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Roberts JC, Escobar MA, Acharya S, Hwang NX, Wang M, Hale S, Brighton S, Kouides PA. Retrospective chart review of GI bleeding in people with von Willebrand disease. Haemophilia 2024; 30:970-980. [PMID: 38751022 DOI: 10.1111/hae.15034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Revised: 02/07/2024] [Accepted: 05/01/2024] [Indexed: 07/18/2024]
Abstract
INTRODUCTION Gastrointestinal (GI) bleeding events (BEs) in von Willebrand disease (VWD) are difficult to diagnose and often recurrent. Limited data from clinical trials has led to lack of consensus on treatment options. AIM Describe current treatments and outcomes for GI BEs in people with VWD. METHODS This retrospective, observational, multicentre chart review study was conducted from January 2018 through December 2019 and included patients with inherited VWD with ≥1 GI BE in the preceding 5 years. Baseline characteristics, number and aetiology of BEs, associated GI-specific morbidities/lesions, treatment and outcomes were analysed descriptively. RESULTS Sixty bleeds were reported in 20 patients with type 1 (20%), type 2 (50%) and type 3 (30%) VWD. During the 5-year study period, 31 (52%) BEs had one identified or suspected cause; multiple causes were reported in 11 (18%). Most GI BEs (72%) were treated with a combination of von Willebrand factor (VWF), antifibrinolytics and/or other haemostatic or non-haemostatic treatments. Time to resolution did not differ by VWF treatment use; however, BEs treated with non-VWF treatments tended to resolve later. In patients with GI-specific morbidities/lesions, 84% resolved with first-line treatment; time to resolution tended to be longer than in patients without such morbidities/lesions. Thirteen BEs occurred in patients receiving prophylaxis and 47 in patients receiving on-demand treatment; 18 BEs resulted in a switch to prophylaxis after bleed resolution. CONCLUSIONS This study confirms the unmet need for the management of recurrent GI BEs in people with VWD and the need for prospective data, especially on prophylaxis.
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Affiliation(s)
- Jonathan C Roberts
- Bleeding & Clotting Disorders Institute, Dills Family Foundation Center for Research at BCDI, Peoria, Illinois, USA
- Departments of Pediatrics and Medicine, University of Illinois College of Medicine at Peoria, Peoria, Illinois, USA
| | - Miguel A Escobar
- University of Texas Health Science Center at Houston, Houston, Texas, USA
| | - Suchitra Acharya
- Northwell Health Hemostasis and Thrombosis Center, Cohen Children's Medical Center, Zucker School of Medicine at Hofstra/Northwell, New Hyde Park, New York, USA
| | - Nina X Hwang
- Center for Inherited Blood Disorders, CHOC Children's Hospital, Orange, California, USA
| | - Michael Wang
- Hemophilia and Thrombosis Center, University of Colorado, Anschutz Medical Campus, Aurora, Colorado, USA
| | - Sarah Hale
- Takeda Pharmaceuticals U.S.A., Inc., Lexington, Massachusetts, USA
| | | | - Peter A Kouides
- Department of Medicine, Mary M. Gooley Hemophilia Center, Rochester, New York, USA
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Phan J, Elgendi K, Javeed M, Aranda JM, Ahmed MM, Vilaro J, Al-Ani M, Parker AM. Thrombotic and Hemorrhagic Complications Following Left Ventricular Assist Device Placement: An Emphasis on Gastrointestinal Bleeding, Stroke, and Pump Thrombosis. Cureus 2023; 15:e51160. [PMID: 38283491 PMCID: PMC10811971 DOI: 10.7759/cureus.51160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Accepted: 12/27/2023] [Indexed: 01/30/2024] Open
Abstract
The left ventricular assist device (LVAD) is a mechanical circulatory support device that supports the heart failure patient as a bridge to transplant (BTT) or as a destination therapy for those who have other medical comorbidities or complications that disqualify them from meeting transplant criteria. In patients with severe heart failure, LVAD use has extended survival and improved signs and symptoms of cardiac congestion and low cardiac output, such as dyspnea, fatigue, and exercise intolerance. However, these devices are associated with specific hematologic and thrombotic complications. In this manuscript, we review the common hematologic complications of LVADs.
