Patient on anti-coagulant therapy requires an extraction to be performed. Which of the following is  NOT true:
A. Minor post operative bleedings can be reduced somehow by using tranexamic acid B. Prothrombin value (INR) of 3 is enough to perform extraction
C. It takes at least 8 hours for heparin to take effects
D. Heparin should be administered sub-cutaneous

1 Answer

Answer :

C. It takes at least 8 hours for heparin to take effects

Related questions

Description : Which of the following is not true about warfarin, a. INR of 3 is enough to start any extraction. b. Affects extrinsic system and increases prothrombin time. c. Heparin can be given subcutaneously ... rapidly. d. It takes at least 12 hours for Vitamin K to reverse the effects of coumarin.

Last Answer : d. It takes at least 12 hours for Vitamin K to reverse the effects of coumarin.

Description : Which of the following is not true about warfarin, ** A. INR of 3 is enough to start any extraction B. Affects extrinsic system and decreases prothrombin time C. Heparin can be given subcutaneously and acts rapidly D. It takes up to 12 hours for Vitamin K to reverse the effects of warfarin

Last Answer : B. Affects extrinsic system and decreases prothrombin time

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.

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

Description : What is NOT TRUE in relation to the prescription of 5mg or 10mg of diazepam for sedation?check A. Patient commonly complain of post operative headache T B. An acceptable level of anxiolytic ... to 8 hours post operatively T E. As Benzodiazepine the action can be reversed with FlumazepilNE T

Last Answer : C. There is a profound amnesic action and no side affects not sure

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

Description : An adult patient with a history of bacterial endocarditis requires prophylactic administration of antibiotics prior to removal of teeth. Indicate the pre-operative regimen:** A. Amoxicillin 2 gram ... orally six hours before operation C. Tetracycline 250-500 mg orally 2 hours before treatment

Last Answer : A. Amoxicillin 2 gram one hour before operation orally

Description : .In minor oral surgery which is TRUE in regard to antibiotics: a. Amoxil is satisfactory against most oral infection. b. Metronidazole and Amoxil have the same penetrating power. c. It is evident that it will reduce post operative swelling.

Last Answer : a. Amoxil is satisfactory against most oral infection.

Description : In minor oral surgery, what is TRUE in regard to antibiotics: A. Amoxil is satisfactory against most oral infections B. Metronidazole and Amoxil have the same penetrating power C. It is evident that it will reduce post operative swelling

Last Answer : A. Amoxil is satisfactory against most oral infections

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

Description : A patient who has been taking quantities of aspirin might show increased post operative bleeding because aspirin inhibits:** A. Synthesis of thromboxane A2 and prevents platelet aggregation B. ... network E. Increase the absorption of vitamin K and prevents synthesis of blood clotting factors

Last Answer : A. Synthesis of thromboxane A2 and prevents platelet aggregation

Description : A 65 years-old patient needs extraction of 44; he has taken insulin in the morning. What preoperative advice you should give: A. Take more sugar B. Maintain normal diet C. Antibiotic 2 hours before D. Medication increases preoperatively

Last Answer : B. Maintain normal diet

Description : Heparin therapy is usually considered therapeutic when the patient's activated partial thromboplasin time (aPTT) is how many times normal? a) 1.5 to 2 The amount of heparin administered is based on aPTT ... value would have to be greater than .25 to .75 times normal to be considered therapeutic.

Last Answer : a) 1.5 to 2 The amount of heparin administered is based on aPTT results, which should be obtained in follow-up to any alteration of dosage.

Description : Which is the anti-coagulant substance in blood? (1) Fibrinogen (2) Heparin (3) Thrombin (4) Globin

Last Answer : Heparin

Description : Which of the following statement(s) concerning laboratory studies used in monitoring a patient with intravenous heparinization is/are correct? a. The platelet count should be followed because of the ... serum creatinine should be measured daily to allow adjustments in dose based on renal function

Last Answer : Answer: a, c In monitoring the effect of heparin, an activated partial thromboplastin time (aPTT) of 1.5 control or a thrombin clotting time (TCT) of 2 times control reflects adequate ... system. Therefore the dose of heparin need not be adjusted in cases of liver or renal dysfunction

Description : External pneumatic compression has been advocated for the prevention of deep venous thrombosis during operative procedures. Which of the following statement(s) concerning the use of external pneumatic ... includes through the operation and for at least several days in the postoperative period

Last Answer : Answer: b, c, d In many well-controlled studies of venous prophylaxis, intermittent pneumatic compression has been found to be as effective as low-dose heparin therapy. In addition to augmentation ... be used through the operation and for at least five days in the face or prolonged immobilization

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

Description : As far as surgical removal of wisdom teeth is concerned which of the following is true? a- Prophylactic prescription of antibiotic reduces dramatically the chances of infection. b- Raising a lingual ... e- The use of vasoconstrictors in local anaesthetics will increase the chances of infection.

