physiological bases of hemo dynamic
DESCRIPTION
Physiological bases of hemo dynamic. Kinds of blood movements. Formulas of hemodynamic. Functional types of vessels. Amortization or compensatory vessels Resistive vessels. Functional types of vessels. Sphincters Capillars. Functional types of vessels. Volume vessels Shunts. - PowerPoint PPT PresentationTRANSCRIPT
Physiological bases of hemo dynamic
Kinds of blood movements
Formulas of hemodynamic
,*8
*4
l
PrQ
.8
r
lR
Functional types of vessels
Amortization or compensatory vessels
Resistive vessels
Functional types of vessels
Sphincters
Capillars
Functional types of vessels
Volume vessels
Shunts
Arterial pressure
Determine the influences of factors:
1. cardiac – systolic volume, speed of blood ejection from the ventricles, heart beat; 2. vascular – elastisity of compensatory arteries, tone of resistive vessels, volume of volume vessels;
3. blood – volume of blood, viscosity, hidrostatic pressure of blood.
Kinds of arterial pressure
1. Systolic or maximal2. Side or absolute systolic3. Stroke (hemodynamic)4. Diastolic or minimal5. Pulse6. Result –
де Р – middledynamic pressure; Pd – diastolic pressure; Pc – systolic pressure.Ideal prwessure:Systolic = 102 + (0,6 · age) mm Hg Diastolic = 63 + (0,4 · age) mm Hg
,3
PdPcPdP
Index Level of arterial pressure
Systolic, mm Hg
Diastolic, mm Hg
Оptimal AP < 120 < 80
Normal AP < 130 <85
Higher-normal АP 130-139 85-89
Hypertension І degree Measure hypertension
140-159 90-99
140-149 90-94
Hypertension ІI degree 160-179 100-109
Hypertension of IIІ degree >180 >110
Isolated systolic hypertension Measure hypertension
>140 <90
140-149 <90
Classification of hypertension (1999)
Classification of hypertension (NHLBI,NHLBI, 2003).
Index Level of arterial pressure
Systolic, mm Hg Diastolic, mm Hg
Normal AP < 120 < 80
Prehypertension 120-139 Або 80-89
Hypertension І degree
140-159 Або 90-99
Hypertension ІІ degree
>160 Або >100
Determination of AP
Sphygmogram
Anacrota -а
Catacrota b
Incisura (i)
Addition wave с or secondary increase
Arterial pulse
1. А. radialis
2. A. ulnaris
3. A. brachialis
4. A. carotica communis
5. А. temporalis
6. A. femoralis
7. A. dorsalis pedis
8. A. tibialis posterior
6
1
2
3
5
4
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Basal tone of vessels. When arterial pressure suddenly increases local blood flow tends to increase. Than local blood flow decreases to normal level. Vessel walls are capable to prolonged tonic contraction without tiredness even at rest. Such a condition is supported by spontaneous myogenic activity of smooth muscles and efferent impulsation from autonomic nerve centers, which control arterial pressure. Partial state of contraction in blood vessels caused by continual slow firing of vasoconstrictor area is called vasculomotor tone.
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