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Affiliation(s)
- Joseph Phan
- Internal Medicine, Nova Southeastern University Dr. Kiran C. Patel College of Osteopathic Medicine, Clearwater, USA
| | - Kareem Elgendi
- Internal Medicine, Nova Southeastern University Dr. Kiran C. Patel College of Osteopathic Medicine, Clearwater, USA
| | - Masi Javeed
- Internal Medicine, HCA Healthcare/University of South Florida Morsani College of Medicine, Graduate Medical Education: Bayonet Point Hospital, Hudson, USA
| | - Juan M Aranda
- Department of Medicine, Division of Cardiovascular Medicine, University of Florida College of Medicine, Gainesville, USA
| | - Mustafa M Ahmed
- Department of Medicine, Division of Cardiovascular Medicine, University of Florida College of Medicine, Gainesville, USA
| | - Juan Vilaro
- Department of Medicine, Division of Cardiovascular Medicine, University of Florida College of Medicine, Gainesville, USA
| | - Mohammad Al-Ani
- Department of Medicine, Division of Cardiovascular Medicine, University of Florida College of Medicine, Gainesville, USA
| | - Alex M Parker
- Department of Medicine, Division of Cardiovascular Medicine, University of Florida College of Medicine, Gainesville, USA
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Del Rio-Pertuz G, Nair N. Gastrointestinal bleeding in patients with continuous-flow left ventricular assist devices: A comprehensive review. Artif Organs 2023; 47:12-23. [PMID: 36334280 DOI: 10.1111/aor.14432] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 09/05/2022] [Accepted: 10/04/2022] [Indexed: 11/07/2022]
Abstract
BACKGROUND Gastrointestinal bleeding is a major cause of morbidity that plagues the quality of life of patients supported on contemporary continuous-flow left ventricular assist devices (CF-LVADs). Despite benefits in survival and the nearly 50% reduction in complications provided by CF-LVADs, bleeding remains one of the most frequent adverse events with CF-LVAD implants. The CF-LVADs cause an increased risk of bleeding mainly due to the activation of the coagulation cascade. METHODS A literature search was done using PubMed and Google Scholar from Inception to February 2022. Qualitative analyses of the articles retrieved were used to construct this review. This review attempts to provide a comprehensive summary of the epidemiology, pathophysiology, risk stratification, and management of gastrointestinal bleeding as a complication of CF-LVAD as well as propose an algorithm for diagnosis and treatment. RESULTS Bleeding can occur at different sites in the gastrointestinal tract, the most common underlying pathology being arteriovenous malformations located in the upper gastrointestinal tract The increased prevalence of gastrointestinal (GI) bleeding in CF-LVAD patients has been attributed to the physiology of the LVAD itself, the use of anticoagulants, as well as patient comorbidities. Management involves pharmacologic and nonpharmacologic strategies. CONCLUSIONS CF-LVAD-supported patients have a significant risk of GI bleeding that is mainly caused by arteriovenous malformations located in the upper GI tract. The increased prevalence of GI bleeding in CF-LVAD patients is attributed to several etiologies that include factors attributed to the device itself and extrinsic factors such as the use of anticoagulation.
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Affiliation(s)
- Gaspar Del Rio-Pertuz
- Department of Internal Medicine, Texas Tech University Health Sciences Center, Lubbock, Texas, USA
| | - Nandini Nair
- Division of Cardiology, Texas Tech University Health Sciences Center, Lubbock, Texas, USA
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Samii A, Norouzi M, Ahmadi A, Dorgalaleh A. Gastrointestinal Bleeding in Congenital Bleeding Disorders. Semin Thromb Hemost 2022; 48:529-541. [PMID: 35021252 DOI: 10.1055/s-0041-1741571] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Gastrointestinal bleeding (GIB) is serious, intractable, and potentially life-threatening condition. There is considerable heterogeneity in GIB phenotypes among congenital bleeding disorders (CBDs), making GIB difficult to manage. Although GIB is rarely encountered in CBDs, its severity in some patients makes the need for a comprehensive and precise assessment of underlying factors and management approaches imperative. Initial evaluation of GIB begins with assessment of hematological status; GIB should be ruled out in patients with chronic anemia, and in presentations that include hematemesis, hematochezia, or melena. High-risk patients with recurrent GIB require urgent interventions such as replacement therapy for treatment of coagulation factor deficiency (CFD). However, the best management strategy for CFD-related bleeding remains controversial. While several investigations have identified CBDs as potential risk factors for GIB, research has focused on assessing the risks for individual factor deficiencies and other CBDs. This review highlights recent findings on the prevalence, management strategies, and alternative therapies of GIB related to CFDs, and platelet disorders.
