Cardiology Flashcards

1
Q

DRILL = List CV RFs to ask for in history

A

Demographic =

- Age 
- Gender (male)
- FHx
- ATSI

Co-morbidities =

- Chronic inflammatory state (CTD / HIV etc)
- CKD (particularly proteinuria)
- Post transplant 
- Chronic steroid exposure 
- HTN
- Dyslipidaemia
- DM

Lifestyle =

- Weight / diet
- Exercise 
- Smoking 
   - ETOH
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2
Q

What is the criteria for MetS?

A

MetS Criteria =

	- Elevated WC 
		○ Men >94
		○ Women >80
	- PLUS 2 of 
		○ High triglycerides
		○ Low HDL
		○ Impaired glucose tolerance
		○ HTN

*International Diabetes Federation

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3
Q

Is this patient a candidate for bariatric surgery? Discuss

e.g. Josephine G

A

Indications =

- BMI >40
- BMI >35 with obesity-related co-morbidities
- Patient must be willing and understand risks 

Benefits =

- Improves CV risk factors and T2DM 
- Can lead to significant weight loss to then markedly improve function and QoL

Important Considerations to address pre-operatively =

- Patient's expectations of surgery 
- Addressing psychological factors including disturbed eating habits
- Ensuring adequate social supports 
Contraindications = 
	- Untreated psychiatric illness 
	- Current substance use
	- Prohibitive operative risk
		○ Anaesthetic assessment 
		○ Review respiratory and cardiac function / OSA
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4
Q

What are some medications which promote weight gain and can worsen obesity?

A

Insulin / Sulfonylureas

Steroids

Atypical antipsychotics and clozapine

OCP

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5
Q

DRILL =

List your dietary history

A

Dietary History =

- Number of meals per day and frequency of 
      snacks
- Content of meals 
- Prevalence of takeaway / soft drinks / refined 
      sugars
    - Barriers to healthy diet (finances / rural / 
      depression)
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6
Q

DRILL =

List your obesity Hx

A
  • Definition
    • Duration / onset
    • RFs
      ○ FHx
      ○ Co-morbidities (mood / decreased mobility)
      ○ Exacerbating medications (Insulin, antipsychotics, steroids)
    • Dietary Hx as above (summarised)
    • Interventions / Mx
      ○ Diets
      ○ Exercise programs (and barriers to this)
      ○ Psychology
      ○ Bariatric surgery
    • Complications
      ○ MSK
      § OA / gout
      ○ CV
      § IHD
      § HF / AF
      ○ Resp
      § OSA
      § OHS
      ○ GIT
      § NASH
      ○ Psych
      § Depression
    • IMPACT
      • Insight
    • Don’t forget to include other CV RFs
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7
Q

What are some HIV medications which contribute to CV risk?

A

Protease Inhibitors =

  • Ritonavir
  • Darunavir
  • Lopinavir

Abacavir
- Nucleoside Analog Reverse Transcriptase Inhibitor (NRTI)

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8
Q

How much weight can one expect to lose with lifestyle measures alone?

A

`5-7%

This still has been shown to have health benefits

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9
Q

How would you manage this person’s obesity?

A

Obesity Management Spiel

- Assess current status 
	○ Weight, WC
	○ Other CV RFs -> HTN, lipids, DM
- Exclude secondary causes
	○ Thyroid
	○ Cushings 
	○ PCOS
- Goals 
	○ To reduce weight to reduce CV risk and other Cx, in order to improve Fx and QoL
	○ Start out by SMART goal setting with patient 
- Cornerstone of management is going to be regular follow up to assess progress and address barriers 

