.L.S. Rocamora, A.G. Castro, A.G. Varela, S.M. Alises
Pulmonology.2023;[Epub] CrossRef
Successful noninvasive ventilation in a severely acidotic and hypercapnic comatose COVID-19 patient with multiple comorbidities: a case report
Joseph Abraham Poonuraparampil, Habib Md Reazaul Karim, Manu P Kesavankutty, Porika Prashanth Nayak
Acute and Critical Care.2022; 37(1): 120. CrossRef
Comparison of Conventional Oxygen Therapy With High-Flow Nasal Oxygenation in the Management of Hypercapnic Respiratory Failure
Jitendra Pratap Singh, Deepak Malviya, Samiksha Parashar, Soumya Sankar Nath, Archana Gautam, Neha Shrivastava
Cureus.2022;[Epub] CrossRef
Current Considerations in Emergency Airway Management
Andrew Pirotte, Vivek Panchananam, Matthew Finley, Austin Petz, Tom Herrmann
Current Emergency and Hospital Medicine Reports.2022; 10(4): 73. CrossRef
S/F and ROX indices in predicting failure of high‐flow nasal cannula in children
Ji Hye Kim, Dong In Suh, June Dong Park
Pediatrics International.2022;[Epub] CrossRef
Nasal High‐flow Oxygen Versus Conventional Oxygen Therapy for Acute Severe Asthma Patients: A Pilot Randomized Controlled Trial
Onlak Ruangsomboon, Chok Limsuwat, Nattakarn Praphruetkit, Apichaya Monsomboon, Tipa Chakorn, Brian C. Hiestand
Academic Emergency Medicine.2021; 28(5): 530. CrossRef
Flow Field Analysis of Adult High-Flow Nasal Cannula Oxygen Therapy
Jingen Xia, Jiaqi Chang, Jixiang Liang, Yixuan Wang, Na Wang, Bo Xiao
Complexity.2021; 2021: 1. CrossRef
Treatment of Severe Acute on Chronic Liver Failure
Aarshi Vipani, Christina C. Lindenmeyer, Vinay Sundaram
Journal of Clinical Gastroenterology.2021; 55(8): 667. CrossRef
Efficacy of High-Flow Nasal Cannula Oxygen Therapy in Patients with Mild Hypercapnia
Lingling Su, Qinyu Zhao, Taotao Liu, Yujun Xu, Weichun Li, Aiping Zhang
Lung.2021; 199(5): 447. CrossRef
High-Flow Nasal Cannula Oxygen Therapy Can Be Effective for Patients in Acute Hypoxemic Respiratory Failure with Hypercapnia: a Retrospective, Propensity Score-Matched Cohort Study
SooHyun Bae, Minkyu Han, Changyoung Kim, Hyeji Lee, Jong-Joon Ahn, Jin Hyoung Kim, Byung Ju Kang
Journal of Korean Medical Science.2020;[Epub] CrossRef
High-flow nasal cannula oxygen therapy as an emerging option for respiratory failure: the present and the future
Lucia Spicuzza, Matteo Schisano
Therapeutic Advances in Chronic Disease.2020; 11: 204062232092010. CrossRef
Impact of High-Flow Nasal Cannula on Arterial Blood Gas Parameters in the Emergency Department
Emre Şancı, Feride Ercan Coşkun, Basak Bayram
Cureus.2020;[Epub] CrossRef

Case Report

Pulmonary
Lung injury associated with inhalation of effective microorganism blends: Jee-min Kim, Yoon Jin Kwak, Ho Il Yoon; Acute Crit Care. 2020;35(2):122-126. Published online April 8, 2019; DOI: https://doi.org/10.4266/acc.2018.00332