Last Answer : b- Raising a lingual flap will increases the incidence of neurapraxia but will reduce the incidence of neurotmesis with respect to the lingual nerve.

Description : What is TRUE about Benzodiazepine and diazepam in 5-10mg oral dose used for oral sedation in dentistry: A. Good analgesic effect if given 1 hour prior to dental sessions B. Would be reversed ... Benzodiazepam C. Post operative headache D. There is a profound amnesic action and no side affects

Last Answer : B. Would be reversed by flumazepil because it is a Benzodiazepam

Description : As far as surgical removal of wisdom teeth is concerned, which of the following is true?**CHECK A. Prophylactic prescription of antibiotic reduces dramatically the chances of infection B. Raising ... root E. The use of vasoconstrictors in local anaesthetics will increase the chances of infection.

Last Answer : C. Prophylactic prescription of dexamethasone will dramatically reduces post operative swelling

Description : Bleeding complications are frequently associated with fibrinolytic therapy. Which of the following statement(s) concerning complications of fibrinolytic therapy is/are true? a. Careful monitoring of prothrombin time ... months ago can be treated with fibrinolytic therapy if head CT scan is normal

Last Answer : Answer: b Fibrinolytic therapy induces a hemostatic defect through a combination of factors. Hypofibrinogenemia and fibrin degradation products inhibit fibrin polymerization and, in combination ... is considered a major relative contraindication to either regional or systemic thrombolytic therapy

Description : A patient to be commenced on oral anticoagulant therapy for DVT would be treated with (a) Oral anticoagulant therapy with warfarin for a goal intenational normalized ration (INR) of 2-3 (b) Oral anticoagulant therapy ... of 2.5-3.5 (c) Oral anticoagulant therapy with aspirin for a goal INR of 2-3

Last Answer : Ans: A

Description : If amalgam gets contaminated with moisture, the most uncommon result is:** A. Blister formation B. Post operative pain C. Secondary caries D. Lower compressive strength

Last Answer : C. Secondary caries

Description : Tetracycline hydrochloride conditioning of root surfaces in periodontal surgery is to: A. Sterilise the root surface B. May enhance binding of fibronectin and fibroblast C. Aids in re-mineralising the root surface D. Assist the biding of lamina dura E. Prevents post operative infections

Last Answer : B. May enhance binding of fibronectin and fibroblast

Description : The termination of heparin activity by protamine sulfate is due to (a) A chelating action (b) The inhibition of gastrointestinal absorption of heparin (c) The displacement of heparin-plasma protein binding (d) An acid-base interaction (e) The prothrombin-like activity of protamine

Last Answer : Ans: D

Description : The HIV titer of an AIDS patient was found to be reduced but still detectable after 6 months of tripple drug anti-HIV therapy. The best course of action in this patient is: A. Continue the ... 2 drugs and continue one previously used drug D. Replace one drug and continue two previously used drugs

Last Answer : B. Replace all 3 drugs with a set of another 3 drugs

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

Description : Which of the following statement(s) is/are true concerning heparin-associated thrombocytopenia? a. Heparin-associated thrombocytopenia occurs only in the face of over anticoagulation with heparin b. ... d. Heparin-associated thrombocytopenia may be seen within hours of initiation of heparin therapy

Last Answer : Answer: b, c Heparin-associated thrombocytopenia occurs in 0.6% to 30% of patients who receive heparin, although severe thrombocytopenia (platelet counts less than 100,000) is seen in ... as coating on pulmonary artery catheters or low rate infusion into arterial catheters may cause this syndrome

Description : A persistent oroantral fistula for a 12 weeks period following the extraction of a maxillary first permanent molar is best treated by, a. Further review and reassurance since it will most ... Excision of the fistula and surgical closure. e. Maxillary antral wash out and nasal antrostomy.

Last Answer : d. Excision of the fistula and surgical closure.

