Portal vein thrombosis in patients with hepatosplenic schistosomiasis who underwent oesophagogastric devascularization combined with splenectomy.

BACKGROUND: Portal vein thrombosis (PVT) has been described in nearly 50% of patients who underwent oesophagogastric devascularization combined with splenectomy (EGDS), but no previous study has compared its occurrence in surgical and non-surgical groups. This study aimed to investigate PVT in hepatosplenic schistosomiasis (HSS) and its association with EGDS and upper variceal bleeding (UVB). METHODS: Retrospectively, 104 HSS individuals were enrolled. Following EGDS, the occurrence of PVT, mesenteric vein thrombosis (MVT), hospital admissions and UVB were recorded. RESULTS: EGDS was performed in 27 (26%) patients. PVT and MVT were detected in 30 (33%) and 8 (9.8%) patients, respectively. Patients who underwent EGDS were at greater risk of PVT (63% vs 19.7%; odds ratio [OR] 6.12 [95% confidence interval {CI} 2.3 to 16.1], p<0.001) when compared with a non-surgical approach. There was no significant difference in UVB occurrence and ß-blocker usage. PVT was associated with more hospital admissions (p=0.030) and higher alkaline phosphatase levels (p=0.008). UVB occurrence in patients with and without thrombosis was similar. In multivariate analysis, after adjustment, PVT was associated with the surgical approach (OR 4.56 [95% CI 1.55 to 13.38], p=0.006) and age at HSS diagnosis (OR 0.94 [95% CI 0.90 to 0.99], p=0.021). CONCLUSIONS: EGDS was not associated with a decreased frequency of UVB when compared with the non-surgical approach but was an independent risk factor for PVT.

Baveno VI and Expanded Baveno VI criteria successfully predicts the absence of high-risk gastro-oesophageal varices in a Chilean cohort.

BACKGROUND: Baveno VI and expanded Baveno VI criteria have been recommended to circumvent the need for endoscopy screening in patients with a very low probability of varices needing treatment (VNT). AIM: To validate these criteria in a Latin American population. METHODS: The ability of Baveno VI criteria (liver stiffness measurement (LSM) <20 kPa and platelet count >150 × 103/µL) and expanded Baveno VI criteria (LSM < 25kPa and platelet count >110 × 103/µL) to exclude the presence of VNT was tested in a prospectively recruited cohort of patients with Child-Pugh A liver cirrhosis and with no previous variceal haemorrhage who attended the liver clinics of three major hospitals in Chile. RESULTS: Three hundred patients were included. The median (IQR) age was 61 [18-86] years, median MELD was 8.0 (6-17), median LSM was 17.2 (10.2-77) kPa and median platelet count was 137 (23-464) × 103 /µL. The main aetiology was non-alcoholic fatty liver disease (67.3%). VNT were present in 18% of patients. The Baveno VI criteria had a sensitivity of 98.1% and a specificity of 38.2%, potentially sparing 31.3% of upper endoscopies with a very low risk of missing VNT (1.1%). The expanded Baveno VI criteria had a sensitivity of 90.7% and a specificity of 61%, potentially sparing 51.3% of upper endoscopies with a risk of missing VNT of 3.6%. Both criteria were independently associated with the absence of VNT. CONCLUSION: We validated the Baveno VI and expanded Baveno VI criteria in Chilean population, potentially sparing 31.3% and 51.3% of endoscopies, respectively, with a very low risk of missing VNT. Fondecyt 1191183.

Low Fibrinogen Levels Are Associated with Bleeding After Varices Ligation in Thrombocytopenic Cirrhotic Patients.

INTRODUCTION AND AIM: EVBL is a procedure frequently performed in cirrhotic patients for primary prophylaxis of bleeding. Patients with cirrhosis display various degrees of alteration of common coagulation parameters, and it is not known whether these alterations may predict post-EVBL bleeding. To evaluate factors predictive of post-endoscopic variceal band ligation (EVBL) bleeding in cirrhotic patients with thrombocytopenia. METHODS: We included 109 patients with cirrhosis undergoing EVBL for primary prophylaxis of variceal bleeding. Common coagulation parameters (INR, fibrinogen levels) and complete haemogram were obtained in all patients and evaluated subdividing patients in bleeders and non bleeders following EVBL. RESULTS: The incidence of post-EVBL bleeding was 5.5% (6 patients). INR and platelet counts, considered as continuous or dichotomous variables according to common cut-offs (i.e., INR>1.5, platelet count <50x109/L) were not predictors of post-EVBL bleeding. Patients who bled had significantly lower fibrinogen levels [146 mg/dL (98 - 262) versus 230 mg/dL (104 - 638), P=0.009], and no other biochemical or clinical predictors of bleeding were identified. A fibrinogen cut-off of 179 mg/dL had 98.6% negative predictive value for bleeding. CONCLUSION: low fibrinogen levels are associated with an increased risk of bleeding following prophylactic EVBL in cirrhotic patients, and might be used to stratify patients' risk. However, due to their preliminary nature, these findings need to be confirmed in larger populations.