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Affiliation(s)
- Amir Samii
- Department of Hematology and Blood Transfusion, School of Allied Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Mahshaad Norouzi
- Blood Transfusion Research Center, High Institute for Research and Education in Transfusion Medicine, Tehran, Iran
| | - Abbas Ahmadi
- Cellular and Molecular Research Center, Research Institute for Health Development, Kurdistan University of Medical Sciences, Sanandaj, Iran
| | - Akbar Dorgalaleh
- Department of Hematology and Blood Transfusion, School of Allied Medicine, Iran University of Medical Sciences, Tehran, Iran
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Chornenki NLJ, Shanjer M, James PD. Vascular abnormalities in patients with von Willebrand disease: A scoping review. J Thromb Haemost 2021; 19:2151-2160. [PMID: 34060212 DOI: 10.1111/jth.15410] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Accepted: 05/07/2021] [Indexed: 01/19/2023]
Abstract
BACKGROUND Qualitative or quantitative defects of von Willebrand factor (VWF) such as in von Willebrand disease (VWD) are associated with vascular abnormalities, especially in the gastrointestinal (GI) tract. However, the locations, extent, and natural history of vascular abnormalities in patients with VWD is not well understood. To summarize the existing literature on the topic, we conducted a scoping review of vascular abnormalities in patients with VWD. METHODS We searched MEDLINE and EMBASE from inception to September 1, 2020, for studies clinically describing vascular abnormalities in VWD patients. Screening and data extraction was completed independently and in duplicate and each abnormality was documented individually. RESULTS After screening, 54 studies that reported patient level data comprising 146 patients were included. Type 2A (39%) and type 3 (14.4%) were the most common VWD subtypes. The most common site of vascular malformation was the GI tract, occurring in 124 patients (84.9%), whereas 18 (12.3%) had non-GI vascular abnormalities and 4 (2.7%) had both GI and non-GI vascular abnormalities. With respect to outcomes, the clinical course was not specified in the majority (55.5%) of patients. Survey and population level data were reported in nine studies, demonstrating vascular abnormalities occurred at higher rates in VWD and that VWD patients are overrepresented among those with those abnormalities. CONCLUSION Vascular malformations in patients with VWD occur primarily in the gastrointestinal tract. Type 2A and type 3 VWD are the most common subtypes affected. The clinical treatment and natural history of these abnormalities remains understudied and further research is needed.
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Affiliation(s)
| | - Maaz Shanjer
- Michael G. DeGroote School of Medicine, McMaster University, Hamilton, ON, Canada
| | - Paula D James
- Department of Medicine, Queen's University, Kingston, ON, Canada
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How I treat gastrointestinal bleeding in congenital and acquired von Willebrand disease. Blood 2021; 136:1125-1133. [PMID: 32584960 DOI: 10.1182/blood.2019003702] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2020] [Accepted: 05/01/2020] [Indexed: 12/15/2022] Open
Abstract
Gastrointestinal (GI) bleeding is distinctive of severe von Willebrand disease (VWD), generally arising in older patients; in most cases, blood transfusion and hospitalization are required. The presence of arteriovenous malformations is often described when endoscopic examinations are performed. Patients with congenital type 3, 2A, and 2B are those most frequently affected by this symptom, possibly due to the loss of high-molecular-weight multimers of von Willebrand factor (VWF). GI bleeding can also occur in patients affected by acquired von Willebrand syndrome. Endoscopic examination of the GI tract is necessary to exclude ulcers and polyps or cancer as possible causes of GI bleeding. In congenital VWD, prophylaxis with VWF/factor VIII concentrates is generally started after GI-bleeding events, but this therapy is not always successful. Iron supplementation must be prescribed to avoid chronic iron deficiency. Possible rescue therapies (high-dose statins, octreotide, thalidomide, lenalidomide, and tamoxifen) were described in a few case reports and series; however, surgery may be necessary in emergency situations or if medical treatment fails to stop bleeding. In this article, we present several clinical cases that highlight the clinical challenges of these patients and possible strategies for their long-term management.
