Acute and Critical Care

Original Article

Epidemiology
Mortality rates among adult critical care patients with unusual or extreme values of vital signs and other physiological parameters: a retrospective study: Charles Harding, Marybeth Pompei, Dmitriy Burmistrov, Francesco Pompei; Acute Crit Care. 2024;39(2):304-311. Published online May 13, 2024; DOI: https://doi.org/10.4266/acc.2023.01361

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Abstract PDF: Background
We evaluated relationships of vital signs and laboratory-tested physiological parameters with in-hospital mortality, focusing on values that are unusual or extreme even in critical care settings.
Methods
We retrospectively studied Philips Healthcare–MIT eICU data (207 U.S. hospitals, 20142015), including 166,959 adult-patient critical care admissions. Analyzing most-deranged (worst) value measured in the first admission day, we investigated vital signs (body temperature, heart rate, mean arterial pressure, and respiratory rate) as well as albumin, bilirubin, blood pH via arterial blood gas (ABG), blood urea nitrogen, creatinine, FiO2 ABG, glucose, hematocrit, PaO2 ABG, PaCO2 ABG, sodium, 24-hour urine output, and white blood cell count (WBC).
Results
In-hospital mortality was ≥50% at extremes of low blood pH, low and high body temperature, low albumin, low glucose, and low heart rate. Near extremes of blood pH, temperature, glucose, heart rate, PaO2 , and WBC, relatively. Small changes in measured values correlated with several-fold mortality rate increases. However, high mortality rates and abrupt mortality increases were often hidden by the common practice of thresholding or binning physiological parameters. The best predictors of in-hospital mortality were blood pH, temperature, and FiO2 (scaled Brier scores: 0.084, 0.063, and 0.049, respectively).
Conclusions
In-hospital mortality is high and sharply increasing at extremes of blood pH, body temperature, and other parameters. Common-practice thresholding obscures these associations. In practice, vital signs are sometimes treated more casually than laboratory-tested parameters. Yet, vitals are easier to obtain and we found they are often the best mortality predictors, supporting perspectives that vitals are undervalued.

Review Article

Neurosurgery
Target temperature management in traumatic brain injury with a focus on adverse events, recognition, and prevention: Kwang Wook Jo; Acute Crit Care. 2022;37(4):483-490. Published online November 10, 2022; DOI: https://doi.org/10.4266/acc.2022.01291

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Traumatic brain injury (TBI) is a critical cause of disability and death worldwide. Many studies have been conducted aimed at achieving favorable neurologic outcomes by reducing secondary brain injury in TBI patients. However, ground-breaking outcomes are still insufficient so far. Because mild-to-moderate hypothermia (32°C–35°C) has been confirmed to help neurological recovery for recovered patients after circulatory arrest, it has been recognized as a major neuroprotective treatment plan for TBI patients. Thereafter, many clinical studies about the effect of therapeutic hypothermia (TH) on severe TBI have been conducted. However, efficacy and safety have not been demonstrated in many large-scale randomized controlled studies. Rather, some studies have demonstrated an increase in mortality rate due to complications such as pneumonia, so it is not highly recommended for severe TBI patients. Recently, some studies have shown results suggesting TH may help reperfusion/ischemic injury prevention after surgery in the case of mass lesions, such as acute subdural hematoma, and it has also been shown to be effective in intracranial pressure control. In conclusion, TH is still at the center of neuroprotective therapeutic studies regarding TBI. If proper measures can be taken to mitigate the many adverse events that may occur during the course of treatment, more positive efficacy can be confirmed. In this review, we look into adverse events that may occur during the process of the induction, maintenance, and rewarming of targeted temperature management and consider ways to prevent and address them.