Reliability and safety of transnasal compared to conventional endoscopy for detecting oesophageal varices in cirrhotic patients.

BACKGROUND & AIMS: Unsedated transnasal endoscopy may be used for detecting oesophageal varices. However, few studies evaluated feasibility and accuracy of this technique. We aimed to evaluate accuracy, interobserver agreement and safety of the transnasal ultrathin compared to conventional endoscopy in patients with cirrhosis. METHODS: This cross-sectional study included consecutive patients referred for screening or surveillance of oesophageal varices. Patients underwent unsedated transnasal and sedated conventional endoscopies at the same day, which were recorded in a digital video file and randomly analysed by two double-blinded endoscopists. High-risk varices were defined by the presence of large calibre or red wale marks. Accuracy, interobserver agreement and safety of transnasal were compared to conventional endoscopy. RESULTS: One hundred and thirty-three cirrhotic patients (48% male, aged of 60 ± 5, 34% Child-Pugh B/C and 71% of cases for variceal screening) were included in the study. The prevalence of oesophageal varices and high-risk oesophageal varices were 59% (n = 79) and 29% (n = 39) respectively. For the presence of oesophageal varices, transnasal GIE yielded sensitivity of 94% [95% Confidence Interval, CI 88-99], specificity of 89% [81-97] as well as positive and negative predictive value of 93% and 91% respectively. A satisfactory interobserver agreement was observed for the presence of oesophageal varices (κ = 0.89) and high-risk varices (κ = 0.65). No serious adverse events were recorded; transnasal GIE was safe and significantly associated with lower rates of hypoxaemia (P < .0001) and hypotension (P < .0001) compared to conventional endoscopy. CONCLUSIONS: Unsedated transnasal endoscopy was safe and had an excellent accuracy and high interobserver agreement for detecting oesophageal varices and for identifying high-risk varices in cirrhotic patients.

Cociente conteo de plaquetas/diámetro bipolar del bazo menor que 909 para predecir várices esofágicas / Platelet count/spleen bipolar diameter ratio below 909 to predict oesophageal varices

Introducción: el cociente conteo de plaquetas/diámetro bipolar del bazo menor que 909 ha sido considerado un buen indicador de la presencia de várices esofágicas. Objetivo: realizar la validación externa del valor del mencionado cociente para el diagnóstico de várices esofágicas. Métodos: estudio de evaluación de pruebas diagnósticas, que incluyó 102 pacientes cirróticos por distintas causas, con predominio de masculinos (55/102; 53,9 %), edad promedio de 55,76 ± 12,6 años. Se efectuaron determinaciones de las variables de laboratorio, ecografía abdominal y endoscopia alta como prueba de referencia. Se realizaron cálculo de sensibilidad, especificidad, valores predictivos y razones de verosimilitud para determinar exactitud diagnóstica para várices esofágicas del cociente. Resultados: el 65,7 % de los casos (n= 67) tenía várices esofágicas. El cociente mostró sensibilidad del 96,30 % (IC 95 %: 87,32-100,00) con un valor predictivo negativo del 97,1 % (IC 95 %: 90,19-100,00). Se confirmó la alta exactitud diagnóstica mediante el análisis por curva COR (siglas en inglés ROC, Receiver Operator Characteristics) (c= 0,927; IC 95 %: 0,873-0,980). Conclusiones: en esta serie fue posible reproducir los resultados que consideran el referido cociente como método de valor para identificar la presencia de várices esofágicas en pacientes cirróticos.

Introduction: a platelet count/spleen bipolar diameter ratio below 909 is considered to be a good indicator of the presence of oesophageal varices. Objective: carry out an external validation of the value of this ratio to diagnose oesophageal varices. Methods: evaluation study of diagnostic tests of 102 cirrhotic patients of various causes, with a predominance of the male sex (55/102; 53.9 %) and a mean age of 55.76 ± 12.6. Determinations were based on laboratory variables, abdominal echography and upper endoscopy as a reference test. Sensitivity, specificity, predictive values and likelihood ratios were estimated to determine the accuracy of the ratio for the diagnosis of oesophageal varices. Results: 65.7 % of the cases (n= 67) had oesophageal varices. The ratio showed a sensitivity of 96.30 % (CI 95 %: 87.32-100.00) with a negative predictive value of 97.1 % (CI 95 %: 90.19-100.00). Diagnostic accuracy was confirmed with ROC curve analysis (c= 0.927; CI 95 %: 0.873-0.980). Conclusions: in the series it was possible to reproduce the results that consider the ratio under study to be a valuable method to identify the presence of oesophageal varices in cirrhotic patients.