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NUSA 203: Exam 4 Questions and
Answers Grade A+
Dysrhythmia causes
✓ - MI
✓ - Mg or K imbalances
✓ - hypoxia
✓ - drug toxicity
✓ - hypovolemia
✓ - illegal drug use
✓ - stress
✓ - caffeine
✓ - nicotine
✓ - alcohol
V1 lead placement
✓ right side of sternum, 4th intercostal space
V2 lead placement
Master01 | October, 2024/2025 | Latest update
, 1|Page | © copyright 2024/2025 | Grade A+
✓ left side of sternum, 4th intercostal space
V3 lead placement
✓ between V2 and V4
V4 lead placement
✓ left midclavicular line, 5th intercostal space
V5 lead placement
✓ left anterior axillary line at same level as V4
V6 lead placement
✓ left midaxillary line at same level as V5
ECG strip time length
✓ 3 seconds
ECG big box time length
✓ 0.20 seconds
Master01 | October, 2024/2025 | Latest update
, 1|Page | © copyright 2024/2025 | Grade A+
ECG small box time length
✓ 0.04 seconds
ECG big box voltage
✓ 0.5 mV
Normal ECG HR
✓ - measured by counting QRS complexes
✓ - 60 - 100 bpm
Normal ECG rhythm
✓ - regularity of P waves
✓ - regularity of QRS complexes
Normal ECG PR interval
✓ 0.12 - 0.20 seconds
Normal ECG QRS interval
✓ 0.04 - 0.12 seconds
Master01 | October, 2024/2025 | Latest update
NUSA 203: Exam 4 Questions and
Answers Grade A+
Dysrhythmia causes
✓ - MI
✓ - Mg or K imbalances
✓ - hypoxia
✓ - drug toxicity
✓ - hypovolemia
✓ - illegal drug use
✓ - stress
✓ - caffeine
✓ - nicotine
✓ - alcohol
V1 lead placement
✓ right side of sternum, 4th intercostal space
V2 lead placement
Master01 | October, 2024/2025 | Latest update
, 1|Page | © copyright 2024/2025 | Grade A+
✓ left side of sternum, 4th intercostal space
V3 lead placement
✓ between V2 and V4
V4 lead placement
✓ left midclavicular line, 5th intercostal space
V5 lead placement
✓ left anterior axillary line at same level as V4
V6 lead placement
✓ left midaxillary line at same level as V5
ECG strip time length
✓ 3 seconds
ECG big box time length
✓ 0.20 seconds
Master01 | October, 2024/2025 | Latest update
, 1|Page | © copyright 2024/2025 | Grade A+
ECG small box time length
✓ 0.04 seconds
ECG big box voltage
✓ 0.5 mV
Normal ECG HR
✓ - measured by counting QRS complexes
✓ - 60 - 100 bpm
Normal ECG rhythm
✓ - regularity of P waves
✓ - regularity of QRS complexes
Normal ECG PR interval
✓ 0.12 - 0.20 seconds
Normal ECG QRS interval
✓ 0.04 - 0.12 seconds
Master01 | October, 2024/2025 | Latest update