Lub sijhawm Prothrombin (PT) yog lub sijhawm uas xav tau rau kev coagulation ntshav tom qab hloov pauv ntawm prothrombin mus rau thrombin tom qab ntxiv cov ntaub so ntswg thromboplastin ntau dhau thiab cov calcium ions tsim nyog rau cov ntshav tsis txaus platelet. Lub sijhawm prothrombin siab (PT), uas yog, lub sijhawm ntev, yuav tshwm sim los ntawm ntau yam xws li cov yam ntxwv coagulation tsis zoo los ntawm yug los, cov yam ntxwv coagulation tsis zoo, cov ntshav tsis zoo anticoagulation, thiab lwm yam. Kev tshuaj xyuas tseem ceeb yog raws li nram no:

1. Cov yam ntxwv tsis zoo ntawm cov ntshav khov uas yug losKev tsim cov tshuaj coagulation factors I, II, V, VII, thiab X hauv lub cev tsis zoo yuav ua rau lub sijhawm prothrombin ntev (PT). Cov neeg mob tuaj yeem ntxiv cov tshuaj coagulation factors raws li kev qhia ntawm cov kws kho mob kom txhim kho qhov teeb meem no;

2. Cov yam ntxwv tsis zoo ntawm cov ntshav khov uas tau losCov kab mob siab hnyav uas tshwm sim ntau, tsis muaj vitamin K txaus, hyperfibrinolysis, disseminated intravascular coagulation, thiab lwm yam, cov yam no yuav ua rau cov neeg mob tsis muaj cov yam coagulation, ua rau lub sijhawm prothrombin ntev (PT). Yuav tsum tau txheeb xyuas cov laj thawj tshwj xeeb rau kev kho mob tshwj xeeb. Piv txwv li, cov neeg mob uas tsis muaj vitamin K txaus tuaj yeem kho nrog kev noj tshuaj vitamin K1 los ntawm cov hlab ntsha kom txhawb kev rov qab los ntawm lub sijhawm prothrombin mus rau qhov qub;

3. Cov ntshav tsis zoo li qub: muaj cov tshuaj anticoagulant hauv cov ntshav lossis tus neeg mob siv cov tshuaj anticoagulant, xws li aspirin thiab lwm yam tshuaj, uas muaj cov teebmeem anticoagulant, uas yuav cuam tshuam rau cov txheej txheem coagulation thiab ua kom lub sijhawm prothrombin ntev dua (PT). Nws raug pom zoo kom cov neeg mob tsum tsis txhob siv cov tshuaj anticoagulant raws li kev qhia ntawm cov kws kho mob thiab hloov mus rau lwm txoj kev kho mob.

Lub sijhawm prothrombin (PT) ntev dua 3 vib nas this muaj qhov tseem ceeb hauv kev kho mob. Yog tias nws tsuas yog siab dhau thiab tsis tshaj qhov nqi ib txwm rau 3 vib nas this, nws tuaj yeem pom ze, thiab feem ntau tsis tas yuav kho tshwj xeeb. Yog tias lub sijhawm prothrombin (PT) ntev dhau, nws yog qhov tsim nyog los nrhiav qhov ua rau tshwj xeeb thiab ua kev kho mob tshwj xeeb.