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Vascular Ultrasound
DMS Vascular lectures 11 and 12
57
Health Care
Professional
08/05/2011

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Term
INDICATIONS FOR LOWER ARTERIAL DUPLEX ULTRASOUND
Definition
CHRONIC ATHEROSCLEROSIS
ACUTE OCCLUSION
ANEURYSM
PSEUDOANEURYSM
ARTERIOVENOUS FISTULA
ASSESSMENT OF BY-PASS GRAFTS
Term
CAPOBILITIES OF ARTERIAL DUPLEX ULTRASOUND
Definition
IDENTIFY EXACT LOCATION OF STENOSIS OR OCCLUSION
DIFFERENTIATE BETWEEN HIGH GRADE STENOSIS AND TOTAL OCCLUSION
CONFIRM SUSPECTED ANEURYSM
DIFFERENTIATE BETWEEN ANEURYSM AND PSEUDOANEURYSM
IDENTIFY AV FISTULAS
EVALUATE BY-PASS GRAFTS
Term
TYPE OF TRANSDUCER AND PATIENT PREPRATION FOR LOWER EX ARTERIAL
Definition
TRANSDUCER: 5.0 or 7.0 MHz Linear (3.0 MHz for distal aorta and iliac arteries)
PATIENT PREP: NPO 8-12 hours if aorta and iliacs are to be examined; no prep if lower extremity arteries only
Term
PATIENT POSITION FOR LOWER EX ARTERIAL
Definition
SUPINE WITH HEAD ELEVATED, THE PATIENT’S BED MAY BE PLACED IN A REVERSE TRENDELENBERG POSITION. THIS WILL CAUSE THE BLOOD TO POOL IN THE VEINS OF THE LEG, THUS MAKING VISUALIZATION OF THE ARTERIES EASIER. +
Term
WHICH AXIS VIEW IS MORE DIAGNOSTIC IN EXTREMITY ARTERIAL
Definition
LONG AXIS VIEWS WITH DOPPLER WAVEFORM ANALYSIS MOST DIAGNOSTIC
Term
DESCRIBE NORMAL AND ABNORMAL ARTERIAL WAVEFORM
Definition
NORMAL
Triphasic waveform pattern from high resistance bed
NORMAL OR ABNORMAL
Biphasic waveform pattern may be normal or abnormal
ABNORMAL
Monophasic waveform pattern always abnormal
Term
IF SUSPICION OF 50% OR GREATER STENOSIS OBTAIN:
Definition
Prestenotic peak systolic velocity
Stenotic peak systolic velocity
Poststenotic waveform signals
Term
WHAT IS THE RATIO THAT INDICATES THE % OF STENOSIS
Definition
Prestenotic peak velocity compared to stenotic peak velocity and a ratio is calculated
Velocity increase of 100% over prestenotic velocity (2:1 ratio) = 50% diameter reduction
Velocity ratio of 4:1 = 75% or greater diameter reduction
Term
TREATMENTS FOR SEVERE STENOSIS
Definition
By-Pass surgery
Percutaneous Intervention
Angioplasty
Atherectomy
Local thrombolysis
Stent placement
Term
THROMBOLYSIS
Definition
THE BREAKDOWN OF BLOOD CLOTS BY PHARMACOLOGICAL MEANS
Term
BY-PASS GRAFTS
Definition
Purpose: search for abnormalities, impending occlusion, aneurysms, and to assess flow
Term
TYPES OF GRAFTS
Definition
Aortobifemoral
Femorofemoral (fem fem)
Axillofemoral
Femoropopliteal (fem pop)
Femorotibial or popliteal-tibial
Term
IMAGING TECHNIQUE FOR GRAFTS
Definition
Proximal Native Inflow artery
Proximal anastomosis
Mid Graft
Distal Anastomosis
Distal Native Outflow Artery
Term
THE MINIMUM RANGE OF VELOCITIES IN A GRAFT SHOULD BE:
Definition
THE PEAK SYSTOLIC VELOCITIES FOUND WITHIN THE GRAFT SHOULD BE GREATER THAN 40 CM/SEC. VELOCITIES OF LESS THAN 40 CM/SEC MAY INDICATE IMPENDING GRAFT FAILURE
Term
STENT PURPOSE
Definition
USED TO HOLD THE VESSEL OPEN
Term
DESCRIBE THE METHOD OF STENT PLACEMENT
Definition
Dilation of vessel with angioplasty balloon
Stent inserted within a catheter sleeve
Sleeve is removed
Stent expanded with balloon catheter
Term
WHAT ARE THE TWO MOST COMMON STENTS
