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Luo YG, Wu XD, Song YX, Wang XL, Liu K, Shi CT, Wang ZL, Ma YL, Li H, Liu YH, Mi WD, Lou JS, Cao JB. Development and validation of a nomogram to predict postoperative delirium in older patients after major abdominal surgery: a retrospective case-control study. Perioper Med (Lond) 2024; 13:41. [PMID: 38755693 PMCID: PMC11100071 DOI: 10.1186/s13741-024-00399-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Accepted: 05/09/2024] [Indexed: 05/18/2024] Open
Abstract
BACKGROUND Postoperative delirium is a common complication in older patients, with poor long-term outcomes. This study aimed to investigate risk factors and develop a predictive model for postoperative delirium in older patients after major abdominal surgery. METHODS This study retrospectively recruited 7577 patients aged ≥ 65 years who underwent major abdominal surgery between January 2014 and December 2018 in a single hospital in Beijing, China. Patients were divided into a training cohort (n = 5303) and a validation cohort (n = 2224) for univariate and multivariate logistic regression analyses and to build a nomogram. Data were collected for 43 perioperative variables, including demographics, medical history, preoperative laboratory results, imaging, and anesthesia information. RESULTS Age, chronic obstructive pulmonary disease, white blood cell count, glucose, total protein, creatinine, emergency surgery, and anesthesia time were associated with postoperative delirium in multivariate analysis. We developed a nomogram based on the above 8 variables. The nomogram achieved areas under the curve of 0.731 and 0.735 for the training and validation cohorts, respectively. The discriminatory ability of the nomogram was further assessed by dividing the cases into three risk groups (low-risk, nomogram score < 175; medium-risk, nomogram score 175~199; high-risk, nomogram score > 199; P < 0.001). Decision curve analysis revealed that the nomogram provided a good net clinical benefit. CONCLUSIONS We developed a nomogram that could predict postoperative delirium with high accuracy and stability in older patients after major abdominal surgery.
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Affiliation(s)
- Yun-Gen Luo
- Department of Anesthesiology, the First Medical Center, Chinese PLA General Hospital, 28 Fuxing Road, Beijing, 100853, China
- Medical School of Chinese PLA, 28 Fuxing Road, Beijing, 100853, China
- Beidaihe Rest and Recuperation Center of People's Liberation Army, Hebei, 066100, China
| | - Xiao-Dong Wu
- Department of Anesthesiology, the First Medical Center, Chinese PLA General Hospital, 28 Fuxing Road, Beijing, 100853, China
| | - Yu-Xiang Song
- Department of Anesthesiology, the First Medical Center, Chinese PLA General Hospital, 28 Fuxing Road, Beijing, 100853, China
| | - Xiao-Lin Wang
- Department of Anesthesiology, the First Medical Center, Chinese PLA General Hospital, 28 Fuxing Road, Beijing, 100853, China
| | - Kai Liu
- Department of Anesthesiology, the First Medical Center, Chinese PLA General Hospital, 28 Fuxing Road, Beijing, 100853, China
| | - Chun-Ting Shi
- Department of Anesthesiology, the First Medical Center, Chinese PLA General Hospital, 28 Fuxing Road, Beijing, 100853, China
| | - Zi-Lin Wang
- Department of Anesthesiology, the First Medical Center, Chinese PLA General Hospital, 28 Fuxing Road, Beijing, 100853, China
| | - Yu-Long Ma
- Department of Anesthesiology, the First Medical Center, Chinese PLA General Hospital, 28 Fuxing Road, Beijing, 100853, China
| | - Hao Li
- Department of Anesthesiology, the First Medical Center, Chinese PLA General Hospital, 28 Fuxing Road, Beijing, 100853, China
| | - Yan-Hong Liu
- Department of Anesthesiology, the First Medical Center, Chinese PLA General Hospital, 28 Fuxing Road, Beijing, 100853, China
| | - Wei-Dong Mi
- Department of Anesthesiology, the First Medical Center, Chinese PLA General Hospital, 28 Fuxing Road, Beijing, 100853, China
- National Clinical Research Center for Geriatric Diseases, Chinese PLA General Hospital, 28 Fuxing Road, Beijing, 100853, China
| | - Jing-Sheng Lou
- Department of Anesthesiology, the First Medical Center, Chinese PLA General Hospital, 28 Fuxing Road, Beijing, 100853, China.
| | - Jiang-Bei Cao
- Department of Anesthesiology, the First Medical Center, Chinese PLA General Hospital, 28 Fuxing Road, Beijing, 100853, China.
- National Clinical Research Center for Geriatric Diseases, Chinese PLA General Hospital, 28 Fuxing Road, Beijing, 100853, China.
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Rapid Handheld Continuous Electroencephalogram (EEG) Has the Potential to Detect Delirium in Older Adults. Dimens Crit Care Nurs 2022; 41:29-35. [PMID: 34817959 PMCID: PMC8622342 DOI: 10.1097/dcc.0000000000000502] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
BACKGROUND Delirium-related biochemical derangements lead to electrical changes that can be detected in electroencephalographic (EEG) patterns followed by behavioral signs and symptoms. Studies using limited lead EEG show a large difference between patients with and without delirium while discriminating delirium from other causes. Handheld rapid EEG devices may be capable of detecting delirium before symptom onset, thus providing an objective physiological method to detect delirium when it is most amenable to interventions. OBJECTIVE The aim of this study was to explore the potential for rapid EEG to detect waveform pattern changes consistent with delirium status. METHODS This prospective exploratory pilot study used a correlational design and mixed models to explore the relationships between handheld portable EEG data and delirium status. RESULTS While being under powered minimized opportunities to detect statistical differences in EEG-derived ratios using spectral density analysis, sleep-to-wake ratios tended to be higher in patients with delirium. CONCLUSIONS Limited lead EEG may be useful in predicting adverse outcomes and risk for delirium in older critically ill patients. Although this population is at the highest risk for mortality, delirium is not easily identified by current clinical assessments. Therefore, further investigation of limited lead EEG for delirium detection is warranted.
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