Citations

Citations to this article as recorded by

Blood pressure variability and functional outcome after decompressive hemicraniectomy in malignant middle cerebral artery infarction
Jae Wook Jung, Ilmo Kang, Jin Park, Sang‐Beom Jeon
European Journal of Neurology.2025;[Epub] CrossRef
State-of-the-art for automated machine learning predicts outcomes in poor-grade aneurysmal subarachnoid hemorrhage using routinely measured laboratory & radiological parameters: coagulation parameters and liver function as key prognosticators
Ali Haider Bangash, Jayro Toledo, Muhammed Amir Essibayi, Neil Haranhalli, Rafael De la Garza Ramos, David J. Altschul, Stavropoula Tjoumakaris, Reza Yassari, Robert M. Starke, Redi Rahmani
Neurosurgical Review.2025;[Epub] CrossRef
Trends and hotspots in research of traumatic brain injury from 2000 to 2022: A bibliometric study
Yan-rui Long, Kai Zhao, Fu-chi Zhang, Yu Li, Jun-wen Wang, Hong-quan Niu, Jin Lei
Neurochemistry International.2024; 172: 105646. CrossRef
Targeted temperature control following traumatic brain injury: ESICM/NACCS best practice consensus recommendations
Andrea Lavinio, Jonathan P. Coles, Chiara Robba, Marcel Aries, Pierre Bouzat, Dara Chean, Shirin Frisvold, Laura Galarza, Raimund Helbok, Jeroen Hermanides, Mathieu van der Jagt, David K. Menon, Geert Meyfroidt, Jean-Francois Payen, Daniele Poole, Frank R
Critical Care.2024;[Epub] CrossRef
A review on targeted temperature management for cardiac arrest and traumatic brain injury
Hiroshi Ito, Sanae Hosomi, Takeshi Nishida, Youhei Nakamura, Jiro Iba, Hiroshi Ogura, Jun Oda
Frontiers in Neuroscience.2024;[Epub] CrossRef
Intracranial pressure trends and clinical outcomes after decompressive hemicraniectomy in malignant middle cerebral artery infarction
Jae Wook Jung, Ilmo Kang, Jin Park, Seungjoo Lee, Sang-Beom Jeon
Annals of Intensive Care.2024;[Epub] CrossRef
Severe traumatic brain injury in adults: a review of critical care management
Siobhan McLernon
British Journal of Neuroscience Nursing.2023; 19(6): 206. CrossRef

Original Articles

Surgery
Association of Immediate Postoperative Temperature in the Surgical Intensive Care Unit with 1-Year Mortality: Retrospective Analysis Using Digital Axillary Thermometers: Jiwook Kim, Tak Kyu Oh, Jaebong Lee, Saeyeon Kim, In-Ae Song; Acute Crit Care. 2019;34(1):53-59. Published online January 9, 2019; DOI: https://doi.org/10.4266/acc.2019.00255

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Abstract PDF Supplementary Material

Background
Postoperative body temperature is closely associated with prognosis although there is limited research regarding this association at postoperative intensive care unit (ICU) admission. Furthermore, no studies have used digital axillary thermometers to measure postoperative body temperature. This study investigated the association between mortality and postoperative temperature measured using a digital axillary thermometer within 10 minutes after ICU admission. Methods: This retrospective observational study evaluated data from adult patients admitted to an ICU after elective or emergency surgery. The primary outcome was 1-year mortality after ICU admission. Multivariable logistic regression analysis with restricted cubic splines was used to evaluate the association between temperature and outcomes. Results: We evaluated data from 5,868 patients admitted between January 1, 2013 and May 31, 2016, including 5,311 patients (90.5%) who underwent noncardiovascular surgery and 557 patients (9.5%) who underwent cardiovascular surgery. Deviation from the median temperature (36.6°C) was associated with increases in 1-year mortality (≤ 36.6°C: linear coefficient, –0.531; P<0.001 and ≥36.6°C: spline coefficient, 0.756; P<0.001). Similar statistically significant results were observed in the noncardiovascular surgery group, but not in the cardiovascular surgery group. Conclusions: An increase or decrease in body temperature (vs. 36.6°C) measured using digital axillary thermometers within 10 minutes of postoperative ICU admission was associated with increased 1-year mortality. However, no significant association was observed after cardiovascular surgery. These results suggest that postoperative temperature is associated with longterm mortality in patients admitted to the surgical ICU in the postoperative period.

