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Table 4.

From HTMcommunityDB.org

See updated version of this page at Table 4

Combining the DR and SV severity projections (in Tables 1 and 2) into one single measure of severity

The twenty devices in rows 1-20 are considered by the Task Force to be potentially PM Priority 1 because examination of their generic PM procedures shows that they have PM-related failure modes or causes of failure, associated with either their DR or SV tasks, that could cause the device to fail while in use with the highest Level of Severity (LOS 3 (life threatening). The scenarios and worst-case outcomes that might result from these failure modes or possible causes of failure are described in Table 2. and Table 3. on this website.

All seventy one of these devices are ranked into eight different PM Failure Severity Level categories (A through H - see column 5) according to the severity of the potential consequences of a PM-related failure, and they are then ordered alphabetically within each ranking. The group of device types listed within the "PM Failure Severity Level" (column 5) as A. Highest severity have the most severe potential consequences; and the group of device types listed within the "PM Failure Severity Level" (column 5) as H. Lowest severity have the least severe potential consequences.

All other devices (not included in one of the 1 - 71 different device types listed in the table below) are considered to be non PM-critical devices, or more simply, non-critical devices. These are devices that cannot be made any safer by any kind of periodic, planned maintenance.


This table was last revised on 8-20-18. (See updated version of this page at Table 4)

2.

HTMC device type
3.
Level of Severity
of effects of
device restoration
failures
4.
Level of Severity
of effects of
hidden safety
failures
5.
PM Failure Severity Level -
based on potential severity
of PM-preventable
device failures
6.

