Please select the eligibility criteria that correspond to the clinical trial below.
Title: Open Label, Non-Randomized, Study to Evaluate the Pharmacokinetics of Tranexamic Acid in Patients Undergoing Major Liver Resection
Brief Summary: Tranexamic acid (TXA) is an antifibrinolytic agent that has been shown to reduce blood loss and blood transfusion requirements in the following patient populations: multisystem trauma, liver transplantation, cardiac surgery and spine surgery. Patients undergoing major liver resection are at risk of severe perioperative blood loss and may also benefit from perioperative TXA administration.

This open label, non-randomized study to evaluate the pharmacokinetic and pharmacodynamic properties of two well studied dosing regimens of TXA will provide guidance in determining the optimal TXA dosing regimen for patients undergoing major liver resection. Compelling evidence of the effectiveness of TXA comes from the large multicentred, multi-national CRASH-2 trial where TXA was administered as a 1 g bolus + 1 g infusion over 8 hours. In liver transplant surgery, the following dose regimen has been shown to have great effect:10 mg/kg/h from the start of surgery until 2 hours after reperfusion of the liver transplant.

Although TXA is not currently approved for use in patients undergoing major liver resection, Health Canada has allowed the use of tranexamic acid for use in this research study.


Options:
A: Inclusion Criteria:

* Subjects \> 18 years of age, requiring elective or urgent, open hepatic surgery
* Presence of an appropriate bleeding hepatic parenchymal Target Bleeding Site (TBS) as identified intra-operatively by the surgeon
* Subjects must be willing to participate in the study, and provide written informed consent

Exclusion Criteria:

* Subjects with any intra-operative findings identified by the surgeon that may preclude conduct of the study procedure
* TBS is from large defects in arteries or veins where the injured vascular wall requires repair with maintenance of vessel patency and which would result in persistent exposure of the FP to blood flow and pressure during healing and absorption of the product
* TBS with major arterial bleeding requiring suture or mechanical ligation
* Subjects admitted for trauma surgery
* Subject is a transplant patient for fulminant hepatic failure
* Subject with TBS within an actively infected field
* Bleeding site is in, around, or in proximity to foramina in bone, or areas of bony confine
* Subjects with known intolerance to blood products or to one of the components of the study product or is unwilling to receive blood products
* Subjects who are known, current alcohol and / or drug abusers
* Subjects who have participated in another investigational drug or device research study within 30 days of surgery
* Female subjects who are pregnant or nursing
B: Inclusion Criteria

* Patient undergoing anticipated open or laparoscopic major liver resection (\> 2 hepatic segments), as assessed by the operating surgeon
* Age ≥ 18 years.

Exclusion Criteria

* Previously enrolled in this study
* Platelet count less than 100,000/mm3
* Severe anemia (hemoglobin levels less than 90 g/l)
* Documented arterial or venous thrombosis at screening or in past three months
* Anticoagulants (other than LMWH or heparin in prophylactic doses to prevent deep vein thrombosis), direct thrombin inhibitors or thrombolytic therapy administered or completed within last week
* Hepatectomy associated with planned vascular or biliary reconstruction
* Known disseminated intravascular coagulation
* Severe renal insufficiency (CrCl\<30)
* History of seizure disorder
* Pregnant or lactating
* Hypersensitivity to tranexamic acid or any of the ingredients
* Unable to receive blood products (i.e. difficulty with cross matching, refuses blood transfusion, or a past history of unexplained severe transfusion reaction)
* Receipt of chemotherapy within 4 weeks of scheduled operation
* Patients undergoing resection for living donor liver transplant.
C: Inclusion Criteria:

1. Has signed an institutional review board/independent ethics committee (IRB/IEC)-approved informed consent document
2. Is undergoing one of the 4 surgical procedures described
3. Is at least 18 years old at time of consent
4. If female and of child-bearing potential, has negative pregnancy test during screening and is not breast-feeding
5. If able to reproduce, agrees to use a medically accepted form of contraception from the time of consent to completion of all follow-up study visits when engaging in heterosexual intercourse
6. Has not received blood transfusion between screening and study treatment
7. Has mild to moderate surgical bleeding
8. Does not have intra-operative complications
9. Has not used a topical hemostat containing thrombin prior to study treatment
10. Has an approximate bleeding site surface area of less than or equal to 100 cm\^2

Exclusion Criteria:

1. Has known antibodies or hypersensitivity to thrombin or other coagulation factors
2. Has history of heparin-induced thrombocytopenia (only for vascular subjects where heparin use is required)
3. Has known allergy to gelatin sponge
4. Is unwilling to receive blood products
5. Has liver enzymes appropriate for the study, considering their disease
6. Has appropriate level of platelets per liter (PLT/L) during screening
7. Has any clinically-significant coagulation disorder that may interfere with the assessment of efficacy or pose a safety risk to the subject according to the Investigator, or baseline abnormalities during screening that are not explained by current drug treatment (e.g., warfarin, heparin)
D: Inclusion Criteria:

* Subjects ≥ 18 years of age, requiring elective or urgent, open hepatic surgery.
* Presence of an appropriate bleeding hepatic parenchymal Target Bleeding Site (TBS) as identified intra-operatively by the surgeon
* Subjects or legally authorized representatives must be willing to participate in the study, and provide written informed consent. (Note: This criteria does allow for hospital translators to be used where approved by Ethics Committees/Institutional Review Boards)

Exclusion Criteria:

* Subjects with any intra-operative findings identified by the surgeon that may preclude conduct of the study procedure;
* TBS is from large defects in arteries or veins where the injured vascular wall requires repair with maintenance of vessel patency and which would result in persistent exposure of EVARREST® to blood flow and pressure during healing and absorption of the product;
* TBS with major arterial bleeding requiring suture or mechanical ligation;
* Subjects admitted for trauma surgery;
* Subject is a transplant patient for fulminant hepatic failure
* Subject with TBS within an actively infected field;
* Bleeding site is in, around, or in proximity to foramina in bone, or areas of bony confine;
* Subjects with known intolerance to blood products or to one of the components of the study product or is unwilling to receive blood products;
* Subjects who are known, current alcohol and / or drug abusers;
* Subjects who have participated in another investigational medical device or investigational drug trial within 30 days of surgery or are expected to participate in another medical device or investigational drug trial during the course of the study;
* Female subjects who are pregnant or nursing.

Answer: B