Your browser doesn't support javascript.
loading
Montrer: 20 | 50 | 100
Résultats 1 - 20 de 19.219
Filtrer
1.
Vet Med Sci ; 10(4): e1510, 2024 Jul.
Article de Anglais | MEDLINE | ID: mdl-38889102

RÉSUMÉ

BACKGROUND: Radiographic assessment of the intrathoracic caudal vena cava (CVC) is commonly used to evaluate hemodynamic status in veterinary patients without and with pulmonary, pericardial, or right-sided cardiac diseases. Many of these patients are now commonly evaluated with computed tomography (CT) in both emergency and referral settings. Traditional radiographic ratios in dogs, particularly the CVC height/aorta height (CVC/Ao) ratio, are often extrapolated to CT in order to determine if the CVC is normal in size. OBJECTIVES: The first goal of this retrospective study was to create an objective measurement method to evaluate the size of the CVC via CT. The second goal was to report normal CVC ratio values in both sagittal and transverse CT images. METHODS: The traditional lateral radiographic CVC ratios were extrapolated to similar ratios obtained from sagittal CT images in stable, sedated adult canine patients without known cardiac or pulmonary disease. Additionally, new methods of canine CVC ratios using transverse CT images were defined using vessel height and area. Mean, standard deviation, and 95% confidence intervals (CIs) of the CVC ratios in transverse and sagittal CT images were calculated to determine normal reference ranges. RESULTS: Ratio agreement from observers of different skill levels was moderate to excellent. Sagittal CT CVC/Ao mean was 1.07 ± 0.17 with a CI of 0.71.42. The mean and CI of transverse CT CVC/Ao height and area were 1.14 ± 0.27 and 0.781.44 and 1.36 ± 0.59 and 0.641.94, respectively. CONCLUSIONS: Application of normal sagittal and transverse CT ratio values in canine patients with and without hypotension, pulmonary, pericardial, or right-sided cardiac diseases is necessary to determine the clinical usefulness of these ratios.


Sujet(s)
Tomodensitométrie , Veine cave inférieure , Animaux , Chiens , Études rétrospectives , Veine cave inférieure/imagerie diagnostique , Tomodensitométrie/médecine vétérinaire , Valeurs de référence , Mâle , Femelle , Maladies des chiens/imagerie diagnostique
3.
In Vivo ; 38(4): 2080-2084, 2024.
Article de Anglais | MEDLINE | ID: mdl-38936928

RÉSUMÉ

BACKGROUND/AIM: We report on a case of locally advanced hepatocellular carcinoma (HCC) accompanied by an inferior vena cava tumor thrombus (IVCTT), treated successfully with proton-beam therapy (PBT). CASE REPORT: A 63-year-old male presented with a primary, single HCC with IVCTT, without metastasis to the intrahepatic region, lymph nodes, or distant organs. The clinical staging was identified as T4N0M0 Stage IIIB. The patient's liver function was classified as Child-Pugh class A (score: 6), with a modified albumin-bilirubin (mALBI) grade of 2a. The patient had liver cirrhosis due to non-alcoholic steatohepatitis. Magnetic resonance imaging revealed a nodular tumor measuring 13.2×8.9×9.8 cm across segments 1, 6, 7, and 8, along with IVCTT. The patient received PBT, with a total dose of 72.6 Gy (relative biological effectiveness) delivered in 22 fractions. Throughout the PBT treatment, the patient experienced no acute toxicities and completed the therapy as planned. Twelve months following PBT, the patient was alive without evidence of local recurrence, lymph node involvement, or distant organ metastasis. The only late toxicity observed was a mild worsening of the mALBI grade. CONCLUSION: We observed a favorable local response with manageable toxicities in a patient with locally advanced HCC and IVCTT treated with PBT. While this is a single case report, our findings suggest that PBT could be considered a viable treatment option for HCC with IVCTT.


Sujet(s)
Carcinome hépatocellulaire , Tumeurs du foie , Protonthérapie , Veine cave inférieure , Humains , Mâle , Tumeurs du foie/radiothérapie , Tumeurs du foie/anatomopathologie , Tumeurs du foie/thérapie , Carcinome hépatocellulaire/radiothérapie , Carcinome hépatocellulaire/anatomopathologie , Carcinome hépatocellulaire/thérapie , Carcinome hépatocellulaire/complications , Adulte d'âge moyen , Veine cave inférieure/anatomopathologie , Veine cave inférieure/imagerie diagnostique , Résultat thérapeutique , Imagerie par résonance magnétique , Stadification tumorale , Thrombose veineuse/étiologie , Thrombose veineuse/anatomopathologie , Thrombose veineuse/radiothérapie , Thrombose veineuse/thérapie
4.
Fa Yi Xue Za Zhi ; 40(2): 179-185, 2024 Apr 25.
Article de Anglais, Chinois | MEDLINE | ID: mdl-38847034

