Dual-band high-Q near-perfect absorption by tilted Si-assisted metasurfaces.

All-dielectric metasurface perfect absorbers (MPAs) based on quasibound states in the continuum (QBICs) play a crucial role in optical and photonic devices as they can excite high-Q resonances. These structures require adding back reflectors or placing at least two asymmetric elements in each unit to break the absorption limit of 50%, which will increase the design complexity. In this work, we propose a high-Q monolayer MPA (MMPA) composed of a tilted Si nanocube array. By tuning the tilted angle of the nanocube, dual-QBIC modes at two different wavelengths are excited, which corresponds to magnetic quadrupole (MQ) and toroidal dipole (TD) modes, respectively. The high-reflection but low-Q magnetic dipole (MD) background mode excited by such a dual-band structure can decrease the radiative loss of transmission of MQ and TD modes, enabling the structure to break the absorption limit of 50%. The maximum absorption achieves 94% simultaneously at the wavelength of 933 and 961 nm, with the Q factors of 759 and 986, respectively. Our work provides a simple paradigm for designing dual-band high-Q MMPAs, which would greatly expand their range of applications, such as multiplexed optical nanodevices.

Achieving bi-anisotropic coupling through uniform temporal modulations without inversion symmetry disruption.

Temporal modulations provide a new approach for realizing metamaterials. In this study, through the imposition of uniform temporal modulations, we achieve two types of reciprocal bi-anisotropic metamaterials. Notably, these achievements do not rely on any spatial modulation, preserving inversion symmetry at any instantaneous time. This stands in sharp contrast to the scenario of traditional bi-anisotropic metamaterials, where the disruption of inversion symmetry by spatial arrangements is necessary. Conditions for realizing nonzero bi-anisotropic coupling are discussed and verified through full-wave simulations. Our work will stimulate research in the field of temporal bi-anisotropic metamaterials, as well as the application of temporal modulations in manipulating photonic spin angular momentum.

Kerker-type positional disorder immune metasurfaces.

Metasurfaces that can operate without a strictly periodic arrangement of meta-atoms are highly desirable for practical optical micro-nano devices. In this paper, we propose two kinds of Kerker-type metasurfaces that exhibit immunity to positional disorder. These metasurfaces consist of two distinct core-shell cylinders that satisfy the first and second Kerker conditions, respectively. Despite significant positional disorder perturbations of the meta-atoms, the metasurfaces can maintain excellent performance comparable to periodic ones, including total transmission and magnetic mirror responses. This positional disorder immunity arises from the unidirectional forward or backward scattering of a single core-shell cylinder, which results in minimal lateral scattering coupling between neighboring cylinders, thereby having little impact on multiple scattering in either the forward or backward direction. In contrast, the response of positional disorder non-Kerker-type metasurfaces decreases significantly. Our findings present a new approach for designing robust metasurfaces and expanding the applications of metasurfaces in sensing and communications within complex practical scenarios.

Broadband frequency translation by space-time interface with weak permittivity temporal change.

Breaking spatial and temporal homogeneities simultaneously incurs the combination of wavenumber and frequency translations. In this work, broadband frequency translations with both redshifts and blueshifts triggered by a single photonic space-time interface (PSTI) with weak temporal change of permittivity across which a homogeneous medium suddenly becomes a one-dimensional photonic crystal is proposed. Mode conversions induced by the PSTI are analyzed, according to which the frequency translation amplitudes are independent of the change of permittivity and the initial frequency but are given by the product of the phase speed of the homogeneous medium and the spatial modulation frequency of the photonic crystal. Hence, a static field can be partially converted into dynamic fields by imposing the PSTI. Our findings pave the way for the study of PSTIs and provide a new scheme to realize broadband frequency translations.

Chinese Neonatal Nurses' Lived Experiences of Providing End-of-Life Care in the NICU: A Descriptive Phenomenological Study.

