Cardiopulmonary Flashcards
What’s the preload?
Amount of blood in ventricle at end of diastole (LVEDV)
–> RIGHT BEFORE CONTRACTION
What’s the afterload?
Force the LV must generate to overcome aortic pressure
Stroke volume
Amount of blood ejected with each contraction
Ejection fraction
% of blood ejected from total volume of ventricle
Normal= 55-75%
Normal CV response to exercise
O2 up linearly
HR up linearly
SBP up linearly
DBP limited changes +-10mmHg
Tidal Volume and Resp rate up
Isolated UE vs. LE exercise response
UE>LE response in HR/BP in exercises
-> more mass in LE + UE exercises causes vasoconstriction in LE-> incr. HR/BP
Abnormal Responses to Exercise
(Yellow Flag)
Moderate to severe/increasing angina
Marked dyspnea 3-4/4
Dizziness/lightheadedness/ ataxia
Cyanosis/ excessive fatigue/ claudication/ blunted BP response/ hypertensive BP(>240/10)/ SBP drop of 10-15/significant EKG change
Normal Vagus Nerve activation causes
Parasympathetic inner action
Decrease BP/HR
Abnormal causes for Vagus Nerve activation
Valsalva Maneuver
Carotid sinus massage
Excessive Pain (shock)
“If it’s less than 8, don’t ambulate”, refer to?
Hemoglobin
“Tri before you bi”, refers to
Tricuspid and bicuspid valve
Normal Heart Rate newborn
120-140
Normal Heart rate >18years
60-100
S1 sound
=normal Heart sound
AV valve closure (=onset systole)
S2 Heart sound
= normal
Semilunar valve/pulmonary-aortic closure
= Onset diastole
S3 sound
=abnormal
Extrasound in early diastole
CHF/Athletes
S4 heart sound
= 2nd abnormal heart sound
I’m late diastole (atrial gallop)
- MI or hypertension
Elevated Blood Pressure
120-129 AND <80
Stage 1 Hypertension
130-139 OR 80-89
Stage 2 Hypertension
> 140 OR >90
Normal Clotting time
INR = 0,8-1,2
Therapeutic clotting time
2.0-3.0
Normal white blood cell count
5.0-10.0
Leukocytosis
Increased WBC count
>11
Infections, leukemia, sickle cell…
Leukopenia
Low WBC
<4.0
Viral inf./chemo/ autoimmune diseases
Neutropenia
Lowest WBC count
<1,5
0,5-1 = moderate
<0,5 = severe
Radiation/ infections/stem cell disease
Platelet counts
Normal 140-440
Low <150 risk of bleeding
High >450 risk of clotting
Hemoglobin normal
Normal 15
Male 14-17
Female 12-16
Increased Hemoglobin can be caused by?
Burns, COPD, CHF, Severe dehydration
Decreased Hemoglobin/Anemia can cause ?
Blood cell destruction
Hematocrit normal
~45
Male 42-52%
Female 37-47%
Which blood count abnormality can cause Orthostatic Hypotension?
A low hematocrit 25%
A Pt with increased Hematocrit can be at risk for?
Spontaneous blood clotting
>60%
When is Cardiac Rehab indicated?
Stable angina
Stable post-MI
CABG
Heart transplant
Valve surgeries
Stable heart failure
PAD,CAD