RÉSUMÉ

OBJECTIVES: To detect the expression changes of interleukin-10 (IL-10) and transforming growth factor-ß1 (TGF-ß1) during the development of deep vein thrombosis in mice, and to explore the application value of them in thrombus age estimation. METHODS: The mice in the experimental group were subjected to ligation of inferior vena cava. The mice were sacrificed by excessive anesthesia at 1 d, 3 d, 5 d, 7 d, 10 d, 14 d and 21 d after ligation, respectively. The inferior vena cava segment with thrombosis was extracted below the ligation point. The mice in the control group were not ligated, and the inferior vena cava segment at the same position as the experimental group was extracted. The expression changes of IL-10 and TGF-ß1 were detected by immunohistochemistry (IHC), Western blotting and real-time qPCR. RESULTS: IHC results revealed that IL-10 was mainly expressed in monocytes in thrombosis and TGF-ß1 was mainly expressed in monocytes and fibroblast-like cells in thrombosis. Western blotting and real-time qPCR showed that the relative expression levels of IL-10 and TGF-ß1 in each experimental group were higher than those in the control group. The mRNA and protein levels of IL-10 reached the peak at 7 d and 10 d after ligation, respectively. The mRNA expression level at 7 d after ligation was 4.72±0.15 times that of the control group, and the protein expression level at 10 d after ligation was 7.15±0.28 times that of the control group. The mRNA and protein levels of TGF-ß1 reached the peak at 10 d and 14 d after ligation, respectively. The mRNA expression level at 10 d after ligation was 2.58±0.14 times that of the control group, and the protein expression level at 14 d after ligation was 4.34±0.19 times that of the control group. CONCLUSIONS: The expressions of IL-10 and TGF-ß1 during the evolution of deep vein thrombosis present time-dependent sequential changes, and the expression levels of IL-10 and TGF-ß1 can provide a reference basis for thrombus age estimation.


Sujet(s)
Modèles animaux de maladie humaine , Immunohistochimie , Interleukine-10 , Facteur de croissance transformant bêta-1 , Veine cave inférieure , Thrombose veineuse , Animaux , Interleukine-10/métabolisme , Interleukine-10/génétique , Facteur de croissance transformant bêta-1/métabolisme , Facteur de croissance transformant bêta-1/génétique , Thrombose veineuse/métabolisme , Thrombose veineuse/étiologie , Souris , Veine cave inférieure/métabolisme , Veine cave inférieure/anatomopathologie , Mâle , Facteurs temps , Monocytes/métabolisme , Technique de Western , ARN messager/métabolisme , ARN messager/génétique , Réaction de polymérisation en chaine en temps réel , Ligature , Fibroblastes/métabolisme
5.
J Vis Exp ; (207)2024 May 24.
Article de Anglais | MEDLINE | ID: mdl-38856208

RÉSUMÉ

Balloon venoplasty is a commonly used clinical technique to treat deep vein stenosis and occlusion as a consequence of trauma, congenital anatomic abnormalities, acute deep vein thrombosis (DVT), or stenting. Chronic deep venous obstruction is histopathologically characterized by thrombosis, fibrosis, or both. Currently, no direct treatment is available to target these pathological processes. Therefore, a reliable in vivo animal model to test novel interventions is necessary. The rodent survival inferior vena cava (IVC) venoplasty balloon model (VBM) allows the study of balloon venoplasty in non-thrombotic and post-thrombotic conditions across multiple time points. The local and systemic effect of coated and uncoated venoplasty balloons can be quantified via tissue, thrombus, and blood assays such as real-time polymerase chain reaction (RT-PCR), western blot, enzyme-linked immunosorbent assay (ELISA), zymography, vein wall and thrombus cellular analysis, whole blood and plasma assays, and histological analysis. The VBM is reproducible, replicates surgical human interventions, can identify local vein wall-thrombi protein changes, and allows multiple analyses from the same sample, decreasing the number of animals required per group.