BACKGROUND: Although end-of-life care (EOLC) has been well-studied, the experience of neonatal intensive care unit (NICU) nurses in China, where little EOLC training is provided, requires further investigation. PURPOSE: To explore the lived experience of EOLC delivery among NICU nurses, to provide evidence to enhance nurses' EOLC skills and improve their overall quality. METHODS: This qualitative study adopted a phenomenological approach. A total of 11 NICU nurses participated in semistructured in-depth interviews between June and July 2022 at the First Affiliated Hospital of University of Science and Technology of China (USTC). Colaizzi's 7-step method was used to analyze the data. RESULTS: Five main themes were identified: (a) multiple emotions are experienced during EOLC delivery; (b) EOLC delivery is stressful from various sources for nurses; (c) expressing empathy and compassion is important; (d) ethical and clinical decision-making are key components of EOLC delivery; and (e) there are challenges in improving neonatal EOLC understanding and delivery. IMPLICATIONS FOR PRACTICE AND RESEARCH: The experience of EOLC among Chinese NICU nurses is multidimensional and intensive. Institutions or units must establish and implement related protocols and guidelines to address differences between clinical practice and ideal protocols for neonatal EOLC. Educational programs that consider nurses' personal and interpersonal factors, including local culture, must be developed. Neonatal nurses in Western countries encountering Chinese-born parents who have lost their infants can gain an understanding of parents' perceptions from this study. Future research should focus on developing and testing interventions to train and support NICU nurses working with end-of-life neonates.

A predictive model of macrosomic birth based upon real-world clinical data from pregnant women.

BACKGROUND: Fetal macrosomia is associated with an increased risk of several maternal and newborn complications. Antenatal predication of fetal macrosomia remains challenging. We aimed to develop a nomogram model for the prediction of macrosomia using real-world clinical data to improve the sensitivity and specificity of macrosomia prediction. METHODS: In the present study, we performed a retrospective, observational study based on 13,403 medical records of pregnant women who delivered singleton infants at a tertiary hospital in Shanghai from 1 January 2018 through 31 December 2019. We split the original dataset into a training set (n = 9382) and a validation set (n = 4021) at a 7:3 ratio to generate and validate our model. The candidate variables, including maternal characteristics, laboratory tests, and sonographic parameters were compared between the two groups. A univariate and multivariate logistic regression was carried out to explore the independent risk factors for macrosomia in pregnant women. Thus, the regression model was adopted to establish a nomogram to predict the risk of macrosomia. Nomogram performance was determined by discrimination and calibration metrics. All the statistical analysis was analyzed using R software. RESULTS: We compared the differences between the macrosomic and non-macrosomic groups within the training set and found 16 independent risk factors for macrosomia (P < 0.05), including biparietal diameter (BPD), head circumference (HC), femur length (FL), amniotic fluid index (AFI) at the last prenatal examination, pre-pregnancy body mass index (BMI), and triglycerides (TG). Values for the areas under the curve (AUC) for the nomogram model were 0.917 (95% CI, 0.908-0.927) and 0.910 (95% CI, 0.894-0.927) in the training set and validation set, respectively. The internal and external validation of the nomogram demonstrated favorable calibration as well as discriminatory capability of the model. CONCLUSIONS: Our model has precise discrimination and calibration capabilities, which can help clinical healthcare staff accurately predict macrosomia in pregnant women.

Sevoflurane ameliorates LPS-induced inflammatory injury of HK-2 cells through Sirtuin1/NF-κB pathway.