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Abstract PDF: Since 2009, effective microorganisms (EMs) have been supplied by the local government to the citizens of Seongnam, Korea, for various environment-protective uses including manufacturing detergents, cosmetics and humidifier disinfectants. A 68-year-old man who had placed an EM blends into a humidifier for inhalation visited the emergency room with complaints of fever and dyspnea. He was in a shock state with hypoxia. Chest computed tomography revealed diffuse ground-glass opacities that were dominant in the bilateral upper lobes. Fiberoptic bronchoscopy with bronchoalveolar lavage and transbronchial lung biopsy was performed. Bronchoalveolar lavage fluid analysis and biopsy findings were consistent with alveolar hemorrhage. All microbiological and virological test results were negative. His symptoms and radiographic opacities had improved markedly after several days of conservative care, and he was discharged healthy after 1 week of hospital stay.

Original Article

Pulmonary
Global and Regional Ventilation during High Flow Nasal Cannula in Patients with Hypoxia: Dong Hyun Lee, Eun Young Kim, Ga Jin Seo, Hee Jung Suh, Jin Won Huh, Sang-Bum Hong, Younsuck Koh, Chae-Man Lim; Acute Crit Care. 2018;33(1):7-15. Published online January 22, 2018; DOI: https://doi.org/10.4266/acc.2017.00507; Correction in: Acute Crit Care 2021;36(2):173

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Abstract PDF

Background
High flow nasal cannula (HFNC) is known to increase global ventilation volume in healthy subjects. We sought to investigate the effect of HFNC on global and regional ventilation patterns in patients with hypoxia.
Methods
Patients were randomized to receive one of two oxygen therapies in sequence: nasal cannula (NC) followed by HFNC or HFNC followed by NC. Global and regional ventilation was assessed using electric impedance tomography.
Results
Twenty-four patients participated. Global tidal variation (TV) in the lung was higher during HFNC (NC, 2,241 ± 1,381 arbitrary units (AU); HFNC, 2,543 ± 1,534 AU; P < 0.001). Regional TVs for four iso-gravitational quadrants of the lung were also all higher during HFNC than NC. The coefficient of variation for the four quadrants of the lung was 0.90 ± 0.61 during NC and 0.77 ± 0.48 during HFNC (P = 0.035). Within the four gravitational layers of the lung, regional TVs were higher in the two middle layers during HFNC when compared to NC. Regional TV values in the most ventral and dorsal layers of the lung were not higher during HFNC compared with NC. The coefficient of variation for the four gravitational layers of the lung were 1.00 ± 0.57 during NC and 0.97 ± 0.42 during HFNC (P = 0.574).
Conclusions
In patients with hypoxia, ventilation of iso-gravitational regions of the lung during HFNC was higher and more homogenized compared with NC. However, ventilation of gravitational layers increased only in the middle layers. (Clinical trials registration number: NCT02943863).

Citations

Citations to this article as recorded by

High-flow nasal cannulae for respiratory support in adult intensive care patients
Sharon R Lewis, Philip E Baker, Roses Parker, Andrew F Smith
Cochrane Database of Systematic Reviews.2021;[Epub] CrossRef
Failure of High-Flow Nasal Cannula Therapy in Pneumonia and Non-Pneumonia Sepsis Patients: A Prospective Cohort Study
Eunhye Kim, Kyeongman Jeon, Dong Kyu Oh, Young-Jae Cho, Sang-Bum Hong, Yeon Joo Lee, Sang-Min Lee, Gee Young Suh, Mi-Hyeon Park, Chae-Man Lim, Sunghoon Park
Journal of Clinical Medicine.2021; 10(16): 3587. CrossRef
High-flow nasal cannulae for respiratory support in adult intensive care patients
Sharon R Lewis, Philip E Baker, Roses Parker, Andrew F Smith
Cochrane Database of Systematic Reviews.2017;[Epub] CrossRef

Review

Surgery
Management of Critical Burn Injuries: Recent Developments: David J. Dries, John J. Marini; Korean J Crit Care Med. 2017;32(1):9-21. Published online February 17, 2017; DOI: https://doi.org/10.4266/kjccm.2016.00969

