BackgroundTransarterial embolization (TAE) is a therapeutic option for patients with a high risk of recurrent bleeding after endoscopic haemostasis. The aim of our prospective study was a preliminary assessment of the safety, efficacy, and clinical outcomes following preventive TAE in patients with non-variceal acute upper gastrointestinal bleeding (NVUGIB) with a high risk of recurrent bleeding after endoscopic haemostasis.MethodsPreventive visceral angiography and TAE were performed after endoscopic haemostasis on patients with NVUGIB who were at a high risk of recurrent bleeding (PE+ group). The comparison group consisted of similar patients who only underwent endoscopic haemostasis, without preventive TAE (PE− group). The technical success of preventive TAE, the completeness of haemostasis, the incidence of rebleeding and the need for surgical intervention and the main outcomes were compared between the groups.ResultsThe PE+ group consisted of 25 patients, and the PE− group of 50 patients, similar in age (median age 66 vs. 63 years), gender and comorbid conditions. The ulcer size at endoscopy was not significantly different (median of 152 mm vs. 127 mm). The most frequent were Forest II type ulcers, 44% in both groups. The distribution of the Forest grade was even. The median haemoglobin on admission was 8, 2 g/dl vs. 8,7 g/dl, p = 0,482, erythrocyte count was 2,7 × 1012/L vs. 2,9 × 1012/L, p = 0,727. The shock index and Rockall scores were similar, as well as and transfusion – on average, four units of packed red blood cells for the majority of patients in both groups, however, significantly more fresh frozen plasma was transfused in the PE− group, p = 0,013. The rebleeding rate was similar, while surgical treatment was needed notably more often in the PE- group, 8% vs. 35% accordingly, p = 0,012. The median ICU stay was 3 days, hospital stay – 6 days vs. 9 days, p = 0.079. The overall mortality reached 20%; in the PE+ group it was 4%, not reaching a statistically significant difference.ConclusionPreventive TAE is a feasible, safe and effective minimally invasive type of haemostasis decreasing the risk of repeated bleeding and preparing the patient for the definitive surgical intervention when indicated.
Background Upper gastrointestinal bleeding (UGIB) due to peptic ulcer disease is one of the leading causes of death in patients with non-variceal bleeding, resulting in up to 10% mortality rate, and the patient group at high risk of rebleeding (Forrest IA, IB, and IIA) often requires additional therapy after endoscopic hemostasis. Preventive transarterial embolization (P-TAE) after endoscopic hemostasis was introduced in our institution in 2014. The aim of the study is an assessment of the intermediate results of P-TAE following primary endoscopic hemostasis in patients with serious comorbid conditions and high risk of rebleeding. Methods During the period from 2014 to 2018, a total of 399 patients referred to our institution with a bleeding peptic ulcer, classified as type Forrest IA, IB, or IIA with the Rockall score ≥ 5, after endoscopic hemostasis was prospectively included in two groups—P-TAE group and control group, where endoscopy alone (EA) was performed. The P-TAE patients underwent flow-reducing left gastric artery or gastroduodenal artery embolization according to the ulcer type. The rebleeding rate, complications, frequency of surgical interventions, transfused packed red blood cells (PRBC), amount of fresh frozen plasma (FFP), and mortality rate were analyzed. Results From 738 patients with a bleeding peptic ulcer, 399 were at high risk for rebleeding after endoscopic hemostasis. From this cohort, 58 patients underwent P-TAE, and 341 were allocated to the EA. A significantly lower rebleeding rate was observed in the P-TAE group, 3.4% vs. 16.2% in the EA group; p = 0.005. The need for surgical intervention reached 10.3% vs. 20.6% in the P-TAE and EA groups accordingly; p = 0.065. Patients that underwent P-TAE required less FFP, 1.3 unit vs. 2.6 units in EA; p = 0.0001. The mortality rate was similar in groups with a tendency to decrease in the P-TAE group, 5.7% vs. 8.5% in EA; p = 0.417. Conclusion P-TAE is a feasible and safe procedure, and it may reduce the rebleeding rate and the need for surgical intervention in patients with a bleeding peptic ulcer when the rebleeding risk remains high after primary endoscopic hemostasis.
The aim of the review is studying the immune response to the new coronavirus disease 2019 (COVID-19) caused by the SARS-CoV-2 virus in different populations, including those with immunosuppression due to concomitant diseases or immunosuppressive therapy.The role of T cells in building up the anti-COVID-19 immunity is of special interest, particularly, when comparing T cell and antibody based immunity. A number of studies are focused on the effectiveness of T-cell immunity against SARS-CoV-2 infection, as well as on the resistance to re-infection. The decreased immunity associated with such illnesses as autoimmune diseases, non-autoimmune inflammations, and the effect of immunosuppressive drugs and obviously, different cancers increase the susceptibility to SARS-CoV-2 and COVID-19 development, and exacerbate the course of the disease.Several studies showed that patients with cancer are at risk of impaired immune response associated with a malignant neoplasm. The inefficient immune response was also shown in cancer patients receiving immunomodulatory therapy. However, some studies registered the specific immunogenicity after vaccination in patients with concomitant immunosuppression.Methotrexate is a folate antimetabolite. The drug can be used both in high doses as an antimetabolite in the antitumor therapy, and in low doses as an immunosuppressive agent in patients with autoimmune diseases. Therefore, the review also discusses a study that evaluated the humoral and cellular immune response to the BNT162b2 (PfizerBioNTech) anti-COVID-19 vaccine in patients receiving methotrexate. The rate of antibody production was lower in patients receiving methotrexate, though the level of T-cell response was similar in all groups studied.The review discussed immune compromised patients with cancer and hematological malignancies and patients living with HIV who had COVID-19. Most studies reported no significant differences of COVID-19 outcomes between major population and the patients with suppressed immune system.Hereby, the cell and humoral immune response in immune compromised patients is possible, however, additional studies are required to confirm these data.
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