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Bartoli CR, Zhang DM, Hennessy-Strahs S, Kang J, Restle DJ, Bermudez C, Atluri P, Acker MA. Clinical and In Vitro Evidence That Left Ventricular Assist Device-Induced von Willebrand Factor Degradation Alters Angiogenesis. Circ Heart Fail 2019; 11:e004638. [PMID: 30354363 DOI: 10.1161/circheartfailure.117.004638] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Background Gastrointestinal bleeding from angiodysplasia is a major problem in continuous-flow left ventricular assist device (LVAD) patients. LVAD shear stress causes pathologic degradation of VWF (von Willebrand factor). A mechanistic relationship between VWF degradation and angiodysplasia has not been explored. We tested 2 novel hypotheses: (1) clinical hypothesis: VWF fragments are elevated in LVAD patients that develop angiodysplasia and (2) in vitro hypothesis: VWF fragments generated during LVAD support alter angiogenesis, which may contribute to angiodysplasia. Methods and Results Clinical study: Paired blood samples were collected from continuous-flow LVAD patients (n=35). VWF was quantified with immunoblotting. In vitro experiments: (1) To investigate whether LVAD support alters angiogenesis, human endothelial cells were cultured with LVAD patient plasma (n=11). To investigate mechanism, endothelial cells were cultured with VWF fragments produced by exposing human VWF and ADAMTS-13 (VWF protease) to LVAD-like shear stress (175 dyne/cm2, n=8). Clinical study results: in all patients (n=35, mean support 666±430 days), LVAD support degraded high-molecular-weight VWF multimers ( P<0.0001) into low-molecular-weight VWF multimers ( P<0.0001) and VWF fragments ( P<0.0001). In patients with gastrointestinal bleeding from angiodysplasia (n=7), VWF fragments were elevated ( P=0.02) versus nonbleeders. In contrast, in patients with gastrointestinal bleeding without angiodysplasia, VWF fragments were not elevated versus nonbleeders ( P=0.96). In vitro experiments results: LVAD patient plasma caused abnormal angiogenesis with reduced tubule length ( P=0.04) and migration ( P=0.05). Similarly, endothelial cells grown with VWF degradation fragments exhibited reduced tubule length ( P<0.001) and migration ( P=0.01). Conclusions LVAD patients who bled from angiodysplasia had higher levels of VWF fragments than nonbleeders and gastrointestinal bleeders without angiodysplasia. VWF fragments caused abnormal angiogenesis in vitro. These findings suggest that VWF fragments may be a mechanistic link between LVAD support, abnormal angiogenesis, angiodysplasia, and gastrointestinal bleeding.
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Affiliation(s)
- Carlo R Bartoli
- Division of Cardiovascular Surgery, Hospital of the University of Pennsylvania, Philadelphia (C.R.B., S.H.-S., C.B., P.A., M.A.A.)
| | - David M Zhang
- Washington University, School of Medicine, St Louis, MO (D.M.Z.)
| | - Samson Hennessy-Strahs
- Division of Cardiovascular Surgery, Hospital of the University of Pennsylvania, Philadelphia (C.R.B., S.H.-S., C.B., P.A., M.A.A.)
| | - Jooeun Kang
- Vanderbilt University School of Medicine, Nashville, TN (J.K.)
| | | | - Christian Bermudez
- Division of Cardiovascular Surgery, Hospital of the University of Pennsylvania, Philadelphia (C.R.B., S.H.-S., C.B., P.A., M.A.A.)
| | - Pavan Atluri
- Division of Cardiovascular Surgery, Hospital of the University of Pennsylvania, Philadelphia (C.R.B., S.H.-S., C.B., P.A., M.A.A.)
| | - Michael A Acker
- Division of Cardiovascular Surgery, Hospital of the University of Pennsylvania, Philadelphia (C.R.B., S.H.-S., C.B., P.A., M.A.A.)
