You are reviewing in the clinic a 60-year-old man listed next week for a total thyroidectomy for amiodarone induced thyrotoxicosis.
Past medical history:
Ischaemic cardiomyopathy
Cardiac resynchronisation therapy with implantable defibrillator (CRT-D) placed two
months ago
Type II Diabetes
Obesity – 110kg, 174cm. Neck circumference 44cm
Hypercholesterolaemia
Gastro-oesophageal reflux disease
Drugs:
Aspirin 100mg once daily
Bisoprolol 2.5mg once daily
Sacributril / Valsartan 97/103 mg twice daily
Spironolactone 25mg once daily
Frusemide 40mg once daily
Rosuvastatin 40mg once daily
Metformin XR 1g twice daily
Dapagliflozin 10mg once daily
Semaglutide 1mg weekly sub cut
Esomeprazole 40mg once daily
CRT-D report: attached
Echo summary report: attached
Echocardiogram Summary (performed day before clinic)
Severe ischemic cardiomyopathy with global LV dysfunction (EF 25%)
Dilated LV with extensive wall motion abnormalities, consistent with prior infarcts
LA moderately dilated; RA mildly dilated
Mild-moderate functional MR due to LV remodelling
Mild TR.
Aortic valve normal structure, no stenosis or regurgitation
Biventricular pacing active, with evidence of improved mechanical synchrony
Mild pulmonary hypertension (RSVP 40mmHg) and mildly dilated RV with reduced
function
IVC: normal diameter, normal respiratory collapse
Pacemaker report
Date of Evaluation: 12th May, 2025
Device Model: Medtronic Claria MRI Quad CRT-D
Implant Date: March 27th, 2025
Indication for CRT-D: Severe ischemic cardiomyopathy (LVEF 20%), NYHA Class III
heart failure, history of ventricular arrhythmias
1. Device Information
Device Type: Cardiac Resynchronization Therapy with Defibrillator (CRT-D)
Leads & Positioning:
Right Atrium (RA): Lead in right atrial appendage
Right Ventricle (RV): Lead in RV apex (shock lead)
Left Ventricle (LV): Lead via coronary sinus to lateral/posterolateral vein
2. Intrinsic Rhythm & Pacing Dependence
Underlying Rhythm: Normal sinus rhythm (NSR)
Atrial Pacing (AP): 1% (Minimal pacing, appropriate sinus node function)
Ventricular Pacing (VP): 96% biventricular pacing (Effective CRT delivery)
Biventricular Pacing Capture: >95% (Adequate resynchronization)