Acute and Critical Care

Original Articles

Pulmonary
The role of ROX index–based intubation in COVID-19 pneumonia: a cross-sectional comparison and retrospective survival analysis: Sara Vergis, Sam Philip, Vergis Paul, Manjit George, Nevil C Philip, Mithu Tomy; Acute Crit Care. 2023;38(2):182-189. Published online May 25, 2023; DOI: https://doi.org/10.4266/acc.2022.00206

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Abstract PDF: Background
Coronavirus disease 2019 (COVID-19) patients with acute respiratory failure who experience delayed initiation of invasive mechanical ventilation have poor outcomes. The lack of objective measures to define the timing of intubation is an area of concern. We investigated the effect of timing of intubation based on respiratory rate-oxygenation (ROX) index on the outcomes of COVID-19 pneumonia. Methods: This was a retrospective cross-sectional study performed in a tertiary care teaching hospital in Kerala, India. Patients with COVID-19 pneumonia who were intubated were grouped into early intubation (within 12 hours of ROX index <4.88) or delayed intubation (12 hours or more hours after ROX <4.88). Results: A total of 58 patients was included in the study after exclusions. Among them, 20 patients were intubated early, and 38 patients were intubated 12 hours after ROX index <4.88. The mean age of the study population was 57±14 years, and 55.0% of the patients were male; diabetes mellitus (48.3%) and hypertension (50.0%) were the most common comorbidities. The early intubation group had 88.2% successful extubation, while only 11.8% of the delayed group had successful extubation (P<0.001). Survival was also significantly more frequent in the early intubation group. Conclusions: Early intubation within 12 hours of ROX index <4.88 was associated with improved extubation and survival in patients with COVID-19 pneumonia.

Trauma
Association of Glasgow coma scale and endotracheal intubation in predicting mortality among patients admitted to the intensive care unit: Nader Markazi Moghaddam, Mohammad Fathi, Sanaz Zargar Balaye Jame, Mohammad Darvishi, Morteza Mortazavi; Acute Crit Care. 2023;38(1):113-121. Published online February 22, 2023; DOI: https://doi.org/10.4266/acc.2022.00927

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Abstract PDF: Background
We assessed predictors of mortality in the intensive care unit (ICU) and investigated if Glasgow coma scale (GCS) is associated with mortality in patients undergoing endotracheal intubation (EI). Methods: From February 2020, we performed a 1-year study on 2,055 adult patients admitted to the ICU of two teaching hospitals. The outcome was mortality during ICU stay and the predictors were patients’ demographic, clinical, and laboratory features. Results: EI was associated with a decreased risk for mortality compared with similar patients (adjusted odds ratio [AOR], 0.32; P=0.030). This shows that EI had been performed correctly with proper indications. Increasing age (AOR, 1.04; P<0.001) or blood pressure (AOR, 1.01; P<0.001), respiratory problems (AOR, 3.24; P<0.001), nosocomial infection (AOR, 1.64; P=0.014), diabetes (AOR, 5.69; P<0.001), history of myocardial infarction (AOR, 2.52; P<0.001), chronic obstructive pulmonary disease (AOR, 3.93; P<0.001), immunosuppression (AOR, 3.15; P<0.001), and the use of anesthetics/sedatives/hypnotics for reasons other than EI (AOR, 4.60; P<0.001) were directly; and GCS (AOR, 0.84; P<0.001) was inversely related to mortality. In patients with trauma surgeries (AOR, 0.62; P=0.014) or other surgical categories (AOR, 0.61; P=0.024) undergoing EI, GCS had an inverse relation with mortality (accuracy=82.6%, area under the receiver operator characteristic curve=0.81). Conclusions: A variety of features affected the risk for mortality in patients admitted to the ICU. Considering GCS score for EI had the potential of affecting prognosis in subgroups of patients such as those with trauma surgeries or other surgical categories.

