{
  "meta": {
    "disclaimer": "Do not rely on openFDA to make decisions regarding medical care. While we make every effort to ensure that data is accurate, you should assume all results are unvalidated. We may limit or otherwise restrict your access to the API in line with our Terms of Service.",
    "terms": "https://open.fda.gov/terms/",
    "license": "https://open.fda.gov/license/",
    "last_updated": "2026-10-13"
  },
  "results": [
    {
      "term": "Adverse Event Without Identified Device or Use Problem",
      "count": 9711
    },
    {
      "term": "Over-Sensing",
      "count": 1510
    },
    {
      "term": "Failure to Interrogate",
      "count": 1472
    },
    {
      "term": "Premature Discharge of Battery",
      "count": 1422
    },
    {
      "term": "Defective Device",
      "count": 1303
    },
    {
      "term": "Under-Sensing",
      "count": 701
    },
    {
      "term": "Pacing Problem",
      "count": 669
    },
    {
      "term": "No Pacing",
      "count": 612
    },
    {
      "term": "Pacemaker Found in Back-Up Mode",
      "count": 585
    },
    {
      "term": "Failure to Capture",
      "count": 451
    },
    {
      "term": "No Apparent Adverse Event",
      "count": 398
    },
    {
      "term": "Signal Artifact/Noise",
      "count": 392
    },
    {
      "term": "Incorrect Measurement",
      "count": 386
    },
    {
      "term": "Unexpected Mode Switch",
      "count": 312
    },
    {
      "term": "Pacing Asynchronously",
      "count": 238
    },
    {
      "term": "Loose or Intermittent Connection",
      "count": 211
    },
    {
      "term": "Interrogation Problem",
      "count": 209
    },
    {
      "term": "Data Problem",
      "count": 174
    },
    {
      "term": "Capturing Problem",
      "count": 155
    },
    {
      "term": "Failure to Disconnect",
      "count": 143
    },
    {
      "term": "Insufficient Device Problem Information",
      "count": 141
    },
    {
      "term": "Connection Problem",
      "count": 130
    },
    {
      "term": "High impedance",
      "count": 120
    },
    {
      "term": "Wireless Communication Problem",
      "count": 105
    },
    {
      "term": "Device Sensing Problem",
      "count": 100
    },
    {
      "term": "Incorrect, Inadequate or Imprecise Result or Readings",
      "count": 97
    },
    {
      "term": "Low impedance",
      "count": 81
    },
    {
      "term": "Migration or Expulsion of Device",
      "count": 79
    },
    {
      "term": "Difficult to Remove",
      "count": 73
    },
    {
      "term": "Inappropriate or Unexpected Reset",
      "count": 73
    },
    {
      "term": "Migration",
      "count": 73
    },
    {
      "term": "Intermittent Capture",
      "count": 72
    },
    {
      "term": "Therapy Delivered to Incorrect Body Area",
      "count": 65
    },
    {
      "term": "Misconnection",
      "count": 64
    },
    {
      "term": "Communication or Transmission Problem",
      "count": 49
    },
    {
      "term": "Telemetry Discrepancy",
      "count": 47
    },
    {
      "term": "Break",
      "count": 39
    },
    {
      "term": "Appropriate Device Problem Term/Code Not Available",
      "count": 37
    },
    {
      "term": "Failure to Sense",
      "count": 35
    },
    {
      "term": "Contamination of Device Ingredient or Reagent",
      "count": 34
    },
    {
      "term": "Operating System Version or Upgrade Problem",
      "count": 31
    },
    {
      "term": "High Capture Threshold",
      "count": 24
    },
    {
      "term": "Use of Device Problem",
      "count": 24
    },
    {
      "term": "Impedance Problem",
      "count": 23
    },
    {
      "term": "Material Discolored",
      "count": 23
    },
    {
      "term": "Device Operates Differently Than Expected",
      "count": 22
    },
    {
      "term": "Pacing Intermittently",
