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Balcioglu, Ozlem; Kemal, Hatice S; Ertugay, Serkan; Ozturk, Pelin; Engin, Yaprak; Nalbantgil, Sanem; Engin, Cagatay; Yagdi, Tahir; Ozbaran, Mustafa
ASAIO journal (1992), 2018-July/August, Volume: 64, Issue: 4Journal Article
This study aimed to compare von Willebrand factor (vWF) levels, ristocetin cofactor levels, platelet counts, aortic valve movements, and right heart failure (RHF) as risk factors of gastrointestinal (GI) bleeding in patients with continuous flow left ventricular assist device (cf-LVAD). In a single centre, 90 patients (mean age 52.0 ± 10.5 years), of which 59 were male and 31 were female, had cf-LVAD implantation from October 2010 to November 2012. Seventy-six (84.4%) patients had HeartWare (Medtronic, Mounds View, MN) and 14 (15.5%) had Heartmate II (Thoratec, Pleasanton, CA) implanted. vWF level, ristocetin cofactor level, and platelet count were measured before and after implantation to determine the presence of acquired von Willebrand Syndrome; aortic valve movement and postoperative RHF were evaluated to compare the difference in bleeding and nonbleeding patient groups. Fifteen patients (16.6%) suffered GI bleeding after cf-LVAD implantation. A statistically significant decrease was found in vWF and ristocetin cofactor levels from preoperative period to postoperative period in both bleeding and nonbleeding patient groups (p < 0.05). There was no significant difference in bleeding and nonbleeding groups regarding aortic valve movements (p ≥ 0.05). Postoperative RHF incidence was significantly high in the bleeding patient group compared with the nonbleeding group (p < 0.05). Therefore, depending on the findings of this study, acquired von Willebrand Syndrome was seen in all cf-LVAD patients, and postoperative RHF was an important risk factor for GI bleeding.
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