Liver
Early mechanical ventilation for grade IV hepatic encephalopathy is associated with increased mortality among patients with cirrhosis: an exploratory study: Saad Saffo, Guadalupe Garcia-Tsao; Acute Crit Care. 2022;37(3):355-362. Published online August 18, 2022; DOI: https://doi.org/10.4266/acc.2022.00528

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Abstract PDF

Background
Unresponsive patients with toxic-metabolic encephalopathies often undergo endotracheal intubation for the primary purpose of preventing aspiration events. However, among patients with pre-existing systemic comorbidities, mechanical ventilation itself may be associated with numerous risks such as hypotension, aspiration, delirium, and infection. Our primary aim was to determine whether early mechanical ventilation for airway protection was associated with increased mortality in patients with cirrhosis and grade IV hepatic encephalopathy.
Methods
The National Inpatient Sample was queried for hospital stays due to grade IV hepatic encephalopathy among patients with cirrhosis between 2016 and 2019. After applying our exclusion criteria, including cardiopulmonary failure, data from 1,975 inpatient stays were analyzed. Patients who received mechanical ventilation within 2 days of admission were compared to those who did not. Univariable and multivariable logistic regression analyses were performed to identify clinical factors associated with in-hospital mortality.
Results
Of 162 patients who received endotracheal intubation during the first 2 hospital days, 64 (40%) died during their hospitalization, in comparison to 336 (19%) of 1,813 patients in the comparator group. In multivariable logistic regression analysis, mechanical ventilation was the strongest predictor of in-hospital mortality in our primary analysis (adjusted odds ratio, 3.00; 95% confidence interval, 2.14–4.20; P<0.001) and in all sensitivity analyses.
Conclusions
Mechanical ventilation for the sole purpose of airway protection among patients with cirrhosis and grade IV hepatic encephalopathy may be associated with increased in-hospital mortality. Future studies are necessary to confirm and further characterize our findings.

Citations

Citations to this article as recorded by

Development and validation of a nomogram for predicting in-hospital mortality of intensive care unit patients with liver cirrhosis
Xiao-Wei Tang, Wen-Sen Ren, Shu Huang, Kang Zou, Huan Xu, Xiao-Min Shi, Wei Zhang, Lei Shi, Mu-Han Lü
World Journal of Hepatology.2024; 16(4): 625. CrossRef
Review article: Evaluation and care of the critically ill patient with cirrhosis
Iva Kosuta, Madhumita Premkumar, K. Rajender Reddy
Alimentary Pharmacology & Therapeutics.2024; 59(12): 1489. CrossRef
Using machine learning methods to predict 28-day mortality in patients with hepatic encephalopathy
Zhe Zhang, Jian Wang, Wei Han, Li Zhao
BMC Gastroenterology.2023;[Epub] CrossRef
Experience in Non-invasive Ventilation in Grade 3 Hepatic Encephalopathy
İlhan Ocak, Mustafa Çolak, Erdem Kınacı
Istanbul Medical Journal.2023; 24(3): 295. CrossRef

Pulmonary
Under or overpressure: an audit of endotracheal cuff pressure monitoring at the tertiary care center: Biju Viswambharan, Manjini Jeyaram Kumari, Gopala Krishnan, Lakshmi Ramamoorthy; Acute Crit Care. 2021;36(4):374-379. Published online November 26, 2021; DOI: https://doi.org/10.4266/acc.2021.00024

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Abstract PDF

Background
Mechanical ventilation is a lifesaving intervention for critically ill patients but can produce the major complication of ventilator-associated pneumonia (VAP). Inappropriately inflated endotracheal tubes cause potential harm due to high or low pressure; this can be prevented through monitoring protocols.
Methods
A cross-sectional study of 348 cuff pressure readings was performed with intubated and mechanically ventilated patients to evaluate the exact proportion of patients in intensive care units (ICUs) where the cuff pressure is optimal and to identify the ICUs where device-based monitoring is available to produce a lower proportion of sub-optimal cuff pressure cases. Every three days, cuff pressure was assessed with a handheld cuff pressure manometer. The corresponding VAP rates of those ICUs were obtained from the hospital infection control department.
Results
Cuff pressure of 40.2% was the lower cutoff for the high category, that of optimal was 35.3%, and the highest cutoff of sub-optimal was 24.4%. This study also showed ICUs that had cuff pressure monitoring devices and protocols. Active measurement protocols had a higher proportion of optimal cuff pressure (58.5%) and a lower proportion of sub-optimal and high cuff pressure (19.5% and 22.0%) compared to ICUs with no device-based monitoring protocols. Furthermore, the VAP rate of ICUs exhibited a weak positive correlation with sub-optimal cuff pressure.
Conclusions
Device-based cuff pressure monitoring is essential in maintaining adequate cuff pressure but often is inadequate, resulting in high readings. Therefore, this study suggests that device-based cuff pressure monitoring be practiced.

