What is the importance of prothrombin in blood clotting? -Biology

What is the importance of prothrombin in blood clotting? -Biology
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Tests of coagulation are used to monitor anticoagulation treatment and detect intrinsic abnormalities in coagulation. Which of the following statement(s) is/are true concerning coagulation tests? a. Prothrombin time (PT) measures both the intrinsic and extrinsic clotting pathways and fibrinogen b. Activated partial thromboplastin time (aPTT) can be used to monitor both oral anticoagulation with Warfarin and intravenous anticoagulation with heparin c. Thrombin clotting time (TCT) is a measurement of the time it takes for exogenously administered thrombin to turn plasma fibrinogen into fibrin clot d. Whole blood activated clotting time (ACT) is a measurement of the ability of whole blood to clot and is used to monitor heparin levels intraoperatively during cardiovascular and peripheral vascu

Description : Tests of coagulation are used to monitor anticoagulation treatment and detect intrinsic abnormalities in coagulation. Which of the following statement(s) is/are true concerning ... is used to monitor heparin levels intraoperatively during cardiovascular and peripheral vascular operations

Last Answer : Answer: a, c, d Coagulation tests include prothrombin time (PT), which measures the intrinsic and extrinsic pathways of fibrinogen production and is the most common method for ... more while for peripheral vascular applications, values of 250 seconds or greater are considered appropriate

Prothrombin which helps in clotting of blood is released by?

Description : Prothrombin which helps in clotting of blood is released by?

Last Answer : blood platelets

A patient on dicoumarol treatment needs extraction. Which of the following is MOST valuable in evaluating surgical risks: A. Clotting time B. Bleeding time C. Prothrombin time D. Sedimentation rate E. Complete blood cell count

Description : A patient on dicoumarol treatment needs extraction. Which of the following is MOST valuable in evaluating surgical risks: A. Clotting time B. Bleeding time C. Prothrombin time D. Sedimentation rate E. Complete blood cell count

Last Answer : C. Prothrombin time

Blood level of which clotting factor declines most rapidly after the initiation of warfarin therapy: A. Factor VII B. Factor IX C. Factor X D. Prothrombin

Description : Blood level of which clotting factor declines most rapidly after the initiation of warfarin therapy: A. Factor VII B. Factor IX C. Factor X D. Prothrombin

Last Answer : A. Factor VII

The standard management oral anticoagulant therapy for chronic treatment of venous thromboembolism is with the drug warfarin. Which of the following statement(s) is/are true concerning the administration of warfarin? a. An important complication of warfarin therapy is skin necrosis in patients with protein C deficiency b. Warfarin interferes with vitamin K dependent clotting factors II, VII, IX, X c. For effective anticoagulation the prothrombin time (PT) should be kept at 2 control d. It is recommended that warfarin be continued for at least one year after initial episode of deep venous thrombosis

Description : The standard management oral anticoagulant therapy for chronic treatment of venous thromboembolism is with the drug warfarin. Which of the following statement(s) is/are true concerning the administration ... warfarin be continued for at least one year after initial episode of deep venous thrombosis

Last Answer : Answer: a, b Warfarin interferes with the vitamin K dependent clotting factors II, VII, IX and X, protein C, and protein S. An important complication of warfarin is skin ... the benefit from anticoagulant therapy and thus is the basis for discontinuing warfarin administration at this time

Which of the following statement(s) is/are true concerning hemophilia A? a. Hemophilia A is inherited as a sex-linked recessive deficiency of factor VIII b. A positive family history for bleeding disorders present in all patients c. Laboratory tests reveal a prolongation of aPTT, prothrombin time (PT), thrombin clotting time and platelet aggregation d. Spontaneous bleeding is unusual with factor VIII levels greater than 10% of normal

Description : Which of the following statement(s) is/are true concerning hemophilia A? a. Hemophilia A is inherited as a sex-linked recessive deficiency of factor VIII b. A positive family history for ... platelet aggregation d. Spontaneous bleeding is unusual with factor VIII levels greater than 10% of normal

Last Answer : Answer: a, d Hemophilia A is inherited as a sex-linked recessive deficiency of factor VIII although 0% of cases are secondary to spontaneous mutation. The incidence of this abnormality is ... factor levels as low as 1% have been noted and patients are at risk for spontaneous bleeding

Patient with haemophilia presents which of the following findings:** A. Increased prothrombin time B. Increased bleeding time C. Increased clotting time

Description : Patient with haemophilia presents which of the following findings:** A. Increased prothrombin time B. Increased bleeding time C. Increased clotting time

