Acute and Critical Care

Original Articles

Neurosurgery
Comparison of intracranial pressure prediction in hydrocephalus patients among linear, non-linear, and machine learning regression models in Thailand: Avika Trakulpanitkit, Thara Tunthanathip; Acute Crit Care. 2023;38(3):362-370. Published online August 18, 2023; DOI: https://doi.org/10.4266/acc.2023.00094

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Abstract PDF: Background
Hydrocephalus (HCP) is one of the most significant concerns in neurosurgical patients because it can cause increased intracranial pressure (ICP), resulting in mortality and morbidity. To date, machine learning (ML) has been helpful in predicting continuous outcomes. The primary objective of the present study was to identify the factors correlated with ICP, while the secondary objective was to compare the predictive performances among linear, non-linear, and ML regression models for ICP prediction.
Methods
A total of 412 patients with various types of HCP who had undergone ventriculostomy was retrospectively included in the present study, and intraoperative ICP was recorded following ventricular catheter insertion. Several clinical factors and imaging parameters were analyzed for the relationship with ICP by linear correlation. The predictive performance of ICP was compared among linear, non-linear, and ML regression models.
Results
Optic nerve sheath diameter (ONSD) had a moderately positive correlation with ICP (r=0.530, P<0.001), while several ventricular indexes were not statistically significant in correlation with ICP. For prediction of ICP, random forest (RF) and extreme gradient boosting (XGBoost) algorithms had low mean absolute error and root mean square error values and high R2 values compared to linear and non-linear regression when the predictive model included ONSD and ventricular indexes.
Conclusions
The XGBoost and RF algorithms are advantageous for predicting preoperative ICP and establishing prognoses for HCP patients. Furthermore, ML-based prediction could be used as a non-invasive method.

Pulmonary
An algorithm to predict the need for invasive mechanical ventilation in hospitalized COVID-19 patients: the experience in Sao Paulo: Eduardo Atsushi Osawa, Alexandre Toledo Maciel; Acute Crit Care. 2022;37(4):580-591. Published online September 8, 2022; DOI: https://doi.org/10.4266/acc.2022.00283

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Abstract PDF: Background
We aimed to characterize patients hospitalized for coronavirus disease 2019 (COVID-19) and identify predictors of invasive mechanical ventilation (IMV). Methods: We performed a retrospective cohort study in patients with COVID-19 admitted to a private network in Sao Paulo, Brazil from March to October 2020. Patients were compared in three subgroups: non-intensive care unit (ICU) admission (group A), ICU admission without receiving IMV (group B) and IMV requirement (group C). We developed logistic regression algorithm to identify predictors of IMV. Results: We analyzed 1,650 patients, the median age was 53 years (42–65) and 986 patients (59.8%) were male. The median duration from symptom onset to hospital admission was 7 days (5–9) and the main comorbidities were hypertension (42.4%), diabetes (24.2%) and obesity (15.8%). We found differences among subgroups in laboratory values obtained at hospital admission. The predictors of IMV (odds ratio and 95% confidence interval [CI]) were male (1.81 [1.11– 2.94], P=0.018), age (1.03 [1.02–1.05], P<0.001), obesity (2.56 [1.57–4.15], P<0.001), duration from symptom onset to admission (0.91 [0.85–0.98], P=0.011), arterial oxygen saturation (0.95 [0.92– 0.99], P=0.012), C-reactive protein (1.005 [1.002–1.008], P<0.001), neutrophil-to-lymphocyte ratio (1.046 [1.005–1.089], P=0.029) and lactate dehydrogenase (1.005 [1.003–1.007], P<0.001). The area under the curve values were 0.860 (95% CI, 0.829–0.892) in the development cohort and 0.801 (95% CI, 0.733–0.870) in the validation cohort. Conclusions: Patients had distinct clinical and laboratory parameters early in hospital admission. Our prediction model may enable focused care in patients at high risk of IMV.

