Puas yog s2 cais ib txwm?

2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44

S2 sib cais hnov thaum aortic thiab pulmonic li qub kaw ntawm lub sijhawm sib txawv me ntsis. Ib txwm S2 cais tuaj yeem hnov ntawm cov neeg uas tsis muaj kab mob plawv. Nco ntsoov nthuav dav ntawm S2 sib cais nrog kev tshoov siab thiab nqaim nrog qhov tas sij hawm hauv cov suab hauv qab no: Ib txwm S2 cais yog txuam nrog kev tshoov siab.

Ntxiv mus, qhov sib faib s2 txhais li cas?

A faib S2 yog ib qho kev tshawb pom ntawm auscultation ntawm lub S2 lub plawv suab. Nws tshwm sim thaum kaw lub aortic valve (A₂) thiab kaw lub ntsws ntsws (P₂) tsis synchronized thaum kev tshoov siab.

Tom qab ntawd, lo lus nug yog, puas muaj qhov sib cais ntawm s1 thiab s2? S1 yog ib txwm a ib lub suab vim tias mitral thiab tricuspid valve kaw tshwm sim yuav luag ib txhij. Lub suab thib ob lub suab ( S2 ) sawv cev kaw cov semilunar (aortic thiab pulmonary) li qub (taw tes d). S2 yog ib txwm faib vim cov aortic valve (A2) kaw ua ntej cov pulmonary valve (P2).

Kuj paub, dab tsi ua rau kev sib cav sib ceg ntawm s2?

Feem ntau ua ntawm paradoxical sib cais ntawm lub suab thib ob yog sab laug pawg ceg thaiv. Obstruction rau sab laug ventricular outflow txaus txaus kom ncua aortic valve kaw kuj tseem yuav ua rau paradoxical splitting.

Dab tsi ua rau s2 lub plawv suab?

Qhov thib ob lub plawv suab ( S2 ) yog tsim los ntawm kev kaw ntawm aortic thiab pulmonic li qub. Cov suab tsim los ntawm kev kaw lub aortic valve hu ua A2, thiab suab ua los ntawm kev kaw lub pulmonic valve yog hu ua P2. Zoo li S1 lub plawv suab , cov S2 suab tau piav qhia txog kev sib cais thiab kev siv zog.