Definition
Palmaz Stent (used with balloon angioplasty catheter)
Wallstent ( automatically expands)
Term
ANEURYSM
Definition
- dilation of all three layers of the arterial wall
Term
POPLITEAL ARTERY ANEURYSM
Definition
Most common of peripheral artery aneurysms
US can make diagnosis
Defined as diameter measurement of 2 cm or greater
Surgical intervention
Risk of embolus due to thrombus formation
Term
BLUE TOE SYNDROME
Definition
DISTAL EMBOLIZATION RELATED TO A POPLITEAL ARTERY ANEURYSM. THIS CONDITION IS CALLED BLUE TOE SYNDROME. +
Term
BAKER'S CYST
Definition
EXTRUSION OF SYNOVIAL FLUID POSTERIOR TO KNEE JOINT
Communicates with knee joint
May extend into calf, rarely thigh
Term
THE CAUSE OF BAKER'S CYST
Definition
Associated with rheumatoid arthritis or trauma
Term
DIFFFRENTIAL DIAGNOSIS OF BAKER'S CYST
Definition
popliteal artery aneurysm
Term
ARTERIAL ULCERS
Definition
arterial insufficiency caused by atherosclerosis
Term
ARTERIAL ULCER CHARACTERISTICS
Definition
Pale when legs elevated; red when legs are dependent
Deep
Even well circumscribed borders
Little bleeding or exudate
Skin cold to touch
Found on toes, outer ankle, & bony prominences
Term
Pseudo aneurysm
Definition
- blood flows in and out of area through a communication channel with an artery
IT IS A PULSATILE HEMATOMA
Term
interventional procedure for pseudo aneurysm
Definition
COMPRESSION OF THE PSEUDOANEURYSM WITH ULTRASOUND PROB
INVOLVE COMPRESSION OF THE COMMUNICATION CHANNEL UNTIL CLOTTING WITHIN IN THE CHANNEL TAKES PLACE. THIS MAY BE ACCOMPLISHED WITH TRANSDUCER PRESSURE, OR WITH A SPECIAL COMPRESSION DEVICE THAT MAINTAINS PRESSURE AT A SELECTED POSITION
Term
FEMORAL STICK
Definition
FEMORAL ARTERY BEING USED FOR CARDIAC CATHERIZATION AND CABG (CORONARY ARTERY BYPASS GRAFT) WHICH ,AY CAUSE PSEUDO ANEURYSM AND/OR HEMATOMA
Term
THE MOST DIAGNOSTIC PARAMETER IN THE DIAGNOSIS OF A PSEUDOANEURYSM
Definition
THE COMMUNICATION CHANNEL BETWEEN THE PSEUDOANEURYSM AND THE ARTERY
Term
“YIN YANG SIGN
Definition
THE COLOR IN THE “PULSATING HEMATOMA” IS RED AND BLUE, INDICATING THAT BLOOD IS FLOWING INTO AND OUT OF THE AREA. THIS IS CALLED THE “YIN YANG SIGN
Term
“TO , FRO” PATTERN ASSOCIATED WITH A PSEUDOANEURYSM MEANS
Definition
FLOW ABOVE AND BELOW THE BASE LINE, INDICATING MULTIDIRECTIONAL FLOW IN THE COMMUNICATION BETWEEN THE PSEUDO AND THE ARTERY
Term
ARTERIO VENOUS FISTULA (AV FISTULA)
Definition
Abnormal communication between an artery and vein
May be congenital or acquired
A femoral stick or other angiographic procedures may be the cause
Blood flow may be stolen from distal CIRCULATION
Term
POPLITEAL ARTERY ENTRAPMENT SYNDROME
Definition
COMPRESSION OF THE POPLITEAL ARTERY BY SURROUNDING MUSCULATURE
CALF CLAUDICATION SYMPTOMS AFTER RUNNING (not walking)
Term
GOLD STANDARD FOR DIAGNOSIS OF POPLITEAL ARTERY ENTRAPMENT SYNDROME
Definition
Digital Subtraction Angiography
Term
ARTERITIS
Definition
INFLAMMATION WITH THROMBOSIS OF THE WALLS OF THE ARTERIES
MAY AFFECT THE TIBIAL AND PERONEAL ARTERIES
Term
BUERGER’S DISEASE
Definition
+ BUERGER’S DISEASE (AKA: THROMBOANGIITIS OBLITERANS) IS A TYPE OF ARTERITIS. IT AFFECTS YOUNG MEN BETWEEN THE AGES OF 20 AND 40 YEARS WHO SMOKE OR CHEW TOBACCO.