Sujet(s)
Modèles animaux de maladie humaine , Veine cave inférieure , Thrombose veineuse , Veine cave inférieure/chirurgie , Animaux , Rats , Thrombose veineuse/anatomopathologie , Souris
6.
Saudi Med J ; 45(5): 525-530, 2024 May.
Article de Anglais | MEDLINE | ID: mdl-38734441

RÉSUMÉ

OBJECTIVES: To compare vascular scanning parameters (vessel diameter, peak systolic velocity, end-diastolic velocity, and resistive index) and scanning time before and after breathing control training program for selected abdominal vessels. METHODS: This study was pre and post quasi-experimental. The researchers designed a breathing training program that gives participants instructions through a video describing breathing maneuvers. Data were collected at the ultrasound laboratory/College of Health and Rehabilitation Sciences in Princess Nourah bint Abdul Rahman University, Riyadh, Saudi Arabia from January 2023 to November 2023. About 49 volunteers at the university participated in the study. Scanning was performed two times for the right renal artery, upper abdominal aorta, inferior vena cava, and superior mesenteric artery. Scanning time was measured before and after the program as well. A paired sample t-test was used to compare the parameters means and time before and after the program. RESULTS: The program had a significant effect on the following parameters: right renal artery peak systolic velocity (p=0.042), upper abdominal aortic peak systolic velocity, and resistive index (p=0.014, p=0.014 respectively), superior mesenteric artery and inferior vena cava diameters (p=0.010 and p=0.020). The scanning time was reduced significantly (p<0.001). CONCLUSION: The breathing training program saves time and improves ultrasound measurement quality. Hospitals and health centers should consider the importance of breathing control training programs before abdominal scanning.


Sujet(s)
Aorte abdominale , Artère rénale , Échographie , Veine cave inférieure , Humains , Mâle , Échographie/méthodes , Femelle , Adulte , Aorte abdominale/imagerie diagnostique , Veine cave inférieure/imagerie diagnostique , Artère rénale/imagerie diagnostique , Abdomen/imagerie diagnostique , Abdomen/vascularisation , Artère mésentérique supérieure/imagerie diagnostique , Jeune adulte , Exercices respiratoires/méthodes , Vitesse du flux sanguin , Arabie saoudite , Respiration
8.
Arch Esp Urol ; 77(3): 292-302, 2024 Apr.
Article de Anglais | MEDLINE | ID: mdl-38715171

RÉSUMÉ

BACKGROUND: Renal cell carcinoma (RCC), a common and highly invasive malignant tumour, presents clinical challenges due to its propensity for easy metastasis. Inferior vena cava tumour thrombus is a common RCC complication significantly impacting patient prognosis. This study investigates C-X-C chemokine receptor type 2 (CXCR2)/Snail-1-induced epithelial-mesenchymal transition (EMT) in RCC with inferior vena cava tumour thrombus. METHODS: Tissues from 51 RCC patients were analysed for CXCR2 and Snail-1 Messenger Ribonucleic Acid (mRNA) levels using Quantitative Real-Time Polymerase Chain Reaction (qRT-PCR). Elevated levels of both were observed in tumour and inferior vena cava tumour thrombus tissues. Using Short Hairpin RNA (shRNA) technology, we inhibited CXCR2 and Snail-1 expression to investigate their impact on EMT, invasiveness, and metastatic potential in RCC cells. RESULTS: Compared with that in the Short Hairpin RNA-Negative Control (ShNC) group, inhibition of CXCR2 and Snail-1 suppressed the degree of EMT, invasiveness, and metastatic ability of RCC cells (p < 0.01). Further mechanistic studies showed that CXCR2/Snail-1 participated in the formation and progression of RCC by regulating the extracellular signal-regulated kinase 1/2 (ERK1/2) signalling pathways. Additionally, compared with that in the ShNC group, knockdown of CXCR2 and Snail-1 significantly inhibited the expression of vascular endothelial growth factor (VEGF) and matrix metalloproteinase-9 (MMP-9; p < 0.01), thereby regulating the metastasis of RCC. CONCLUSIONS: Our findings suggest that CXCR2/Snail-1-induced EMT plays an important role in the formation and progression of RCC with inferior vena cava tumour thrombus. CXCR2/Snail-1 participates in the invasion and metastasis of RCC by regulating the expression of multiple signalling pathways and related genes. These results provide new insights and directions for the treatment of RCC.


