CIR CIR Quality Improvement & Patient Safety 2 — Questions and Answers
Question 1: Contrast-induced acute kidney injury (CI-AKI) is defined by a rise in serum creatinine of:
- ≥ 0.3 mg/dL or ≥ 50% increase within 48–72 hours of contrast exposure (Correct answer)
- ≥ 1.0 mg/dL increase within 24 hours
- Any detectable rise above baseline within 7 days
- ≥ 25% decrease in eGFR at 30-day follow-up
Correct answer: ≥ 0.3 mg/dL or ≥ 50% increase within 48–72 hours of contrast exposure
CI-AKI is defined as a serum creatinine rise of ≥ 0.3 mg/dL absolute or ≥ 50% relative increase within 48–72 hours after intravascular contrast administration.
Question 2: Which intervention is most evidence-supported for reducing CI-AKI in high-risk cath lab patients?
- Pre-procedure N-acetylcysteine administration
- Intravenous isotonic saline hydration before and after the procedure (Correct answer)
- Prophylactic hemodialysis immediately after contrast exposure
- Switching to gadolinium-based contrast agents
Correct answer: Intravenous isotonic saline hydration before and after the procedure
Adequate intravenous hydration with isotonic saline before and after contrast exposure remains the most consistently evidence-supported strategy for reducing CI-AKI risk.
Question 3: A cath lab program seeking ACC accreditation must demonstrate compliance with quality metrics tracked in which national registry?
- The Society of Thoracic Surgeons (STS) Adult Cardiac Surgery Database
- The ACC NCDR CathPCI Registry (Correct answer)
- The American Heart Association Get With The Guidelines database
- The Joint Commission Tracer Methodology audit system
Correct answer: The ACC NCDR CathPCI Registry
The ACC NCDR CathPCI Registry collects standardized procedural, outcome, and quality data from participating cath labs and is the foundation for ACC Cath Lab Accreditation benchmarking.
Question 4: Which practice best prevents wrong-patient contrast injections in a busy cath lab setting?
- Color-coded contrast syringes by volume
- Two-identifier patient verification at every major step of care (Correct answer)
- Limiting the number of patients in the holding area
- Using pre-labeled contrast syringes prepared at the start of the day
Correct answer: Two-identifier patient verification at every major step of care
The Joint Commission requires two independent patient identifiers (name plus date of birth or MRN) to be verified at each critical care transition to prevent patient misidentification errors.
Question 5: Skin peak dose (Pk) during fluoroscopically-guided cardiac procedures is important to monitor because:
- It determines the total radiation badge dose for the operator
- Doses exceeding 2 Gy may cause deterministic radiation skin injuries (Correct answer)
- It predicts the risk of contrast-induced nephropathy
- It is required for billing purposes under CMS regulations
Correct answer: Doses exceeding 2 Gy may cause deterministic radiation skin injuries
Deterministic skin effects (erythema, moist desquamation, necrosis) can occur at peak skin doses exceeding ~2 Gy, making intra-procedural monitoring essential for complex or prolonged fluoroscopic procedures.
Question 6: Which approach to quality improvement uses small, iterative cycles of Plan-Do-Study-Act (PDSA) to test changes?
- Six Sigma DMAIC methodology
- The Model for Improvement (Institute for Healthcare Improvement framework) (Correct answer)
- Lean value stream mapping
- ISO 9001 certification auditing
Correct answer: The Model for Improvement (Institute for Healthcare Improvement framework)
The IHI Model for Improvement employs rapid PDSA cycles to test, learn from, and refine process changes before implementing them at scale.
CIR CIR Quality Improvement & Patient Safety 2
Contrast-induced acute kidney injury (CI-AKI) is defined by a rise in serum creatinine of: