Cardiology Flashcards
DRILL = List CV RFs to ask for in history
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
What is the criteria for MetS?
MetS Criteria =
- Elevated WC ○ Men >94 ○ Women >80 - PLUS 2 of ○ High triglycerides ○ Low HDL ○ Impaired glucose tolerance ○ HTN
*International Diabetes Federation
Is this patient a candidate for bariatric surgery? Discuss
e.g. Josephine G
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
What are some medications which promote weight gain and can worsen obesity?
Insulin / Sulfonylureas
Steroids
Atypical antipsychotics and clozapine
OCP
DRILL =
List your dietary history
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)
DRILL =
List your obesity Hx
- 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
What are some HIV medications which contribute to CV risk?
Protease Inhibitors =
- Ritonavir
- Darunavir
- Lopinavir
Abacavir
- Nucleoside Analog Reverse Transcriptase Inhibitor (NRTI)
How much weight can one expect to lose with lifestyle measures alone?
`5-7%
This still has been shown to have health benefits
How would you manage this person’s obesity?
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
What is your management of dyslipidaemia?
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
How would you treat HTN in CKD?
- 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
Who needs treatment for HTN?
Decision for treatment -> based on CV risk / absolute BP level
- BP persistent >160/100 regardless of CV risk
- BP persistent >140/90 with moderate CV risk (10-15% 5 year risk)
- > 15% CV risk
Targets for HTN?
Generally <140/90
Target <130/80 if =
- DM
- CKD
- older than 65
- atherosclerotic disease of any kind
Guidelines for Pharm Rx of HTN?
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)
Lifestyle modification for HTN?
- Regular aerobic exercise
- Reduction of alcohol intake
- Sodium restriction to >6g / day
- Weight reduction in overweight patients
- Smoking cessation
DRILL = Hx for AF
- 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
How would you manage this person’s chronic symptomatic AF?
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
DRILL = IHD History
- 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
- RFs:
How are you going to manage the antiplatelet therapy in peri-operative period?
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.
How are you going to manage this person’s persistent angina?
- 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
Do you think this patient with MR needs surgery?
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
This person has known IHD with recent CAGs. How are you going to manage surgical risk?
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
How will you manage this person’s peri-operative anticoagulation on warfarin?
Reasons for bridging =
- Very high CHADSVA
- Acute VTE
- 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
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