Sujet(s)
Néphrocarcinome , Évolution de la maladie , Transition épithélio-mésenchymateuse , Tumeurs du rein , Facteurs de transcription de la famille Snail , Veine cave inférieure , Sujet âgé , Femelle , Humains , Mâle , Adulte d'âge moyen , Néphrocarcinome/métabolisme , Néphrocarcinome/anatomopathologie , Néphrocarcinome/secondaire , Tumeurs du rein/anatomopathologie , Tumeurs du rein/métabolisme , Invasion tumorale , Facteurs de transcription de la famille Snail/métabolisme , Cellules cancéreuses en culture , Veine cave inférieure/anatomopathologie
9.
J Vis Exp ; (206)2024 Apr 26.
Article de Anglais | MEDLINE | ID: mdl-38738890

RÉSUMÉ

Synthetic vascular grafts overcome some challenges of allografts, autografts, and xenografts but are often more rigid and less compliant than the native vessel into which they are implanted. Compliance matching with the native vessel is emerging as a key property for graft success. The current gold standard for assessing vessel compliance involves the vessel's excision and ex vivo biaxial mechanical testing. We developed an in vivo method to assess venous compliance and distensibility that better reflects natural physiology and takes into consideration the impact of a pressure change caused by flowing blood and by any morphologic changes present. This method is designed as a survival procedure, facilitating longitudinal studies while potentially reducing the need for animal use. Our method involves injecting a 20 mL/kg saline bolus into the venous vasculature, followed by the acquisition of pre and post bolus 3D angiograms to observe alterations induced by the bolus, concurrently with intravascular pressure measurements in target regions. We are then able to measure the circumference and the cross-sectional area of the vessel pre and post bolus. With these data and the intravascular pressure, we are able to calculate the compliance and distensibility with specific equations. This method was used to compare the inferior vena cava's compliance and distensibility in native unoperated sheep to the conduit of sheep implanted with a long-term expanded polytetrafluorethylene (PTFE) graft. The native vessel was found to be more compliant and distensible than the PTFE graft at all measured locations. We conclude that this method safely provides in vivo measurements of vein compliance and distensibility.


Sujet(s)
Veine cave inférieure , Animaux , Veine cave inférieure/physiologie , Veine cave inférieure/imagerie diagnostique , Veine cave inférieure/chirurgie , Ovis , Angiographie/méthodes , Imagerie tridimensionnelle/méthodes , Modèles animaux
10.
Medicine (Baltimore) ; 103(21): e38056, 2024 May 24.
Article de Anglais | MEDLINE | ID: mdl-38788046

RÉSUMÉ

RATIONALE: Intimal sarcoma of inferior vena cava (IVC) is a rare soft tissue sarcoma with no typical symptoms and specific imaging features in the early stage, and there is a lack of standardized treatment and methods. PATIENT CONCERNS: A 54-year-old female patient presented to Fenghua District People's Hospital with a post-active cough and hemoptysis and was subsequently referred to our hospital. DIAGNOSES: The patient was pathologically diagnosed as intimal sarcoma of IVC complicating multiple intrapulmonary metastases. Chest CT revealed left lung malignant tumor with multiple intrapulmonary metastases; while enhanced upper abdominal CT showed cancer embolus of IVC with extension to right atrium and bilateral renal veins. Besides, hematoxylin and eosin staining suggested intimal sarcoma of veins. Immunohistochemical staining showed positivity for PD-L1, Ki-67, CD31, Desmin and ERG. INTERVENTIONS: The patient initially received GT chemotherapy (gemcitabine injection + docetaxel). Then, immunotherapy (tislelizumab) was added based on the results of genetic testing (TP53 gene mutation). OUTCOMES: The disease was stabilized after receiving the treatment. LESSONS: Given the lack of characteristic clinical manifestations in patients with intimal sarcoma of IVC, imaging examination combined with immunohistochemical index were helpful for diagnosis of intimal sarcoma of IVC. Furthermore, the combination of tislelizumab and GT chemotherapy was feasible in such patients with positive PD-L1 expression and TP53 mutation.


Sujet(s)
Anticorps monoclonaux humanisés , Sarcomes , Veine cave inférieure , Humains , Femelle , Adulte d'âge moyen , Veine cave inférieure/anatomopathologie , Sarcomes/traitement médicamenteux , Anticorps monoclonaux humanisés/usage thérapeutique , Anticorps monoclonaux humanisés/administration et posologie , Tumeurs vasculaires/traitement médicamenteux , Tumeurs vasculaires/anatomopathologie , Tumeurs vasculaires/diagnostic , Protocoles de polychimiothérapie antinéoplasique/usage thérapeutique , , Désoxycytidine/analogues et dérivés , Désoxycytidine/usage thérapeutique , Désoxycytidine/administration et posologie , Tumeurs du poumon/traitement médicamenteux , Tumeurs du poumon/secondaire , Tumeurs du poumon/anatomopathologie
11.
Methodist Debakey Cardiovasc J ; 20(3): 49-56, 2024.
Article de Anglais | MEDLINE | ID: mdl-38765211

RÉSUMÉ

For patients with existing venous thromboembolisms (VTEs), anticoagulation remains the standard of care recommended across multiple professional organizations. However, for patients who developed a deep venous thrombosis (DVT) and/or a pulmonary embolism and cannot tolerate anticoagulation, inferior vena cava (IVC) filters must be considered among other alternative treatments. Although placement of a filter is considered a low-risk intervention, there are important factors and techniques that surgeons and interventionalists should be aware of and prepared to discuss. This overview covers the basics regarding the history of filters, indications for placement, associated risks, and techniques for difficult removal.