Term
SYMPTOMS OF BUERGER'S DISEASE
Definition
SYMPTOMS INCLUDE PAIN OR TENDERNESS IN THE AFFECTED REGION, NUMBNESS OR TINGLING OF THE LIMBS, SKIN ULCERS OF THE FINGERS OR TOES, LESSENED PULSES, DISCOLORATION, TWO OR MORE LIMBS AFFECTED, AND SYMPTOMS MAY WORSEN WITH EXPOSURE TO COLD TEMPERATURES OR EMOTIONAL STRESS.
Term
DIAGNOSIS OF BUERGER’S DISEASE
Definition
BUERGER’S DISEASE IS DIAGNOSED THROUGH AN ANGIOGRAM OR ARTERIOGRAM OF THE UPPER AND LOWER EXTREMITIES, OR THROUGH DOPPLER ULTRASOUND EXAMINATION. +
Term
WHAT IS ARTERIAL STEAL SYNDROM AND ITS SYMPTOMS
Definition
THIS MAY CAUSE ISCHEMIC SYMPTOMS (SUCH AS COOLNESS OF THE LIMB OR PAIN), A REDUCTION OF DISTAL RESISTANCE IN THE ARTERY, AND IF SEVERE ENOUGH, SOME DEGREE OF HEART FAILURE. A THRILL (VIBRATION) IS OFTEN PRESENT WITH AN AV FISTULA. +
Term
AORTIC ARCH ANATOMY
Definition
THE FIRST BRANCH ON THE RIGHT IS THE INNOMINATE ARTERY, WHICH BRANCHES INTO THE RIGHT COMMON CAROTID ARTERY AND THE SUBCLAVIAN ARTERY. THE NEXT BRANCH IS THE LEFT COMMON CAROTID ARTERY. THE THIRD BRANCH ARISING DIRECTLY FROM THE ARCH IS THE LEFT SUBCLAVIAN ARTERY. +
Term
BRANCHES OF AXILLARY ARTERY
Definition
SUPERIOR ARTERY
THORACIC ARTERY
THORACOACROMIAL ARTERY
LATERAL THORACIC ARTERY
SUBCAPSULAR ARTERY
ANTERIOR AND POSTERIOR HUMERAL ARTERY
THORACODORSAL ARTERY
Term
THE SUPERFICIAL PALMAR ARCH IS:
Definition
THE SUPERFICIAL ARCH IS FORMED MAINLY BY THE ULNAR ARTERY AND IS JOINED BY A SUPERFICIAL BRANCH OF THE RADIAL ARTERY.
Term
THE DEEP PALMAR PALMAR ARCH
Definition
THE DEEP PALMAR ARCH IS FORMED MAINLY BY A DEEP BRANCH OF THE RADIAL ARTERY AND IS COMPLETED BY THE DEEP BRANCH OF THE ULNAR ARTERY. +
Term
SIGNS & SYMPTOMS UPPER EXTREMITY ARTERIAL DISEASE
Definition
WEAKNESS OF THE ARM OR HAND WITH EXERCISE
REDUCED OR ABSENT PULSES
WEAKNESS, PAIN, OR NUMBNESS IN HAND RELATED TO POSITION
ISCHEMIA OF THE FINGERS
COLD SENSITIVITY
Term
UPPER EXTREMITY ARTERIAL DISEASE
Definition
ATHEROSCLEROTIC ARTERIAL DISEASE
THROMBOEMBOLISM
ARTERITIS
RAYNAUD’S SYNDROME
THORACIC OUTLET SYNDROME
Term
RAYNAUD’S SYNDROME
Definition
RAYNAUD’S SYNDROME IS A VASOSPASTIC DISORDER THAT AFFECTS THE UPPER EXTREMITY ARTERIES
Term
SYMPTOMS OF RAYNAUD'S DISEASE
Definition
IN RAYNAUD’S SYNDROME, SYMPTOMS OF DIGITAL ISCHEMIA ARE PRESENT. THE PATIENT MAY HAVE PALLOR, CYANOSIS, NUMBNESS, OR PAIN IN THE FINGERS. THESE SYMPTOMS ARE CAUSED BY EPISODES INVOLVING DIGITAL VASOSPASMS.
Term
2 TYPES OF RAYNAUD'S DISEASE
Definition
IN PRIMARY RAYNAUD’S, THE ARTERIES ARE COMPLETELY NORMAL AND THE DISORDER IS PURELY VASOSPASTIC IN NATURE.IN SECONDARY RAYNAUD’S, THE VASOSPASMS ARE ASSOCIATED WITH AN UNDERLYING SYSTEMIC DISORDER (AUTOIMMUNE OR CONNECTIVE TISSUE).