Citations

Citations to this article as recorded by

Pressure changes in the endotracheal tube cuff in otorhinolaryngologic surgery: a prospective observational study
Sujung Park, Young In Kwon, Hyun Joo Kim
Frontiers in Medicine.2023;[Epub] CrossRef
Correlación entre la presión del manguito del tubo endotraqueal y los síntomas laringotraqueales en postoperatorio
Wedley Peñaloza, Reyes Cruz Manuel Reyes, Evelin Núñez Wong
Revista Gaceta Médica JBG.2023;[Epub] CrossRef
Efficacy of using an intravenous catheter to repair damaged expansion lines of endotracheal tubes and laryngeal masks
Tingting Wang, Jiang Wang, Yao Lu, Xuesheng Liu, Shangui Chen
BMC Anesthesiology.2022;[Epub] CrossRef

Nursing
Effect of modified care bundle for prevention of ventilator-associated pneumonia in critically-ill neurosurgical patients: Suphannee Triamvisit, Wassana Wongprasert, Chalermwoot Puttima, Matchima Na Chiangmai, Nawaphan Thienjindakul, Laksika Rodkul, Chumpon Jetjumnong; Acute Crit Care. 2021;36(4):294-299. Published online November 23, 2021; DOI: https://doi.org/10.4266/acc.2021.00983

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Abstract PDF: Background
Care bundles for ventilator-associated pneumonia (VAP) have been shown to minimize the rate of VAP in critically ill patients. Standard care bundles may need to be modified in resource-constrained situations. The goal of this study was to see if our modified VAP-care bundles lowered the risk of VAP in neurosurgical patients.
Methods
A prospective cohort study was conducted in mechanically ventilated neurosurgical patients. The VAP bundle was adjusted in the cohort group by increasing the frequency of intermittent endotracheal tube cuff pressure monitoring to six times a day while reducing oral care with 0.12% chlorhexidine to three times a day. The rate of VAP was compared to the historical control group.
Results
A total of 146 and 145 patients were enrolled in control and cohort groups, respectively. The mean age of patients was 52±16 years in both groups (P=0.803). The admission Glasgow coma scores were 7.79±2.67 and 7.80±2.77 in control and cohort group, respectively (P=0.969). VAP was found in nine patients in control group but only one patient in cohort group. The occurrence rate of VAP was significantly reduced in cohort group compared to control group (0.88/1,000 vs. 6.84/1,000 ventilator days, P=0.036).
Conclusions
The modified VAP bundle is effective in lowering the VAP rate in critically ill neurosurgical patients. It requires low budget and manpower and can be employed in resource-constrained settings.

CPR/Resuscitation
Risk factors associated with inpatient cardiac arrest during emergency endotracheal intubation at general wards: Chul Park; Acute Crit Care. 2019;34(3):212-218. Published online August 31, 2019; DOI: https://doi.org/10.4266/acc.2019.00598; Correction in: Acute Crit Care 2020;35(3):228

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Abstract PDF

Background
Peri-intubation cardiac arrest (PICA) following emergent endotracheal intubation (ETI) is a rare, however, potentially preventable type of cardiac arrest. Limited published data have described factors associated with inpatient PICA and patient outcomes. The aim of this study was to identify risk factors associated with PICA among hospitalized patients emergently intubated at a general ward as compared to non-PICA inpatients. In addition, we identified a difference of clinical outcomes in patients between PICA and other types of inpatient cardiac arrest (OTICA).
Methods
We conducted a retrospective observational study of patients at two institutions between January 2016 to December 2017. PICA was defined in patients emergently intubated who experienced cardiac arrest within 20 minutes after ETI. The non-PICA group consisted of inpatients emergently intubated without cardiac arrest. Risk factors for PICA were identified through univariate and multivariate logistic regression analysis. Clinical outcomes were compared between PICA and OTICA.
Results
Fifteen episodes of PICA occurred during the study period, accounting for 3.6% of all inpatient arrests. Intubation-related shock index, number of intubation attempts, pre-ETI vasopressor use, and neuromuscular blocking agent (NMBA) use, especially succinylcholine, were independently associated with PICA. Clinical outcomes of intensive care unit and hospital length of stay, survival to discharge, and neurologic outcome at hospital discharge were not significantly different between PICA and OTICA.
Conclusions
We identified four independent risk factors for PICA, and preintubation hemodynamic stabilization and avoidance of NMBA were possibly correlated with a decreased PICA risk. Clinical outcomes of PICA were similar to those of OTICA.