Sujet(s)
Ablation de dispositif , Conception de prothèse , Implantation de prothèse , Embolie pulmonaire , Filtres caves , Thrombose veineuse , Humains , Embolie pulmonaire/prévention et contrôle , Thrombose veineuse/prévention et contrôle , Thrombose veineuse/thérapie , Facteurs de risque , Implantation de prothèse/instrumentation , Implantation de prothèse/effets indésirables , Résultat thérapeutique , Thromboembolisme veineux/prévention et contrôle , Thromboembolisme veineux/diagnostic , Veine cave inférieure/imagerie diagnostique , Appréciation des risques , Anticoagulants/usage thérapeutique , Anticoagulants/effets indésirables
12.
Open Vet J ; 14(4): 1076-1080, 2024 Apr.
Article de Anglais | MEDLINE | ID: mdl-38808297

RÉSUMÉ

Background: Segmental aplasia of the caudal vena cava (CVC) with azygos continuation is a congenital malformation macroscopically described in mammals including humans, dogs, and rodents. It is usually detected as an incidental finding and the final diagnosis is reached by computed tomography (CT), fluoroscopy, or post-mortem dissection. Case Description: A 3-year-old guinea pig (Cavia porcellus) presented with subacute dyspnea. A computed tomographic examination was performed for the evaluation of subtle pulmonary changes previously suspected on conventional radiography, and a segmental aplasia of the CVC with azygos continuation was identified as an incidental finding. Conclusion: According to database negative results, this is the first report describing a segmental aplasia of the CVC and azygos continuation in a guinea pig by CT.


Sujet(s)
Veine azygos , Tomodensitométrie , Veine cave inférieure , Animaux , Tomodensitométrie/médecine vétérinaire , Cochons d'Inde , Veine azygos/malformations , Veine azygos/imagerie diagnostique , Veine cave inférieure/malformations , Veine cave inférieure/imagerie diagnostique , Résultats fortuits , Mâle , Femelle
13.
Echocardiography ; 41(6): e15850, 2024 Jun.
Article de Anglais | MEDLINE | ID: mdl-38818775

RÉSUMÉ

BACKGROUND: Accurately stratifying patients with pulmonary arterial hypertension (PAH) is very important, and traditional risk scores still have internal heterogeneity. This study aimed to construct a risk stratification model that can accurately identify clinical worsening (CW) events in conventional low-intermediate risk patients with pulmonary hypertension under targeted drug treatment by using echocardiographic parameters. METHODS: This study is a single-center, prospective study, including 105 PAH patients who underwent regular follow-up at Guangdong Provincial People's Hospital from October 2021 to April 2023. The primary endpoint was the occurrence of CW, including death, hospitalization due to pulmonary hypertension, escalation of targeted drug therapy, and worsening of PAH. The predictive value of the echocardiography-based three-strata risk model was assessed using Kaplan-Meier curves and COX regression analysis. RESULTS: A total of 98 PAH patients were ultimately included in this study. The median follow-up duration was 26 months (range 7-28 months). The echocardiography-based three-strata model included the ratio of tricuspid annular plane systolic excursion and pulmonary artery systolic pressure (TAPSE/PASP) and inferior vena cava (IVC). The echocardiography-based three-strata model had higher diagnostic value (C-index = .76) compared to the 2022 ESC/ERS three-strata model and four-strata model (C-index = .66 and C-index = .61, respectively). PAH patients with lower TAPSE/PASP and wider IVC showed a higher CW rate compared to patients with higher TAPSE/PASP and normal IVC (HR = 15.1, 95%CI:4.4-51.9, p < .001). CONCLUSION: The echocardiography-based three-strata model based on TAPSE/PASP and IVC can effectively improve the stratification of low-intermediate risk PAH patients under targeted treatment.


