CI/RCIS Study Material

Inf. wall affected

leads: II, III, AVF

Poss Cor affected: RCA

ant wall affected

leads: V2, V5

Poss Cor affected: LAD

septal/ant wall

leads: V1-V4

Poss Cor affected: LAD

ant/lat wall

leads: V2-V6, I, AVL

Poss Cor affected: LAD, Cx

lat wall

leads: V5, V6, I, AVL

Poss Cor affected: Cx

post wall

leads: V7-V9

Poss Cor affected: Cx

inferior wall

leads: II, III, AVF

Artery: RCA

lateral wall

leads: I, AVL, V5, V6

artery: Cx

septal wall

leads: V1, AVR

artery: RCA

anterior wall

leads: V2, V3, V4

artery: LAD

I

lateral

Cx

II

inferior

RCA

III

inferior

RCA.

AVR

septal

RCA

AVL

lateral

Cx

AVF

inferior

RCA

V1

septal

RCA.

V2

anterior/septal

LAD

V3

anterior

LAD

V4

anterior

LAD

V5

lateral/ant

Cx

V6

lateral/ant

Cx

gorlin constant (AO)

44.5

AVF calculation

CO (ml/min) /SEP (sec/min)

AVA calculation

AVF / 44.5 x sqrt mean gradient

Fick calculation

O2 consumption / (Hbg x constant x AO sat) - (Hgb x constant x PA sat) x 10

regurgitant fraction

CO (angio) - Co (thermo/fick) / Co angio

RF computations require comparing 2 different COs. Angiographic CO will have to be compared to either:

thermo or fick

EF calculation

SV/EDV

Cardiac Index Calculation

CO/BSA

angiographic CO (LV minute flow)

HR x SV / 1000 (for ml/min)

stroke volume

EDV - ESV

what is SV?

amount of blood pumped out by a ventricle with each beat

ejection fraction

SV/EDV

what is EF?

% of blood ejected out of ventricle w/ each contraction

what's another way to find EF?

EDV - ESV / EDV

cardiac index

cardiac output/Body surface area

what's stroke volume?

amount of blood ejected out of AO valve each time heart beats

what is normal SV?

70-100ml

end diastolic volume (EDV)

ventricles fill during diastole; measure of volume in V when full

end systolic volume (ESV)

ventricle contrasts & empties during systole; measure of volume LEFT in V after contraction

cm to inch

2.54 cm = 1 inch

mm to inch

25.4 mm = 1 inch

1 fr in mm

1/3 mm

2fr in mm

2/3 mm

3fr in mm

1mm

Fr size of catheter refers to

outer diameter

systemic vascular resistance

amount of work LV has to do to push blood into AO

pulmonary vascular resistance

amount of work RV has to do to push blood out into PA

resistance to blood flow thru systemic/pulmonary circulation is result of friction btwn:

flowing blood & vascular walls

principal factor affecting resistance

diameter of blood vessels

calculations are in _____ but report results are in ______

HRUs

ARUs

HRU

hybrid ressitance units (mmHg/L/min)

HRU aka

wood units

ARU

absolute resistant units (dynes/sec/cm^-5)

ARUs are _x higher than HRUs

80x (HRU x 80 = ARU)

resistance

mean pressure going into system - mean pressure coming out of system divided by CO

resistance formula

mean outflow press. - mean inflow press. / amount of blood flow per min

in systemic circ., blood goes out of heart into systemic system w/ mean ___ pressure (outflow) & returns w/ mean ___ pressure (inflow)

AO (out), RA (in)

SVR

mean AO - mean RA / CO

in pulm. circ., blood goes out of heart into PA w/ mean ___ pressure (outflow) & returns to heart w/ mean ____ (inflow)

PA (out), LA/PCWP (in)

PVR

mean PA - mean LA/PCWP / CO

Afib

chaotic eletrical activity in atria w/ organized p waves (quivering atria); irregular QRS

heart blocks

most commonly affect AV junction, impulse is either slowed or stopped @ AV junction

4 types of HB

1. 1st degree

2. 2nd degree T1 (Wenkebach)

3. 2nd degree T2 (Mobitz II)

4. 3rd degree (complete HB)