gesamtpräsentation (ppt) - powerpoint presentation
TRANSCRIPT
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Atherothrombosis Management in Practice – Clinical Cases
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Clinical Case One
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Clinical Case One
Patient:
• JM: male, 50 years old
• Occupation: postman
clinical case one
Presenting complaint:
• Last 6 months – left calf pain on walking 300 m (two blocks)
• Pain is relieved by rest
• No pain at rest
• No other complaints
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Diagnosis
What is your diagnosis?
clinical case one
2. Peripheral neuropathy
3. Venous disease
4. Intermittent claudication
5. Sciatic pain (sciatic nerve compression)
6. None of the above
1. Arthritis of the hip
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Physical Examination (I)
On presentation:
• General status: excellent
• Heart and lungs: no abnormalities
• BP: 138/88 mmHg
• Pulse: regular 88/min
clinical case one
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Electrocardiogram (ECG)
clinical case one
• ECG Q-waves suggest an old inferior infarction
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Physical Examination (II)
Right limb:
• Bruit over right femoral artery
• Artery pulsations present, including in foot arteries
Left limb:
• Bruit over left femoral artery
• Femoral artery pulsations present in groin
• No pulsations in popliteal or distal pulses
clinical case one
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Investigation (I)
What is your next step in light of JM’s condition?
clinical case one
2. Measure ankle pressure
3. Duplex scan arteries of the lower limbs
4. Perform contrast arteriography
1. Reassure JM: nothing else to be done
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Pressure gradients:
• Left ankle 80/138 (index = 0.58)
• Right ankle 104/138 (index = 0.75)
Investigation (II)
clinical case one
What treatment does JM require now?
2. Drug therapy
3. Exercise training
4. Drugs and training
1. No treatment
5. Interventional treatment (PTA, vascular surgery)
4. Some other treatment
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Treatment (I)
Which medication would you consider?
clinical case one
2. Dipyridamole
3. Ticlopidine
4. Clopidogrel
5. Cilostazol
6. One of pentoxifylline, buflomedil, or naftidrofuryl
1. ASA
7. A combination of drugs
8. Some other drug
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Follow-up (I)
On discharge:
• Training program and low-dose ASA (100 mg o.d.)
clinical case one
4 months later:• Claudication improved but did not disappear
• JM developed a transient ischemic attack (TIA) with weakness in the left arm
• Bruit heard over right carotid artery
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Investigation (III)
How would you approach the TIA problem?
clinical case one
2. Invasive arteriography
3. Nuclear magnetic resonance (NMR) angiography 4. Brain computed tomography (CT) scan
5. Duplex and brain CT scans
6. None of these
1. Duplex scan of the carotid arteries
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Imaging Results (I)
clinical case one
Right carotid:
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Imaging Results (II)
clinical case one
Left carotid:
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Imaging Results (III)
clinical case one
Velocity pattern:
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Treatment (II)
How would you treat the TIA?
clinical case one
2. Angioplasty and, if appropriate, stenting of the right carotid artery
3. Continue ASA therapy alone
4. Replace ASA with clopidogrel
5. Prescribe a combination of ASA and clopidogrel
6. None of these
1. Endarterectomy
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Follow-up (II)
1 year later:
• JM is doing fine
• Minor claudication remains
• No neurologic symptoms
• Clopidogrel 75 mg o.d.
clinical case one
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Clinical Case Two
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Clinical Case Two
Patient:
• KK: male, 58 years old
Presenting complaint:
• “My right calf cramps whenever I walk a quarter of a mile uphill”
• Symptom present: 2 months
clinical case two
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Background
clinical case two
KK medical history:
• Myocardial infarction (MI) at age 53
• Hypertension: 8 years
• Type II diabetes mellitus: 4 years.