Sujet(s)
Échocardiographie , Ventricules cardiaques , Artère pulmonaire , Veine cave inférieure , Humains , Mâle , Femelle , Échocardiographie/méthodes , Adulte d'âge moyen , Études prospectives , Appréciation des risques/méthodes , Ventricules cardiaques/imagerie diagnostique , Ventricules cardiaques/physiopathologie , Artère pulmonaire/imagerie diagnostique , Artère pulmonaire/physiopathologie , Veine cave inférieure/imagerie diagnostique , Veine cave inférieure/physiopathologie , Adulte , Hypertension artérielle pulmonaire/physiopathologie , Hypertension artérielle pulmonaire/traitement médicamenteux , Hypertension artérielle pulmonaire/complications , Hypertension pulmonaire/physiopathologie , Hypertension pulmonaire/complications , Études de suivi
14.
Langenbecks Arch Surg ; 409(1): 160, 2024 May 17.
Article de Anglais | MEDLINE | ID: mdl-38758232

RÉSUMÉ

PURPOSE: Intraoperative bleeding during hepatectomy is primarily controlled through anaesthesiological interventions or surgical techniques such as Pringle maneuver (PM). Infrahepatic IVC clamping (IIVCC) is an alternative surgical technique to reduce central venous pressure and prevent retrograde hepatic venous bleeding. The aim of the meta-analysis was to compare IIVCC+PM with PM alone in terms of intraoperative outcomes and perioperative complications. METHODS: Medline, Cochrane Library, Scopus, Web of Science, and EMBASE were searched for comparative studies till 16.04.2024, resulting in 679 articles, of which eight studies met inclusion criteria. Data on patient demographics, surgical technique, and perioperative outcomes was assessed. Cochrane Risk of Bias 2.0 (RoB 2.0) Tool and Newcastle-Ottawa Scale (NOS) were used for risk of bias assessment. RESULTS: Two randomized controlled trials, one prospective, and five retrospective cohort studies with 358 patients in IIVCC+PM and 397 patients in PM alone group were included. IIVCC+PM resulted in significantly greater CVP reduction, less intraoperative blood loss (MD (95% CI) = - 233.03 (- 360.48 to - 105.58), P < 0.001), and less intraoperative blood transfusion (OR (95% CI) = 0.38 (0.25 to 0.57), P < 0.001) compared to PM alone. The two groups had comparable total operative time, transection time and total intraoperative fluid infusion. Patients undergoing IIVCC+PM had significantly shorter length of stay (MD (95% CI) = - 0.63 days (- 1.21 to - 0.05 days), P = 0.03) and overall complication rates (OR (95% CI) = 0.63 (0.43-0.92), P = 0.02) compared to PM alone group. CONCLUSION: The utilization of IIVCC along with PM during liver resection may be beneficial in reducing intraoperative bleeding and blood transfusion without adversely influencing operative times or perioperative outcomes compared to PM alone.


Sujet(s)
Perte sanguine peropératoire , Hépatectomie , Veine cave inférieure , Hépatectomie/méthodes , Hépatectomie/effets indésirables , Humains , Veine cave inférieure/chirurgie , Perte sanguine peropératoire/prévention et contrôle , Perte sanguine peropératoire/statistiques et données numériques , Constriction , Durée opératoire
15.
Curr Urol Rep ; 25(6): 117-124, 2024 Jun.
Article de Anglais | MEDLINE | ID: mdl-38763948

RÉSUMÉ

PURPOSE OF REVIEW: Renal cell carcinoma presents a unique proclivity for vascular involvement giving rise to a peculiar form of locally advanced disease so-called tumor thrombus. To date, the only curative strategy for these cases remains surgery, which should aim to remove every vestige of macroscopic disease. Most of the preexisting literature advocates opening the vena cava to allow tumor thrombus removal and subsequent venous suture closure. However, inferior vena cava circumferential resection (cavectomy) without caval replacement is possible in the majority of cases since progressive occlusion facilitates the development of a collateral venous network aimed at maintaining cardiac preload. RECENT FINDINGS: Radical nephrectomy with tumor thrombectomy remains a surgical challenge not exempt of operative complications even in experienced hands. In opposition to what traditional cavotomy and thrombus withdrawal can offer, circumferential cavectomy without caval replacement would provide comparable or even better oncologic control, decrease the likelihood of operative bleeding, and prevent the development of perioperative pulmonary embolism. This review focuses on the rationale of circumferential IVC resection without caval replacement and the important technical aspects of this approach in cases of renal cell carcinoma with vascular involvement. We also include an initial report on the surgical outcomes of a contemporary series of patients managed under this approach at our center.


