Week 6 - Cardiovascular and Peripheral Vascular Assessment Flashcards
Peripheral Vascular System
Made up of a series of vessels that carry fluids throughout our body:
- Arteries
- Veins
- Lymphatic
Function of Arteries (5)
- Carry oxygenated blood away from the heart
- High-pressure system
- Have fewer
- Vessel walls thicker and more tough- elastic and muscle fibers to withstand, adapt to and maintain pressure
- Have a ‘pump’ to keep blood moving
Arteries accessible during examination (9)
- temporal
- carotid
- brachial
- radial
- ulnar
- femoral
- popliteal
- dorsalis pedis
- posterior tibial
Function of Veins (5)
- Carry deoxygenated blood back to the heart
- Low-pressure system
- Have more
- Vessel walls are thinner and larger in diameter
- No pump, rely on 3 mechanisms to keep blood moving:
- contracting skeletal muscles
- pressure gradient
- intraluminal valves (no backflow)
Veins accessible during examination (close to skin’s surface) (9)
- external jugular
- internal jugular
- superficial arm
- deep arm
- femoral
- popliteal
- great saphenous
- small saphenous
- perforators
Artery in the neck
Carotid
Arteries in the arm (3)
- Radial
- Brachial
- Ulner
Arteries in the Leg (4)
- Femoral
- Popliteal
- Posterior tibial
- Dorsalis pedis
Vein in the Neck
Jugular
Veins in the leg (3)
- Great saphenous
- Small saphenous
- Great saphenous
Function of the Lymphatic System
Retrieving excess fluid from tissue spaces and returning to blood stream (like a sponge), in the capillary bed
- Return fluid back to venous system
- Forms major part of immune system
- Absorbs lipids from IT and transport fat soluble nutrients bac into venous circulation
Right lymphatic duct
Empties into right subclavian -
Drains the:
- right side of the head and neck
- right arm
- right side of thorax
- right lung/ pleural
- right side of heart
- right upper section of liver
Thoracic duct
- Drains rest of body
- Empties into left subclavian vein
Movement of lymph
Lymph flow is propelled by:
- Contracting skeletal muscles
- Pressure changes during breathing
- Contraction of the vessels themselves
Lymph Nodes
- Small oval clumps of lymphatic tissue located along intervals in the vessels
- Filter fluid before it is returned to the bloodstream (immune defense)
- Palpable
Location of nodes (4)
- Cervical nodes (neck)* palpable (should be movable and non-tender)
- Axillary nodes (armpits)
- Epitrochlear node (arm)
- Inguinal nodes (groin)
Developmental Considerations for Children and Infants
- Larger lymph nodes
- Palpable even when healthy
Considerations for Pregnancy
Hormonal changes (increased progesterone) cause vasodilation, resulting in drop in BP (2nd and 3rd trimester)
The growing uterus blocks drainage of certain veins, resulting in pooling of venous blood, causing:
Edema in the lower extremities, varicose veins, hemorrhoids
Considerations for Aging Adults
- Arteriosclerosis: Blood vessels become more rigid, thick, less elastic, resulting in increase in BP
- Enlargement of the calf veins, greater risk of venous pooling
- Loss of lymphatic tissue (fewer nodes and atrophy of nodes)
Subjective Assessment of PV (6)
PQRSTUAAA:
- Leg pain or cramps
- Skin changes on arms or legs
- Swelling in the arms or legs
- Lymph node enlargement
- Medications
- History of vascular problems?
Objective Assessment of PV - Arms (5)
- Colour, temperature, texture, turgor, lesions, scars, edema, clubbing
- Capillary refill
- Symmetry
- Pulses (on 4-point scale):
- Radial
- Ulnar
- Brachial - Epitrochlear lymph node (normally not palpable):
- Shake hands, with other hand reach under elbow into groove, feel for node-like structure
Objective Assessment of PV - Legs (5)
- Skin colour, hair distribution, venous pattern (flat, visible, not varicose) at standing, size, symmetry, skin lesions, ulcers
- Palpate for temperature
- Palpate inguinal lymph nodes
- Pulses (on 4-point scale):
- Femoral
- Popliteal
- Dorsalis pedis
- Posterior tibial - Asses for edema
Disorders of PV (2)
- Deep Vein Thrombosis (DVT)
2. Peripheral Arterial Disease (PAD)
Deep Vein Thrombosis (DVT)
- Clot in a deep vein, blood comes in from arteries but can’t go back up
- Warm, red, swollen
Peripheral Arterial Disease (PAD)
- Build-up of fatty substances in the wall of the artery (plaques)
- Pallor, coolness
Cardiovascular System
Consists of pump (heart) and connecting vessels
Diastole (2 stages)
Ventricles relaxing and filling with blood
Stage 1: Protodiastolic filling (passive filling)
- AV valves open, pressure in atria is higher than ventricles, so blood rushes in
Stage 2: Presystole/Atrial systole/Atrial kick (active filling)
- Occurs toward end of diastole
- Atria contract and push last bit of blood into ventricle
Systole (4)
- AV valves close (S1/lub)
- For a moment, all 4 valves are closed, ventricles are contracting against the closed vessels and pressure is building
- When pressure in ventricles is greater than in aorta and PA, the semilunar valves open and blood Is pumped from the ventricle and out through aorta and PA.