Last Answer : A. Increased prothrombin time

The following statements are true of oral anticoagulants except: A. They interfere with an early step in the synthesis of clotting factors B. Irrespective of the dose administered, their anticoagulant effect has a latency of onset of 1-3 days C. Their dose is adjusted by repeated measurement of prothrombin time D. They are contraindicated during pregnancy

Description : The following statements are true of oral anticoagulants except: A. They interfere with an early step in the synthesis of clotting factors B. Irrespective of the dose administered, their ... dose is adjusted by repeated measurement of prothrombin time D. They are contraindicated during pregnancy

Last Answer : A. They interfere with an early step in the synthesis of clotting factors

Following is not the clotting factor ___________ a. Fibrinogen b. Prothrombin c. Hageman factor d. Ferritin

Description : Following is not the clotting factor ___________ a. Fibrinogen b. Prothrombin c. Hageman factor d. Ferritin

Last Answer : d. Ferritin

What triggers blood clotting? -Biology

Description : What triggers blood clotting? -Biology

Last Answer : answer:

What is blood clotting? -Biology

Description : What is blood clotting? -Biology

Last Answer : answer:

How do platelets initiate blood clotting? -Biology

Description : How do platelets initiate blood clotting? -Biology

Last Answer : answer:

What are the factors that oppose blood clotting? -Biology

Description : What are the factors that oppose blood clotting? -Biology

Last Answer : answer:

The evaluation of a patient scheduled for elective surgery should always include the following as tests of hemostasis and coagulation: A. History and physical examination. B. Complete blood count (CBC), including platelet count. C. Prothrombin time (PT) and activated partial thromboplastin time (APTT). D. Studies of platelet aggregation with adenosine diphosphate (ADP) and epinephrine.

Description : The evaluation of a patient scheduled for elective surgery should always include the following as tests of hemostasis and coagulation: A. History and physical examination. B. Complete blood count ( ... (APTT). D. Studies of platelet aggregation with adenosine diphosphate (ADP) and epinephrine.

Last Answer : Answer: A DISCUSSION: The evaluation of most patients scheduled for elective surgery who do not have a history of significant bleeding disorders is somewhat controversial. An adequate history and ... suspected of having qualitative defects of platelet function (e.g., von Willebrand's disease)

Blood fails to clot white flowing in the blood vessel because of the presence of - (1) Hepatin (2) Prothrombin (3) liaemoglobin (4) Iltrudin

Description : Blood fails to clot white flowing in the blood vessel because of the presence of - (1) Hepatin (2) Prothrombin (3) liaemoglobin (4) Iltrudin

Last Answer : (1) Hepatin Explanation: Heparin also known as unfractionated heparin, a highly sulfated glycosaminoglycan, is widely used as an injectable anticoagulant, and has the highest negative charge density of any known biological molecule.

Blood does not clot in the blood vessels due to the presence of – (1) Thrombin (2) Fibrinogen (3) Heparin (4) Prothrombin

Description : Blood does not clot in the blood vessels due to the presence of – (1) Thrombin (2) Fibrinogen (3) Heparin (4) Prothrombin

Last Answer : (3) Heparin Explanation: There are two major facets of the clotting mechanism — the platelets, and the thrombin system. The thrombin system consists of several blood proteins that, when bleeding occurs, become activated.

The prothrombin time a. assess the extrinsic pathway of the blood coagulation cascade b. is prolonged in patients with fat absorption c. is increased by warfarin d. all above

Description : The prothrombin time a. assess the extrinsic pathway of the blood coagulation cascade b. is prolonged in patients with fat absorption c. is increased by warfarin d. all above

Last Answer : all above

The prothrombin time a. assess the extrinsic pathway of the blood coagulation cascade b. is prolonged in patients with fat absorption c. is increased by warfarin d. is increased by heparin

Description : The prothrombin time a. assess the extrinsic pathway of the blood coagulation cascade b. is prolonged in patients with fat absorption c. is increased by warfarin d. is increased by heparin

Last Answer : assess the extrinsic pathway of the blood coagulation cascade

A 50 years-old man presented after a full mouth extraction complaining that he ”bled all night”. Which of the following pre. existing conditions could be responsible for the post operative bleeding: a. Blood pressure reading of 140/80 b. Gastric ulcer. c. Elevated prothrombin time. d. None of the above.

Description : A 50 years-old man presented after a full mouth extraction complaining that he bled all night . Which of the following pre. existing conditions could be responsible for the post operative bleeding: a. Blood ... 140/80 b. Gastric ulcer. c. Elevated prothrombin time. d. None of the above.