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Abstract PDF

Background
Burn injury and its subsequent multisystem effects are commonly encountered by acute care practitioners. Resuscitation is the major component of initial burn care and must be managed to restore and preserve vital organ function. Later complications of burn injury are dominated by infection. Burn centers are often called to manage problems related to thermal injury, including lightning and electrical injuries.
Methods
A selected review is provided of key management concepts as well as of recent reports published by the American Burn Association.
Results
The burn-injured patient is easily and frequently over resuscitated, with ensuing complications that include delayed wound healing and respiratory compromise. A feedback protocol designed to limit the occurrence of excessive resuscitation has been proposed, but no new “gold standard” for resuscitation has replaced the venerated Parkland formula. While new medical therapies have been proposed for patients sustaining inhalation injury, a paradigm-shifting standard of medical therapy has not emerged. Renal failure as a specific contributor to adverse outcome in burns has been reinforced by recent data. Of special problems addressed in burn centers, electrical injuries pose multisystem physiologic challenges and do not fit typical scoring systems.
Conclusion
Recent reports emphasize the dangers of over resuscitation in the setting of burn injury. No new medical therapy for inhalation injury has been generally adopted, but new standards for description of burn-related infections have been presented. The value of the burn center in care of the problems of electrical exposure, both manmade and natural, is demonstrated in recent reports.

Citations

Citations to this article as recorded by

Prevalence and Trend of Depression in Burn Survivors: A Single Center Cohort Study
V S Ranganath, Smitha Segu, B S Girish, Joel M Johns, C S Meghana
Journal of Burn Care & Research.2024;[Epub] CrossRef
SUBMICROSCOPIC CHANGES IN THE HEMOCAPILLARIES OF THE CEREBRAL HEMISCLE CAUSES CAUSED BY THERMAL BURN
H. V. Lukyantseva, V. A. Pastukhova, O. I. Kovalchuk
Bulletin of Problems Biology and Medicine.2021; 3(1): 268. CrossRef
Kefir Accelerates Burn Wound Healing Through Inducing Fibroblast Cell Migration In Vitro and Modulating the Expression of IL-1ß, TGF-ß1, and bFGF Genes In Vivo
Ahmad Oryan, Esmat Alemzadeh, Mohammad Hadi Eskandari
Probiotics and Antimicrobial Proteins.2019; 11(3): 874. CrossRef
Viable placental allograft as a biological dressing in the clinical management of full-thickness thermal occupational burns
Eric L. Johnson, Elisabet K. Tassis, Georgina M. Michael, Susan G. Whittinghill
Medicine.2017; 96(49): e9045. CrossRef

Case Report

Pulmonary
Lung Transplantation for Chronic Humidifier Disinfectant-Associated Lung Injury: Won-Young Kim, So-Woon Kim, Kyung-Wook Jo, Sae Hoon Choi, Hyung Ryul Kim, Yong-Hee Kim, Dong Kwan Kim, Seung-Il Park, Sang-Bum Hong; Korean J Crit Care Med. 2016;31(2):146-151. Published online May 31, 2016; DOI: https://doi.org/10.4266/kjccm.2016.31.2.146

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Abstract PDF

In the spring of 2011, a cluster of lung injuries caused by humidifier disinfectant (HD) usage were reported in Korea. Many patients required mechanical ventilation, extracorporeal membrane oxygenation, and even lung transplantation (LTPL). However, the long-term course of HD-associated lung injury remains unclear because the majority of survivors recovered normal lung function. Here we report a 33-year-old woman who underwent LTPL approximately four years after severe HD-associated lung injury. The patient was initially admitted to the intensive care unit and was supported by a high-flow nasal cannula. Although she had been discharged, she was recurrently admitted to our hospital due to progressive lung fibrosis and a persistent decline in lung function. Finally, sequential double LTPL was successfully performed, and the patient’s clinical and radiological findings showed significant improvement. Therefore, we conclude that LTPL can be a therapeutic option for patients with chronic inhalation injury.