Term
PRIMARY RAYNAUD’S SYNDROME
Definition
PRIMARY RAYNAUD’S SYNDROME IS A SERIES OF VASOSPASTIC ATTACKS. THIS TYPE IS NOT ASSOCIATED WITH ANY UNDERLYING DISEASE. THE VESSELS OF THE DIGITS CONSTRICT IN RESPONSE TO COLD TEMPERATURES OR EMOTIONAL STRESS. ONCE AN ATTACK BEGINS, A PERSON MAY EXPERIENCE THREE PHASES OF CHANGES IN SKIN COLOR. + THE SKIN FIRST CHANGES TO WHITE (PALLOR), + THEN TO BLUE (CYANOSIS), + FINALLY TO RED (RUBOR) AS THE BLOOD RETURNS TO THE DIGITS. DURING THE ATTACK, THE FINGERS (OR TOES) MAY FEEL COLD AND NUMB, THEN THROB AND TINGLE WHEN BLOOD FLOW RETURNS. + THIS CONDITION IS MOST COMMON IN YOUNG WOMEN + AND STARTS BETWEEN THE AGES OF 15 AND 25 YEARS OF AGE. TREATMENT IS CONSERVATIVE, AS DAMAGE TO THE ARTERIES AND TISSUES DOES NOT OCCUR.
Term
SECONDARY RAYNAUD’S
Definition
DUE TO CONDITIONS ASSOCIATED WITH ABNORMAL VESSEL WALLS OR INCREASED VISCOSITY OF BLOOD
CAUSES INCLUDE CONNECTIVE TISSUE DISEASE, BLOOD DISORDERS, ARTERIAL CAUSES, NEUROVASCULAR DISORDERS, DRUG RELATED
MAY BE UNILATERAL, PATCHY, AND ASYMMETRICAL
SYMPTOMS MAY BE MORE SEVERE
Term
TWO TYPES OF ARTERITIS
Definition
TAKAYASU’S ARTERITIS
BUERGER’S DISEASE
Term
TAKAYASU’S ARTERITIS
Definition
TAKAYASU’S ARTERITIS IN FOUND PRIMARILY IN WOMEN IN THEIR TWENTIES OR THIRTIES. IT IS RELATED TO AN AUTOIMMUNE DISORDER AND AFFECTS THE AORTIC ARCH BRANCHES.
Term
THORACIC OUTLET SYNDROME
Definition
THE THORACIC OUTLET IS THE SPACE BETWEEN THE RIB CAGE AND THE COLLAR BONE. + THORACIC OUTLET SYNDROME IS INTERMITTENT PAIN, NUMBNESS, TINGLING, WEAKNESS, OR COLDNESS IN THE UPPER EXTREMITY CAUSED BY COMPRESSION OF EITHER THE NERVES OR BLOOD VESSELS IN THE THORACIC OUTLET.
Term
WHAT CAN BE THE RESULT OF TOS
Definition
TOS MAY LEAD TO THROMBOSIS, FIBROSIS, AND ANEURYSM OF THE SUBCLAVIAN AND/OR AXILLARY ARTERY. PHYSICAL THERAPY IS THE USUAL TREATMENT, WITH SURGERY AS A LAST RESORT.
Term
THORACIC OUTLET TESTING
Definition
PERFORMED WHEN PATIENT COMPLAINS OF ARM PAIN OR NUMBNESS THAT IS POSITION RELATED
USED TO RULE OUT COMPRESSION OF SUBCLAVIAN OR AXILLARY ARTERIES
PERFORM BASELINE STUDY
Term
WHAT IS BASELINE STUDY FOR TOS TESTING
Definition
Segmental systolic pressures at arm and forearm bilaterally
Obtain pulse volume recordings or CW waveforms from axillary, brachial, radial, and basilic arteries
OBTAIN WAVEFORMS WITH PATIENT IN DIFFERENT POSITIONS
MOST IMPORTANT TO EVALUATE THE PATIENT IN THE SYMPTOMATIC POSITION
Term
ALLEN TEST
Definition
TESTING FOR PATENCY OF THE PALMAR ARCH IS REQUIRED PRIOR TO RADIAL ARTERY HARVEST FOR CORONARY ARTERY BYPASS SURGERY, OR PRIOR TO THE PLACEMENT OF A HEMODIALYSIS GRAFT OR FISTULA PLACEMENT
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