Last Answer : c. Elevated prothrombin time.

A 50 years old man presents after a full mouth extraction complaining that he “bled all night”. Which of the following pre existing conditions could be responsible for the post operative bleeding: A. Blood pressure reading of 180/110 B. Gastric ulcer C. Elevated prothrombin time D. A & C are correct E. None of the above

Description : A 50 years old man presents after a full mouth extraction complaining that he bled all night . Which of the following pre existing conditions could be responsible for the post operative bleeding: A. Blood ... ulcer C. Elevated prothrombin time D. A & C are correct E. None of the above

Last Answer : D. A & C are correct

he primary mechanism by which heparin prevents coagulation of blood is: A. Direct inhibition of prothrombin to thrombin conversion B. Facilitation of antithrombin III mediated inhibition of factor Xa and thrombin C. Activation of antithrombin III to inhibit factors IX and XI D. Inhibition of factors XIIa and XIIIa

Description : he primary mechanism by which heparin prevents coagulation of blood is: A. Direct inhibition of prothrombin to thrombin conversion B. Facilitation of antithrombin III mediated inhibition of factor Xa and ... of antithrombin III to inhibit factors IX and XI D. Inhibition of factors XIIa and XIIIa

Last Answer : B. Facilitation of antithrombin III mediated inhibition of factor Xa and thrombi

Blood fails to clot white flowing in the blood vessel because of the presence of (1) Heparin (2) Prothrombin (3) Haemoglobin (4) Hirudin

Description : Blood fails to clot white flowing in the blood vessel because of the presence of (1) Heparin (2) Prothrombin (3) Haemoglobin (4) Hirudin

Last Answer : Heparin

Blood does not clot in the blood vessels due to the presence of (1) Thrombin (2) Fibrinogen (3) Heparin (4) Prothrombin

Description : Blood does not clot in the blood vessels due to the presence of (1) Thrombin (2) Fibrinogen (3) Heparin (4) Prothrombin

Last Answer : Thrombin

What is prothrombin? -Biology

Description : What is prothrombin? -Biology

Last Answer : answer:

Deficiency of which vitamin does not cause blood clotting? -General Knowledge

Description : Deficiency of which vitamin does not cause blood clotting? -General Knowledge

Last Answer : answer:

What is blood clotting ?

Description : What is blood clotting ?

Last Answer : The process by which fibrinogen is separated from the blood plasma from the wound site and stops the bleeding by forming fibrin reticulum in the wound site so that the residual blood becomes clot is called blood clotting or blood clotting.

What is the light residual part of the blood after blood clotting ?

Last Answer : Serum is the light residual part of the blood after blood clotting.

Assertion: Platelets play an important role in blood clotting. Reason: In the blood oozing from an injury, the platelets disintegrate and release thro

Description : Assertion: Platelets play an important role in blood clotting. Reason: In the blood oozing from an injury, the platelets disintegrate and release thro

Last Answer : Assertion: Platelets play an important role in blood clotting. Reason: In the blood oozing from an ... D. If both Assertion & Reason are false.

The following are needed for blood -clotting in mammals

Description : The following are needed for blood -clotting in mammals

Last Answer : The following are needed for blood -clotting in mammals A. `Ca^(++)` and Vitamin E B. `Ca^(++)` and ... +)` and Vitamin A D. `K^(+)` and Vitamin K

During blood clotting, which of the following is used?

Description : During blood clotting, which of the following is used?

Last Answer : During blood clotting, which of the following is used? A. Co B. `Ca^(+ +)` C. `Na^(+)` and thromboplastin D. `Cl^(-)`

Which of the following , does not help in clotting of blood ?

Description : Which of the following , does not help in clotting of blood ?

Last Answer : Which of the following , does not help in clotting of blood ? A. Heparin B. Prothrombin C. `Ca^(2+)` D. `Exposure to `O_(2)`

Blood clotting can be prevented in a test tube by adding a little

Description : Blood clotting can be prevented in a test tube by adding a little

Last Answer : Blood clotting can be prevented in a test tube by adding a little A. Sodium oxalate B. Sodium chloride C. Sodium hydroxide D. Ammonium chloride

Liquid which remain after clotting of blood is called as `:-`

Description : Liquid which remain after clotting of blood is called as `:-`

Last Answer : Liquid which remain after clotting of blood is called as `:-` A. Serum B. Plasma C. Lymph D. Blood