HTMC Procedure Code
7.
Level of
potential
PM risk
1 AED 3 3 A. Highest severity AED-01 High
2 anesthesia unit 3 3 A. Highest severity ANES-01 High
3 critical care ventilator 3 3 A. Highest severity C.VEN-01 High
4 defibrillator/ monitor 3 3 A. Highest severity DEF-01 High
5 intra-aortic balloon pump 3 3 A. Highest severity I.A.B.P-01 High
6 transport incubator 3 3 A. Highest severity T.INC-01 High
7 transport ventilator 3 3 A. Highest severity T.VEN-01 High
8 apnea monitor 2 3 B. High severity APN.M-01 High
9 infant incubator 2 3 B. High severity IN.IN-01 High
10 cardiac resuscitator 3 2 B. High severity C.RES-01 High
11 external pacemaker 3 2 B. High severity EX.PA-01 High
12 heart-lung bypass unit 3 2 B. High severity H.L.BY-01 High
13 neonatal monitor 2 3 B. High severity NEO.M-01 High
14 oxygen monitor 2 3 B. High severity OXY.M-01 High
15 patient monitoring system 2 3 B. High severity P.M.S-01 High
16 linear accelerator 1 3 C. Fairly high severity LN.AC-01 High
17 blood pump, extracorporeal 3 0 D. Moderate-high severity BL.P.E-01 High
18 oxygen analyzer 0 3 D. Moderate-high severity OXY.A-01 High
19 PCA pump 0 3 D. Moderate-high severity INF.D-03 High
20 syringe pump 0 3 D. Moderate-high severity INF.D-02 High
21 Blood Bank refrigerator 2 2 E. Moderate severity RE.BB-01 Moderate
22 CT scanner 2 2 E. Moderate severity CT-01 Moderate
23 fetal monitor 2 2 E. Moderate severity FET.M-01 Moderate
24 surgical guidance unit 2 2 E. Moderate severity S.GUI-01 Moderate
25 surgical robot 2 2 E. Moderate severity S.ROB-01 Moderate
26 telemetry system 2 2 E. Moderate severity TELE-01 Moderate
27 transcutaneous O2/ CO2 monitor 2 2 E. Moderate severity TRA.M-01 Moderate
28 brachytherapy unit 1 2 F. Low severity BR.TH-03 Moderate
29 C-arm 1 2 F. Low severity C.ARM-01 Moderate
30 cath lab, SP 1 2 F. Low severity CATH-01 Moderate
31 clinical lab analyzer 1 2 F. Low severity C.L.A-01 Moderate
32 ECG recorder 1 2 F. Low severity ECG.R-01 Moderate
33 electrophysiology lab 1 2 F. Low severity EP.LB-01 Moderate
34 electrosurgical unit 1 2 F. Low severity ESU-01 Moderate
35 endoscope, specialty 1 2 F. Low severity ENDO-0x Moderate
36 gamma camera 1 2 F. Low severity G.CAM-01 Moderate
37 hemodialysis unit 1 2 F. Low severity HEMO-01 Moderate
38 hypo/ hyperthermia unit 1 2 F. Low severity HYPO-01 Moderate
39 infant warmer 1 2 F. Low severity IN.WA-01 Moderate
40 mammo unit 1 2 F. Low severity MAMO-01 Moderate
41 MRI scanner 1 2 F. Low severity MRI-01 Moderate
42 opthalmic laser 1 2 F. Low severity O.LAS-01 Moderate
43 peritoneal dialysis unit 1 2 F. Low severity P.DIA-01 Moderate
44 PET scanner 1 2 F. Low severity PET-01 Moderate
45 PET/ CT scanner 1 2 F. Low severity P.CT-01 Moderate
46 PET/ MRI scanner 1 2 F. Low severity P.MR-01 Moderate
47 special procedures room 1 2 F. Low severity S.PRO-01 Moderate
48 sterilizer 1 2 F. Low severity STER-01 Moderate
49 surgical laser 1 2 F. Low severity S.LAS-01 Moderate
50 thyroid uptake unit 1 2 F. Low severity TH.UP-01 Moderate
51 tomo room 1 2 F. Low severity TOMO--01 Moderate
52 xenon scintigraphy system 1 2 F. Low severity XE.SC-01 Moderate
53 blood gas analyzer 0 2 G. Very low severity BL.G.A-01 Moderate
54 blood pressure monitor (invasive) 0 2 G. Very low severity BP.M-01 Moderate
55 blood warmer 0 2 G. Very low severity BL.WA-01 Moderate
56 bone densitometer 0 2 G. Very low severity B.DEN-01 Moderate
57 EEG recorder 0 2 G. Very low severity EEG.R-01 Moderate
58 infusion pump 0 2 G. Very low severity INF.D-01 Moderate
59 lab microscope 0 2 G. Very low severity L.MIC-01 Moderate
60 phototherapy light 0 2 G. Very low severity PH.LI-01 Moderate
61 portable x-ray unit 0 2 G. Very low severity PORT-01 Moderate
62 R&F room 0 2 G. Very low severity R&F-01 Moderate
63 rad room 0 2 G. Very low severity RAD-01 Moderate
64 radiation dosimeter 0 2 G. Very low severity R.DOS-01 Moderate
65 radioisotope calibrator 0 2 G. Very low severity R.CAL-01 Moderate
66 ultrasound scanner 0 2 G. Very low severity ULTR-01 Moderate
67 cataract extraction unit 1 0 H. Lowest severity CAT.X-01 Low
68 contrast injector 1 0 H. Lowest severity C.INJ-01 Low
69 infant scale 0 1 H. Lowest severity IN.SC-01 Low
70 OR light 1 0 H. Lowest severity OR.LI-01 Low
71 ventilator 1 0 H. Lowest severity VENT-01 Low
72 autotransfusion unit 0 0 Non-critical AU.TR-01 Negligible or zero
73 hemodialysis blood pump 0 0 Non-critical HE.B.P.-01 Negligible or zero
74 exercise ergometer 0 0 Non-critical EX.ER-01 Negligible or zero
75 pulse oximeter 0 0 Non-critical P.OX-01 Negligible or zero
76 vital signs monitor 0 0 Non-critical VS.M-01 Negligible or zero
etc. etc. 0 0 Non-critical ETC-01


  • Devices in rows 1 - 20 (20 device types) are considered to be potentially high PM risk (potential outcome severity at level LOS 3)
  • Devices in rows 21 - 66 (46 device types) are considered to be potentially moderate PM risk (potential outcome severity at level LOS 2)
  • Devices in rows 67 - 71 (5 device types) are considered to be potentially low PM risk (potential outcome severity at level LOS 1)


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