Management options =
- Lifestyle measures will be the foundation of management in order to achieve sustainable weight loss
○ Dietary advice
§ Low fat, hypocaloric -> Dietician input to create meal plan
§ Focus on problem areas e.g. Soft drinks
○ Exercise
§ 150 minutes of exercise per week (walking is good)
§ Aerobic + resistance training for CV health and strengthening
○ Behavioural modification
§ Focusing on stimulus control and self-monitoring, to modify eating behaviours
§ Psychology input may be useful here, particularly if concurrent depression
- Pharmacological therapy is a useful adjunct for severe obesity, but cannot be used in isolation
a. Liraglutide (GLP-1 agonist) -> daily injection. EXPENSIVE. Can cause GI upset
b. Orlistat -> GI upset can make it difficult to tolerate
c. Combination Phentermine/Topiramate -> off label so is expensive, can cause insomnia/sympathomimetic effects
- Surgical is a reasonable consideration to achieve significant weight loss, but must be carefully considered with multidisciplinary team assessment prior
○ Roux-en-Y (more efficacious) -> restrictive and malabsorptive
○ Gastric Sleeve (safer) -> primarily restrictive but causes hormonal changes that decrease hunger
- Address other CV RFs

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10
Q

What is your management of dyslipidaemia?

A

Assess the lipid profile to determine the best options and tailor management

Address RFs (obesity / T2DM / CKD / ETOH)

Specific management options:
	- Lifestyle 
		○ Dietary modification for weight loss (reducing intake of saturated and trans fats, increasing soluble fibre)
		○ ETOH avoidance
		○ Exercise 
		○ For increasing HDL = Increasing physical activity + losing weight 
	- Pharmacotherapy
		○ LDL
			1. Statin therapy
			2. Ezetimibe 
		○ Triglycerides
			§ Statins + Fenofibrate combination 
			§ Fish oil for severe triglyceridaemia
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11
Q

How would you treat HTN in CKD?

A
  • Target -> 140/90 generally
    ○ If DM or proteinuria -> 130/80
    • Lifestyle risk factors (diet, exercise 30 mins each day, salt <6g per day, smoking)
    • Start ACE/ARB, uptitrate to maximum dose
    • Can add CCB / diuretic / BB
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12
Q

Who needs treatment for HTN?

A

Decision for treatment -> based on CV risk / absolute BP level

  1. BP persistent >160/100 regardless of CV risk
  2. BP persistent >140/90 with moderate CV risk (10-15% 5 year risk)
  3. > 15% CV risk
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13
Q

Targets for HTN?

A

Generally <140/90

Target <130/80 if =

  • DM
  • CKD
  • older than 65
  • atherosclerotic disease of any kind
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14
Q

Guidelines for Pharm Rx of HTN?

A

1st line General
o ACEI/ARB
o CCBs (dihydropyridine)
o Thiazide
*CKD -> ACEI / ARB
*ACS or heart failure -> ACEIs / Beta blockers
*Symptomatic angina -> Beta blockers / CCBs

Resistant:

  • Spironolactone
  • Alpha blocker / moxonidine (do not use in HF)
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15
Q

Lifestyle modification for HTN?

A
  • Regular aerobic exercise
  • Reduction of alcohol intake
  • Sodium restriction to >6g / day
  • Weight reduction in overweight patients
  • Smoking cessation
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16
Q

DRILL = Hx for AF

A
  • Diagnosis / onset
    • Presentation
    • RFs
      ○ RHD
      ○ Obesity / OSA
      ○ ETOH
      ○ Thyroid
      ○ MR / dilated CM
    • Course
      ○ Admissions
      ○ Symptoms / effect on lifestyle
    • Management
      ○ Rate vs rhythm
      ○ TE prophylaxis + CHADsVA
      ○ Invasion
    • Complications
      ○ HF
      ○ Strokes / infarcts
      ○ Anticoagulation Cx
      • Current status and monitoring
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17
Q

How would you manage this person’s chronic symptomatic AF?

A
Principles 
	- Reducing symptom burden 
	- Avoiding complications
		○ TE events
		○ Heart failure 
Assess
	- TTE
		○ LV function 
		○ LA morphology to see if likely to be persistent AF
		○ Mitral valve
	- Rule out other contributors
		○ TFT
		○ UEC, CMP 
Management 
	- Specific therapy for AF
		○ Rate vs rhythm control strategy
			§ Considerations are 
				□ Symptoms
				□ Age of patient
				□ Likelihood of permanence
				□ LV dysfunction 
			§ Rhythm options
				□ Flecainide if NO structural heart disease
				□ Amiodarone in HF
				□ Sotalol in CAD if LVEF >30%
			§ Rate
				□ Beta blockers
				□ CCBs (not in HF)
				□ Digoxin (if BP not tolerating other agents, or acute HF)
			§ Refractory
				□ Catheter ablation (risk of complications)
				□ LAA surgery 
	- TE prophylaxis depending on CHADSVA
		○ NOACs vs warfarin 
	- Addressing underlying RFs
		○ Obesity
		○ ETOH etc
18
Q