Sujet(s)
Néphrocarcinome , Tumeurs du rein , Cellules tumorales circulantes , Néphrectomie , Veine cave inférieure , Humains , Néphrocarcinome/chirurgie , Tumeurs du rein/chirurgie , Veine cave inférieure/chirurgie , Néphrectomie/méthodes , Thrombectomie/méthodes
16.
Langenbecks Arch Surg ; 409(1): 168, 2024 May 30.
Article de Anglais | MEDLINE | ID: mdl-38819706

RÉSUMÉ

PURPOSE: To evaluate the safety and efficacy of two-step vascular exclusion and in situ hypothermic portal perfusion in patients with end-stage hepatic hydatidosis. METHODS: This study involved patients with advanced hepatic hydatid disease undergoing surgical treatment between 2022 and 2023, which included resection and reconstruction of the hepatic veins, inferior vena cava (IVC), and portal vein (PV). We described the technical details of liver resection and vascular reconstruction, as well as the use of two-step vascular exclusion and in situ hypothermic portal perfusion techniques during the vascular reconstruction process. RESULT: We included 7 patients with advanced hepatic hydatid disease who underwent surgical resection using two-step vascular exclusion and in situ hypothermic portal perfusion. The mean duration of surgery was 12.5 h (range, 7.5-15.0 h). The average hepatic ischemia time was 45 min (range, 25-77 min), while the occlusion time of the IVC was 87 min (range, 72-105 min). The total blood loss was 1000 milliliters (range, 500-1250 milliliters). Postoperatively, patients exhibited good recovery of liver and renal function. The mean ICU stay was 2 days (range, 1-3 days), and the mean postoperative hospital stay was 13 days (range, 9-16 days), with no Grade III or above complications observed during a mean follow-up period of 15 months (range, 9-24 months), CONCLUSION: two-step vascular exclusion and in situ hypothermic portal perfusion for surgical resection of end-stage hepatic hydatid disease is safe and effective. This significantly reduces the anhepatic time.


Sujet(s)
Échinococcose hépatique , Hépatectomie , Veine porte , Veine cave inférieure , Humains , Échinococcose hépatique/chirurgie , Échinococcose hépatique/imagerie diagnostique , Mâle , Femelle , Hépatectomie/méthodes , Adulte , Adulte d'âge moyen , Veine porte/chirurgie , Veine cave inférieure/chirurgie , Hypothermie provoquée , Résultat thérapeutique , Perfusion/méthodes , Études rétrospectives , Veines hépatiques/chirurgie , Sujet âgé
17.
Curr Opin Crit Care ; 30(3): 260-267, 2024 06 01.
Article de Anglais | MEDLINE | ID: mdl-38690955

RÉSUMÉ

PURPOSE OF REVIEW: Venous pressure is an often-unrecognized cause of patient morbidity. However, bedside assessment of PV is challenging. We review the clinical significance of venous pressure measurement, existing techniques, and introduce the Venous Excess Ultrasound (VExUS) Score as a novel approach using doppler ultrasound to assess venous pressure. RECENT FINDINGS: Studies show clear associations between elevated venous pressure and adverse outcomes in critically ill patients. Current venous pressure measurement techniques include physical examination, right heart catheterization (RHC), two-dimensional ultrasound, and a variety of labor-intensive research-focused physiological maneuvers. Each of these techniques have specific shortcomings, limiting their clinical utility. To address these gaps, Beaubien-Souligny et al. introduced the VExUS Score, a novel doppler ultrasound-based method that integrates IVC diameter with doppler measurements of the hepatic, portal, and renal veins to generate a venous congestion assesment. Studies show strong correlations between VExUS score and RHC measurements, and well as an association between VExUS score and improvement in cardiorenal acute kidney injury, diuretic response, and fluid status shifts. However, studies in noncardiac populations have been small, heterogenous, and inconclusive. SUMMARY: Early studies evaluating the use of doppler ultrasound to assess venous congestion show promise, but further research is needed in diverse patient populations and clinical settings.


Sujet(s)
Échographie-doppler , Humains , Échographie-doppler/méthodes , Maladie grave , Pression veineuse/physiologie , Veine cave inférieure/imagerie diagnostique , Veine cave inférieure/physiopathologie , Monitorage physiologique/méthodes , Soins de réanimation/méthodes
18.
Ann Surg Oncol ; 31(7): 4787-4794, 2024 Jul.
Article de Anglais | MEDLINE | ID: mdl-38727768

