Guideline for Prevention of Surgical Site Infection, 1999
Download the complete PDF version Guideline for Prevention of Surgical Site Infection, 1999 [PDF - 217 KB].
Table 7 Surgical Wound Classification
Class I/Clean: |
An uninfected operative wound in which no inflammation is encountered and the respiratory, alimentary, genital, or uninfected urinary tract is not entered. In addition, clean wounds are primarily closed and, if necessary, drained with closed drainage. Operative incisional wounds that follow nonpenetrating (blunt) trauma should be included in this category if they meet the criteria. |
|---|---|
Class II/Clean-Contaminated: |
An operative wound in which the respiratory, alimentary, genital, or urinary tracts are entered under controlled conditions and without unusual contamination. Specifically, operations involving the biliary tract, appendix, vagina, and oropharynx are included in this category, provided no evidence of infection or major break in technique is encountered. |
Class III/Contaminated: |
Open, fresh, accidental wounds. In addition, operations with major breaks in sterile technique (e.g., open cardiac massage) or gross spillage from the gastrointestinal tract, and incisions in which acute, nonpurulent inflammation is encountered are included in this category. |
Class IV/Dirty-Infected |
Old traumatic wounds with retained devitalized tissue and those that involve existing clinical infection or perforated viscera. This definition suggests that the organisms causing postoperative infection were present in the operative field before the operation. |
Garner JS1 and Simmons BP [2].
Table 8 Parameters For Operating Room Ventilation, American Institute Of Architects, 1996
| Temperature | 68-73°F, depending on normal ambient temperatures |
|---|---|
| Relative humidity | 30%-60% |
| Air movement | From “clean to less clean” areas |
| Air changes | Minimum 15 total air changes per hour Minimum 3 air changes of outdoor air per hour |
American Institute of Architects.[299]
Table 9 Parameters For Flash Sterilization Cycles, Association For The Advancement Of Medical Instrumentation
| Gravity-Displacement | Minimum Exposure Time and Temperature |
|---|---|
| Nonporous items | 3 min at 132°C (270°F) |
| Nonporous and porous items | 10 min at 132°C (270°F) |
| Prevacuum | Minimum Exposure Time and Temperature |
| Nonporous items | 3 min at 132°C (270°F) |
| Nonporous and porous items | 4 min at 132°C (270°F) |
Association for the Advancement of Medical Instrumentation. [321]
Table 10 Physical Status Classification, American Society Of Anesthesiologists*
| Code | Patient’s Preoperative Physical Status |
|---|---|
| 1 | Normally healthy patient |
| 2 | Patient with mild systemic disease |
| 3 | Patient with severe systemic disease that is not incapacitating |
| 4 | Patient with an incapacitating systemic disease that is a constant threat to life |
| 5 | Moribund patient who is not expected to survive for 24 hours with or without operation |
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