Illinois Hospital Report Card

and Consumer Guide to Health Care

Northwestern Memorial 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
117	Complete Reporting: Zero infections. Number of reported events is not significantly different than predicted

SSI Measure	Result	SIR
Total Knee Replacement Surgery Q1 2024 - Q4 2024 Result 0 infections, 893 procedures Rating SIR: 0.00	0 infections, 893 procedures	0.00
Description Surgical Site Infections Associated with Total Knee Replacement Surgery Summarized as a Standardized Infection Ratio Historical Data
Measure	Result	Rating
Q1 2023 - Q4 2023 Result 0 infections, 895 procedures Rating SIR: 0.00	0 infections, 895 procedures	0.00
Q1 2022 - Q4 2022 Result 1 infections, 693 procedures Rating SIR: 0.31	1 infections, 693 procedures	0.31
Q1 2021 - Q4 2021 Result 3 infections, 704 procedures Rating SIR: 0.92	3 infections, 704 procedures	0.92
Q1 2020 - Q4 2020 Result 1 infections, 508 procedures Rating SIR: 0.41	1 infections, 508 procedures	0.41
Q1 2019 - Q4 2019 Result 5 infections, 780 procedures Rating SIR: 1.32	5 infections, 780 procedures	1.32
Q1 2018 - Q4 2018 Result 2 infections, 752 procedures Rating SIR: 0.61	2 infections, 752 procedures	0.61
Q1 2017 - Q4 2017 Result 5 infections, 715 procedures Rating SIR: 1.68	5 infections, 715 procedures	1.68
Q1 2016 - Q4 2016 Result 4 infections, 705 procedures Rating SIR: 1.45	4 infections, 705 procedures	1.45
Q1 2015 - Q4 2015 Result 3 infections, 653 procedures Rating SIR: 0.61	3 infections, 653 procedures	0.61
Q1 2014 - Q4 2014 Result 3 infections, 663 procedures Rating SIR: 0.62	3 infections, 663 procedures	0.62
Q3 2013 - Q2 2014 Result 1 infections, 642 procedures Rating SIR: 0.22	1 infections, 642 procedures	0.22
Q3 2012 - Q2 2013 Result 3 infections, 848 procedures Rating SIR: 0.51	3 infections, 848 procedures	0.51
Q3 2011 - Q2 2012 Result 2 infections, 967 procedures Rating SIR: 0.32	2 infections, 967 procedures	0.32
Q3 2010 - Q2 2011 Result 3 infections, 1028 procedures Rating SIR: 0.43	3 infections, 1028 procedures	0.43
Coronary Artery Bypass Graft Surgery Q1 2024 - Q4 2024 Result 3 infections, 392 procedures Rating SIR: 0.75	3 infections, 392 procedures	0.75
Description Surgical Site Infections Associated with Coronary Artery Bypass Graft Surgery Summarized as a Standardized Infection Ratio Historical Data
Measure	Result	Rating
Q1 2023 - Q4 2023 Result 0 infections, 347 procedures Rating SIR: 0.00	0 infections, 347 procedures	0.00
Q1 2022 - Q4 2022 Result 1 infections, 301 procedures Rating SIR: 0.33	1 infections, 301 procedures	0.33
Q1 2021 - Q4 2021 Result 0 infections, 253 procedures ¹¹⁷ Rating SIR: 0.00 ¹¹⁷	0 infections, 253 procedures ¹¹⁷	0.00 ¹¹⁷
Q1 2020 - Q4 2020 Result 1 infections, 156 procedures Rating SIR: 0.49	1 infections, 156 procedures	0.49
Q1 2019 - Q4 2019 Result 1 infections, 246 procedures Rating SIR: 0.36	1 infections, 246 procedures	0.36
Q1 2018 - Q4 2018 Result 3 infections, 250 procedures Rating SIR: 1.15	3 infections, 250 procedures	1.15
Q1 2016 - Q4 2016 Result 0 infections, 225 procedures ¹¹⁷ Rating SIR: 0.00 ¹¹⁷	0 infections, 225 procedures ¹¹⁷	0.00 ¹¹⁷
Q1 2015 - Q4 2015 Result 5 infections, 228 procedures Rating SIR: 1.52	5 infections, 228 procedures	1.52
Q1 2014 - Q4 2014 Result 2 infections, 244 procedures Rating SIR: 0.55	2 infections, 244 procedures	0.55
Q3 2013 - Q2 2014 Result 1 infections, 252 procedures Rating SIR: 0.27	1 infections, 252 procedures	0.27
Q3 2012 - Q2 2013 Result 1 infections, 229 procedures Rating SIR: 0.29	1 infections, 229 procedures	0.29
Q3 2011 - Q2 2012 Result 1 infections, 241 procedures Rating SIR: 0.30	1 infections, 241 procedures	0.30
Q3 2010 - Q2 2011 Result 1 infections, 290 procedures Rating SIR: 0.25	1 infections, 290 procedures	0.25