      "count": 22
    },
    {
      "term": "Sensing Intermittently",
      "count": 19
    },
    {
      "term": "Detachment of Device or Device Component",
      "count": 17
    },
    {
      "term": "Fitting Problem",
      "count": 14
    },
    {
      "term": "Mechanical Problem",
      "count": 14
    },
    {
      "term": "Output Problem",
      "count": 14
    },
    {
      "term": "Device Displays Incorrect Message",
      "count": 13
    },
    {
      "term": "Out-Of-Box Failure",
      "count": 13
    },
    {
      "term": "Compatibility Problem",
      "count": 11
    },
    {
      "term": "Incorrect Interpretation of Signal",
      "count": 11
    },
    {
      "term": "Difficult to Interrogate",
      "count": 10
    },
    {
      "term": "Misassembled",
      "count": 10
    },
    {
      "term": "Separation Failure",
      "count": 10
    },
    {
      "term": "Battery Problem",
      "count": 8
    },
    {
      "term": "Difficult to Insert",
      "count": 8
    },
    {
      "term": "Electromagnetic Interference",
      "count": 8
    },
    {
      "term": "No Device Output",
      "count": 8
    },
    {
      "term": "Use of Incorrect Control/Treatment Settings",
      "count": 8
    },
    {
      "term": "Computer Software Problem",
      "count": 7
    },
    {
      "term": "Product Quality Problem",
      "count": 7
    },
    {
      "term": "Noise, Audible",
      "count": 6
    },
    {
      "term": "Problem with Software Installation",
      "count": 6
    },
    {
      "term": "Charging Problem",
      "count": 5
    },
    {
      "term": "Environmental Compatibility Problem",
      "count": 5
    },
    {
      "term": "Programming Issue",
      "count": 5
    },
    {
      "term": "Decreased Sensitivity",
      "count": 4
    },
    {
      "term": "Device Contamination with Body Fluid",
      "count": 4
    },
    {
      "term": "Device Markings/Labelling Problem",
      "count": 4
    },
    {
      "term": "Improper or Incorrect Procedure or Method",
      "count": 4
    },
    {
      "term": "Low Sensing Threshold",
      "count": 4
    },
    {
      "term": "Unstable Capture Threshold",
      "count": 4
    },
    {
      "term": "Application Program Version or Upgrade Problem",
      "count": 3
    },
    {
      "term": "Computer Operating System Problem",
      "count": 3
    },
    {
      "term": "Device Difficult to Program or Calibrate",
      "count": 3
    },
    {
      "term": "Device Dislodged or Dislocated",
      "count": 3
    },
    {
      "term": "Packaging Problem",
      "count": 3
    },
    {
      "term": "Premature Elective Replacement Indicator",
      "count": 3
    },
    {
      "term": "Application Program Problem",
      "count": 2
    },
    {
      "term": "Biocompatibility",
      "count": 2
    },
    {
      "term": "Component Missing",
      "count": 2
    },
    {
      "term": "Delivered as Unsterile Product",
      "count": 2
    },
    {
      "term": "Excessive Heating",
      "count": 2
    },
    {
      "term": "Extracardiac stimulation",
      "count": 2
    },
    {
      "term": "Inappropriate/Inadequate Shock/Stimulation",
      "count": 2
    },
    {
      "term": "Manufacturing, Packaging or Shipping Problem",
      "count": 2
    },
    {
      "term": "Protective Measures Problem",
      "count": 2
    },
    {
      "term": "Reset Problem",
      "count": 2
    },
    {
      "term": "Unable to Obtain Readings",
      "count": 2
    },
    {
      "term": "Alarm Not Visible",
      "count": 1
    },
    {
      "term": "Contamination",
      "count": 1
    },
    {
      "term": "Crack",
      "count": 1
    },
    {
      "term": "Defective Component",
      "count": 1
    },
    {
      "term": "Defibrillation/Stimulation Problem",
      "count": 1
    },
    {
      "term": "Degraded",
      "count": 1
    }
  ]
}