Citations

Citations to this article as recorded by

Risk factors for peri-intubation cardiac arrest: A systematic review and meta-analysis
Ting-Hao Yang, Shih-Chieh Shao, Yi-Chih Lee, Chien-Han Hsiao, Chieh-Ching Yen
Biomedical Journal.2024; 47(3): 100656. CrossRef
Reverse shock index (RSI) as a predictor of post-intubation cardiac arrest (PICA)
Mehdi Torabi, Ghazal Soleimani Mahani, Moghaddameh Mirzaee
International Journal of Emergency Medicine.2023;[Epub] CrossRef
Incidence and factors associated with out-of-hospital peri-intubation cardiac arrest: a secondary analysis of the CURASMUR trial
Cédric Gil-Jardiné, Patricia Jabre, Frederic Adnet, Thomas Nicol, Patrick Ecollan, Bertrand Guihard, Cyril Ferdynus, Valery Bocquet, Xavier Combes
Internal and Emergency Medicine.2022; 17(2): 611. CrossRef
Risk factors associated with peri-intubation cardiac arrest in the emergency department
Ting-Hao Yang, Kuan-Fu Chen, Shi-Ying Gao, Chih-Chuan Lin
The American Journal of Emergency Medicine.2022; 58: 229. CrossRef
Comparison of video-stylet and conventional laryngoscope for endotracheal intubation in adults with cervical spine immobilization: A PRISMA-compliant meta-analysis
I-Wen Chen, Yu-Yu Li, Kuo-Chuan Hung, Ying-Jen Chang, Jen-Yin Chen, Ming-Chung Lin, Kuei-Fen Wang, Chien-Ming Lin, Ping-Wen Huang, Cheuk-Kwan Sun
Medicine.2022; 101(33): e30032. CrossRef
Peri-Intubation Cardiorespiratory Arrest Risk in Pediatric Patients: A Systematic Review
Rohit S. Loomba, Riddhi Patel, Elizabeth Kunnel, Enrique G. Villarreal, Juan S. Farias, Saul Flores
Journal of Pediatric Intensive Care.2022;[Epub] CrossRef
Comparison of Suction Rates Between a Standard Yankauer, a Commercial Large-Bore Suction Device, and a Makeshift Large-Bore Suction Device
Dhimitri A. Nikolla, Briana King, Andrew Heslin, Jestin N. Carlson
The Journal of Emergency Medicine.2021; 61(3): 265. CrossRef
Emergency Airway Management Outside the Operating Room: Current Evidence and Management Strategies
Kunal Karamchandani, Jonathan Wheelwright, Ae Lim Yang, Nathaniel D. Westphal, Ashish K. Khanna, Sheila N. Myatra
Anesthesia & Analgesia.2021; 133(3): 648. CrossRef
Further Validation of a Novel Acute Myocardial Infarction Risk Stratification (nARS) System for Patients with Acute Myocardial Infarction
Shinnosuke Sawano, Kenichi Sakakura, Kei Yamamoto, Yousuke Taniguchi, Takunori Tsukui, Masaru Seguchi, Hiroshi Wada, Shin-ichi Momomura, Hideo Fujita
International Heart Journal.2020; 61(3): 463. CrossRef
Corrigendum to: Risk factors associated with inpatient cardiac arrest during emergency endotracheal intubation at general wards
Chul Park
Acute and Critical Care.2020; 35(3): 228. CrossRef

Pulmonary
Clinical Application of Modified Burns Wean Assessment Program Scores at First Spontaneous Breathing Trial in Weaning Patients from Mechanical Ventilation: Eun Suk Jeong, Kwangha Lee; Acute Crit Care. 2018;33(4):260-268. Published online November 30, 2018; DOI: https://doi.org/10.4266/acc.2018.00276