Description : Which of the following is a major disadvantage to immediate complete denture therapy: A. Trauma to extraction site FB. Increased the potential of infection C. Impossibility for anterior try in D. Excessive resorption of residual ridge

Last Answer : C. Impossibility for anterior try in

Description : Which of the following is a major disadvantage to immediate complete denture therapy, A. Trauma to extraction site B. Increased potential of infection C. Impossibility for anterior try in D. Excessive resorption of residual ridge

Last Answer : C. Impossibility for anterior try in

Description : A persistent oroantral fistula for a 12 weeks period following the extraction of a maxillary first permanent molar is best treated by,** A. Further review and reassurance since it will most ... . Excision of the fistula and surgical closure E. Maxillary antral wash out and nasal antrostomy.

Last Answer : D. Excision of the fistula and surgical closure

Description : What is TRUE about vertical dimension:  A. Does not change for the whole life   B. Decreases when head is tilted back (is the opposite and if is tilted forward decreases, patient  supine reduced, stress and pain also reduced)  C. Increases when a lower denture is placed in mouth 

Last Answer : C. Increases when a lower denture is placed in mouth 

Description : The removable partial denture requires relining what would be the most appropriate action, A. take a new impression by asking the patient to occlude on it B. Provide equal space (maybe it was ... gingival tissues. C. Make sure the framework and retainers are seated in place before taking impression

Last Answer : C. Make sure the framework and retainers are seated in place before taking impression

Description : What is your management with a chronic oral antral fistula for some time after the extraction of maxillary first molar: A. Surgical closure B. Anti-biotic and nasal decongestant C. Wash the antrum D. All of the above

Last Answer : D. All of the above

Description : All of the following should be considered for systemic antibiotic except: A. Extraction of tooth with acute dento alveolar abscess B. Necrotic ulcerative gingivitis (ANUG) unless it is acute. C. ... of 38 or 48 with acute pericoronitis D. Full mouth extraction for a patient with perio disease

Last Answer : B. Necrotic ulcerative gingivitis (ANUG) unless it is acute.

Description : How do prepare a patient with rheumatic fever before extraction: A. 6000000 units of benzoyl penicillin B. 2g Amoxicillin pre-operatively

Last Answer : B. 2g Amoxicillin pre-operatively

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

Description : Basal cell carcinoma is characterised by, a.Rapid growth and metastasis. b.Local cutaneous invasion. c. Inability to invade bone. d.Poor prognosis. e.Radiation resistance. f.Can not metastasise to the bone.

Last Answer : b.Local cutaneous invasion.

Description : Basal cell carcinoma is characterised by, A. Rapid growth and metastasis B. Local cutaneous invasion C. Inability to invade bone D. Poor prognosis E. Radiation resistance F. Can not metastasise to the bon

Last Answer : B. Local cutaneous invasion

Description : The following is true of anti-H.pylori therapy except: A. It is indicated in all patients of peptic ulcer B. Resistance to any single antimicrobial drug develops rapidly C. Concurrent ... efficacy of the regimen D. Colloidal bismuth directly inhibits H.pylori but has poor patient acceptability

Last Answer : A. It is indicated in all patients of peptic ulcer

Description : A 10 years-old child presents with crowding of the dentition and desires correction. What would your next step be: a. Perform mixed dentition analysis. b. Extract the deciduous teeth. c. Ask ... permanent dentition erupts. d. Apply a fixed appliance. e. Review in yearly intervals.

Last Answer : a. Perform mixed dentition analysis.

Description : A patient shows a lesion on the tongue adjacent to sharp tooth. You “round off” the sharp area and recall patient after one month to see the lesion turning smaller in size. What would be your next step: A. Keep observing B. Perform an excision biopsy C. Prescribe Kenalog and Orabase

Last Answer : A. Keep observing

Description : A 10 years-old child presents with crowding of the dentition and desires correction. What would your next step be: A. Perform mixed dentition analysis B. Extract the deciduous teeth C. Ask ... off and complete permanent dentition erupts D. Apply a fixed appliances E. Review in yearly intervals

Last Answer : A. Perform mixed dentition analysis

Description : Assertion: Heparin is an anticoagulant found in mammals. Reason: Heparin prevents the conversion of prothrombin to thrombin

Last Answer : Assertion: Heparin is an anticoagulant found in mammals. Reason: Heparin prevents the conversion of ... . If both Assertion & Reason are false.

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.

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

Description : Low doses of heparin prolong: A. Bleeding time B. Activated partial thromboplastin time C. Prothrombin time D. Both ‘B’ and ‘C’

Last Answer : B. Activated partial thromboplastin time

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

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