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| Â | HealthCentral - General Encyclopedia - PTT |
 | | When the needle is inserted to draw blood, some people feel moderate pain, while others feel only a prick or stinging sensation. | | | The PTT is used to assess the intrinsic system and the common pathway of clot formation. | | | Patients receiving anticoagulant therapy: 1.5 to 2.5 times control values |
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http://www.healthcentral.com/mhc/top/003653.cfm
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| Â | Partial Thromboplastin Time Building Better Health |
| | Many of the thirteen known clotting factors in human blood are shared by both pathways; several are found in only one. | | | Heparin prevents clotting by blocking certain factors in the intrinsic pathway. | | | Certain medications besides heparin can affect the results of the PPT test. |
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http://www.buildingbetterhealth.com/topic/topic100587268
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| Â | Activated Partial Thromboplastin Time |
| | Also used to monitor therapeutic heparin, hirudin, or argatroban anticoagulation. | | | Sampling Time See Additional Information for sampling times with the various anticoagulant therapies. | | | Each laboratory determines its own therapeutic range, but it is often a PTT range that is about 1.5-2.5 times the mean of normal PTT. |
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http://www.mgh.harvard.edu/labmed/lab/coag/handbook/co003400.htm
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| Â | Centers for Medicare & Medicaid Services |
| | But the professional organization offered no new scientific or medical evidence demonstrating that the test is reasonable and necessary in those circumstances. | | | Evaluation prior to invasive procedures or operations of patients with personal history of bleeding or a condition associated with coagulopathy. | | | The Committee was concerned with the possibility of errors in the NCDs and encouraged commenters to submit copies of medical literature supporting their recommendations for change (65 FR 13087). |
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http://www.cms.hhs.gov/mcd/viewdecisionmemo.asp?id=93
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| Â | [No title] |
| | The prothrombin time (PT) is used to assess the extrinsic pathway of clotting (see below). | | | Note: the standard prothrombin time international normalized ratio (INR) is recommended for therapeutic monitoring of patients on long-term coumadin therapy. | | | Otis PT, Feinstein DI, Rapaport SI, Patch MJ: An aquired inhibitor of fibrin stabilization associated with isoniazid therapy: clinical and bioichemical observations. |
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http://www-med.stanford.edu/school/clin.labs/tests.html
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| Â | Medicare: Partial Thromboplastin Time |
| | Plasma coagulation function is readily assessed with a few simple laboratory tests: the partial thromboplastin time (PTT), prothrombin time (PT), thrombin time (TT), or a quantitative fibrinogen determination. | | | The need to repeat this test is determined by changes in the underlying medical condition and/or the dosing of heparin. | | | The PTT is not useful in determining the effects of coumadin on a patient's coagulation. |
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http://www.library.umc.edu/medi-thrombo.html
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| Â | Coagulation Manual Online |
| | This test measures the time it takes to form a primary hemostatic plug to arrest hemorrhage from a standard skin incision under controlled conditions. | | | This test is hard to control due to technique variations among technologists. | | | The bleeding time is a somewhat useful screening test for vWD and for platelet dysfunction; however, an accurate patient history can be just as valuable or better. |
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http://www.pathology.ecu.edu/coagman.htm
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| Â | Partial Thromboplastin Time - Trustworthy, Physician-Reviewed Information from WebMD |
| | For more information, see the medical test Prothrombin Time. | | | This condition is called phlebitis and is usually treated with a warm compress applied several times daily. | | | A partial thromboplastin time (PTT) test is also used to monitor treatment with blood-thinning medication, such as heparin or lepirudin (Refludan). |
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http://content.health.msn.com/hw/health_guide_atoz/hw203152.asp
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| Â | Partial Thromboplastin Time (PTT), Lupus Anticoagulant |
| | Avoid warfarin (Coumadin®) therapy for two weeks and heparin therapy for two days prior to the test. | | | Reagents with reduced amounts of phospholipid, such as the aPTT-LA and dilute Russell viper venom time (dRVVT), have enhanced sensitivity for LA. | | | Inhibitors, both factor specific and non- specific, can also prolong the aPTT. |
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http://www.labcorp.com/datasets/labcorp/html/chapter/mono/cf003700.htm
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| Â | ACTIVATED PARTIAL THROMBOPLASTIN TIME |