Infection
Serum lactate levels in cirrhosis and non-cirrhosis patients with septic shock: Surat Tongyoo, Kamonlawat Sutthipool, Tanuwong Viarasilpa, Chairat Permpikul; Acute Crit Care. 2022;37(1):108-117. Published online November 26, 2021; DOI: https://doi.org/10.4266/acc.2021.00332

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Abstract PDF Supplementary Material

Background
In septic shock patients with cirrhosis, impaired liver function might decrease lactate elimination and produce a higher lactate level. This study investigated differences in initial lactate, lactate clearance, and lactate utility between cirrhotic and non-cirrhotic septic shock patients.
Methods
This is a retrospective cohort study conducted at a referral, university-affiliated medical center. We enrolled adults admitted during 2012–2018 who satisfied the septic shock diagnostic criteria of the Surviving Sepsis Campaign: 2012. Patients previously diagnosed with cirrhosis by an imaging modality were classified into the cirrhosis group. The initial lactate levels and levels 6 hours after resuscitation were measured and used to calculate lactate clearance. We compared initial lactate, lactate at 6 hours, and lactate clearance between the cirrhosis and non-cirrhosis groups. The primary outcome was in-hospital mortality.
Results
Overall 777 patients were enrolled, of whom 91 had previously been diagnosed with cirrhosis. Initial lactate and lactate at 6 hours were both significantly higher in cirrhosis patients, but there was no difference between the groups in lactate clearance. A receiver operating characteristic curve analysis for predictors of in-hospital mortality revealed cut-off values for initial lactate, lactate at 6 hours, and lactate clearance of >4 mmol/L, >2 mmol/L, and <10%, respectively, among non-cirrhosis patients. Among patients with cirrhosis, the cut-off values predicting in-hospital mortality were >5 mmol/L, >5 mmol/L, and <20%, respectively. Neither lactate level nor lactate clearance was an independent risk factor for in-hospital mortality among cirrhotic and non-cirrhotic septic shock patients.
Conclusions
The initial lactate level and lactate at 6 hours were significantly higher in cirrhosis patients than in non-cirrhosis patients.

Citations

Citations to this article as recorded by

Serum lactate and mean arterial pressure thresholds in patients with cirrhosis and septic shock
Thomas N. Smith, Chansong Choi, Puru Rattan, Laura Piccolo Serafim, Blake A. Kassmeyer, Ryan J. Lennon, Ognjen Gajic, Jody C. Olson, Patrick S. Kamath, Alice Gallo De Moraes, Douglas A. Simonetto
Hepatology Communications.2024;[Epub] CrossRef
Norepinephrine dose, lactate or heart rate: what impacts prognosis in sepsis and septic shock? Results from a prospective, monocentric registry
Tobias Schupp, Kathrin Weidner, Jonas Rusnak, Schanas Jawhar, Jan Forner, Floriana Dulatahu, Lea Marie Brück, Ursula Hoffmann, Thomas Bertsch, Ibrahim Akin, Michael Behnes
Current Medical Research and Opinion.2023; 39(5): 647. CrossRef
Intensive care management of acute-on-chronic liver failure
Giovanni Perricone, Thierry Artzner, Eleonora De Martin, Rajiv Jalan, Julia Wendon, Marco Carbone
Intensive Care Medicine.2023; 49(8): 903. CrossRef

Review

Basic science and research
The Role of Oliguria and the Absence of Fluid Administration and Balance Information in Illness Severity Scores: Neil J. Glassford, Rinaldo Bellomo; Korean J Crit Care Med. 2017;32(2):106-123. Published online May 31, 2017; DOI: https://doi.org/10.4266/kjccm.2017.00192

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Abstract PDF

Urinary examination has formed part of patient assessment since the earliest days of medicine. Current definitions of oliguria are essentially arbitrary, but duration and intensity of oliguria have been associated with an increased risk of mortality, and this risk is not completely attributable to the development of concomitant acute kidney injury (AKI) as defined by changes in serum creatinine concentration. The increased risk of death associated with the development of AKI itself may be modified by directly or indirectly by progressive fluid accumulation, due to reduced elimination and increased fluid administration. None of the currently extant major illness severity scoring systems or outcome prediction models use modern definitions of AKI or oliguria, or any values representative of fluid volumes variables. Even if a direct relationship with mortality is not observed, then it is possible that fluid balance or fluid volume variables mediate the relationship between illness severity and mortality in the renal and respiratory physiological domains. Fluid administration and fluid balance may then be an important, easily modifiable therapeutic target for future investigation. These relationships require exploration in large datasets before being prospectively validated in groups of critically ill patients from differing jurisdictions to improve prognostication and mortality prediction.