DRILL = IHD History

A
  • Diagnosis / presentation
    • RFs:
      ○ All CVRFs
      ○ Triggers = anaemia, arrhythmias
    • Ix + Management
      ○ Acute events / revascularisation
      ○ Secondary prevention / RF modification
    • Current symptoms / impact on function
      ○ Admissions
    • Complications
      ○ HF
      ○ LV aneurysm
      ○ Arrhythmias
    • Monitoring
19
Q

How are you going to manage the antiplatelet therapy in peri-operative period?

A

If procedure occurring within first 30 days -> try to delay due to high risk of stent thrombosis

Aspirin does not increase the severity of bleeding complications, so can likely be continued for most procedures. I would discuss this with the surgeon involved. If requiring cessation -> 3 days before the procedure

Clopidogrel / ticagrelor -> 5 days before the procedure

Prasugrel -> 7 days before the procedure

I would aim to restart antiplatelet therapy as soon as possible postprocedurally, ideally within 48 hours, in discussion with the surgeon.

20
Q

How are you going to manage this person’s persistent angina?

A
  • Patient education about resting when angina begins, and if persistent after 2 doses of GTN spray then call an ambulance
  • Prevention of angina:
    ○ Addressing underlying risk factors
    ○ Pharmacotherapy
    1. Beta blockers
    1) ndCCBs (avoid in LVF) as ALTERNATIVE to BB
    2. dCCBs in addition to BBs for refractory symptoms
    3. Long acing nitrate
    4. Nicorandil
    5. Ivabradine
  • If refractory
    ○ Consideration of surgical mx
21
Q

Do you think this patient with MR needs surgery?

A

Indications for surgery =

  • Symptomatic patients (NYHA III/IV symptoms) with chronic severe primary MR with LV dysfunction but LVEF >30%
  • Asymptomatic patients with chronic severe primary MR and LVEF 30-60% and/or LVESD >40mm
22
Q

This person has known IHD with recent CAGs. How are you going to manage surgical risk?

A

Assess risk
○ Patient factors
§ Clarify current functional capacity (>4 METs or not)
§ Current concerning symptoms e.g. SOB, unstable angina
○ Surgical factors
§ Type and duration of surgery and anaesthetic required

If poor or unknown functional status, warrants further evaluation
○ Baseline ECG for abnormalities
○ Stress testing depending on local availability. Reasonable options that I would consider are Nuc Med MPS, or dobutamine stress echo
○ Stress ECG lower sensitivity and specificity, also limited utility if resting ECG is abnormal

Non cardiac issues

- AKI
- Delirium
- BSL mx
23
Q

How will you manage this person’s peri-operative anticoagulation on warfarin?

A

Reasons for bridging =

  1. Very high CHADSVA
  2. Acute VTE
  3. Mechanical valve

Process for bridging =

  • Withhold warfarin ~5 days pre-op and when INR <2 start therapeutic clexane
  • Withhold therapeutic clexane 24h prior to surgery
  • Restart warfarin post-operatively in conjunction with surgeons, generally on the day of surgery
  • Clexane bridge until 2 consecutive days of therapeutic INR
  • Safe to operate generally if INR <1.5

If no bridging required =
- assuming INR sitting in therapeutic range, cease 5 days pre-op

24
Q

EXAM = Describe findings in aortic regurgitation and signs of severity

A

Findings =
- high pitched early diastolic crescendo murmur heard at mid sternal region or LLSE sitting forward in full expiration