The anesthetic sevoflurane (SEV) has been shown to protect against organ's injury during sepsis. The present study intended to uncover the protective effects of SEV on sepsis-induced acute kidney injury (SI-AKI) and its possible mechanism. Human renal tubular epithelial cell HK-2 was treated with 10 µg/mL lipopolysaccharide (LPS) to construct SI-AKI cell model. LPS-induced HK-2 cells were pretreated with SEV in the absence or presence of EX527, an inhibitor of Sirtuin 1 (SIRT1), after which were the detection of cell viability, lactate dehydrogenase (LDH) release, apoptosis, inflammation, and oxidative stress. Our results demonstrated that LPS caused decreased cell viability, increased LDH release, improved cell apoptosis along with decreased expression of Bcl2 and enhanced expressions of Bax, cleaved PARP and cleaved caspase, enhanced production, and protein expressions of TNF-α, IL-6, and IL-1ß, increased generation of reactive oxygen species (ROS) and malondialdehyde (MDA), but contributed to declined activity of superoxide dismutase (SOD) and glutathione peroxidase (GSH-Px). LPS inhibited SIRT1 and IκBα expressions but up-regulated p-NF-κB p65 and acetyl-p53 expressions as well. However, SEV pretreatment abolished all above-mentioned effects of LPS on HK-2 cells, while EX527 significantly reversed the effects of SEV. In conclusion, SEV effectively protected HK-2 cells against LPS-induced apoptosis, inflammation, and oxidative stress, and these effects may depend on the increase of SIRT1 expression, thereby inactivating NF-κB signaling.

Extension of refocus depth range in digital holographic microscopy.

Digital holographic microscopy (DHM) suffers from a limited refocus depth range due to the employed microscope objective. The relationship between the refocus depth range of the DHM system and its optical parameters is studied theoretically and experimentally, and a method is proposed that combines wavefront coding with bicubic interpolation and extrapolation iteration to extend the refocus depth range. For obtaining a uniform point spread function on the refocus plane, a propagator kernel in numerical reconstruction is multiplied by a numerical logarithmic phase mask, and a deviation of the refocus distance is made. To improve the resolution of the refocused image, the size of the hologram is doubly enlarged. This approach can extend the refocus depth range from 0.9 up to 1.5 mm. This work provides important guidance for high-resolution imaging with a large refocus depth range in DHM.

[Research progress on chemical constituents, pharmacological action and quality control of Scutellaria barbata].

Scutellaria barbata is a recognized anti-cancer traditional Chinese medicine, with the effects of clearing heat and detoxi-fication, dispelling blood stasis and stopping bleeding, diuresis and detumescence. At present, terpenoids, flavonoids, polysaccharides and volatile oils have been isolated from S. barbata, which have many pharmacological effects, such as resisting tumor, virus, bacteria and oxidation, and immunomodulation. This paper reviews the studies on the chemical constituents, pharmacological action and quality control of S. barbata, in the expectation of providing ideas and references for the further development and studies of S. barbata.

[Variety and standard arrangement of Yao medicine in Euphorbiaceae].

The names, basic sources, medicinal parts, efficacy and standards of the medicinal materials in Euphorbiaceae were systematically collated and analyzed by the textual research for Yao medicine monographs in this paper. The results showed that there were great differences in the names, basic sources, medicinal parts and efficacy of some medicinal materials recorded in different literatures. There were 19 genera and 60 species(including varieties) of Euphorbiaceae of Yao medicine, involving 50 kinds of medicinal materials. Among them, there were 42 kinds of single basic sources medicine, 8 kinds of multi basic sources medicine, 28 kinds of root medicine, 26 kinds of whole plant medicine, 25 kinds of unique Yao medicine, accounting for 50%, 11 kinds of cross with Chinese medicinal materials, accounting for 22%. There were 21 kinds of Yao medicine standards at all levels, but only 1 kind of Laoban medicine and 2 kinds of Yao medicine standards. The Yao medicine in Euphorbiaceae could be named by means of transliteration of Yao language/Yao language transliteration/Chinese medicine name, Laoban medicine, plant morphology, medicinal properties, color and smell of medicine, while the medicinal parts and efficacy of the same medicinal name were different from those of traditional Chinese medicine. Therefore, the name and basic sources of the medicinal materials in Euphorbiaceae were not standardized, and the quality standard is not perfect. The above results provided a reference for the construction and improvement of quality standard system, the promotion of the production of medicinal materials and clinical medication standards, and the further development and utilization of Euphorbiaceae.