- Semi-lunar valves close (S2/dup)
Expected Heart Sounds (3)
- S1 (“Lup”)
- S2 (“Dup”)
- Split S2 (“Lup-T-Dup”)
Extra Heart Sounds (unexpected)
- S3
- S4
- Murmurs
- Bruits (Turbulent blood flow in a great vessel)
S1 heart sound
“Lup”
- Expected
- Occurs with closure of the AV valves
- Loudest at the apex
S2 heart sound
“Dup”
- Expected
- Occurs with closure of the SL valves
- Loudest at the base
Split S2 heart sound
“Lup-T-Dup”
- Expected
- When aortic valve closes significantly earlier than the pulmonic valve
- Gives an extra beat
- Can be heard on inspiration sometimes
S3 heart sound
Unexpected
- Heard during diastole (protodiastole)
- Occurs just after S2
- Physiologic
- Pathologic (ventricular gallop)
S4 heart sound
Unexpected
- Heard at the end of diastole during presytole
- Occurs just before S1
- Physiologic
- Pathologic (atrial gallop)
Murmurs
- A blowing or swooshing sound
- Signals turbulent blood flow
Physiologic conditions that may result in a heart murmur
- Increased velocity of the blood
- Decreased viscosity of the blood
- Structural defects in the valves or unusual openings in the chambers
Bruit
Turbulent blood flow in a great vessel
Conductivity of the heart
- Automaticity (contracts by itself independent from signals from rest of the body)
- SA node, initiates impulse, travels to:
- AV node, atria contract, then impulse travel to
- Bundle of His, branches out to
- Right and Left Bundle Branches, that contract ventricles
Pumping Ability of the heart
Preload=
Afterload=
Cardiac Output
The amount of blood being pumped by the heart per minute
CO = SV x rate
Stroke Volume
The amount of blood ejected from the heart
Preload
The length the ventricle must stretch just before contraction
Afterload
The pressure the ventricles must generate in order to open the valves and eject the blood
CV Developmental Considerations for Infants and Children (2)
- Physiologic murmurs due to openings in the heart that compensate for non-functional lungs
- Position of the heart in infants is higher and more horizontal until age 7
CV Developmental Considerations for Pregnant People (2)
- Blood volume increases 30-40% to compensate for growing fetus
- Increases stroke volume and CO
- Pulse rate increases 10-15bpm - BP drops slightly due to hormones (see PV assessment)
CV Developmental Considerations for Older Adults (4)
- Systolic BP increases (due to rigidity of arteries)
- Left ventricle wall thickens
- Increased prevalence of arrhythmias
- Increased incidence of cardiovascular disease, hypertension and heart failure
Foramen ovale
In infants, blood is rerouted through FO into atrial septum and then pumped through the aorta
Closes wtihin 1h of birth
Ductus arteriosus
In infants, blood is rerouted past pulmonary artery through this hole (DA) to the aorta
Closes within 10-15h of birth
Components of Subjective CV assessment (11)
PQRSTUAAA: 1. Chest pain/tightness 2. Back pain, indigestion 3. Dyspnea (difficulty breathing) 4. Orthopnea (needing to be upright to breathe properly) 5. Cough 6. Fatigue 7. Cyanosis/pallor 8. Edema Nocturia (urgent need to pee in the night)
- Current/past cardiac history
- Family cardiac history
- Personal habits
Components of Objective CV assessment (4)
Inspect, Palpate, Auscultate:
- Neck vessels: Carotid
- Precordium (anterior chest): Apical impulse
Percussion:
- Place finger on the 5th intercostal space on the left chest at the axillary line, percuss inwards to test for heart enlargement
Auscultate:
- Listen in a ‘Z’ pattern based on where sounds are heard best
Things to listen for in auscultation of the heart (5)
- Note the rate and rhythm
- Identify S1 (apex) and S2 (base)
- Assess S1 and S2 separately
- Listen for extra heart sounds
- Listen for murmurs
Describing murmurs (8)
- Timing: systole? diastole? always?
- Loudness (grade 1-6)
- Pitch/frequency
- Pattern
- Quality
- Location
- Radiation
- Posture (does changing position help?)
Grading loudness of murmurs
Grade 1= barely audible, only in a faint room and then with difficulty
Grade 2= clearly audible, but faint
Grade 3= moderately loud, easy to hear
Grade 4= loud, associated with a thrill
Grade 5= very loud, heard with one corner of stethoscope lifted off chest wall
Grade 6= loudest, heard with entire stethoscope lifted just off the chest wall