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Asset Type
Electrocardiograph (EKG) Machine
Manufacturer
Model
What This Guide Helps With
Troubleshooting missing ECG analysis or interpretation caused by incomplete acquisition, poor signal, lead problems, patient-data requirements, workflow settings, or configuration issues.
Step-by-Step Troubleshooting
1. Protect the Patient and Do Not Substitute Automated Interpretation for Clinical Review
A missing automated interpretation must not delay evaluation of an ECG that requires clinical review.
If the tracing is clinically urgent, ensure the ECG is presented to qualified clinical personnel regardless of whether an automated 12SL interpretation is generated.
Expected outcome: Patient care continues based on the ECG itself rather than dependence on automated analysis.
2. Confirm the Exact Complaint
Determine whether the ECG acquires normally but no analysis appears, whether only part of the expected analysis is missing, or whether the device fails to complete the acquisition.
Confirm whether the issue affects every ECG or only specific recordings.
Expected outcome: The problem is distinguished from a broader ECG acquisition or printing failure.
3. Verify Complete ECG Acquisition
Confirm that the system successfully obtains the expected 12-lead ECG without unresolved lead-off conditions or missing channels.
If leads are absent, troubleshoot electrode, lead-set, cable, or acquisition problems first.
Expected outcome: A complete ECG is acquired. If acquisition is incomplete, analysis should not be treated as the primary fault.
4. Evaluate Signal Quality
Inspect the tracing for excessive artifact, baseline instability, poor electrode contact, disconnected leads, or other conditions that could prevent reliable analysis.
Correct external signal-quality problems and reacquire the ECG.
Expected outcome: A clean, complete tracing is available for analysis. If interpretation is then generated normally, troubleshooting can stop after verification.
5. Verify Patient Data Required by the Workflow
Confirm that required patient information for the configured workflow has been entered appropriately and has not been left incomplete because of a patient-ID or data-entry problem.
Use test data during bench verification rather than real patient information.
Expected outcome: Required test patient fields are populated correctly and the acquisition can proceed through the normal analysis workflow.
6. Verify the Intended Acquisition Mode and User-Accessible Settings
Confirm that the operator is using the intended diagnostic 12-lead workflow and that analysis or interpretation has not been disabled through an authorized user-accessible setting.
Do not alter licensed functions, protected configuration, or clinical interpretation settings without authorization.
Expected outcome: The MAC 7 is operating in the intended workflow with the expected analysis feature available.
7. Test With an Approved ECG Simulator
Connect an approved ECG simulator and acquire a clean, complete 12-lead test ECG using appropriate test information.
This helps separate patient signal conditions from a device or configuration problem.
Expected outcome: The device completes the ECG acquisition and produces the expected configured analysis or interpretation. If so, the original problem was likely related to acquisition conditions rather than device failure.
8. Compare With Another Known-Working MAC 7 When Available
If the issue appears workflow- or configuration-related, compare the relevant user-accessible behavior with another properly functioning MAC 7 configured for the same clinical environment.
Do not copy configuration values blindly or change protected settings.
Expected outcome: An obvious workflow or authorized configuration difference is identified, or the affected device remains isolated as abnormal.
9. Verify Output and Storage
Confirm whether the expected interpretation appears on the display, printed ECG, stored record, or transmitted record as appropriate to the configured workflow.
A display or printer issue should not be mistaken for failure of the analysis engine itself.
Expected outcome: The configured interpretation is present wherever the workflow is designed to display or store it.
10. Perform Final Functional Verification
Acquire multiple simulator-based ECGs using the normal diagnostic workflow and verify complete signals, analysis generation, display or print output, and basic system stability.
Expected outcome: 12SL analysis or interpretation is consistently generated as configured. The device may return to service when all required testing passes.
11. Escalate Persistent Analysis Failure
If clean complete simulator ECGs still do not generate the expected analysis while the workflow and authorized settings appear correct, stop external troubleshooting.
Expected outcome: The MAC 7 is escalated for software, licensing, configuration, or other service-level evaluation.
If the Problem Persists
Common signal-quality, lead-off, acquisition, patient-data, workflow, and accessible configuration causes have been ruled out. Remaining possibilities include software configuration, licensed-feature status, analysis software problems, corrupted system configuration, or another service-level condition.
The device should be:
- Removed from the affected diagnostic workflow when expected analysis functionality is required.
- Labeled Out of Service when appropriate.
- Sent for repair or bench evaluation.
- Evaluated using appropriate GE Healthcare documentation and approved test equipment.
- Configured, restored, or repaired only by qualified and authorized personnel.
Do not attempt unauthorized software installation, licensing changes, service-menu adjustments, or internal repair. After corrective work, verify clean 12-lead acquisition and consistent generation of the configured analysis before return to service. Knowing when to stop external troubleshooting is proper troubleshooting.
Clinical Use Tip
Automated interpretation supports but does not replace qualified clinical ECG review; a valid tracing should still be routed for clinical assessment if automated analysis is unavailable.
Work Order Documentation (CCR Method)
CCR = Complaint, Cause, Resolution
Complaint
What was reported by the clinical staff.
Example:
"Clinical staff reported that the MAC 7 produced a 12-lead ECG tracing but did not generate the expected 12SL interpretation."
Cause
What was observed during troubleshooting.
Example:
"Clinical Engineering found persistent lead-off and excessive artifact from a damaged lead set, preventing a clean complete acquisition for analysis."
Resolution
What action was taken.
Example:
"Replaced the defective lead set and verified clean simulator-based 12-lead acquisition with consistent generation of the configured 12SL interpretation."
Helpful Details to Include (If Known)
- Whether the ECG tracing was complete.
- Leads missing or showing lead-off.
- Signal artifact observed.
- Patient-data entry status.
- Acquisition workflow used.
- User-accessible analysis settings observed.
- Simulator test results.
- Comparison with another MAC 7.
- Whether interpretation appeared on display, print, or stored record.
- Results before and after correction.
- Final device status.
Final Thought
Verify the ECG itself before treating missing interpretation as an analysis-system failure. Clean signals, complete leads, correct workflow, appropriate patient data, and authorized configuration should all be confirmed before escalation.
That is successful troubleshooting.