[Study on lipid-lowering mechanism of active peptide DP17 from Eupolyphaga steleophaga in hyperlipidemia rats].

The aim of this paper was to investigate the mechanism of the active peptide DP17 of Eupolyphaga steleophaga in the treatment of hyperlipidemia rats. HPLC and MADIL-TOF/TOF-MS were used for the amino acid sequence analysis and solid-phase synthesis on the active peptide of E. steleophaga which were obtained by biomimetic enzymatic hydrolysis, separation and purification. The hyperlipidemia model was established by feeding with high-fat diet.Twenty days later, the rats in the blank group and the model group were given the saline and the rats in remaining groups were given the corresponding drugs by oral administration. After administration for 4 weeks, the levels of triglyceride(TG), total cholesterol(TC) and low density lipoprotein(LDL) in serum, the levels of TG, TC, adenosine monophosphate(AMP), adenosine triphosphate(ATP) in liver tissues and TG in feces were detected, respectively. Hematoxylin-eosin(HE) staining was used to observe the pathological changes of liver tissues. The Real-time fluorescence quantitative PCR method was used to detect the expression of acetyl coa carboxylase(ACC) and hydroxymethylglutaryl-coa reductase(HMGCR) mRNA in liver tissues. The expression of mammalian target of rapamycin(mTORC1) protein and adenosine 5'-monophosphate-activated protein kinase(AMPK) in liver tissues were detected by Western blot. The analysis showed that the amino acid sequence of active peptide from E. steleophaga was DAVPGAGPAGCHPGAGP(DP17). The results of pharmacological experiments showed that after oral administration of DP17 in rats, the levels of TG, TC and LDL in serum as well as TG and TC levels in liver tissues were significantly decreased(P<0.05), while the levels of AMP, ATP in liver tissues and TG content in feces were significantly increased(P<0.05); the liver steatosis of rats was significantly relieved; the expression of ACC, HMGCR mRNA and mTORC1 protein in liver tissues were significantly reduced, while the expression of AMPK phosphorylated protein was significantly increased(P<0.05). DP17, the active peptide of E. steleophag can significantly reduce lipid accumulation in liver tissues, and it may play a role in reducing blood lipids by regulating the energy metabolism balance in the body and activating AMPK/mTOR signaling pathway.

Adjustable flexure mount to compensate for deformation of an optic surface.

An adjustable mounting structure is proposed to compensate for surface deformation of a mirror caused by the assembly process. The mount adopts a six-point support based on the kinematic mount principle. Three of the support points are adjustable, and they are moved along the axial direction by actuators. Surface deformation is expressed by Zernike coefficients in this paper, and a sensitivity matrix of the surface deformation is established by varying the unit displacement of each adjustment support point and getting the corresponding Zernike coefficient changes. The surface deformation is measured, and the compensation adjustment of each adjustable support point is then obtained by anti-sensitivity calculation. Finally, the feasibility of present support structure design and surface figure compensating method are verified by experiments. The experimental results show that the present structure and method could significantly reduce the surface deformation caused by the assembly process. The surface deformation is 4.6 nm RMS after assembly and it is decreased to 1.3 nm RMS after four iterations of compensation, which is close to the 1.1 nm RMS after optical polishing.

Effects of combined intervention of physical exercise and cognitive training on cognitive function in stroke survivors with vascular cognitive impairment: a randomized controlled trial.