• KK smoked 2 packs/day for 35 years
• Medications include: captopril and glyburide (glibenclamide)
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Physical Examination (I)
clinical case two
On presentation:
• Height: 5’ 8" (1.72 m)
• Weight: 186 lb (84.4 kg)
• BP: 164/100 mmHg
• Pulse: 84 bpm
• Left carotid bruit
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Physical Examination (II)
clinical case two
On presentation:
• Lungs: clear to palpation and auscultation
• Heart: S4, no murmurs
• Abdomen: right lower quadrant bruit, no masses
• Extremities:
– diminished right femoral pulse
– absent right popliteal and pedal pulses
– normal left femoral, popliteal, and pedal pulses
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Laboratory results:
Investigation (I)
clinical case two
• Glucose: 204 mg/dL [11.3 mmol/L]
• HbA1C: 9.8%
• Total cholesterol: 272 mg/dL [7.0 mmol/L]
• Low-density lipoprotein (LDL) cholesterol: 184 mg/dL [4.7 mmol/L]
• High-density lipoprotein (HDL) cholesterol: 38 mg/dL [0.9 mmol/L]
• Triglycerides: 250 mg/dL [2.8 mmol/L]
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• Liver function tests: normal
• Hct: 48%
• White blood cells: 5,300/µL
• Platelets: 190,000/µL
Laboratory results:
Investigation (II)
clinical case two
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• In summary, KK has systemic atherothrombosis
• He has multiple clinical manifestations of this problem and multiple risk factors, including:
Diagnosis
What are the relevant diagnoses?
clinical case two
– coronary artery disease (prior MI)
– peripheral arterial disease
– hypertension
– Type II diabetes mellitus
– carotid bruit (asymptomatic)
– hypercholesterolemia
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Investigation (III)
Which one of the following tests should be considered to further evaluate PAD?
2. Segmental pressure measurements
3. Pulse-volume recording
1. Magnetic resonance arteriogram
4. Duplex ultrasound of the leg
5. Contrast arteriogram
clinical case two
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Right (mmHg) Left (mmHg)
Arm 164 160
Upper thigh 144 170
Lower thigh 142 168
Calf 110 166
Ankle 88 164
Ankle-brachial 0.51 1.00index (ABI)
Investigation (IV)
Segmental systolic pressure measurements:
clinical case two
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Investigation (V)
Which test is NOT indicated at this time?
2. Dipyridamole MIBI
3. Cardiac catheterization
1. Treadmill exercise test
4. Carotid ultrasound
5. Abdominal ultrasound
clinical case two
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• Risk factor modification – treatments include:
Treatment (I)
What treatment should be initiated to reduce potential cardiovascular events?
• Antiplatelet therapy – treatments include:
clinical case two
– smoking cessation – statin – fibric acid derivative – insulin/oral hypoglycemic agent – antihypertensive agent
– ASA– clopidogrel
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Treatment (II)
What is the most effective initial strategy to relieve symptoms of claudication?
2. PTA
3. Vascular surgery
1. Exercise rehabilitation
4. Cilostazol
5. Naftidrofuryl
clinical case two
6. Pentoxifylline
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• Intensified diabetes Rx, so that HbA1C < 7%
• Statin Rx
• No renal artery stenosis, therefore hypertension managed with pharmacotherapy
• Smoking cessation program
• Clopidogrel 75 mg o.d.
• Exercise rehabilitation program
Treatment (III)
Treatment strategy:
clinical case two
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Follow-up
After 3 months:
clinical case two
• KK able to walk distance of half a mile
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Clinical Case Three
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Clinical Case Three
Patient:
• VM: male, 62 years old
• Occupation: retired
clinical case three
Background:
• Diabetes and hypertension
• No smoking
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History
VM medical history:
• CABG in 1985
• Several episodes of hospitalization for congestive heart failure in the past few months
• Left knee pain with walking, relieved with stopping
• No chest pain or dyspnea with exertion
• Episode (< 5 min) right facial numbness, 2 weeks prior to presentation
clinical case three
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Referral details:
• Lateral ischemia with NSVT at a low workload on thallium stress test
• 100% proximal occlusion of the LAD, Lat Cx and RCA on cardiac catheterization
• Patent grafts, but severe diffuse disease beyond touchdown of the three grafts
• 75% stenosis beyond the anastomosis of the SVG to Lat Cx
Referral
clinical case three
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Physical Examination (I)
clinical case three
On referral:
• BP: 170/95 mmHg
• Heart rate: 78 bpm
• Respiratory rate: 12 bpm
• Corpulence: mildly obese
• Head, eye, nose and throat (HEENT): bilateral carotid bruits
• Lungs: clear to auscultation
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Physical Examination (II)
clinical case three
On referral:
• Heart: regular rhythm and rate, no S3, 2/6 HSM at apex
• Abdomen: no bruits, and no pulsatile mass
• Extremities: distal pulses 2+ bilateral
• Neurologic exam: intact in detail
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Medication
clinical case three
Current:
• Furosemide: 100 mg o.d.