Citations

Citations to this article as recorded by

Management of oliguria
Marlies Ostermann, Andrew D. Shaw, Michael Joannidis
Intensive Care Medicine.2023; 49(1): 103. CrossRef
Nomenclature and diagnostic criteria for acute kidney injury – 2020 consensus of the Taiwan AKI-task force
Shao-Yu Yang, Terry Ting-Yu Chiou, Chih-Chung Shiao, Hugo You-Hsien Lin, Ming-Jen Chan, Che-Hsiung Wu, Chiao-Yin Sun, Wei-Jie Wang, Yen-Ta Huang, Vin-Cent Wu, Yung-Chang Chen, Ji-Tsung Fang, Shang-Jyh Hwang, Heng-Chih Pan
Journal of the Formosan Medical Association.2022; 121(4): 749. CrossRef
Haemodynamic frailty – A risk factor for acute kidney injury in the elderly
Neil G. Docherty, Christian Delles, Patrick D’Haese, Anita T. Layton, Carlos Martínez-Salgado, Benjamin A. Vervaet, Francisco J. López-Hernández
Ageing Research Reviews.2021; 70: 101408. CrossRef
Does Fluid Type and Amount Affect Kidney Function in Critical Illness?
Neil J. Glassford, Rinaldo Bellomo
Critical Care Clinics.2018; 34(2): 279. CrossRef

Original Article

Comparing the Usefulness of the Initial Acute Physiologic and Chronic Health Evaluation (APACHE) II Score in the Emergency Department (ED) and the Mortality in Emergency Department Sepsis (MEDS) Score for Predicting the Prognosis of Septic Patients Admitt: Chan Young Koh, Young Sik Kim, Tae Yong Shin, Young Rock Ha; Korean J Crit Care Med. 2008;23(2):90-95.; DOI: https://doi.org/10.4266/kjccm.2008.23.2.90

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Abstract PDF

BACKGROUND
To determine the prognostic value of the initial APACHE II score in the ED compared with the classic APACHE II score in the ICU and to check the usefulness of the MEDS score together for more rapid risk stratification of septic patients admitted to the ICU via the ED.
METHODS
We prospectively checked the initial APACHE II and MEDS scores of all the patients who had systemic inflammatory response syndrome in the ED and the classic APACHE II scores after admission to the ICU, as well 6 months later. We enrolled the only sepsis cases in the final diagnosis after reviewing the medical records. We evaluated the predictive abilities of the initial APACHE II and MEDS scores compared with the classic APACHE II score.
RESULTS
During 6 months, 58 patients diagnosed with sepsis were enrolled. Twenty-four (41.4%) patients died within 28 days of admission and 34 patients survived. The mortality group had a significantly higher mean classic APACHE II score (19 +/- 6.7 vs. 15 +/- 5.0, p < 0.01) and a higher mean MEDS score (16.67 +/- 2.70 vs. 8.91 +/- 3.11, p < 0.01) than the survivor group. The initial APACHE II score at the ED was not significantly different between the two groups. ROC analysis showed the discriminative power of the MEDS score in predicting mortality was much better than the APACHE II score (areas under the curves of the APACHE II score in the ED and ICU, and the MEDS scores were 0.668, 0.807, and 0.967, respectively; p < 0.01).
CONCLUSIONS
The initial APACHE II score in the ED did not predict mortality better than the classic APACHE II score. However, the MEDS score predicted the poor prognosis of septic patients more rapidly and accurately in the ED than the APACHE II model.

Citations

Citations to this article as recorded by

Thrombomodulin is a Strong Predictor of Multiorgan Dysfunction Syndrome in Patients With Sepsis
Dunja M. Mihajlovic, Dajana F. Lendak, Biljana G. Draskovic, Aleksandra S. Novakov Mikic, Gorana P. Mitic, Tatjana N. Cebovic, Snezana V. Brkic
Clinical and Applied Thrombosis/Hemostasis.2015; 21(5): 469. CrossRef
Endocan is useful biomarker of survival and severity in sepsis
Dunja M. Mihajlovic, Dajana F. Lendak, Snezana V. Brkic, Biljana G. Draskovic, Gorana P. Mitic, Aleksandra S. Novakov Mikic, Tatjana N. Cebovic
Microvascular Research.2014; 93: 92. CrossRef
A Case Study of Metastatic Cholangiocarcinoma with Sepsis who Showed Symptomatic Improvement after Treated with Handayeolso-tang, Fel Tauri, and Antibiotics
Soo-Min Lee, Seong-Heon Choi, An-Na Song, Ji-Young Lee, Jin Chae, Eu-Hong Jung, Soo-Kyung Lee
Journal of Sasang Constitutional Medicine.2013; 25(4): 432. CrossRef

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