| | Therapeutic Range: The Activated Partial thromboplastin Time (APTT) is the most commonly used laboratory test to monitor unfractionated heparin therapy. | | | Interfering Substances: Anticoagulant therapy, Rheumatoid factor, Penicillin reaction, circulating anticoagulants. | | | A variety of conditions can complicate the administration and monitoring of unfractionated heparin therapy (increased factor VIII, lupus anticoagulant, factor XII deficiency). |
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http://www.utmb.edu/lsg/LabSurvivalGuide/hem/ACTIVATED_PARTIAL_THROMBOPLASTIN_TIME.htm
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| Â | Partial Thromboplastin Time - Unified Search Environment |
| | It is used as a screening test and to monitor HEPARIN therapy. | | | It is a test of the intrinsic pathway (factors VIII, IX, XI, and XII) and the common pathway (fibrinogen, prothrombin, factors V and X) of BLOOD COAGULATION. | | | The time required for the appearance of FIBRIN strands following the mixing of PLASMA with phospholipid platelet substitute (e.g., crude cephalins, soybean phosphatides). |
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http://www.use.hcn.com.au/subject.%60Partial%20Thromboplastin%20Time%60/home.html
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| Â | Partial Thromboplastin Time Mixing Study |
| | The PTT mixing study is indicated when the PTT is prolonged in the absence of heparin therapy. | | | If the mixture's PTT result does not correct, the patient may have an inhibitor. | | | If the mixture's PTT result does correct, the patient may have a coagulation factor deficiency. |
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http://peir.path.uab.edu/coag/printer_101.shtml
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| Â | Activated Partial Thromboplastin Time |
| | Any time that there is a change in either the reagents or the instruments, one can anticipate some change in the reactivity of the reagent to specimens from patients in different clinical settings. | | | Recently we have been able to standardize the method for the aPTT through the University Health System and at the AMVAH. | | | Since that time, new reagents to be used for the aPTT have been chosen to provide consistent performance from one lot to the next, requiring the clinician to use the test without changing her/his clinical thresholds. |
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http://clinical.uthscsa.edu/uhlabs/aptt.htm
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| Â | CLV Lab Manual - APTT (activated partial thromboplastin time). |
| | This is a measure of the intrinsic pathway and the common pathway and is influenced by changes in Factors 8, 9, 11, 12, 10, and 5. | | | Factor levels must be very low for there to be changes in the PTT. | | | CLV Lab Manual - APTT (activated partial thromboplastin time). |
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http://www.centralvetlab.com/Lab/D10_1994.htm
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| Â | Activated Partial Thromboplastin Time (APTT), Testing at Millenova Immunology Laboratories |
| | The APTT has been widely used as a test for monitoring and regulating heparin therapy. | | | Activated Partial Thromboplastin Time (APPT) is a useful and effective method for screening patients with a bleeding tendency, for evaluating the effect of therapy in procoagulant disorders and as the basis for several specific coagulant factor assay procedures. | | | This contact activation is allowed to proceed at 37oC for a specific period of time. |
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http://millenova.com/tests/aptt.asp
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| Â | activated partial thromboplastin time - General Practice Notebook |
| | The information provided herein should not be used for diagnosis or treatment of any medical condition. | | | The activated partial thromboplastin time is equivalent to the Kaolin cephalin clotting time, and is a measure of the activity of the intrinsic pathway of coagulation (VIII, IX, XI, XII). | | | Oxbridge Solutions Ltd® is an independent company owned by the authors which does not receive income from any other organisation or individual. |
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http://www.gpnotebook.com/cache/-1254817762.htm
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| Â | Cephalinex, Activated Partial Thromboplastin Time Reagent |
| | Activated partial thromboplastin time endpoints may be detected by manual methods or with any automated or semi-automated coagulation analyzer. | | | Measurement with platelet rich plasma, however, relied on the platelets as a source of phospholipid to the extent that variables such as centrifugation and patient platelet count had a significant bearing on the test results. | | | Cephalinex supplies the phospholipid platelet substitute and negatively charged surface required for plasma coagulation by way of the "intrinsic" hemostatic pathway. |
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http://www.biodatacorp.com/Data%20Sheets/cephalinex.htm
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| Â | Encyclopedia Search - Medical Dictionary Search Engines |
| | Activase thrombolytic agent see Thrombolytic therapy (tissue plasminogen activator - tPA) | | | Acute acquired cytomegalovirus infection see Infectious mononucleosis (CMV) | | | Activated partial thromboplastin time see Partial thromboplastin time (PTT) |
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http://medical-dictionary-search-engines.com/encyclopedia/?encyclopedia_name...