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Abstract PDF

Background
The purpose of this study was to evaluate the clinical application of modified Burns Wean Assessment Program (m-BWAP) scoring at first spontaneous breathing trial (SBT) as a predictor of successful liberation from mechanical ventilation (MV) in patients with endotracheal intubation.
Methods
Patients requiring MV for more than 72 hours and undergoing more than one SBT in a medical intensive care unit (ICU) were prospectively enrolled over a 3-year period. The m-BWAP score at first SBT was obtained by a critical care nursing practitioner.
Results
A total of 103 subjects were included in this study. Their median age was 69 years (range, 22 to 87 years) and 72 subjects (69.9%) were male. The median duration from admission to first SBT was 5 days (range, 3 to 26 days), and the rate of final successful liberation from MV was 84.5% (n=87). In the total group of patients, the successful liberation from MV group at first SBT (n=65) had significantly higher m-BWAP scores than did the unsuccessful group (median, 60; range, 43 to 80 vs. median, 53; range, 33 to 70; P<0.001). Also, the area under the m-BWAP curve for predicting successful liberation of MV was 0.748 (95% confidence interval, 0.650 to 0.847), while the cutoff value based on Youden’s index was 53 (sensitivity, 76%; specificity, 64%).
Conclusions
The present data show that the m-BWAP score represents a good predictor of weaning success in patients with an endotracheal tube in place at first SBT.

Citations

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What do we know about experiencing end-of-life in burn intensive care units? A scoping review
André Filipe Ribeiro, Sandra Martins Pereira, Rui Nunes, Pablo Hernández-Marrero
Palliative and Supportive Care.2023; 21(4): 741. CrossRef
Effect of a Japanese Version of the Burns Wean Assessment Program e-Learning Materials on Ventilator Withdrawal for Intensive Care Unit Nurses
Rika KIMURA, Naoko HAYASHI, Akemi UTSUNOMIYA
Journal of Nursing Research.2023; 31(4): e287. CrossRef
Value of modified Burns Wean Assessment Program scores in the respiratory intensive care unit: An Egyptian study
Nermeen A. Abdelaleem, Sherif A.A. Mohamed, Azza S. Abd ElHafeez, Hassan A. Bayoumi
Multidisciplinary Respiratory Medicine.2020;[Epub] CrossRef
Protecting Postextubation Respiratory Failure and Reintubation by High-Flow Nasal Cannula Compared to Low-Flow Oxygen System: Single Center Retrospective Study and Literature Review
Minhyeok Lee, Ji Hye Kim, In Beom Jeong, Ji Woong Son, Moon Jun Na, Sun Jung Kwon
Acute and Critical Care.2019; 34(1): 60. CrossRef

Case Report

Pulmonary
A Reinforced Endotracheal Tube Completely Severed by a Patient Bite and Lodged in the Right Main Bronchus: Susie Yoon, Hyunjung Choo, Se Eun Kim, Heeyeon Kwon, Hannah Lee; Korean J Crit Care Med. 2017;32(1):70-73. Published online November 14, 2016; DOI: https://doi.org/10.4266/kjccm.2016.00437

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Abstract PDF

Reinforced endotracheal tubes (ETTs) are designed to resist kinking or compression. However, these have a potential risk of being obstructed or severed by a patient’s bite. We report a case in which a reinforced ETT was severed by tube-bite while the patient was in the prone position during an intensive care unit stay. Bronchoscopic evaluation showed that the severed distal part of the tube had lodged in the patient’s right main bronchus, and it had to be surgically removed. The patency of reinforced ETTs should be carefully monitored in patients intubated in the prone position.

Citations

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Anaesthesia for reconstructive free flap surgery for head and neck cancer
Peter McCauley, Michael Moore, Edel Duggan
British Journal of Hospital Medicine.2022; 83(5): 1. CrossRef
Endotracheal Tube Obstruction Among Patients Mechanically Ventilated for ARDS Due to COVID-19: A Case Series
Samuel Wiles, Eduardo Mireles-Cabodevila, Scott Neuhofs, Sanjay Mukhopadhyay, Jordan P. Reynolds, Umur Hatipoğlu
Journal of Intensive Care Medicine.2021; 36(5): 604. CrossRef
Complete Endotracheal Tube Transection by Patient Bite: A Case Report and Algorithm for Fragment Identification and Extraction
Annette Ilg, Matthias Eikermann, Andrew J. Synn
A&A Practice.2021; 15(3): e01428. CrossRef
Importance of Capnography Monitoring in Critical Ill Patients
Young-Kown Ko
The Korean Journal of Critical Care Medicine.2017; 32(1): 79. CrossRef