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Kim JH, Brophy DF, Shah KB. Continuous-Flow Left Ventricular Assist Device–Related Gastrointestinal Bleeding. Cardiol Clin 2018; 36:519-529. [DOI: 10.1016/j.ccl.2018.06.006] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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9
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Danazol treatment of gastrointestinal bleeding in left ventricular assist device–supported patients. J Heart Lung Transplant 2018; 37:1035-1037. [DOI: 10.1016/j.healun.2018.04.013] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2017] [Revised: 02/20/2018] [Accepted: 04/18/2018] [Indexed: 11/23/2022] Open
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10
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Sieg AC, Moretz JD, Horn E, Jennings DL. Pharmacotherapeutic Management of Gastrointestinal Bleeding in Patients with Continuous-Flow Left Ventricular Assist Devices. Pharmacotherapy 2017; 37:1432-1448. [DOI: 10.1002/phar.2016] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Adam C. Sieg
- Department of Pharmacy; University of Kentucky; Lexington Kentucky
| | - Jeremy D. Moretz
- Department of Pharmacy; Vanderbilt University Medical Center; Nashville Tennessee
| | - Edward Horn
- Department of Pharmacy; Allegheny General Hospital; Pittsburgh Pennsylvania
| | - Douglas L. Jennings
- Department of Pharmacy; New York-Presbyterian Hospital - Columbia University Medical Center; New York New York
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Heijdra JM, Cnossen MH, Leebeek FWG. Current and Emerging Options for the Management of Inherited von Willebrand Disease. Drugs 2017; 77:1531-1547. [PMID: 28791655 PMCID: PMC5585291 DOI: 10.1007/s40265-017-0793-2] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Von Willebrand disease (VWD) is the most common inherited bleeding disorder with an estimated prevalence of ~1% and clinically relevant bleeding symptoms in approximately 1:10,000 individuals. VWD is caused by a deficiency and/or defect of von Willebrand factor (VWF). The most common symptoms are mucocutaneous bleeding, hematomas, and bleeding after trauma or surgery. For decades, treatment to prevent or treat bleeding has consisted of desmopressin in milder cases and of replacement therapy with plasma-derived concentrates containing VWF and Factor VIII (FVIII) in more severe cases. Both are usually combined with supportive therapy, e.g. antifibrinolytic agents, and maximal hemostatic measures. Several developments such as the first recombinant VWF concentrate, which has been recently licensed for VWD, will make a more "personalized" approach to VWD management possible. As research on new treatment strategies for established therapies, such as population pharmacokinetic-guided dosing of clotting factor concentrates, and novel treatment modalities such as aptamers and gene therapy are ongoing, it is likely that the horizon to tailor therapy to the individual patients' needs will be extended, thus, further improving the already high standard of care in VWD in most high-resource countries.
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Affiliation(s)
- Jessica M Heijdra
- Department of Pediatric Hematology, Erasmus University Medical Center - Sophia Children's Hospital, Wytemaweg 80, 3015 CN, Rotterdam, The Netherlands
| | - Marjon H Cnossen
- Department of Pediatric Hematology, Erasmus University Medical Center - Sophia Children's Hospital, Wytemaweg 80, 3015 CN, Rotterdam, The Netherlands
| | - Frank W G Leebeek
- Department of Hematology, Erasmus University Medical Center, Rotterdam, 's-Gravendijkwal 230, 3015 CE, Rotterdam, The Netherlands.
