Handout 1 - me. M owommUIWOQw nozamOH UHbmwhz wow Comm...

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Unformatted text preview: me. M owommUIWOQw nozamOH UHbmwhz wow Comm emgvmw>ecwm wmocbbeHOZ UHdeHUmsomm .oObdwOHHmQ mwmdas _ _ d , mammmeOm aaswmwdeflm onddmw “gmdwwswmdaq oomnmowwom <md. _<memva _ 53-30“ ooaw amaw. an wmmadmow mp :mH >Qu5mdwwm Hvadm macs Odraw odemdm Zizonwcavma armeOnosdHow wmvaSma flomw.\dHva Zoudmmmw Hw<mw Era: eouemad wwm. q szomzpaHoz fibOE Ombma wow Hmm ICE>2 HmmmZOOozemOb meamE OOSdWOHHmH _,<mwwmvwmmu W . . . . cousOHwaQ AQOUnHOHHHBm mfimdmmwl_mwmmwmnd Emcme wodcmdowm . Zmdwwcwmdma mwmdma counwowwmm filrt; 3 (:1 :1:.u gmwmncmdnwomu fl-t i;!1,iili<mwwmdwmmn 1.3it.lill ~ ~ m<m owmdwo: oodddow m<mdowmdwdo mama womm psdmwwow IwuoasmHmECM :mmn bomm noam Guam. I'll-nth. a a m _ <mmoawwmnwos oodfidow _ m A _<mmocwmw .mmmd “OOSQCOdHow W _ _ M . wmmmw EmdmeHHmE . 4 _ momdmwMow _ radeUmHmBCm mmmw EmHSdmbmdom wwws away. mSQOOstm Oo:d%0H gonad oedddow _mSM<denu. _ “Zmdmcowwma ‘0 UHmdcwvaOmm Absvwmzd emav.u Ewsau.mfiswmwd<. Exomwowmm. mao.v , .PWH‘OHJQU‘U ZOCWWH fill x? 14 1! II :t I! 3! II sr I I I. ( flaw Gadowmm" ,n oowm mes mmoowdowm :Od waaadmow admstComwm OOHQ :wdesmeswo wmoededm m >ddw0vadOH< . V : , . . II oozdwow flow L. :Hmrww 02m omddmfim HEMORRHAGE (see Fig. 9-41) ARTERIAL PRESSURE ' ARTERIAL PRESSURE CARDIAC OUTPUT , I STROKE T HEART RATE VOLUME (“‘7 VOLUME CARDIAC ' CONTRACTILITY T FILLING I VENOUS RETURN I T VENOUS FIRING BY BARORECEPTORS I VENOUS TONE I PARASYMF‘ATHETIC SYMPATHETIC SYMPATHETIC i DISCHARGE DISCHARGE DISCHARGE T0 T0 HEART TO HEART VEINS reflexes via medullaI)’ centers serious consequences of the lowered blood pressure are the reduced blood flow to the brain and cardiac muscle. Compensatory mechanisms restoring arterial pressure toward normal are summarized in Fig. 9-52; their elfects can best be appreciated irom the data oi Table 9-3: » Kidney ilow is even lower 5 min after the hemorrhage, despite the improved arterial pressure, but we recall that one oi the important compensatory mechanisms is in— creased arteriolar constriction in many organs; thus. kid— T T END-DlASTOLlC VENTRICULAR PRESSURE PERIPHERAL RESISTANCE ARTERIOLAR CONSTRICTION SYMPATH ETIC DISCHARGE TO ARTERIOLES (excluding brain and heart) FIGURE 9-52 Reflex mechanisms by which lower arterial pressure following blood loss is brought back toward-normal. The compensatory mechanisms do not restore arterial pressure completely to normal. ney blood tlow is reduced in order to maintain arterial blood pressure and thereby brain and heart blood flow. A second important compensatoryrmechanism in- volving capillary iluid exchange results from both “the decrease in blood pressure and the increase in arteriotar constriction. (Fig. 9-53). Thus. the initial event—blood loss anddecreased blood volume—is in large part coma pensateri for by the mavement of interstitial fluid into the vascular system. indeed. as shown in Table 9-4. several x fifififi 13‘?" ' um m. _ «In a. .m H. G W D. u: “NMMNMWNmuuwnNuN :ffzafa‘msug fiwfi WEN Stimuiaiiw we Hmmom wi- éw anfi Hamming ism): Z92 —-caused by T TSH (hypother OITER SYSEMS NTEGRATION ' mfimfimms {imméa flaw ' 1 , l " fifiggfiéfimé’éfifigfifi pmwrmg : ‘ fifi’géfiifififififi % {gfiafifiw} afigimfimfifi ._ $afiam$ ‘mmfifigfig I ' mxyma mama??? § : fig \ jj‘ amfiafia mmfia ‘ - mtwamci m . ,. awra‘t - _ . ’ mites:th twigs ‘ mfifiwfifi 3am .' ' __,memiy£am ; " tufiafim mm ' 7 mgr-“e Mafireamfimfl r ~ '.i‘f;3?‘.. i (source: http://mcdb.colorado.edu/courses/2115/units/cher/ADH-B|ood%20Pressure—control.gif ) ...
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This note was uploaded on 04/08/2008 for the course EBME 202 taught by Professor Cechner during the Spring '07 term at Case Western.

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Handout 1 - me. M owommUIWOQw nozamOH UHbmwhz wow Comm...

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