OBJECTIVE:: This study evaluated the possible effect of the combined intervention of physical exercise and cognitive training on cognitive function in stroke survivals with vascular cognitive impairment. DESIGN:: A single-blind (investigator-blinded but not subject-blinded) randomized controlled trial. SETTING:: Medical Rehabilitation Center of Shanghai General Hospital, China. SUBJECTS:: A total of 225 patients (mean age 64.59 years, SD = 4.27) who exhibited vascular cognitive impairment were included in this study. INTERVENTIONS:: Patients were randomly allocated into one of the four groups: (1) physical exercise ( n = 56; 50-minute session), (2) cognitive training ( n = 57; 60-minute session), (3) combined intervention of physical exercise and cognitive training ( n = 55; 50-minute session + 60-minute session), or (4) control groups ( n = 57; 45-minute session). All participants received training for 36 sessions, three days per week, for 12 weeks. PRIMARY MEASURES:: Measures were recorded at baseline, after the intervention and at a six-month follow-up. Primary measurements included the Trail Making Part B, Stroop, forward digit span, and mental rotation tests. RESULTS:: A total of 179 participants (79.56% response rate) completed the study. Cognitive performances on all four tasks in the combined training group improved significantly after the intervention ( P < 0.01). Changes in cognitive performance were greater in the combined intervention group than those in the physical exercise group (e.g. forward digit span, 13.61% vs. 2.18%, P = 0.003), the cognitive training group (e.g. mental rotation, 17.36% vs. 0.87%, P = 0.002), and the control group (e.g. Stroop, -4.11% vs. -0.72%, P = 0.026). CONCLUSION:: The combined intervention produced greater benefits on cognitive function compared to either training alone in stroke survivors with vascular cognitive impairment.

Increased Lactate in Gastric Cancer Tumor-Infiltrating Lymphocytes Is Related to Impaired T Cell Function Due to miR-34a Deregulated Lactate Dehydrogenase A.

BACKGROUND/AIMS: Lactate is one of the products of glycolysis and is a hallmark of the Warburg effect. Glycolysis is found in tumor as well as immune cells. However, the effects of lactate on the function of tumor-infiltrating T cells (TILs) are rarely reported. METHODS: In the present study, we investigated lactate and other glycolysis-related metabolites within TILs of human gastric cancer (GC). Lactate concentration was determined by liquid chromatography-mass spectrometry. The functional effects and clinical relevance of excessive lactate on T cells were investigated in clinical samples, and the mechanism of increased lactate was explored. RESULTS: Lactate was significantly increased in GC TILs and related to decreased T helper (Th)1 cells and cytotoxic T lymphocytes (CTLs). Increased lactate within GC TILs was positively correlated with increased lactate dehydrogenase A (LDH)A. Expression of LDHA in GC TILs was also negatively correlated with percentages of Th1 cells and CTLs. Decreased miR-34a expression in GC TILs was responsible for increased expression of LDHA. A hypoxic tumor environment was responsible for decreased miR-34a and lactate-induced impaired immune function. CONCLUSION: We found that hypoxia decreases miR-34a expression and lose miR-34a regulation on LDHA, thus increasing lactate level within GC TILs and impairing immune function in GC.

Inhibition of human catechol-O-methyltransferase-mediated dopamine O-methylation by daphnetin and its Phase II metabolites.

1. Finding and developing inhibitors of catechol-O-methyltransferase (COMT) from natural products is highly recommended. Daphnetin, a naturally occurring catechol from the family thymelaeaceae, has a chemical structure similar to several potent COMT inhibitors reported previously. Here the potential of daphnetin and its Phase II metabolites as inhibitors of COMT was investigated with human liver cytosol (HLC). 2. Daphnetin and its methylated metabolite (8-O-methyldaphnetin) were found to inhibit COMT-mediated dopamine O-methylation in a dose-dependent manner. The IC50 values for daphnetin (0.51∼0.53 µM) and 8-O-methyldaphnetin (22.5∼24.3 µM) were little affected by changes in HLC concentrations. Further kinetic analysis showed the differences in inhibition type and parameters (Ki) between daphnetin (competitive, 0.37 µM) and 8-O-methyldaphnetin (noncompetitive, 25.7 µM). Other metabolites, including glucuronidated and sulfated species, showed negligible inhibition against COMT. By using in vitro-in vivo extrapolation (IV-IVE), a 24.3-fold increase in the exposure of the COMT substrates was predicted when they are co-administrated with daphnetin. 3. With high COMT-inhibiting activity, daphnetin could serve as a lead compound for the design and development of new COMT inhibitors. Also, much attention should be paid to the clinical impact of combination of daphnetin and herbal preparations containing daphnetin with the drugs primarily cleared by COMT.