Citations

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Construction of a nursing assessment framework for patients in anaesthesia recovery period: A modified Delphi study
Lang Peng, Xianxian Zang, Ruili Liu, Ping Bai, Lu Wang, Guoyong Yang
Journal of Advanced Nursing.2024; 80(9): 3653. CrossRef
A prognostic model for 1-month mortality in the postoperative intensive care unit
Mohammad Fathi, Nader Markazi Moghaddam, Saba Naderian Jahromi
Surgery Today.2022; 52(5): 795. CrossRef
Relationship Between First 24-h Mean Body Temperature and Clinical Outcomes of Post-cardiac Surgery Patients
Fei Xu, Cheng Zhang, Chao Liu, Siwei Bi, Jun Gu
Frontiers in Cardiovascular Medicine.2021;[Epub] CrossRef
Rebound hypothermia after cytoreductive surgery with hyperthermic intraperitoneal chemotherapy (CRS-HIPEC) and cardiac arrest in immediate postoperative period: a report of two cases and review of literature
Sohan Lal Solanki, Mrida A. K. Jhingan, Avanish P. Saklani
Pleura and Peritoneum.2020;[Epub] CrossRef
Postoperative Hypothermia
Deokkyu Kim
Acute and Critical Care.2019; 34(1): 79. CrossRef

CPR/Resuscitation
Comparison between Gel Pad Cooling Device and Water Blanket during Target Temperature Management in Cardiac Arrest Patients: Yoon Sun Jung, Kyung Su Kim, Gil Joon Suh, Jun-Hwi Cho; Acute Crit Care. 2018;33(4):246-251. Published online November 30, 2018; DOI: https://doi.org/10.4266/acc.2018.00192

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Abstract PDF Supplementary Material

Background
Target temperature management (TTM) improves neurological outcomes for comatose survivors of out-of-hospital cardiac arrest. We compared the efficacy and safety of a gel pad cooling device (GP) and a water blanket (WB) during TTM.
Methods
We performed a retrospective analysis in a single hospital, wherein we measured the time to target temperature (<34°C) after initiation of cooling to evaluate the effectiveness of the cooling method. The temperature farthest from 33°C was selected every hour during maintenance. Generalized estimation equation analysis was used to compare the absolute temperature differences from 33°C during the maintenance period. If the selected temperature was not between 32°C and 34°C, the hour was considered a deviation from the target. We compared the deviation rates during hypothermia maintenance to evaluate the safety of the different methods.
Results
A GP was used for 23 patients among of 53 patients, and a WB was used for the remaining. There was no difference in baseline temperature at the start of cooling between the two patient groups (GP, 35.7°C vs. WB, 35.6°C; P=0.741). The time to target temperature (134.2 minutes vs. 233.4 minutes, P=0.056) was shorter in the GP patient group. Deviation from maintenance temperature (2.0% vs. 23.7%, P<0.001) occurred significantly more frequently in the WB group. The mean absolute temperature difference from 33°C during the maintenance period was 0.19°C (95% confidence interval [CI], 0.17°C to 0.21°C) in the GP group and 0.76°C (95% CI, 0.71°C to 0.80°C) in the WB group. GP significantly decreased this difference by 0.59°C (95% CI, 0.44°C to 0.75°C; P<0.001).
Conclusions
The GP was superior to the WB for strict temperature control during TTM.

Citations

Citations to this article as recorded by

Efficacy and safety of the Arctic Sun device for hypoxic-ischemic encephalopathy in adult patients following cardiopulmonary resuscitation: A systematic review and meta-analysis
Saurabh C. Sharda, Mandip Singh Bhatia, Rohit R. Jakhotia, Ashish Behera, Atul Saroch, Ashok Kumar Pannu, Mohan Kumar H
Brain Circulation.2023; 9(3): 185. CrossRef
Factors influencing deviation from target temperature during targeted temperature management in postcardiac arrest patients
Kanae Ochiai, Yasuhiro Otomo
Open Heart.2023; 10(2): e002459. CrossRef
Water Temperature Variability Is Associated with Neurologic Outcomes in Out-of-Hospital Cardiac Arrest Survivors Who Underwent Targeted Temperature Management at 33°C
Seok Jin Ryu, Dong Hun Lee, Byung Kook Lee, Kyung Woon Jeung, Yong Hun Jung, Jung Soo Park, Jin Hong Min, Dong Ki Kim
Therapeutic Hypothermia and Temperature Management.2022; 12(2): 74. CrossRef
Comparison of hydrogel pad and water-circulating blanket cooling methods for targeted temperature management: A propensity score-matched analysis from a prospective multicentre registry
Kyoung Tak Keum, Yong Hwan Kim, Jun Ho Lee, Seong Jun Ahn, Seong Youn Hwang, Joo Suk Oh, Su Jin Kim, Soo Hyun Kim, Kyung Woon Jeung
Resuscitation.2021; 169: 78. CrossRef
Use of a Servo-Controlled Cooling Gel Pad System to Regulate Body Temperature in Critically Ill Children
Gema Pérez, Gema Manrique, Julia García, Sara de la Mata, Débora Sanz, Jesús López-Herce
Pediatric Critical Care Medicine.2020; 21(12): e1094. CrossRef
Management of post-cardiac arrest syndrome
Youngjoon Kang
Acute and Critical Care.2019; 34(3): 173. CrossRef