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Rugeri L, Ashrani AA, Nichols WL, Trousdale RT, Pruthi RK. A single-centre study of haemostatic outcomes of joint replacement in von Willebrand disease and control patients and an analysis of the literature. Haemophilia 2016; 22:934-942. [PMID: 27385645 DOI: 10.1111/hae.13027] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/25/2016] [Indexed: 12/11/2022]
Abstract
INTRODUCTION Haemostatic assessments of patients with von Willebrand disease (VWD) who undergo total knee arthroplasty (TKA) and total hip arthroplasty (THA) have mainly relied on subjective parameters. AIMS To compare objective haemostatic outcomes of TKA/THA in VWD patients and controls without bleeding disorders. METHODS We retrospectively analysed haemostatic outcomes in VWD patients undergoing TKA/THA from 1993 to 2011 and compared them with two matched controls per operation. Using one-way analysis of variance, we tested the effect of VWD on bleeding risk after TKA and THA. RESULTS Twelve VWD patients (6 type 1, 3 type 2M, 1 each of types 2A/2B/3) undergoing 19 operations (12 TKA, 7 THA) were matched to 38 controls. One (5%) of 19 operations in VWD patients and none of the control operations met clinical criteria for major bleeding. Baseline and postoperative day 1 haemoglobin levels, postoperative blood loss, transfused red blood cells (RBCs) and mean hospitalization days were not significantly different. More VWD patients than controls received RBC transfusions [12 (63%) vs. 12 (32%)]. Only 9 (47%) VWD patients vs. 38 (100%) controls received pharmacologic VTE prophylaxis. No postoperative symptomatic VTE occurred in either group. CONCLUSION In this largest, single-institutional study, von Willebrand factor replacement based on daily levels resulted in low frequency of major bleeding in VWD patients after TKA/THA. RBC transfusion was more frequent compared with matched controls, but other objective measures of haemostasis were similar. Lack of sufficient details in published reports precluded comparison of haemostatic outcomes.
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Affiliation(s)
- L Rugeri
- Divisions of Hematology and Hematopathology, Mayo Clinic, Rochester, MN, USA
| | - A A Ashrani
- Divisions of Hematology and Hematopathology, Mayo Clinic, Rochester, MN, USA
| | - W L Nichols
- Divisions of Hematology and Hematopathology, Mayo Clinic, Rochester, MN, USA
| | - R T Trousdale
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, MN, USA
| | - R K Pruthi
- Divisions of Hematology and Hematopathology, Mayo Clinic, Rochester, MN, USA
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Gastrointestinal Bleeding Following LVAD Placement from Top to Bottom. Dig Dis Sci 2016; 61:1440-7. [PMID: 27017225 PMCID: PMC4875872 DOI: 10.1007/s10620-016-4123-4] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/11/2015] [Accepted: 03/06/2016] [Indexed: 02/06/2023]
Abstract
BACKGROUND Left ventricular assist devices (LVADs) are an increasingly prevalent form of mechanical support for patients with end-stage heart failure. These devices can be implanted both as a bridge to transplant and as definitive/destination therapy. Gastrointestinal (GI) bleeding is one of the most common and recalcitrant long-term complications following LVAD implantation, with an incidence approaching 30 %. AIMS This review will discuss what is known about the pathophysiology of GI bleeding in LVADs and the currently available options for medical and/or endoscopic management. RESULTS The pathophysiology of bleeding is multifactorial, with hemodynamic alterations, acquired von Willebrand factor deficiency, and coagulopathy being most often implicated. The majority of bleeding events in this population result from angioectasias and gastroduodenal erosive disease. While these bleeding events are significant and often require transfusion therapy, they are rarely life threatening. Endoscopy remains the standard of care with upper endoscopy offering the highest diagnostic yield in these patients. However, the effectiveness of endoscopic hemostasis in this population is not well established. A small number of studies have evaluated medical therapy and alterations in LVAD settings as a means of preventing or treating bleeding with variable results. CONCLUSIONS In summary, GI bleeding with LVADs is a common occurrence and will continue to be as more LVADs are being performed for destination therapy.
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Continuous-flow left ventricular assist devices and gastrointestinal bleeding: potential role of danazol. J Heart Lung Transplant 2014; 33:549-50. [PMID: 24630863 DOI: 10.1016/j.healun.2014.01.922] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2013] [Revised: 01/23/2014] [Accepted: 01/30/2014] [Indexed: 11/20/2022] Open
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