Original Article

Pulmonary/Anesthesiology
A Pilot Survey of Difficult Intubation and Cannot Intubate, Cannot Ventilate Situations in Korea: Jung Soo Kim, Hyun Kyoung Lim, Jeong Yun Song, Hyun Keun Lim, Kyungchul Song, Jae Hwa Cho; Korean J Crit Care Med. 2016;31(3):202-207. Published online August 30, 2016; DOI: https://doi.org/10.4266/kjccm.2016.00297

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Abstract PDF

Background
There have been no studies of airway management strategies for difficult intubation and cannot intubate, cannot ventilate (CICV) situations in Korea. This study was intended to survey devices or methods that Korean anesthesiologists and intensivists prefer in difficult intubation and CICV situations.
Methods
A face-to-face questionnaire that consisted of a doctor’s preference, experience and comfort level for alternative airway management devices was presented to anesthesiologists and intensivists at study meetings and conferences from October 2014 to December 2014.
Results
We received 218 completed questionnaires. In regards to difficult intubation, the order of preferred alternative airway devices was a videolaryngoscope (51.8%), an optical stylet (22.9%), an intubating laryngeal mask airway (11.5%), and a fiber-optic bronchoscope (10.6%). One hundred forty-two (65.1%) respondents had encountered CICV situations, and most of the cases were identified during elective surgery. In CICV situations, the order of preferred methods of infraglottic airway management was cricothyroidotomy (CT) by intravenous (IV) catheter (57.3%), tracheostomy by a surgeon (18.8%), wire-guided CT (18.8%), CT using a bougie (2.8%), and open surgery CT using a scalpel (2.3%). Ninety-eight (45%) of the 218 respondents were familiar with the American Society of Anesthesiologists’ difficult airway algorithm or Difficult Airway Society algorithm, and only 43 (19.7%) had participated in airway workshops within the past five years.
Conclusion
The videolaryngoscope was the most preferred device for difficult airways. In CICV situations, the method of CT via an IV catheter was the most frequently used, followed by wire-guided CT method and tracheostomy by the attending surgeon.

Citations

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Current practice pattern among anaesthesiologists for difficult airway management: A nationwide cross-sectional survey
Balasaheb T Govardhane, Apurva D Shinde, Raghubirsingh P. Gehdoo, Sanya Arora
Indian Journal of Anaesthesia.2023; 67(9): 809. CrossRef
Difficult Airway and Cannot Intubate, Cannot Ventilate Situations in Korea: What Can We Do in the Future?
Tak Kyu Oh
The Korean Journal of Critical Care Medicine.2017; 32(2): 225. CrossRef

Case Report

Pulmonary/Thoracic Surgery
Successful Management of Airway Emergency in a Patient with Esophageal Cancer: Samina Park, Hyun Joo Lee, Chang Hyun Kang, Young Tae Kim; Korean J Crit Care Med. 2015;30(2):135-138. Published online May 31, 2015; DOI: https://doi.org/10.4266/kjccm.2015.30.2.135

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Abstract PDF

A 60-year-old man with advanced esophageal cancer was admitted for surgical placement of a feeding jejunostomy tube before commencement of chemoradiotherapy. His esophageal cancer had directly invaded the posterior tracheal wall, inducing a nearly total obstruction of the distal trachea. On the day before the surgery, respiratory failure developed due to tumor progression and tracheal edema. Tracheal intubation and mechanical ventilation were attempted without success. Application of veno-venous extracorporeal membrane oxygenation (ECMO) corrected the patient’s respiratory acidosis and relieved his dyspnea. With full ECMO support, he underwent tracheal stent insertion. Two hours later, he was weaned from ECMO support uneventfully. This was a successful case of tracheal stenting for airway obstruction under rescue veno-venous ECMO.

Citations

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An esophageal tumor producing life-threatening tracheal compression in a young adult was resuscitated with a self-inflating resuscitation bag
Rajnish Kumar, Nishant Sahay, Neeraj Kumar, Soumya Singh
Perioperative Care and Operating Room Management.2024; 34: 100365. CrossRef
Thoracic oesophageal cancer as a cause of stridor: a literature review
Robert Munashe Maweni, Venughanan Manikavasagar, Nicholas Sunderland, Sajid Chaudhry
BMJ Case Reports.2018; : bcr-2018-224872. CrossRef

