What potential state of the blood can be caused by the formation of excessive amounts of plasmin?

Correct answer: Hypocoagulability

Explanation

While the primary role of plasmin is to dissolve existing clots, its action is not entirely specific to fibrin. Excessive plasmin can also digest key clotting factors like fibrinogen and prothrombin, which can impair the blood's ability to clot and lead to a state of hypocoagulability.

Other questions

Question 1

How does heparin primarily function as an anticoagulant?

Question 2

By what approximate factor does the effectiveness of antithrombin III for removing thrombin increase when it combines with heparin?

Question 3

In addition to thrombin, which other activated coagulation factors are removed by the heparin and antithrombin III complex?

Question 4

Which cells in the body are responsible for forming the largest quantities of heparin?

Question 5

What is the primary physiological function of plasmin?

Question 6

What powerful activator, released slowly by injured tissues and vascular endothelium, converts plasminogen into plasmin?

Question 7

What is identified in the text as an especially important function of the plasmin system?

Question 8

A deficiency in vitamin K impairs the function of a liver carboxylase, leading to an insufficiency of which group of important coagulation factors?

Question 9

In healthy individuals, where is vitamin K continually synthesized, making a deficiency resulting from poor diet uncommon?

Question 10

Why does poor absorption of fats from the gastrointestinal tract frequently cause vitamin K deficiency?

Question 11

Why do diseases of the liver, such as hepatitis or cirrhosis, sometimes lead to a severe tendency to bleed?

Question 12

What percentage of hemophilia cases is classified as hemophilia A, which is caused by a deficiency of factor VIII?

Question 13

A deficiency in which specific clotting factor is the cause of hemophilia B?

Question 14

What is the genetic transmission pattern for the factors responsible for hemophilia A and B?

Question 15

If a woman is a carrier for hemophilia, what is the statistical chance that her male offspring will inherit the illness?

Question 16

Classic hemophilia, also known as hemophilia A, is caused by a deficiency in which specific component of factor VIII?

Question 17

What is the medical definition of thrombocytopenia?

Question 18

How does the characteristic bleeding in thrombocytopenia typically differ from that seen in hemophilia?

Question 19

The clinical sign of many small, red or purplish blotches on the skin, known as petechiae, is characteristic of which bleeding disorder?

Question 20

According to the text, platelet counts below what value per microliter increase the risk for excessive bleeding after surgery or injury, compared to the normal range of 150,000 to 450,000 per microliter?

Question 21

Platelet count levels that fall as low as what value per microliter are described as being frequently lethal?

Question 22

In most patients with idiopathic thrombocytopenia, what is believed to be the underlying mechanism for the condition?

Question 23

Why is vitamin K often administered to surgical patients who have either liver disease or obstructed bile ducts?

Question 24

Which enzyme is responsible for reducing the oxidized, inactive form of vitamin K back to its active form, allowing it to be reused?

Question 25

Plasmin, the proteolytic enzyme responsible for digesting fibrin fibers, is formed from the activation of which precursor protein?

Question 26

The mast cells that produce the largest quantities of heparin are particularly abundant in the tissue surrounding the capillaries of which two organs?

Question 28

What happens to the plasma protein plasminogen during the formation of a blood clot?

Question 29

Why is vitamin K deficiency a particular concern in neonates?

Question 30

What is described as one of the most prevalent causes of vitamin K deficiency related to the function of the liver?

Question 31

What is the approximate incidence of classic hemophilia (hemophilia A) among males in the United States?

Question 32

According to the principles of X-linked recessive inheritance described, why is it rare for a woman to have hemophilia?

Question 33

What factor determines the degree of severity of the bleeding trait observed in a person with hemophilia?

Question 34

The loss of the large component of factor VIII, which has a molecular weight in the millions, results in which bleeding disorder?

Question 35

Even without a specific platelet count, what observation regarding a person's blood clot can lead to a suspicion of thrombocytopenia?

Question 36

Which of the following is listed in the text as one of the major causes of thrombocytopenia?

Question 37

What is required for the heparin molecule to exert its anticoagulant properties?

Question 38

The proteolytic enzyme plasmin, which digests fibrin fibers, is described as resembling which important digestive enzyme?

Question 39

Vitamin K serves as an essential factor for what type of liver enzyme, which is critical for making several clotting factors functional?

Question 40

While the risk of bleeding after injury increases at a higher platelet count, spontaneous bleeding will not ordinarily occur until the platelet count falls below what level?

Question 41

Which cells, found in the blood and described as being functionally almost identical to mast cells, release small quantities of heparin into the plasma?

Question 42

Typically, how long after a clot has successfully stopped bleeding does tissue plasminogen activator (t-PA) convert plasminogen to plasmin to begin removing the unnecessary clot?

Question 43

What is the general underlying cause of excessive bleeding tendencies discussed in the chapter?

Question 44

Hemophilia, a major bleeding disease, is described as occurring almost exclusively in which demographic group?

Question 45

When a patient with classic hemophilia has severe and prolonged bleeding, what is described as the only truly effective therapy?

Question 46

According to the text, what is a particularly important function of platelets in maintaining the integrity of the vasculature?

Question 47

What is the approximate proportion of hemophilia patients who do not have a family history of the disease, suggesting their condition is caused by a novel mutation event?

Question 48

What intervention, other than splenectomy, can provide temporary relief from bleeding for 1 to 4 days in a patient suffering from thrombocytopenia?

Question 49

How can liver disease cause a decreased production of prothrombin and other clotting factors through a dual mechanism?

Question 50

In addition to fibrin fibers and fibrinogen, which of the following groups of coagulation proteins can also be digested by the enzyme plasmin?