Pericytes: a double-edged sword in cancer therapy.

Pericytes, which envelope the vascular endothelium throughout the body, are often targeted to promote vascular normalization and restore normal function of blood vessels in cancer treatment. The goals of pericyte-targeted therapy tend to promote proper vascular normalization of the tumor. Tumor vascular normalization prevents metastasis, increases tumor oxygenation (making radiation more effective in killing tumor cells), optimizes Starling forces to increase delivery of cancer cell-directed therapies (e.g., chemotherapy or targeted agents), increases the efficacy of focal therapies (e.g., surgery or radiation), and increases recognition by the host immune system. We review how approaches in pericyte-targeted therapy aim to reach a balance between pro-angiogenic and anti-angiogenic function (i.e., by targeting platelet-derived growth factor beta receptors, vascular endothelial growth factor receptors and Tie-2) for tumor vascular normalization.

A new method of building permanent A-V block model: ablating his-bundle potential through femoral artery with pre-implanted biventricular pacemaker.

BACKGROUND: To explore the feasibility of a new method of achieving a permanent A-V block animal model. METHODS: 16 beagles were randomly divided into two groups based on the method of their pre-implanted biventricular pacemakers. (1) In the first group (8 beagles), the A-V block model was achieved by ablating his-bundle potential at the site of the left ventricular superior-septum, under the aortic sinus, through femoral artery. (2) In the second group (8 beagles), the A-V block model was achieved by ablating his-bundle potential at the triangle of Koch, through femoral vein. A complete A-V block model was achieved as a standard in this study. The success rates, intraoperative arrhythmias, operative and X-ray exposure time, intraoperative bleeding amount were assessed in this two groups, both animal models were followed up for four weeks and then fasted to monitor myocardial pathological changes. RESULTS: The success rate of the first group, which with fewer intraoperative arrhythmias, and less operative and X-ray exposure time, was significantly higher than the second group. CONCLUSIONS: Compared with traditional animal method, our new method of ablating his-bundle potential at the left ventricle from the femoral artery has a higher success rate, fewer occurrence of malignant arrhythmias, and less operation and X-ray time. Thus, our new method should be preferred in the building of Permanent A-V Block Model.

The relationship between serum sialic acid and high-sensitivity C-reactive protein with prehypertension.

BACKGROUND: The aim of our study was to evaluate the serum concentration of sialic acid (SA) and high-sensitivity C-reactive protein (hs-CRP) in prehypertensive patients and the possible correlations between these 2 factors with blood pressure in such patients. MATERIAL AND METHODS: We studied 61 prehypertensive patients, 70 hypertensive patients, and 50 controls with normal blood pressure. Lipid profile, hs-CRP, SA, and body mass index (BMI) were estimated in all groups. Associations between SA and hs-CRP and blood pressure were analyzed using multiple linear regressions. RESULTS: SA and hs-CRP levels were higher in the prehypertension group than that in the control group and were lower than that in the hypertension group. Multiple linear regression demonstrated that fasting glucose, BMI, SA, and hs-CRP correlated with systolic blood pressure and that low-density lipoprotein, BMI, SA, and hs-CRP correlated independently with diastolic pressure (P<0.05). CONCLUSIONS: Our findings suggest that in prehypertension, there is an association between serum SA and hs-CRP levels and blood pressure.

Unenhanced low-dose versus standard-dose CT localization in patients with upper urinary calculi for minimally invasive percutaneous nephrolithotomy (MPCNL).