Original Article

Thoracic Surgery
A Closed-Suction Catheter with a Pressure Valve Can Reduce Tracheal Mucosal Injury in Intubated Patients: Jin Heon Jeong, Sung Jin Nam, Young Jae Cho, Yeon Joo Lee, Se Joong Kim, In Ae Song, Sang Heon Park, Young Tae Jeon; Korean J Crit Care Med. 2014;29(1):7-12. Published online February 28, 2014; DOI: https://doi.org/10.4266/kjccm.2014.29.1.7

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Abstract PDF

Background
Endotracheal suctioning is associated with complications that include bleeding, infection, hypoxemia, cardiovascular instability, and tracheal mucosal injury. Recently, a closed-suction catheter with a pressure valve (Acetrachcare, AceMedical Co., Republic of Korea) was developed. We hypothesized that this new catheter might reduce tracheal mucosal injury compared to a conventional closed-suction catheter (Trachcare, Kimberly-balla RD, USA).
Methods
This prospective, randomized study enrolled medical and surgical patients who required mechanical ventilation for more than 48 hours. Patients were randomized into two groups: one group was suctioned with the conventional closed-suction catheter (CCC) and the other group was suctioned with the closed-suction catheter with pressure valve (CCPV). Bronchoscopy was performed 48 hours later, and the severity of tracheal mucosal injury was graded on a 5-point scale, as follows: 0 = normal; 1 = erythema or edema; 2 = erosion; 3 = hemorrhage; and 4 = ulceration or necrosis.
Results
A total of 76 patients (37 with CCPV and 39 with CCC) were included. There were no significant differences between the groups regarding demographic characteristics, changes in hemodynamic parameters during suction, incidence of pneumonia, length of intensive care unit (ICU) stay, or ICU mortality. On bronchoscopic evaluation, the use of the CCPV led to a significant decrease in tracheal mucosal injury (median tracheal mucosal injury grade 1 [IQR 0-1] vs. 2 [IQR 1-3], p = 0.001).
Conclusions
We conclude that the novel closed-suction catheter with pressure valve may reduce tracheal mucosal injury compared to conventional catheters.

Citations

Citations to this article as recorded by

“Study on Device System to Reduce Tracheal Mucosal Injury in Intubation Patients” [ASME Journal of Medical Devices, 2022, 16(3), p. 031006; DOI: 10.1115/1.4054334]

Journal of Medical Devices.2022;[Epub] CrossRef
Efficacy of the Closed Suction Applied To Patients In Intensive Care Units with Different Techniques: A Nonrandomized Controlled Trial
Zuhal GÜLSOY, Şerife KARAGÖZOĞLU
Cumhuriyet Medical Journal.2020;[Epub] CrossRef

Case Report

Pulmonary
Total Unilateral Obstruction by Sputum Immediately after Tracheal Bougienage: Kyunam Kim, Jonghun Jun, Miae Jeong, Songlark Choi, Youngsun Lee; Korean J Crit Care Med. 2014;29(1):32-37. Published online February 28, 2014; DOI: https://doi.org/10.4266/kjccm.2014.29.1.32

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Abstract PDF: A 25-year-old man developed tracheal stenosis due to prolonged intubation for five days. Immediately after bougienage, his left lung was not possible to ventilate and emergency tracheostomy was performed to produce ample space for airflow. Fiberoptic bronchoscopy showed that his left main bronchus was totally obstructed by sputum at the entrance of the superior and inferior lobar bronchi. Inadequate airway clearance increases the risk of infection and airway obstruction. We suggest chest physiotherapy be applied to all patients in the intensive care unit (ICU), especially patients with tracheal stenosis, due to its positive impact on pulmonary functional ability and ICU stay.

Original Articles

Pulmonary
The Effect of Positive End-Expiratory Pressure on Air Leakage: Comparison of Cuff Designs: Junyong In, Gyung Serk Shim, Seunghyun Chung; Korean J Crit Care Med. 2014;29(1):3-6. Published online February 28, 2014; DOI: https://doi.org/10.4266/kjccm.2014.29.1.3