RÉSUMÉ

BACKGROUND: Renal function after left renal vein (LRV) ligation following en bloc resection of segmental inferior vena cava (IVC) and right kidney is understudied. We assessed the impact of LRV ligation on postoperative renal function following en bloc resection of segmental IVC and right kidney. METHODS: We retrospectively reviewed 28 patients who underwent LRV ligation during en bloc resection of segmental IVC and right kidney. Patient demographics, tumor characteristics, intraoperative factors, complications, length of hospital and intensive care unit (ICU) stay, and patient survival were collected. Pre- and postoperative renal function was retrospectively analyzed. RESULTS: Twenty patients underwent robot-assisted surgery and eight patients underwent open surgery. The median operative time was 162 min and estimated blood loss was 350 mL. Ten patients had normal renal function and 12 patients had an initial increase in creatinine but improved gradually. Six patients developed acute renal failure; five patients gradually recovered in 5-32 days after temporary hemodialysis. Renal replacement therapy significantly correlated with maximal anterior-posterior diameter of the LRV (p = 0.001). Complications were observed in 11 cases, four of which were Clavien-Dindo grades I-II. Thirteen patients were alive with no recurrence, nine patients were alive with metastasis, and six cases died during the follow-up period. CONCLUSIONS: LRV ligation following en bloc resection of segmental IVC and right kidney is feasible, with no significant long-term impact on renal function. The maximum anterior-posterior diameter of the LRV is a reliable method for predicting renal replacement therapy in the absence of collateral circulation.


Sujet(s)
Tumeurs du rein , Veines rénales , Veine cave inférieure , Humains , Veine cave inférieure/chirurgie , Veine cave inférieure/anatomopathologie , Mâle , Femelle , Veines rénales/chirurgie , Études rétrospectives , Adulte d'âge moyen , Ligature , Tumeurs du rein/chirurgie , Tumeurs du rein/anatomopathologie , Sujet âgé , Études de suivi , Adulte , Taux de survie , Néphrectomie/méthodes , Complications postopératoires , Pronostic , Rein/chirurgie , Interventions chirurgicales robotisées/méthodes , Tests de la fonction rénale , Néphrocarcinome/chirurgie , Néphrocarcinome/anatomopathologie
19.
Asian J Endosc Surg ; 17(3): e13311, 2024 Jul.
Article de Anglais | MEDLINE | ID: mdl-38622753

RÉSUMÉ

We present a rare case involving a 54-year-old man with a history of pancreatitis who developed a retroperitoneal lumbar vein aneurysm that was initially misidentified as a pancreatic pseudocyst. Subsequent imaging revealed an enlarged mass and retroperitoneal perforation. Despite initial hesitation, the patient eventually underwent radical surgery that enabled the successful removal of the mass, which was near the inferior vena cava. Pathological examination confirmed varicose veins, and the final diagnosis was lumbar vein aneurysm in the retroperitoneum. The patient's postoperative recovery was uneventful, with no symptoms or recurrence observed on 6-month follow-up imaging. We investigated a potential link between pancreatitis and recurrent bleeding due to weakened venous walls. The findings from this case underscore the rarity of venous aneurysms and the diagnostic and treatment challenges due to the limited number of cases; furthermore, they emphasize that surgery should be carefully considered based on the lesion location and associated risks.


Sujet(s)
Anévrysme , Pancréatite , Mâle , Humains , Adulte d'âge moyen , Veine cave inférieure/chirurgie , Vertèbres lombales , Anévrysme/imagerie diagnostique , Anévrysme/chirurgie , Veines
20.
Med Arch ; 78(2): 164-169, 2024.
Article de Anglais | MEDLINE | ID: mdl-38566868

RÉSUMÉ

Background: Inferior vena cava thrombosis (IVC-Th) is a rare clinical entity after blunt abdominal trauma. It has both diagnostic and therapeutic dilemmas. Pulmonary embolism is the most dreadful complication and the leading cause of mortality after IVC-Th. Therefore, accurate prompt diagnosis is crucial. Objective: The aim of this article was to present a case of IVC-Th in a young male patient who had a blunt traumatic abdominal injury after a motor vehicle accident. Case presentation: The patient was brought to emergency department and was successfully managed by angio-jet thrombolysis. He developed a transient contrast nephropathy that was recovered after continuous renal replacement therapy. Several management options have been proposed in the literature, including conservative, endovascular and operative management. Conclusion: Angio-jet is a recent promising technique for managing of venous thrombosis. However, its use in cases of IVC-Th is not extensively discussed in the literature.


Sujet(s)
Embolie pulmonaire , Thrombose veineuse , Plaies non pénétrantes , Humains , Mâle , Embolie pulmonaire/traitement médicamenteux , Traitement thrombolytique , Veine cave inférieure/chirurgie , Thrombose veineuse/traitement médicamenteux , Thrombose veineuse/étiologie , Plaies non pénétrantes/complications
SÉLECTION CITATIONS
DÉTAIL DE RECHERCHE
...