BACKGROUND & OBJECTIVES: With the ethical concern about the dose of CT scan and wide use of CT in protocol of suspected renal colic, more attention has been paid to low dose CT. The aim of the present study was to make a comparison of unenhanced low-dose spiral CT localization with unenhanced standard-dose spiral CT in patients with upper urinary tract calculi for minimally invasive percutaneous nephrolithotomy (MPCNL) treatment. METHODS: Twenty eight patients with ureter and renal calculus, preparing to take MPCNL, underwent both abdominal low-dose CT (25 mAs) and standard-dose CT (100 mAs). Low-dose CT and standard-dose CT were independently evaluated for the characterization of renal/ureteral calculi, perirenal adjacent organs, blood vessels, indirect signs of renal or ureteral calculus (renal enlargement, pyeloureteral dilatation), and the indices of localization (percutaneous puncture angulation and depth) used in the MPCNL procedure. RESULTS: In all 28 patients, low-dose CT was 100 per cent coincidence 100 per cent sensitive and 100 per cent specific for depicting the location of the renal and ureteral calculus, renal enlargement, pyeloureteral dilatation, adjacent organs, and the presumptive puncture point and a 96.3 per cent coincidence 96 per cent sensitivity and 93 per cent specificity for blood vessel signs within the renal sinus, and with an obvious lower radiation exposure for patients when compared to standard-dose CT (P<0.05). The indices of puncture depth, puncture angulation, and maximum calculus transverse diameter on the axial surface showed no significant difference between the two doses of CT scans, with a significant variation in calculus visualization slice numbers (P<0.05). INTERPRETATION & CONCLUSIONS: Our findings show that unenhanced low-dose CT achieves a sensitivity and accuracy similar to that of standard-dose CT in assessing the localization of renal ureteral calculus and adjacent organs conditions and identifying the maximum calculus transverse diameter on the axial surface, percutaneous puncture depth, and angulation in patients, with a significant lower radiation exposure, who are to be treated by MPCNL, and can be used as an alternative localization method.

Inferior vena cava hemangioma resected using a novel Toumai robotic surgical platform.

This study aims to investigate the significance of using the Toumai robotic platform for the resection of inferior vena cava (IVC) hemangiomas. Our objective is to provide information on the potential benefits of this innovative approach in managing these uncommon vascular tumors and to contribute to the growing body of knowledge in the field of surgical oncology and vascular surgery. A 37-year-old female patient with an incidental finding of a right retroperitoneal mass underwent contrast-enhanced magnetic resonance imaging, which confirmed the diagnosis of an IVC hemangioma. Due to the rarity and complexity of this vascular tumor, the medical team opted for a novel approach using the Toumai robotic surgical platform (Shanghai MicroPort MedBot Group Co, Ltd). Under general anesthesia, the patient was placed in the left lateral decubitus position, and the robotic arms were controlled remotely through the Toumai platform. A transperitoneal approach was adopted, and the surgeon meticulously resected the tumor while preserving the integrity of the IVC. The use of the Toumai robotic platform facilitated precise tumor resection, minimizing the risk of damage to surrounding structures. The minimally invasive nature of the robotic surgery contributed to a reduced incidence of postoperative complications and accelerated patient recovery. Furthermore, the remote fifth-generation mobile network surgical capabilities of the Toumai platform allow for expert care to be provided to patients despite geographic barriers. The robotic-assisted surgical approach using the Toumai platform demonstrates its potential benefits in managing rare and complex vascular tumors such as IVC hemangiomas. Robotic technology has the potential to revolutionize the field of surgical oncology and vascular surgery, leading to improved patient outcomes and healthcare delivery. However, more extensive clinical studies and larger case series are needed to validate the long-term safety and efficacy of this innovative surgical approach. Continued research and collaboration between clinicians and robotic technology experts are essential to fully realize the potential of robotic-assisted surgery for the benefit of patients with rare and challenging medical conditions.