Hemostasis Essay

The liver becomes so diseased and damaged that it can no longer produce appropriate amounts of clotting factor and hormones to make platelets. “Vitamin K must be present in order for the liver to synthesize some of the clotting factors, including prothrombin, interleukin-6, multi-CSF, and fibrinogen.” p 664 If the blood is unable to clot then the patient will continue to bleed to the point that a liver transplant is necessary. Prothrombin a peptide hormone produced in the kidneys that accelerates platelet formation. Interleukin-6 is a hormone that stimulates platelet formation. Multi-CSF is a hormone that stimulates platelet production by promoting the formation and growth of megakaryocytes. p.660 If all of these hormones are

A person with a normal platelet count has between 150,000 to 450,000 per each microliter of blood in the body. With Thrombocytopenia, patients have platelet counts that are less than 150,000 per microliter of blood. Platelets help to promote blood clotting. When a person receives a cut, or injures themselves, platelets come to the site of injury and bind to damaged vessel, thus causing a blood clot and helping to stop the bleeding that accompanies the injury (Williams). However, with a reduced platelet count, this function can be impaired. Patients can easily bruise or bleed due to even a slight bump, as well as experience nosebleeds. Bleeding gums are another symptom of Thrombocytopenia (MDS Foundation). Based on symptoms, doctors might decide to test a patient for Myelodysplastic

Haemostasis is a normal physiological process to stops bleeding and maintains blood in the fluid state.

Platelets are not really cells in a way. As Marieb (2012) mentions,” They are fragments of bizarre multinucleate cells called megakaryocytes (meg″ah-kar′e-o-sītz), which pinch off thousands of anucleate platelet “pieces” that quickly seal themselves off from the surrounding fluids” (p. 344) The liver helps produce blood clotting factors. If it is not in working order then the person is not able to stop bleeding as easily as someone who has a properly working liver. There is a correction to help produce the proper amount of blood clotting factors and that is to take Vitamin K.

When von Willebrand factor is insufficient or not operational appropriately because of structural defects, small blood cells called platelets cannot stick together properly, nor can they attach themselves normally to the blood vessel walls when an injury has occurred. The result is interfering with the clotting course, and uncontrolled bleeding may continue. VWD is the most common bleeding disorder, affecting up to 1% of the United States population. It is carried on chromosome 12 and occurs equally in men and women (National Heart, Lung, and Blood Institute,

Leads to a reduced ability to form blood clots due to a decreased number of platelets.

Disseminated intravascular coagulation (DIC) is an acquired syndrome that occurs when a stimulus pathologically activates intravascular coagulation and fibrinolysis resulting in an unbalanced hemostasis (Cunningham, 1999; Huether & McCance, 2008; Wada, 2008). The initiation of DIC starts with the release of tissue factor (TF) by the endothelial cells or white blood cells (WBCs). TF are present on many different cell types including lungs, brain, and placenta. The release of TF is subsequent to a variety of causes including trauma, ischemia, excessive metabolic stress, tumors, infectious organisms, exposure to cytokines and endotoxins (Baglin, 1996; Vinay, Abul, Nelson, & Richard, 2007). The release of endotoxin is the means by which

Hemophilia is a rare genetic blood clotting disorder that primarily affects males. People living with hemophilia do not have enough of, or are missing, one of the blood clotting proteins naturally found in blood. Two of the most common forms of hemophilia are A and B. In persons with hemophilia A (also called classic hemophilia), clotting factor VIII is not present in sufficient amounts or is absent. In persons with hemophilia B (also called Christmas disease), clotting factor IX is not present in sufficient amounts or is absent. People with hemophilia do not bleed more profusely or bleed faster than normal; they bleed for a longer period of time.

Thrombocytopenia means that you have a low number of platelets in your blood. Platelets are tiny cells in the blood. When you bleed, they clump together at the cut or injury to stop the bleeding. This is called blood clotting. Not having enough platelets can cause bleeding problems.

“Hemophilia (heem-o-FILL-ee-ah) is a rare bleeding disorder in which the blood doesn 't clot normally.” (NIH, 2013) Hemophilia is a chromosome – linked bleeding disorder caused by

Venous thrombosis and arterial thrombosis are considered to be distinct pathophysiological processes due to their evident anatomical variances. With one having to deal with platelet activation while the other involving the clotting system activation, arterial thrombosis and venous thrombosis are similar yet vastly different when it comes to the processes that are performed for the body. These same processes that help the body have to be performed accordingly or the signs and symptoms begin to show. For instance, venous thrombosis can lead to Chronic Venous Insuffiency and other issues when a body part is congested. This is most commonly causes by valvular incompetence in the low-pressure superficial venous system; however, it can also be causes

These disorders occur as a result of cellular structure imbalances in the body and can cause blood clots, swelling, and excessive bleeding.

Thrombin is a naturally occurring protein that is present in the blood of humans and animals. The main function of thrombin is as an intermediate step during hemostasis, which slows bleeding by forming blood clots. Thrombin acts as an enzyme during an injury, converting fibrinogen to fibrin, which then causes blood clots to form. Due to its properties, thrombin’s application to the medical field includes topical surgery in the case of minor injuries as well as various other medical procedures such as neurosurgical operations. Apart from applications in the medical field, thrombin also plays significant roles by directly interacting with endothelial cells throughout the body.

Blood, it flows through every human’s circulatory system, and carries with it the essential ability to clot, or become thicker, which prevents excessive bleeding for a laceration. This clotting is caused by proteins in the blood, specifically the proteins known as coagulation factor VIII and coagulation factor IX, which work with tiny particles called platelets to form the clot. However, in a rare genetic disorder known as Hemophilia, these clotting proteins are either missing from the blood or found in lower does than in the blood of the average human. This causes the patient’s blood not congeal properly when a laceration occurs, which can put the patient at risk of exsanguination, or death by loss of blood.

If one of the in vivo processes is altered within the cascade the cycle cannot complete with the formation of Thrombin.