During blood clotting , fibrin is produced by

Description : During blood clotting , fibrin is produced by

Last Answer : During blood clotting , fibrin is produced by A. Thrombokinase B. Prothrombin C. Liver D. Proteolysis

Blood clotting requires

Description : Blood clotting requires

Last Answer : Blood clotting requires A. `Na^(+)` and `K^(+)` B. `Na^(+)` and prothrombin C. `Na^(+)` and thromboplastin D. `Ca^(2+)` and thromboplastin

Blood clotting requires `:-`

Description : Blood clotting requires `:-`

Last Answer : Blood clotting requires `:-` A. `Na^(+)+K^(+)` B. `Na^(+) +` Protbrombin C. `Na^(+) +` Thromboplastin D. `Ca^(++)+` Thromboplastin

Why does blood not clotting properly increase risk of getting infections?

Description : Why does blood not clotting properly increase risk of getting infections?

Last Answer : Feel Free to Answer

Blood clotting?

Description : Blood clotting?

Last Answer : The body contains a natural process to stop bleeding from minor cuts in a matter of several minutes. When a small artery is cut, the collagen fibers in its tissue are exposed, which signals the clotting process ... Hospital. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

Deficiency of which of the following causes non-clotting of blood?

Description : Deficiency of which of the following causes non-clotting of blood?

Last Answer : Vitamin K

Vitamin K regulates the synthesis of blood clotting factors. (A) VII (B) IX (C) X (D) All of these

Description : Vitamin K regulates the synthesis of blood clotting factors. (A) VII (B) IX (C) X (D) All of these

Last Answer : Answer : D

Vitamin K regulates the synthesis of blood clotting factors: (A) VII (B) IX (C) X (D) All of these

Description : Vitamin K regulates the synthesis of blood clotting factors: (A) VII (B) IX (C) X (D) All of these

Last Answer : Answer : D

Vitamin K is involved in posttranslational modification of the blood clotting factors by acting as cofactor for the enzyme: (A) Carboxylase (B) Decarboxylase (C) Hydroxylase (D) Oxidase

Description : Vitamin K is involved in posttranslational modification of the blood clotting factors by acting as cofactor for the enzyme: (A) Carboxylase (B) Decarboxylase (C) Hydroxylase (D) Oxidase

Last Answer : Answer : A

A protein reacts with biuret reagent which indicates 2 or more (A) Blood clotting (B) Peptide bond (C) Disulphide bonds (D) Hydrophobic bonds

Description : A protein reacts with biuret reagent which indicates 2 or more (A) Blood clotting (B) Peptide bond (C) Disulphide bonds (D) Hydrophobic bonds

Last Answer : Answer : B

Platelets contain an enzyme which has important role in clotting in blood. This enzyme is known as (A) Cholinesterase (B) Transaminase (C) Decarboxylase (D) Thrombokinase

Description : Platelets contain an enzyme which has important role in clotting in blood. This enzyme is known as (A) Cholinesterase (B) Transaminase (C) Decarboxylase (D) Thrombokinase

Last Answer : Answer : D

Insulin is a protein which controls (A) Blood clotting (B) Metabolic pathway (C) Digestion (D) Kreb’s cycle

Description : Insulin is a protein which controls (A) Blood clotting (B) Metabolic pathway (C) Digestion (D) Kreb’s cycle

Last Answer : Answer : B

Abnormalities of blood clotting are (A) Haemophilia (B) ********* disease (C) Gout (D) Both (A) and (B)

Description : Abnormalities of blood clotting are (A) Haemophilia (B) Christmas disease (C) Gout (D) Both (A) and (B)

Last Answer : Answer : D

Which of the following is involved in blood clotting? A. Sodium B. Magnesium C. Potassium D. Calcium

Description : Which of the following is involved in blood clotting? A. Sodium B. Magnesium C. Potassium D. Calcium

Last Answer : ANSWER: D

Which of the following is involved in blood clotting? A. Sodium B. Magnesium C. Potassium D. Calcium

Description : Which of the following is involved in blood clotting? A. Sodium B. Magnesium C. Potassium D. Calcium

Last Answer : ANSWER: D

Which of the following is involved in blood clotting? A. Sodium B. Magnesium C. Potassium D. Calcium

Description : Which of the following is involved in blood clotting? A. Sodium B. Magnesium C. Potassium D. Calcium

Last Answer : ANSWER: D

Which of the following is involved in blood clotting? A. Sodium B. Magnesium C. Potassium D. Calcium

Description : Which of the following is involved in blood clotting? A. Sodium B. Magnesium C. Potassium D. Calcium

Last Answer : ANSWER: D