Signs of severity

  • Collapsing pulse
  • Wide pulse pressure
  • Soft S2
  • S3
  • Length of murmur
  • Austin Flint murmur
  • Signs of LV failure
25
EXAM = Describe findings in tricuspid regurgitation and signs of severity
Findings = - pansystolic murmur, loudest at lower left sternal edge on inspiration Signs of severity = - pulsatile liver - prominent v wave - signs of RV failure
26
EXAM = Describe findings in mitral stenosis and signs of severity
Findings: - Mid diastolic rumbling murmur - tapping apex beat Signs of severity = - small pulse pressure - early opening snap - length of murmur - diastolic thrill at apex - pulmonary HTN
27
EXAM = Describe findings in aortic regurgitation and signs of severity
Findings = - high pitched early diastolic crescendo murmur heard at mid sternal region or LLSE sitting forward in full expiration Signs of severity - Collapsing pulse - Wide pulse pressure - Soft S2 - S3 - Length of murmur - Austin Flint murmur - Signs of LV failure
28
EXAM = Describe findings in aortic stenosis and signs of severity
Findings = - ejection systolic murmur loudest over right second intercostal space and radiates to the carotids, louder with expiration - Apex beat -> non-displaced, pressure loaded Signs of severity = - Narrow pulse pressure - Low volume carotid pulse - Soft S2 - Paradoxical split S2 - S4 - Thrill - Signs of LV failure
29
EXAM = Describe findings in mitral regurgitation and signs of severity
Findings = - pan-systolic murmur loudest at apex, radiating to axilla and loudest on expiration - Apex beat -> displaced and volume loaded Signs of severity = - Small pulse volume (very severe) - Soft S1, Split S2 - S3 - Pulmonary hypertension - Evidence of LV failure - Early diastolic rumble (flow murmur)
30
Do you think this person should have an ICD inserted for secondary prevention? (Bruce)
- Goal in this patient is the prevention of total mortality, so risk of death from other underlying medical conditions needs to be carefully considered - If this person has a life expectancy of less than 1 year, it may not be appropriate - It does not improve QoL as it does not prevent malignant arrhythmias from occurring, it simply shocks after it has occurred, which is a very unpleasant experience - I would need to have a detailed discussion with the patient about the goals of therapy and whether it is in line with his wishes for his care
31
How would you manage this person's anticoagulation with a NOAC peri-operatively?
Bridging is very rarely required, as these agents return to therapeutic level quickly The timing of cessation will depend on - the patient's Creat Clearance AND - the procedure's bleeding risk Thus I would determine this in consultation with the surgeon, but be looking at ceasing apixaban/rivaroxaban anywhere between 1-3 days prior, and dabigatran 1-4 days prior
32
How are you going to manage this person's rheumatic heart disease long term?
Long term management = 1. Secondary prevention of recurrent rheumatic fever - Antibiotic prophylaxis (benzathine penicillin) ○ 10 years if mild ○ Until 35 years if moderate ○ Until 40 / lifelong if severe or have had cardiac surgery 2. Preventing IE - Dental hygiene and regular review is paramount - Amoxicillin prophylaxis for high risk procedures ○ Deep dental ○ Infected skin/ soft tissue ○ ENT ○ GI if infection present Address valve lesions if meeting usual criteria for intervention
33
How would you address their aortic stenosis as one possible contributor to multifactorial SOB?
Assess severity = - clinical signs - TTE findings - presence of heart failure / CAD Indications for surgery = - severe symptomatic AS - severe AS with HFrEF - If Moderate or Severe AS in patients who require CAGS - Markedly impaired exercise tolerance - Peak velocity of > 0.3m/s/yr Type of surgery = - TAVI for most - SAVR for low risk patients with anatomy that precludes TAVI
34
Management of Aortic Regurg?
Monitoring - q1 year TTE - Vasodilators (Nifedipine or ACEI) - Aggressive Rx of HTN (↓ afterload) ``` SURGICAL INDICATIONS Symptomatic - Severe AR and symptoms of heart failure - Severe AR with angina Asymptomatic - LV dysfunction EF< 50% - Significant LV dilatation - Significant aortic root dilatation ```
35
This person does not want a valve replacement for their severe AS. How will you manage them?
