CSC Technology & Digital Applications 5 — Questions and Answers
Question 1: During a telehealth visit for a patient with known systolic heart failure, which remote assessment provides the most clinically actionable information for management decisions?
- Video assessment of bilateral lower extremity edema combined with review of daily weight trend (Correct answer)
- Patient self-reported blood pressure without a validated home device
- Cardiac auscultation via a consumer-grade smartphone microphone application
- Symptom diary review without any objective measurement data
Correct answer: Video assessment of bilateral lower extremity edema combined with review of daily weight trend
Visual assessment of edema combined with serial weight data provides objective evidence of volume status changes that directly guide diuretic adjustments.
Question 2: From a patient safety perspective, the most clinically dangerous cybersecurity vulnerability in modern implantable cardiac devices is the ability to:
- Access stored device diagnostics and electrogram data without authorization
- Remotely alter pacing output parameters or deliver inappropriate high-energy shocks (Correct answer)
- Disrupt data transmission to the manufacturer's remote monitoring server
- Drain the device battery faster than the recommended longevity schedule
Correct answer: Remotely alter pacing output parameters or deliver inappropriate high-energy shocks
Unauthorized remote alteration of pacing parameters or delivery of shocks represents a direct, life-threatening patient safety risk unique to implantable cardiac devices.
Question 3: Three-dimensional printing technology derived from cardiac CT or MRI data is MOST commonly applied in clinical cardiology for:
- Manufacturing biocompatible prosthetic heart valves approved for implantation
- Creating patient-specific anatomical models for surgical planning in complex congenital heart disease (Correct answer)
- Producing coronary stents customized to individual vessel geometry
- Making biodegradable suture material matched to patient tissue composition
Correct answer: Creating patient-specific anatomical models for surgical planning in complex congenital heart disease
Patient-specific 3D-printed heart models allow surgeons to rehearse complex repairs, plan device sizing, and educate patients—particularly valuable in congenital heart disease.
Question 4: Compared to conventional median sternotomy CABG, robotic-assisted totally endoscopic coronary artery bypass grafting (TECAB) primarily offers:
- Superior long-term saphenous vein graft patency at 10 years
- Significantly shorter operative and cardiopulmonary bypass times
- Reduced wound complications and faster recovery due to smaller thoracic incisions (Correct answer)
- Complete elimination of the need for cardiopulmonary bypass in all cases
Correct answer: Reduced wound complications and faster recovery due to smaller thoracic incisions
The primary patient benefit of robotic TECAB is avoidance of sternotomy, resulting in smaller wounds, fewer wound complications, less pain, and faster return to activity.
Question 5: Augmented reality (AR) overlay technology during transcatheter aortic valve replacement (TAVR) procedures is primarily used to:
- Eliminate the operator's need for real-time fluoroscopic guidance
- Fuse pre-procedural 3D CT anatomy onto live fluoroscopic images to guide device positioning (Correct answer)
- Reduce radiation exposure to the patient and operating team to zero
- Provide tactile haptic feedback to the operator's hands during catheter manipulation
Correct answer: Fuse pre-procedural 3D CT anatomy onto live fluoroscopic images to guide device positioning
AR overlays pre-procedural CT-derived 3D aortic anatomy onto live fluoroscopy, providing spatial orientation that improves valve positioning accuracy.
Question 6: The FDA classifies AI/ML-based Software as a Medical Device (SaMD) primarily based on:
- The total cost of software development and validation studies
- The intended use and the level of patient risk if the device fails or provides incorrect output (Correct answer)
- The specific type of machine learning algorithm used (e.g., CNN vs. random forest)
- The size of the training dataset and diversity of the training population
Correct answer: The intended use and the level of patient risk if the device fails or provides incorrect output
FDA's risk-based framework assigns SaMD to Class I, II, or III based on intended use and the potential harm to patients from incorrect output or device failure.
Question 7: Among wearable-derived digital health metrics, which has shown the strongest independent association with cardiovascular mortality in large population studies?
- Average daily step count below 5,000 steps
- Gradual increase in resting heart rate over 6 months
- Reduction in heart rate variability (HRV) (Correct answer)
- Sleep duration consistently less than 6 hours per night
Correct answer: Reduction in heart rate variability (HRV)
Reduced HRV reflects autonomic dysfunction and sympathetic dominance, which are strongly and independently associated with cardiovascular mortality across multiple large cohort studies.
CSC Technology & Digital Applications 5
During a telehealth visit for a patient with known systolic heart failure, which remote assessment provides the most clinically actionable information for management decisions?