Effectiveness of Left Infrascapular Skin Temperature Monitoring in the ICU: Young Joo Lee, Hyun Jue Gill, Kuem Hee Chung, Jeong Yeon Hong, Bong Ki Moon, Myoung Eun Kim, Min Hyup Choi, Young Seok Lee; Korean J Crit Care Med. 1998;13(2):229-233.

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Abstract PDF: BACKGOUND: Many sites are used to measure the body temperature and each site has different physiologic and practical importance. Several types of skin temperature monitoring have been used as simple, inexpensive and viable alternatives in many settings. In the operating area, it is difficult to insert a temperature probe during operation. The object of this study was to compare the difference and the correlation between the temperature of the left infrascapular skin region and temperatures of axilla, nasopharynx and rectum, METHODS: Forty-two adult patients who were admitted at surgical ICU were studied. After covering the bed with insulator and sheets, patients were placed in supine position. Temperature monitoring was done at the same time using four temperature probes from two bedside patient monitors in the same patient. The temperatures were measured twice at 30 minutes after application of the temperature probe at 10 minute intervals and the average temperature was recorded.
RESULTS
The differences between skin temperature and rectal, nasopharyngeal, and axillary temperatures were -0.64+/-0.21degrees C (p<0.05), -0.40+/-0.21degrees C, and 0.24+/-0.21degrees C respectively. The lineal correlation between skin temperature and rectal, nasopharyngeal, and axillary temperatures were 0.839, 0.854, and 0.819, respectively (p<0.001).
CONCLUSION
This study suggests that the monitoring of the skin temperature at the left infrascapular skin region is well correlated with the nasopharyngeal, rectal and axillary temperatures. And it will be an easy, simple and safe method which can be used for the patients who are alert but need continuous temperature monitoring in the intensive care unit and as well as for the patients who are in the middle of operation.

The Effect of Brain Hypothermia on Brain Edema Formation after Transient Ischemia: Seung Sig Kang, Kyu Taek Choi, Chung Gill Leem, In Hea Cho, Sung Lyang Chung, Pyung Hwan Park; Korean J Crit Care Med. 1998;13(1):43-48.

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Abstract PDF: BACKGOUND: When ischemia reduces blood supply, hypothermia remains the sine qua non for reducing demand. An alternative to whole body deep hypothermia is an isolated cerebral hypothermia via perfusion of cooled blood through one internal carotid artery. The goal of this study was to evaluate the effect of isolated cold hemisphere perfusion during the cerebral ischemia on the formation of brain edema.
METHODS
The studies were designed to perfuse a saline solution into both carotid arteries with a different temperature (left 15degreesC, right 38degreesC) in the same animal. Cerebral ischemia was produced by a combination of the both carotid artery saline perfusion and systemic hypotension to a mean arterial blood pressure of 40 mmHg for 10 minutes. Ninety minutes after reperfusion, brain water contents were measured using the kerosene/bromobenzene density gradient and compared with warm saline perfusion and normal control group.
RESULTS
Brain water content of cold saline perfusion hemisphere measured at 90 minutes after ischemia showed decreased water content compared to warm saline perfusion hemisphere (p<0.05).
CONCLUSIONS
Cerebral cold saline perfusion during the ischemia decreased the formation of brain edema. These results showed hypothemia is one of the most effective ways to protect brain from the ischemia.

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