Citations

Citations to this article as recorded by

Humidifier Disinfectant-Associated Lung Injury: Six Years after the Tragic Event
Won-Young Kim, Sang-Bum Hong
Tuberculosis and Respiratory Diseases.2017; 80(4): 351. CrossRef

Original Articles

Diagnosis of Acid-base Imbalance by Stewart's Physicochemical Approach and Mortality Prediction in Severe Burn Patients with Inhalation Injury: Sunghoon Park, Cheol Hong Kim, In Gyu Hyun, Ki Suck Jung; Korean J Crit Care Med. 2006;21(1):17-27.

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Abstract PDF: BACKGROUND
Acid-base derangement are commonly encountered in critically ill patients. This study is to investigate underlying mechanisms of acid-base imbalance and also to examine whether they can predict mortality in burn patients.
METHODS
We retrospectively reviewed 73 severely burned patients who had admitted to burn intensive care unit, from January to July in 2004. All the patients had inhalation injury, identified by bronchoscopic examination. We analyzed the type and nature of the acid-base imbalances from arterial blood gas analysis, electrolytes and other biological tests between survivors and non-survivors for 30 days after admission.
RESULTS
Acidosis was the most common disorder during the early and late hospital periods. Large fractions of those showed decreased strong ion difference (SID), increased anion gap corrected by albumin (AGc) and [Cl-]corrected. Mixed disorder and alkalosis emerged after the 7(th) hospital day. As time went by, albumin, PaO2/FiO2 ratio, pH and SID were more decreased in non-survivors (n=28) than in survivors (n=45) while [Cl-] corrected, alveolar-arterial oxygen tension gradients, peripheral WBC counts and CRP were more increased in non-survivors than in survivors. In the area under the receiver operating characteristic curves for mortality prediction, APACHE II score and % of total body surface area (%TBSA) burn were high: 0.866 (95% CI; 0.785~0.946) for APACHE II score, 0.817 (95% CI; 0.717~0.918) for %TBSA burn.
CONCLUSIONS
In burned patients with inhalation injury, various types of acid-base imbalances and electrolytes abnormalities emerged after resuscitation and so, more careful attentions pursued for correcting underlying acid-base derangement.

The Inhaled Nitric Oxide in Acute Respiratory Distress Syndrome: from a Bedside to a Bench: Younsuck Koh; Korean J Crit Care Med. 2001;16(2):65-74.

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Abstract PDF: Because inhaled nitric oxide (NO) induces selective vasodilation of well-ventilated lung regions diverting pulmonary artery blood flow towards these well-ventilated alveoli, it has been applied to some of ARDS patients, who show severe hypoxemia despite of positive pressure ventilation with moderate to high positive end-expiratory pressure. The beneficial effect of inhaled NO on oxygenation was lower than 5 ppm of inhaled NO and the maximum effect was about 10 ppm in patients with ARDS according to the studies. Combinations of inhaled NO with various therapies, such as the use of intravenous almitrine or phenylephrine, and prone positioning may produce additive effects on oxygenation. Approximately 65% of patients had response to inhaled NO in studies of critically ill patients with ARDS who were ventilated with less than 40 ppm of inhaled NO. However, there was no survival benefit by inhaled NO in a multicenter phase 2 trial with 177 patients of non-septic ARDS. It is unclear whether inhaled NO exerts detrimental or beneficial effects in the pathogenesis of ARDS. Laboratory studies suggest that inhaled NO has important effects in reducing some forms of lung and tissue injury. If these effects are clinically significant, early and continued therapy with inhaled NO could potentially reduce the severity of some forms of lung injury. In contrast, NO and nitrite interacted with neutrophil myeloperoxidase to stimulate oxidative reactions during inflammation. In summary, NO inhalation would be acceptable as a rescue therapy in severe ARDS without serious complications related to the application. In addition, the effect of inhaled NO on the pathophysiology of ARDS should be elucidated.

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