• Nifedipine XL: 90 mg o.d.
• Atenolol: 100 mg o.d.
• Isosorbide mononitrate: 120 mg o.d.
• ASA: 325 mg o.d.
• Glipizide XL: 10 mg o.d.
Allergies:
Penicillin, captopril, and shellfish
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clinical case three
• Blood urea nitrogen: 22 mg/dL
• Creatinine: 1.3 mg/dL
• Glucose: 278 mg/dL
• Hemoglobin: 14 g/dl
• Low-density lipoprotein (LDL) cholesterol: 140 mg/dL
• High-density lipoprotein (HDL) cholesterol: 40 mg/dL
Laboratory results:
Investigation (I)
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clinical case three
• Normal sinus rhythm at 70
• Left ventricular hypertrophy
• Small inferior Qs
ECG:
Investigation (II)
• Mild cardiomegaly
Chest X-ray:
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Treatment (I)
What is your next step?
2. Urgent bypass surgery
3. Urgent bypass surgery, plus transmyocardial revascularization
4. Referral for heart transplantation
1. Urgent angioplasty
clinical case three
5. None of the above, need more information
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In this case, what are the symptoms of knee pain most likely be consistent with?
Diagnosis (I)
2. Gout
3. Claudication
4. Spinal stenosis
1. Arthritis
5. None of the above
clinical case three
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What is the most likely cause of the right facial numbness?
Diagnosis (II)
2. Stroke
3. Seizure
4. Neuropathy
1. Transient ischemic attack (TIA)
5. None of the above
clinical case three
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What are the appropriate studies to order?
Investigation (III)
2. Echocardiography (ECHO)
3. Pulse volume recordings (PVRs)
4. Answer 1 and 2
1. Carotid ultrasound
5. Answers 1, 2 and 3
clinical case three
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Investigation (IV)
• ECHO
– LVH with diastolic dysfunction
– LVEF of 45% with 2+ mitral regurgitation
– moderate/lateral hypokinesis
• Head CT and PVRs at rest
– normal
• Carotid ultrasound
– severe stenosis of the LICA
Non-invasive studies:
clinical case three
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What is VM’s heart failure most likely to be due to?
Diagnosis (III)
2. Mitral regurgitation
3. Diastolic dysfunction
4. All of the above
1. Systolic dysfunction
5. None of the above
clinical case three
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Treatment (II)
How should VM’s carotid stenosis be addressed?
2. Urgent carotid angiography
3. Increasing the dose of ASA
4. Replacing ASA with clopidogrel
5. Answers 2 and 4
6. All of the above
1. Urgent carotid endarterectomy
clinical case three
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Do the normal PVRs exclude the diagnosis of PAD?
Diagnosis (IV)
2. No
1. Yes
clinical case three
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Left renal artery stenosis
clinical case three
Investigation (V)
Right renal artery stenosis
Invasive studies:
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clinical case three
Investigation (VI)
Left SFA stenosis LICA stenosis
Invasive studies:
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Investigation (VII)
Analysis:
clinical case three
• Abnormal angiography was performed revealing:
– bilateral renal artery stenosis
– left SFA stenosis
– 95% LICA stenosis
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Treatment (III)
What is the appropriate management strategy?
clinical case three
3. Carotid stenting
4. All of the above
5. None of the above
1. Bilateral renal artery stenting
2. Superficial femoral artery PTA
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What is the appropriate management strategy?
clinical case three
• VM underwent stenting:
– left and right renal arteries
– left SFA
– carotid (following evaluation by multidisciplinary team)
Treatment (IV)
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Left renal artery stent
clinical case three
Follow-up (I)
Right renal artery stent
Invasive management:
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Left superficial femoral artery stent
clinical case three
Follow-up (II)
Invasive management:
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Treatment (V)
What is the most appropriate medical management?
2. Starting clopidogrel
3. Starting a statin
4. Starting an ACE inhibitor
5. All of the above
1. Continuation of ASA
clinical case three
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Treatment (VI)
On discharge:
• ASA: 325 mg o.d.
• Clopidogrel: 75 mg o.d.
• Atorvastatin: 10 mg o.d.