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Abstract PDF

Background
Recently developed taper-shaped cuffs (TG cuffs) of endotracheal tubes (ETTs) are known to have a more potent sealing effect than cylindrical high-volume low-pressure cuffs (HL cuffs) of conventional ETTs. The aim of this study was to compare TG cuffs with HL cuffs of ETTs in a bench-top model with regard to air leakage under various positive end-expiratory pressures (PEEP).
Methods
HL cuffs and TG cuffs made from PVC were included (HL group vs. TG group). A model trachea with an internal diameter (ID) of 22 mm was attached to a test lung. The test lung was ventilated using an anesthesia respirator with volume controlled mode and PEEPs of 0, 5, 10, or 15 cm H₂O. Using spirometry, percentages of expired to inspired tidal volumes (TVe/i) were calculated as a measure of air leakage.
Results
With regard to PEEPs, the HL group showed significantly higher air leakage compared to the TG group (p < 0.0001), and a higher PEEP resulted in greater air leakage (p < 0.0001). Air leakage with higher PEEP was greater in the HL group than in the TG group at ID 7.0 mm and 7.5 mm (p = 0.0467, p = 0.0045)
Conclusions
This study shows the superior sealing ability of the TG cuff during ventilation at various PEEPs.

Citations

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Impact of Low‐Volume, Low‐Pressure Tracheostomy Cuffs on Acute Mucosal Injury in Swine
Alexandra J. Berges, Ioan A. Lina, Rafael Ospino, Hsiu‐Wen Tsai, Dacheng Ding, Jessica M. Izzi, Alexander T. Hillel
Otolaryngology–Head and Neck Surgery.2022; 167(4): 716. CrossRef
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Comparison of Hemodynamic Changes by the Thoracic Electrical Bioimpedance Device during Endotracheal Intubation or Insertion of Laryngeal Mask Airway in General Anesthesia: Han Mok You, Jin Mo Kim, Jae Kyu Cheun; Korean J Crit Care Med. 1998;13(1):67-72.

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Abstract PDF: Introduction: we measured the hemodynamic changes by the thoracic electrical bioimpedance (TEB) device during induction of anesthesia, endotracheal intubation or insertion of layngeal mask airway (LMA). This TEB device is safe, reliable and estimate continuously and invasively hemodynamic variables.
METHODS
We measured the cardiovascular response of endotracheal intubation or that of LMA insertion in thirty ASA class I patients. General anesthesia was induced with injection of fentany 1 microgram/kg, thiopetal sodium 5 mg/kg and vecuronium 1 mg/kg intravenously. Controlled ventilation was for 3 minutes with inhalation of 50% nitrous oxide and 1.5 vol% of enflurane before tracheal intubation or LMA insertion in all patients. The patient was randomly assinged to either tracheal intubation group (ET group) or laryngeal mask airway group (LMA group). Heart rate (HR), mean arterial pressure (MAP), systemic vascular resistance (SVR), stroke index (SI) and cardic index (CI) were measured to pre-induction, pre-intubation, 1 minute after intubation, 2 minute, 3 minute, 5 minute, 7 minute.
RESULTS
MAP and SVR were decreased effectively LMA group than ET group during 1 minute after intubation, 2 minute, 3 minute, 5 minute, 7 minute (p<0.05). HR was decreased effectively LMA group than ET group between pre-induction and 1 minute after intubation, between 1 minute after intubation and 2 minute after intubation (p<0.05). But, SI and CI were no difference between ET group and LMA group during induction of anesthesia and intubation (p<0.05).
CONCLUSION
The insertion of LMA is beneficial for certain patients than endotracheal tube to avoid harmful cardiovascular response in the management of airway during anesthesia.

Case Report

Ultrasound Guided Bronchoscopic Balloon Dilatation in the Management of Tracheal Stenosis: A Case Report: Jung Min Hong, Tae Kyun Kim, Ah Reum Cho, Do Won Lee, Yun Hee Han, Jae Young Kwon; Korean J Crit Care Med. 2012;27(2):139-142.; DOI: https://doi.org/10.4266/kjccm.2012.27.2.139

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Abstract PDF: We performed a balloon dilatation without a fluoroscopy monitoring by ultrasound. A 44 year old female patient was presented with subglottic stenosis, due to prolonged intubation. Although she had undergone tracheal resection and end-to-end anastomosis, the tracheal stenosis had recurred. She was scheduled for balloon dilatation. However, fluoroscopic guidance was not available, and thus, we used ultrasonographic monitoring as an alternative method. We performed a transverse scan, just cranial to the suprasternal notch, and we obtained a real time image of the trachea dilated by the balloon. We suggest that ultrasonographic monitoring is a useful adjunct to balloon dilatation in patients with tracheal stenosis.

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