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| Â | Partial thromboplastin time |
| | approximately 1.5 to 2.5 times the mean normal value. | | | Heparin is most often administered as an initial intravenous bolus followed by a continuous intravenous infusion. | | | now measures the clotting time of plasma, from the activation of factor XII by a reagent (a negatively charged activator such as silica and a phospholipid) through the formation of a fibrin clot. |
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http://www.rnceus.com/coag/coagptt.html
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| Â | Coag Tests |
| | One (1) unit of FFP will raise all coag factors by approximately 8%, and the fibrinogen level by 13 mg/dL. | | | - 2 units of FFP will generally correct the PTT to within 10 seconds of baseline. |
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http://www.uams.edu/clinlab/screenin.htm
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| Â | Partial thromboplastin time |
| | The article Partial thromboplastin time has taken this page on our site and is slated for creation. | | | If you have interest in Partial thromboplastin time, we ask that you help support our efforts by clicking "view live article" on the header of this site or by visiting a site sponsor listed above. |
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http://www.bambooweb.com/articles/p/a/Partial_thromboplastin_time.html
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| Â | Activated Partial Thromboplastin Time - Wiktionary |
| | Wiktionary does not have an entry for this word yet. | | | If you created an entry under this title previously, it may have been deleted. |
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http://en.wiktionary.org/wiki/:Activated_Partial_Thromboplastin_Time
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| Â | Activated Partial Thromboplastin Time |
| | The article Activated Partial Thromboplastin Time has taken this page on our site and is slated for creation. | | | If you have interest in Activated Partial Thromboplastin Time, we ask that you help support our efforts by clicking "view live article" on the header of this site or by visiting a site sponsor listed above. |
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http://www.bambooweb.com/articles/a/c/Activated_Partial_Thromboplastin_Time.html
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| Â | Dr. Rose's Peripheral Brain--PARTIAL THROMBOPLASTIN TIME |
| | In fact, refers to groups of coagulation factors which in combination with Ca can produce Va and convert prothrombin; so "extrinsic thromboplastin" = factors of the extrinsic pathway; "intrinsic thromboplastin" = factors of the intrinsic pathway + PF-3; the former is tested in the PT assay; the latter is tested with the PTT. | | | Increases with Heparin, deficiencies of factors VIII and IX (but also X, XI, XII) and 10% of SLE pts (circulating anticoagulants) | | | and record time till 1st appearance of fibrin threads |
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http://faculty.washington.edu/momus/PB/ptt.htm
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| Â | Partial Thromboplastin Time (PTT) - Test Procedures |
| | If there is no partial correction, an inhibitor of coagulation is suspected. | | | Mixing tests - Prolonged clotting times in PT and PTT tests due to factors deficiency are corrected by the addition of normal plasma to the test plasma(mixing tests). | | | Control and duplicate samples are simultaneously evaluated averaged and compared. |
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http://www.healthseva.com/content/testproc/ptt.php3
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