The focus will be on palliative management of symptoms and improving QoL - optimising haemodynamics -> cautious treatment of HTN and avoidance of diuretics/vasodilators if possible - treating co-morbidities such as AF - Preventative care to avoid decompensating events such as infection / anaemia. Vaccination will be key in this - involvement of Pall Care team to begin discussions around EOLC and wishes for care
36
How will you confirm / diagnose HFpEF?
Clinical symptoms/signs of HF Ix: - BNP >35 (may be normal if done when at rest. Would go up on exertion) - Echo ○ High LA pressures -> E/e’ >13, indication of left atrial pressure ○ Structural change -> Large left atrium
37
DRILL = List your history for HF
- Diagnosis + presentation - RFs ○ IHD ○ Arrhythmias ○ Valves ○ HTN ○ Medication ○ FHx - Ix ○ TTE findings - Course ○ Exacerbations / flares ○ Triggers - Current symptoms / NYHA status and IMPACT - Management ○ Non-pharm § Fluid monitoring ○ Pharm § Guideline-directed therapy ○ Advanced § Devices - Complications ○ ?CKD - Monitoring - Future ○ ?Tx - Don't forget CVRFs
38
How are you going to optimise this person's HF Mx?
Heart Failure Management Spiel - Assess current status ○ Anaemia / CKD, check for iron deficiency or thyroid dysfunction ○ TTE and trend ○ BNP, ECG - Address underlying RFs / aetiology ○ CVRFs / valves if relevant ○ Address triggers -> arrhythmias, avoid troublesome meds e.g. TCAs, steroids - Patient education on HF Self Management and linking with a comprehensive care team to support care and reduce hospitalisation Specific management ○ Non-Pharmacological § Fluid restriction/monitoring § Regular physical activity (tailored to NYHA) and referral for cardiac rehab § Diet -> sodium restriction and maintenance of a healthy weight § Smoking cessation / ETOH restriction § Regular screening for depression ○ Pharmacological § Symptomatic -> Diuretics for fluid mx § Improving survival with cardioprotective agents □ ACEi or ARB □ BB (Carvedilol, Bisoprolol, Metoprolol XR, Nebivolol) □ MRA (spiro, eplerenone) -> if K level and BP tolerates § Uptitrating to maximal tolerated therapy □ If ongoing LVEF <40% despite OMT (BB + ACE/ARB)--> ARNI □ If SR > 77 bpm despite maximal BB --> Ivabradine □ Consider SGLT2 (particularly if DM) § Last line agents: can consider digoxin or other vasodilator therapy with nitrates/hydralazine if not tolerating ACEI ○ Advanced Therapies § CRT = sinus, LVEF <35% and QRS > 130 msec, particularly LBBB. Weaker indications in AF § ICD -> Primary prevention if LVEF <35% § LV Assist Device as bridge to transplant § Heart Transplant -> End-stage HF with severe symptoms, poor prognosis and no alternative options I would ensure regular follow up and monitoring of UEC. renal fx and BP. I would also liaise closely with GP to ensure coordinated approach to care
39
How would you manage this person's HF in setting of their ESRF?
- CKD can limit dosing and choices of medication, with more risk of significant hyperkalaemia with ACEI/ARB / MRA - Requires close monitoring Management -> General measures are same - Assess current status ○ Anaemia / CKD, check for iron deficiency or thyroid dysfunction ○ TTE and trend ○ BNP, ECG - Address underlying RFs / aetiology ○ CVRFs / valves / IHD if relevant ○ Address triggers -> arrhythmias, avoid troublesome meds e.g. TCAs, steroids - Patient education on HF Self Management and linking with a comprehensive care team to support care and reduce hospitalisation -> Non-pharm remains same as always (education on fluid management, salt restriction, weight) -> Address fluid overload with diuretics and dialysis -> Optimise medical therapy with use of BBs (carvedilol) and ACEI/ARB if tolerated Close monitoring every month for electrolytes, BP, fluid status
40
How would you manage this person's AF in light of their co-existent HF?
- Most important issue in patients with reduced LVEF and persistent AF is restoration and maintenance of sinus rhythm when possible - Sinus rhythm is preferred to AF for most patients with HF, due to loss of atrial kick which worsens cardiac output - Reversible contributors should be addressed -> TFT, electrolytes, ETOH use - Assess likely duration of AF -> TTE for atrial enlargement, which can give an indication of likelihood of restoring sinus rhythm - Can consider catheter ablation for persistent AF, which can avoid burdensome AEs of anti-arrhythmics - Otherwise rate control is reasonable, with cardioselective BB - Ongoing monitoring to assess response and evaluate for AEs is important