Devices › Defibrillator, automatic implantable cardioverter, with cardiac resynchronization (crt-d)
Device brand name · Permanent pacemaker electrode
Quartet: medical device reports filed with FDA
14,149 reports name it, 2012–2026. Manufacturer given most often on reports: St Jude Medical Crm-Sylmar. Product code NIK.
- 14,149
- device reports naming the brand
- 0.1% of all MAUDE reports · about 976 a year
- 848
- reports, 12 months to August 2026
- 1,016 in the 12 months before
- 39.9%
- classified as malfunction
- 47.2% across the product code
- 5.2%
- classified as death, as reported
- 730 reports · not verified by FDA
FDA's MAUDE database holds 14,149 reports that name the brand "Quartet" (permanent pacemaker electrode), received between January 2012 and August 2026; the manufacturer given most often on reports is St Jude Medical Crm-Sylmar. Spellings of one product vary from report to report.
848 reports arrived in the 12 months to August 2026, down 17% from 1,016 in the 12 months before. FDA releases MAUDE data monthly; reports can arrive months after an event, so the newest months grow in later releases. The event types recorded are injury (54.9%), malfunction (39.9%) and death (5.2%); across all defibrillator, automatic implantable cardioverter, with cardiac resynchronization (crt-d) reports (product code NIK) death is recorded in 2.8% and malfunction in 47.2%. Event type is the reporter's classification of the report, not a verified outcome.
The device problems coded most often are device dislodged or dislocated (34.6%), failure to capture (25.7%) and high impedance (8.2%). The patient problems coded most often are death, discomfort and muscle stimulation. FDA states that "MDR data alone cannot be used to establish rates of events, evaluate a change in event rates over time or compare event rates between devices. The number of reports cannot be interpreted or used in isolation to reach conclusions about the existence, severity, or frequency of problems associated with devices." It adds that the reporting system "has limitations, including the potential submission of incomplete, inaccurate, untimely, unverified, or biased data."
Reports by month, five years
Reports by the month FDA received them. FDA releases MAUDE data monthly; reports can arrive months after an event, so the newest months grow in later releases.
By year received
Event type and report source
Event type, as classified on the report
Who filed the report
Grey bar: all 170,404 reports carrying product code NIK. Event type is the filer's classification and is not verified by FDA.
Device problems coded
| Device problem (FDA code) | Reports | Share | Share across product code |
|---|---|---|---|
| Device dislodged or dislocated | 4,889 | 34.6% | 2.4% |
| Failure to capture | 3,630 | 25.7% | 4.1% |
| High impedance | 1,156 | 8.2% | 5.6% |
| High capture threshold | 996 | 7% | 1% |
| Capturing problem | 921 | 6.5% | 1% |
| Breakthe device broke | 675 | 4.8% | 0.5% |
| Difficult to removethe device was hard to remove | 558 | 3.9% | 0.3% |
| Failure to advance | 498 | 3.5% | 0.4% |
| Difficult to insertthe device was hard to insert | 466 | 3.3% | 0.2% |
| Therapy delivered to incorrect body area | 465 | 3.3% | 0.4% |
| Separation failure | 329 | 2.3% | 0.2% |
| Low impedance | 267 | 1.9% | 1% |
| Over-sensing | 206 | 1.5% | 22.3% |
| Fracturea broken bone | 174 | 1.2% | 0.5% |
| Failure to sense | 149 | 1.1% | 0.2% |
| Insufficient device problem information | 148 | 1% | 1.3% |
| Intermittent capture | 121 | 0.9% | 0.2% |
| Detachment of device or device componentpart of the device came off | 104 | 0.7% | 0.1% |
| Difficult to advance | 84 | 0.6% | 0% |
| Signal artifact/noise | 80 | 0.6% | 1.9% |
FDA's device problem codes as entered on the report; one report can carry several. Generic codes such as "no apparent adverse event" are left out.
Patient problems coded
| Patient problem (FDA code) | Reports | Share |
|---|---|---|
| Deaththe patient died; cause not stated by this term | 634 | 4.5% |
| Discomfortdiscomfort | 523 | 3.7% |
| Muscle stimulation | 389 | 2.7% |
| Undesired nerve stimulation | 312 | 2.2% |
| Dyspneashortness of breath | 201 | 1.4% |
| Twiddlers syndrome | 188 | 1.3% |
| Vascular dissection | 127 | 0.9% |
| Fatiguetiredness | 104 | 0.7% |
| Pocket erosion | 92 | 0.7% |
| Arrhythmia | 90 | 0.6% |
| Dizzinesslight-headedness or unsteadiness | 64 | 0.5% |
| Pericardial effusionfluid around the heart | 60 | 0.4% |
| Fever | 57 | 0.4% |
| Complaint, ill-defined | 50 | 0.4% |
| Heart failure | 47 | 0.3% |
Patient problem codes are present mainly in reports filed since 2019 and are often blank.
