有創(chuàng)血壓監(jiān)測(cè)ppt課件-資料下載頁(yè)
2025-05-25 23:47本頁(yè)面
【正文】 壓的區(qū)別 ?測(cè)定循環(huán)血容量的不同成分 ?有創(chuàng)動(dòng)脈血壓測(cè)定壓強(qiáng) ?即單位面積上循環(huán)血液所產(chǎn)生的壓力 ?袖帶血壓測(cè)定血流 ?單位時(shí)間內(nèi)流過(guò)的血液量 有創(chuàng)動(dòng)脈壓監(jiān)測(cè) : 血壓讀數(shù) ?健康人有創(chuàng)及無(wú)創(chuàng)血壓測(cè)定 MAP相差不超過(guò) 10 mmHg ?高血壓患者 ?無(wú)創(chuàng)血壓低估實(shí)際血壓 ?低血壓患者 ?無(wú)創(chuàng)血壓高估實(shí)際血壓 有創(chuàng)動(dòng)脈壓監(jiān)測(cè) : 壓力波形 ?當(dāng)對(duì)有創(chuàng)血壓讀數(shù)有懷疑時(shí) , 應(yīng)當(dāng)觀察動(dòng)脈壓力波形 有創(chuàng)動(dòng)脈壓監(jiān)測(cè) : 壓力波形 ? The initial steep up swing is called the anacrotic rise and occurs during early systole with the opening of the aortic valve and left ventricular contraction. The rounded peak of the waveform is due to the continued stroke volume ejection from the left ventricular contraction and is therefore still in systole. The other side of the waveform is the downward slope which, represents the peripheral run off following the cessation of the contraction. The notch on the downward slope represents the closure of the aortic valve and is called the dicrotic notch which heralds the onset of diastole and the waveform will continue to decline until the next systole (Darovic amp。 Vanriper, 1995). 有創(chuàng)動(dòng)脈壓監(jiān)測(cè) : 壓力波形 有創(chuàng)動(dòng)脈壓監(jiān)測(cè) : 壓力波形 ?收縮期升支 (anacrotic limb)主要反映了左心室收縮所產(chǎn)生的脈壓 有創(chuàng)動(dòng)脈壓監(jiān)測(cè) : 壓力波形 ?升支肩部 (anacrotic shoulder) ? 波形的圓頂部分 ? 主要反映了容量移動(dòng)的結(jié)果 ?波形峰值即為收縮壓 有創(chuàng)動(dòng)脈壓監(jiān)測(cè) : 壓力波形 ? 重脈波 (dicrotic limb) ? 重搏切跡 (dicrotic notch) ? 主動(dòng)脈瓣關(guān)閉及逆向波 ? 重搏切跡位置 ?主動(dòng)脈瓣關(guān)閉時(shí)間 ?動(dòng)脈壓測(cè)定部位 有創(chuàng)動(dòng)脈壓監(jiān)測(cè) : 壓力波形 ? 重脈波 (dicrotic limb) ? 重搏切跡 (dicrotic notch) ? 主動(dòng)脈瓣關(guān)閉及逆向波 ? 重搏切跡位置 ?主動(dòng)脈瓣關(guān)閉時(shí)間 ?動(dòng)脈壓測(cè)定部位 有創(chuàng)動(dòng)脈壓監(jiān)測(cè) : 壓力波形 ?重搏切跡后的波形受到動(dòng)脈順應(yīng)性和心率的影響 ?在下一收縮周期前測(cè)定舒張壓
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