Illinois Hospital Report Card

and Consumer Guide to Health Care

Northwestern Medicine McHenry Hospital

Patient Safety - Surgical Site Infections (SSIs)

Surgical Site Infections (SSIs)

Presented below are data for surgical site infections associated with coronary artery bypass graft surgery (CABG) and total knee replacement surgery (KPROs) using the Standardized Infection Ratio (SIR) . Superficial and secondary surgical site infections are not included in the summary data below. Statewide summaries of surgical site infection data arranged by surgical procedure ( CABG , KPRO ) and hospital are also included.

Statistical Significance

Statistically significantly better than the national average or performing at the best possible rate

Not statistically significantly better or worse than the national average

Statistically significantly worse than the national average

Key	Description
46	Complete Reporting: Zero infections. Number of reported events is not significantly different than predicted
48	No Target Procedures Performed
114	Complete Reporting: Number of predicted events too low to calculate a precise SIR
117	Complete Reporting: Zero infections. Number of reported events is not significantly different than predicted
118	Complete Reporting: Zero infections. Number of predicted events too low to calculate a precise SIR
153	Complete Reporting: Zero infections. Number of predicted events too low to calculate a precise SIR
155	Complete Reporting: 20 or Fewer Procedures Performed

SSI Measure	Result	SIR
Total Knee Replacement Surgery Q1 2024 - Q4 2024 Result N/A infections, N/A procedures ⁴⁸ Rating SIR: N/A ⁴⁸	N/A infections, N/A procedures ⁴⁸	N/A ⁴⁸
Download Data Description Surgical Site Infections Associated with Total Knee Replacement Surgery Summarized as a Standardized Infection Ratio Historical Data
Measure	Result	Rating
Q1 2020 - Q4 2020 Result N/A infections, N/A procedures ⁴⁸ Rating SIR: N/A ⁴⁸	N/A infections, N/A procedures ⁴⁸	N/A ⁴⁸
Q1 2019 - Q4 2019 Result 0 infections, 1 procedures ¹⁵⁵ Rating SIR: N/A ¹⁵⁵	0 infections, 1 procedures ¹⁵⁵	N/A ¹⁵⁵
Q1 2018 - Q4 2018 Result 0 infections, 2 procedures ¹⁵⁵ Rating SIR: N/A ¹⁵⁵	0 infections, 2 procedures ¹⁵⁵	N/A ¹⁵⁵
Q1 2017 - Q4 2017 Result 0 infections, 186 procedures ¹⁵³ Rating SIR: N/A ¹⁵³	0 infections, 186 procedures ¹⁵³	N/A ¹⁵³
Q1 2016 - Q4 2016 Result 4 infections, 505 procedures Rating SIR: 1.83	4 infections, 505 procedures	1.83
Q1 2015 - Q4 2015 Result 1 infections, 577 procedures Rating SIR: 0.30	1 infections, 577 procedures	0.30
Q1 2014 - Q4 2014 Result 0 infections, 358 procedures Rating SIR: 0.00	0 infections, 358 procedures	0.00
Q3 2013 - Q2 2014 Result 0 infections, 205 procedures ¹¹⁷ Rating SIR: 0.00 ¹¹⁷	0 infections, 205 procedures ¹¹⁷	0.00 ¹¹⁷
Q3 2012 - Q2 2013 Result 0 infections, 225 procedures ¹¹⁷ Rating SIR: 0.00 ¹¹⁷	0 infections, 225 procedures ¹¹⁷	0.00 ¹¹⁷
Q3 2011 - Q2 2012 Result 0 infections, 212 procedures ⁴⁶ Rating SIR: 0.00 ⁴⁶	0 infections, 212 procedures ⁴⁶	0.00 ⁴⁶
Q3 2010 - Q2 2011 Result 0 infections, 233 procedures ⁴⁶ Rating SIR: 0.00 ⁴⁶	0 infections, 233 procedures ⁴⁶	0.00 ⁴⁶
Coronary Artery Bypass Graft Surgery Q1 2025 - Q4 2025 Result 1 infections, 216 procedures Rating SIR: 0.83	1 infections, 216 procedures	0.83
Download Data Description Surgical Site Infections Associated with Coronary Artery Bypass Graft Surgery Summarized as a Standardized Infection Ratio Historical Data
Measure	Result	Rating
Q1 2024 - Q4 2024 Result 0 infections, 203 procedures ¹¹⁷ Rating SIR: 0.00 ¹¹⁷	0 infections, 203 procedures ¹¹⁷	0.00 ¹¹⁷
Q1 2023 - Q4 2023 Result 1 infections, 179 procedures Rating SIR: 0.66	1 infections, 179 procedures	0.66
Q1 2022 - Q4 2022 Result 0 infections, 164 procedures ¹¹⁷ Rating SIR: 0.00 ¹¹⁷	0 infections, 164 procedures ¹¹⁷	0.00 ¹¹⁷
Q1 2021 - Q4 2021 Result 0 infections, 135 procedures ¹¹⁷ Rating SIR: 0.00 ¹¹⁷	0 infections, 135 procedures ¹¹⁷	0.00 ¹¹⁷
Q1 2020 - Q4 2020 Result 0 infections, 65 procedures ¹¹⁸ Rating SIR: N/A ¹¹⁸	0 infections, 65 procedures ¹¹⁸	N/A ¹¹⁸
Q1 2019 - Q4 2019 Result 0 infections, 68 procedures ¹⁵³ Rating SIR: N/A ¹⁵³	0 infections, 68 procedures ¹⁵³	N/A ¹⁵³
Q1 2018 - Q4 2018 Result 2 infections, 129 procedures ¹¹⁴ Rating SIR: N/A ¹¹⁴	2 infections, 129 procedures ¹¹⁴	N/A ¹¹⁴
Q1 2016 - Q4 2016 Result 7 infections, 158 procedures Rating SIR: 5.05	7 infections, 158 procedures	5.05
Q1 2015 - Q4 2015 Result 0 infections, 143 procedures ¹¹⁷ Rating SIR: 0.00 ¹¹⁷	0 infections, 143 procedures ¹¹⁷	0.00 ¹¹⁷
Q1 2014 - Q4 2014 Result 2 infections, 131 procedures Rating SIR: 1.05	2 infections, 131 procedures	1.05
Q3 2013 - Q2 2014 Result 1 infections, 122 procedures Rating SIR: 0.58	1 infections, 122 procedures	0.58
Q3 2012 - Q2 2013 Result 0 infections, 103 procedures ¹¹⁷ Rating SIR: 0.00 ¹¹⁷	0 infections, 103 procedures ¹¹⁷	0.00 ¹¹⁷
Q3 2011 - Q2 2012 Result 0 infections, 121 procedures ⁴⁶ Rating SIR: 0.00 ⁴⁶	0 infections, 121 procedures ⁴⁶	0.00 ⁴⁶
Q3 2010 - Q2 2011 Result 0 infections, 136 procedures ⁴⁶ Rating SIR: 0.00 ⁴⁶	0 infections, 136 procedures ⁴⁶	0.00 ⁴⁶