In context
| Measure | Quartet | Product code NIK | All MAUDE reports |
|---|---|---|---|
| Reports | 14,149 | 170,404 | 26,136,888 |
| Share of that pool | — | 8.3% | 0.1% |
| Classified as death, per 1,000 reports | 52 | 28 | 9 |
| Classified as injury | 54.9% | 49.8% | 36.2% |
| Classified as malfunction | 39.9% | 47.2% | 62.3% |
| Filed by the manufacturer | 99.9% | 99.2% | 94.9% |
Shares are of reports, not of devices in use. FDA states that "MDR data alone cannot be used to establish rates of events, evaluate a change in event rates over time or compare event rates between devices. The number of reports cannot be interpreted or used in isolation to reach conclusions about the existence, severity, or frequency of problems associated with devices." It adds that the reporting system "has limitations, including the potential submission of incomplete, inaccurate, untimely, unverified, or biased data."
Other brands with product code NIK
| Brand | Reports | Latest 12 months | Classified as death |
|---|---|---|---|
| Quadra Assura MP ICD | 14,897 | 507 | 2.1% |
| Gallant HF | 8,971 | 1,918 | 0.7% |
| Quadra Assura Crt-D Quad Rf Hv | 7,971 | 14 | 2.5% |
| Unify Assura CRT-D RF HV | 6,731 | 186 | 3.7% |
| Unify Crt-D | 5,907 | 10 | 3.4% |
| Consulta Crt-D | 4,623 | 0 | 5.9% |
| Unify Assura ICD | 4,511 | 127 | 1.6% |
| Claria MRI Quad CRT-D SureScan | 3,775 | 274 | 2.2% |
| Cognis | 8,694 | 6 | 1.5% |
| Protecta Xt Crt-D | 3,541 | 3 | 4.5% |
| Quadra Assura Ddqp+ | 3,349 | 0 | 2.3% |
| Contak Renewal | 3,745 | 0 | 4.8% |
| Cobalt XT HF Quad CRT-D MRI SureScan | 2,581 | 791 | 3% |
| Quadra Assura ICD | 2,526 | 67 | 0.8% |
| Vigilant X4 Crt-D | 2,275 | 482 | 0.9% |
Ordered by report count for navigation only. FDA states that "MDR data alone cannot be used to establish rates of events, evaluate a change in event rates over time or compare event rates between devices. The number of reports cannot be interpreted or used in isolation to reach conclusions about the existence, severity, or frequency of problems associated with devices." It adds that the reporting system "has limitations, including the potential submission of incomplete, inaccurate, untimely, unverified, or biased data." FDA also states that "common products may have a higher number of adverse events due to the higher total number of people using the product."
Questions about Quartet reports
How many FDA reports name Quartet?
14,149 medical device reports in the openFDA MAUDE release of 28 Sep 2026, covering reports received through August 2026; 848 in the latest 12 months.
What kinds of events are reported?
injury (54.9%), malfunction (39.9%) and death (5.2%). "Event type" is how the report was classified when filed: death, injury, malfunction or other.
What device problems are coded?
device dislodged or dislocated (34.6%), failure to capture (25.7%), high impedance (8.2%), high capture threshold (7%) and capturing problem (6.5%). These are FDA's device problem codes as entered on the report.
Who files these reports?
manufacturer reports (99.9%) and voluntary reports (0.1%). Manufacturers and user facilities are required to report; voluntary reports come from health professionals and the public.
Do these reports show that Quartet was at fault?
No. FDA states that "MDR data alone cannot be used to establish rates of events, evaluate a change in event rates over time or compare event rates between devices. The number of reports cannot be interpreted or used in isolation to reach conclusions about the existence, severity, or frequency of problems associated with devices." It adds that the reporting system "has limitations, including the potential submission of incomplete, inaccurate, untimely, unverified, or biased data." FDA adds that "a causal relationship cannot be established between product and reactions listed in a report."
How do I report a problem with a medical device?
Through FDA MedWatch (Form FDA 3500 for health professionals and consumers), or to the manufacturer. See the guide on how to report.
Where this comes from. Counts are built from the openFDA Device Adverse Event (MAUDE) bulk export released 28 Sep 2026, which holds reports FDA received through 31 Aug 2026. Brand, generic and manufacturer names are as written on the reports; product code names come from FDA's device classification. A report counts here when any device it lists carries this brand name after punctuation and capitalisation are normalised. No report narrative, lot number, patient detail or reporter identity is published. See the methodology and sources; FDA's record is authoritative, and corrections are handled within five working days.
Drug data (FAERS) through 30 Jun 2026; device data (MAUDE) through 31 Aug 2026. Not medical advice.