• Ramipril: 2.5 mg o.d. (increased after BP evaluation at 1 week)
• Diuretic: discontinued
• Nitrate: continued (with possibility of future dose increase)
• Beta blocker: continued (with possibility of future dose increase)
clinical case three
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Treatment (VII)
Lifestyle program:
• Maintain a log book of blood glucose values
• Start walking program
Additional interventions proposed:
• LICA stenting with emboli protection
clinical case three
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LICA stent
clinical case three
Follow-up (III)
On discharge:
• Successful LICA stent
• Uneventful discharge on following day
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clinical case three
Discussion
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Clinical Case Four
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Clinical Case Four
Patient:
• FB: male, 64 years old
clinical case four
Presenting complaint:
• "My right side went weak and numb for 10 minutes, and my speech was slurred. This happened about five hours ago"
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Background
FB medical history:
• Smoked 1 pack/day for 40 years
• Hypertension: 10 years
• Myocardial infarction (MI) at age 58
• Minor stroke at age 60, while taking ASA
• Medications include:
– ASA
– atenolol
– captopril
– ticlopidine tried following his stroke, but was discontinued because of persistent diarrhea
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On presentation:
• Height: 6’ 0" (1.83 m)
• Weight: 196 lb (89.0 kg)
• BP: 154/88 mmHg
• Pulse: 68 bpm and regular
• Carotid arteries: no bruits
• Heart: no murmurs
• Neurologic: post stroke 4 years ago– slight left-sided clumsiness and hyperreflexia
– dysarthria
– otherwise, normal
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Physical Examination (I)
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Laboratory results:
• Glucose: 94 mg/dL [5.2 mmol/L]
• Total cholesterol: 200 mg/dL [5.2 mmol/L]
• Low-density lipoprotein (LDL) cholesterol: 135 mg/dL [3.5 mmol/L]
• High-density lipoprotein (HDL) cholesterol: 30 mg/dL [0.8 mmol/L]
• Triglycerides: 250 mg/dL [2.8 mmol/L]
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Investigation (I)
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Investigation (II)
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Laboratory results:
• Liver function tests: normal
• Blood urea nitrogen: normal
• Hct: 47%
• White blood cells: 6,300/μL
• Platelets: 250,000/μL
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Diagnosis
• In summary, FB has multi-system atherosclerosis
• He has multiple clinical manifestations of this problem and multiple risk factors, including:
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What are the relevant diagnoses?
– hypercholesterolemia
– hypertension
– coronary artery disease (prior MI)
– cerebrovascular disease (prior stroke and new transient ishemic attack [TIA])
– overweight
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Investigation (III)
What is the most appropriate diagnostic test, to exclude a small intracerebral hemorrhage, a brain tumor, or other brain disease masquerading as a TIA?
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2. Magnetic resonance (MR) scan
3. Contrast arteriogram
1. Computed tomography (CT) scan
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clinical case four
CT scan
Investigation (IV)
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Investigation (V)
Which test(s) are appropriate to further evaluate this patient's cerebral circulation?
2. Magnetic resonance arteriography (MRA) of the cervical arteries
3. Ultrasound or MRA of the cervical and intracranial arteries
4. Intra-arterial contrast arteriography
5. All of the above
1. Ultrasound of the cervical arteries
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clinical case four
MR angiogram
Investigation (VI)
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Investigation (VII)
Which of the following tests should be considered to further evaluate FB’s heart and aorta, as sources of embolism?
2. Conventional echocardiogram
3. Transesophageal echocardiogram (TEE)
4. TEE with bubble contrast
5. Contrast aortogram
6. All of the above
1. Holter monitor
7. Answers 1 and 2
8. All except 5
clinical case four
9. None of the above
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Treatment (I)
What is the appropriate treatment for this patient?
clinical case four
2. Antihypertension Rx
3. Statin Rx
4. Antiplatelet therapy
1. Smoking cessation program
5. All of the above
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Treatment (II)
Which of the following antiplatelet therapies is the most appropriate in this case?
2. Clopidogrel
3. ASA
4. ASA and dipyridamole
1. Ticlopidine
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Disclaimer
These clinical patient cases represent model cases, expressing the views of the authors, only. All patients should be evaluated based upon their personal clinical history.
The slide kit has been prepared for medical and scientific purposes, and cannot be considered as an inducement to use clopidogrel in non-registered indications.
Neither Sanofi-Synthélabo nor Bristol-Myers Squibb recommends the use of clopidogrel in any manner inconsistent with that described in the full prescribing information.