Video: Cov hlau lead twg muaj qhov ncaj P wave?
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
P nthwv dej tshwm sim thaum lub sinus node, tseem hu ua sinoatrial node, tsim lub peev xwm ua haujlwm uas ua rau lub atria poob qis. P wave yuav tsum ncaj ncaj rau hauv coj II yog tias qhov kev txiav txim muaj peev xwm yog los ntawm SA node. Hauv qhov teeb tsa no, ECG tau hais los ua kom pom ib txwm muaj sinus rhiab , los yog NSR.
Dhau li, qhov nce P wave txhais li cas?
Lub xub ntiag ntawm siab, peaked P vuag nyob rau hauv lead II yog ib tug kos npe rau ntawm txoj cai atrial o, feem ntau yog vim pulmonary hypertension (xws li cor pulmonale los ntawm cov kab mob ua pa ntev). Rov qab P Cov . P - yoj inversion nyob rau hauv qhov ua tsis tau zoo qhia tias tsis yog-keeb kwm keeb kwm ntawm P vuag.
Ib sab saum toj no, lub thav duab P wave txhais li cas? Ib tug "ob tug hump" los yog notched P yoj yog kuaj mob ntawm LAE yog tias lub ncov yog ib lub thawv me me lossis sib nrug ntau dua. Ib biphasic P yoj qhia sab laug atrial o yog hais tias tus downward feem ntawm lub P yoj yog ib lub thawv lossis loj dua hauv qhov tob thiab ntev.
Ntxiv mus, P wave ntawm ECG yog dab tsi?
P Wave . Cov P yoj sawv cev rau depolarization ntawm sab laug thiab sab xis atrium thiab kuj sib raug rau atrial contraction. Hais lus nruj me ntsis, atria daim ntawv cog lus sib faib thib ob tom qab P yoj pib. Vim tias nws me me, atrial repolarization feem ntau tsis pom ntawm ECG.
Dab tsi ua rau P wave abnormality?
Cov Abnormal P wave Kev nce siab lossis kev nyuaj siab ntawm ntu PTa (ib feem ntawm p zog thiab pib ntawm QRS complex) tuaj yeem tshwm sim los ntawm atrial infarction lossis pericarditis. Yog tias p - yoj yog enlarged, atria yog enlarged.
Pom zoo:
Koj yuav pom cov cim tseem ceeb rau kev tso cov hlau lead ua ntej?
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