Light chain systemic amyloidosis is rare but may accompany laryngeal or pulmonary involvement, which may increase the risk in airway management. We present a case of a patient planned for resection of cervical epidural mass. The patient had face and neck ecchymoses and purpuras with an unknown cause. Mask ventilation and intubation were successful, but the operation was cancelled to evaluate bleeding from facial skin lesions. A diagnosis of light chain systemic amyloidosis prompted evaluation of involvement of other organs and treatment. This case shows the importance of preoperative evaluation and careful airway management in patients with systemic amyloidosis.
Light chain systemic amyloidosis is rare but may accompany laryngeal or pulmonary involvement, which may increase the risk in airway management. We present a case of a patient planned for resection of cervical epidural mass. The patient had face and neck ecchymoses and purpuras with an unknown cause. Mask ventilation and intubation were successful, but the operation was cancelled to evaluate bleeding from facial skin lesions. A diagnosis of light chain systemic amyloidosis prompted evaluation of involvement of other organs and treatment. This case shows the importance of preoperative evaluation and careful airway management in patients with systemic amyloidosis.
Abstract Although integrated home internet of things (IoT) services can be beneficial, especially for vulnerable older adults, the hurdle of usability hinders implementation of the technology. This study aimed to evaluate the practical usability of home IoT services in older adults, by frailty status, and to determine the potential obstacles. From August 2019 to July 2020, we randomly selected 20 vulnerable older adults (prefrailty group [ n = 11], and frailty group [ n = 9]) who had already been identified as needing home IoT services in a community-based prospective cohort study, the Aging Study of the Pyeongchang Rural Area. Integrated home IoT services were provided for 1 year, and a face-to-face survey evaluating usability and satisfaction of each service was conducted. The usability of the integrated home IoT services declined gradually throughout the study. However, prefrail participants showed higher usability than frail older adults (difference-in-difference = − 19.431, p = 0.012). According to the frailty status, the change in usability for each service type also showed a different pattern. During the 12-month study period, the service with the highest satisfaction converged from various service needs to light control by remote control (77.8%) in the prefrailty group and automatic gas circuit breaker (72.7%) in the frailty group. For wider implementation of home IoT services, organizing services expected to have high usability and satisfaction based on user’s frailty status is crucial. Also, providing education before service implementation might help older adults coping with digital literacy.
Delirium is an important syndrome found in patients in the intensive care unit (ICU), however, it is usually under-recognized during treatment. This study was performed to investigate whether delirious patients can be successfully distinguished from non-delirious patients by using heart rate variability (HRV) and machine learning.Electrocardiography data of 140 patients was acquired during daily ICU care, and HRV data were analyzed. Delirium, including its type, severity, and etiologies, was evaluated daily by trained psychiatrists. HRV data and various machine learning algorithms including linear support vector machine (SVM), SVM with radial basis function (RBF) kernels, linear extreme learning machine (ELM), ELM with RBF kernels, linear discriminant analysis, and quadratic discriminant analysis were utilized to distinguish delirium patients from non-delirium patients.HRV data of 4797 ECGs were included, and 39 patients had delirium at least once during their ICU stay. The maximum classification accuracy was acquired using SVM with RBF kernels. Our prediction method based on HRV with machine learning was comparable to previous delirium prediction models using massive amounts of clinical information.Our results show that autonomic alterations could be a significant feature of patients with delirium in the ICU, suggesting the potential for the automatic prediction and early detection of delirium based on HRV with machine learning.
Abstract Background: Vitrectomy under general anesthesia is considered as a candidate for ambulatory surgery. An anesthetic method with high quality of postoperative recovery should be selected for successful ambulatory surgery. We thus compared quality of postoperative recovery on the day of vitrectomy using the Quality of Recovery (QoR)-40 questionnaire between propofol total intravenous anesthesia (propofol group) and desflurane inhalation anesthesia (desflurane group) as the 2 representative anesthetic methods. Methods: Eighty-four patients (20–80 years old) undergoing elective vitrectomy under general anesthesia were randomized into 2 groups. The propofol group received propofol and remifentanil using effect-site target-controlled infusion (TCI), and the desflurane group received desflurane inhalation and remifentanil using effect-site TCI. We assessed quality of recovery at 6 hours after surgery through interviews using the QoR-40 questionnaire. We also collected data related to recovery and complications during emergence and recovery period. Results: The median of QoR-40 score on the day of surgery was significantly higher in the propofol group than that in the desflurane group (181.0 vs 169.5, respectively; P = .033). In particular, propofol group had significantly higher scores for physical comfort and physical independence dimensions. The amount of remifentanil administered was significantly higher, and the emergence time was significantly longer in propofol group. However, there were no significant differences in other complications between the 2 groups. Conclusions: Propofol total intravenous anesthesia provided significantly better quality of recovery on the day of surgery than desflurane inhalation anesthesia.
Upon inducting general anesthesia in the operating room, we have observed a prompt increase in the bispectral index (BIS) after the intravenous injection of suxamethonium. We hypothesized that the cause of this BIS increase is muscle hyperactivity owing to fasciculation. However, no reports have been published regarding this abrupt increase in the BIS upon the induction of general anesthesia by suxamethonium. To investigate the degree of change in the BIS in patients receiving anesthesia with suxamethonium, we performed a prospective observational study of 63 participants who underwent closed reduction for nasal bone fracture. Anesthesia was induced by the total intravenous administration of anesthetics and 1.5 mg kg−1 of suxamethonium was injected intravenously upon achieving BIS between 45 and 55. Intubation was performed after fasciculation. Electromyograms and BIS values were recorded from the induction of suxamethonium until 15 minutes after intubation. The mean BIS values were 95.4, 48.5, and 69.3 before induction, before the intravenous injection of suxamethonium, and immediately after fasciculation, respectively. The BIS value immediately after fasciculation (69.3 ± 10.6) was significantly higher than the cutoff BIS value of 60 (P < .001). Although fasciculation after the intravenous injection of suxamethonium resulted in the prompt increase of the BIS to values over 60, none of the participants was awake during surgery. In conclusion, the administration of suxamethonium resulted in the postfasciculation increase of the BIS to an average value of 69.3 without affecting the patient's state of consciousness.
A 30-year-old female patient, 18 weeks gestational age, with no prior medical history was admitted to hospital complaining severe right upper quadrant pain. The patient was admitted to intensive care unit (ICU) after emergency surgery to treat intraperitoneal hemorrhage caused by rupture of liver hematoma. Despite the absence of high blood pressure, the patient was diagnosed with hemolysis, elevated liver enzymes, and low platelet count (HELLP) syndrome on the basis of abnormal levels of blood aspartate aminotransferase/alanine aminotransferase, lactate dehydrogenase, total bilirubin, direct bilirubin, C-reactive protein (CRP) and platelet along with liver damage and proteinuria. While in ICU, the patient was given total parenteral nutrition (TPN) and enteral nutrition (EN) for -20 days because oral feeding was impractical. In the early stage, TPN supply was not sufficient to meet the elevated nutritional demand induced by disease and surgery. Nevertheless, continuous care of nutrition support team enabled satisfactory EN and, subsequently, oral feeding which led to improvement in patient outcome.
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