New Combinational Assay Using Soluble Fibrin and D-Dimer Determinations: A Promising Strategy for Identifying Patients with Suspected Venous Thromboembolism

SummaryForty-eight healthy pregnant women were studied prospectively and longitudinally. Blood sampling was performed at 10-15, 23-25, 32-34 and 38-40 weeks of gestation, within one week and at eight weeks postpartum. Classic and modified activated protein C ratio decreased as pregnancy progressed. In the third trimester 92% of the ratios measured with the classic test were above the lower reference level whereas all modified test ratios were normal. Slight activation of blood coagulation was shown with increased levels of prothrombin fragment 1+2, soluble fibrin and D-dimer. Fibrinogen, factor VIII and plasminogen activator inhibitor type 1 and type 2 increased. Protein S and tissue plasminogen activator activity decreased. Protein C remained unchanged. No correlation was found between the decrease in classic APC ratio and changes in factor VIII, fibrinogen, protein S, prothrombin fragment 1+2 or soluble fibrin, nor between the increase in soluble fibrin and changes in prothrombin fragment 1+2, fibrinogen and D-dimer.

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High incidence of postoperative silent venous thromboembolism in ulcerative colitis: a retrospective observational study

BMC Surgery ◽

10.1186/s12893-021-01250-y ◽

2021 ◽

Vol 21 (1) ◽

Author(s):

Norimitsu Shimada ◽

Hiroki Ohge ◽

Hiroki Kitagawa ◽

Kosuke Yoshimura ◽

Norifumi Shigemoto ◽

...

Keyword(s):

Ulcerative Colitis ◽

Venous Thromboembolism ◽

Total Colectomy ◽

Univariate Analysis ◽

Operation Time ◽

High Serum ◽

Total Proctocolectomy ◽

Colon And Rectum ◽

Predictive Risk ◽

D Dimer

Abstract Background The incidence of postoperative venous thromboembolism (VTE) is high in patients with inflammatory bowel disease. We aimed to analyze the incidence and predictive factors of postoperative VTE in patients with ulcerative colitis. Methods Patients with ulcerative colitis who underwent colon and rectum surgery during 2010–2018 were included. We retrospectively investigated the incidence of postoperative VTE. Results A total of 140 colorectal surgery cases were included. Postoperative VTE was detected in 24 (17.1 %). Portal–mesenteric venous thrombosis was the most frequent VTE (18 cases; 75 %); of these, 15 patients underwent total proctocolectomy (TPC) with ileal pouch–anal anastomosis (IPAA). In univariate analysis, VTE occurred more frequently in patients with neoplasia than in those refractory to medications (27.2 % vs. 12.5 %; p < 0.031). TPC with IPAA was more often associated with VTE development (28 %) than total colectomy (10.5 %) or proctectomy (5.9 %). On logistic regression analysis, TPC with IPAA, total colectomy, long operation time (> 4 h), and high serum D-dimer level (> 5.3 µg/mL) on the day following surgery were identified as predictive risk factors. Conclusions Postoperative VTE occurred frequently and asymptomatically, especially after TPC with IPAA. Serum D-dimer level on the day after surgery may be a useful predictor of VTE.

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