scholarly journals Diagnostic Stewardship Effectively Reduces Healthcare-Onset Clostridioides difficile Infections and Concurrent Laxative Use

2020 ◽  
Vol 41 (S1) ◽  
pp. s189-s191
Author(s):  
Dipesh Solanky ◽  
Ian Drobish ◽  
Derek Juang ◽  
Scott Johns ◽  
Sanjay Mehta ◽  
...  
Keyword(s):  
Enteral Feeding ◽  
Demographic Data ◽  
Healthcare Facility ◽  
The United States ◽  
Nucleic Acid Amplification ◽  
Fiscal Year ◽  
Medication Cost ◽  
Laxative Use ◽  
Clostridioides Difficile ◽  
Test Ordering

Background:Clostridioides difficile infection (CDI) accounts for >500,000 community-, nursing-, and hospital-acquired infections (HAIs), as well as 15,000–30,000 deaths, and =$4.8 billion in the United States annually. C. difficile toxin B gene nucleic acid amplification testing (NAAT) cannot distinguish between active CDI and colonization, particularly in the setting of laxative use or enteral feeding. Lack of judicious testing can result in the incorrect diagnosis of CDI, unnecessary CDI treatment, increased costs, and falsely augmented HAI rates. Like many healthcare facilities, the VA San Diego Healthcare System (VASDHS) solely utilizes C. difficile NAAT for CDI diagnosis. The aim of this study was to implement and evaluate a facility-wide initiative at the VASDHS to reduce healthcare onset, healthcare facility associated CDI (HO-HCFA CDI), including the use of a test ordering algorithm. Methods: From fiscal year (FY) 2015–2018, various measures were implemented including a hand hygiene initiative, reduction in fluoroquinolone usage, prompt isolation of patients with CDI, thorough terminal cleaning of rooms, and, lastly, a test-ordering algorithm starting FY2018. A retrospective study was performed to assess VASDHS HO-HCFA CDI case incidence, risk factors for infection, laxative or enteral feeding use at the time of testing, and CDI treatment. Results: Patient demographic data, medical history, CDI history, laxative use, treatment, and cost of CDI treatment were reviewed. From 2015 to 2018, 127 cases of HO-HCFA CDI were identified. The total number of HO-HCFA CDI cases and medication cost for CDI treatment were dramatically reduced from 2017 to 2018 following implementation of the test-ordering algorithm (Table 1, Fig. 1). This trend corresponded to a significant reduction in median HO-HCFA CDI cases per month (P = .02), medication cost of CDI treatment (P = .02), and proton pump inhibitor (PPI) use at the time of testing (P = .01). The number of positive HO-HCFA CDI cases associated with laxative use or escalation at the time of CDI testing (accounting for those on chronic laxatives) also decreased across the study period—most dramatically from 2015 vs 2016 (20 vs 14) and 2017 vs 2018 (11 vs 4) (Table 1). Conclusions: At the VASDHS, diagnostic stewardship of C. difficile NAAT with the use of a test-ordering algorithm significantly reduced HO-HCFA CDI incidence and treatment cost. This trend also corresponded with significantly less PPI use at the time of testing and reduced detection of colonization among patients with laxative-induced diarrhea. Diagnostic stewardship may serve as an effective tool to correctly diagnose and treat HO-HCFA CDI, while significantly reducing treatment costs.Funding: NoneDisclosures: None

Using diagnostic stewardship to reduce rates, healthcare expenditures and accurately identify cases of hospital-onset Clostridioides difficile infection

2020 ◽  
Vol 42 (1) ◽  
pp. 51-56
Author(s):  
Dipesh Solanky ◽  
Derek K. Juang ◽  
Scott T. Johns ◽  
Ian C. Drobish ◽  
Sanjay R. Mehta ◽  
...  
Keyword(s):  
Healthcare Facility ◽  
Nucleic Acid Amplification ◽  
Fiscal Year ◽  
Hospital Acquired Infection ◽  
Laxative Use ◽  
Clostridioides Difficile ◽  
Hospitalization Costs ◽  
Clostridioides Difficile Infection ◽  
Hospital Acquired ◽  
Hospital Days

AbstractObjective:Lack of judicious testing can result in the incorrect diagnosis of Clostridioides difficile infection (CDI), unnecessary CDI treatment, increased costs and falsely augmented hospital-acquired infection (HAI) rates. We evaluated facility-wide interventions used at the VA San Diego Healthcare System (VASDHS) to reduce healthcare-onset, healthcare-facility–associated CDI (HO-HCFA CDI), including the use of diagnostic stewardship with test ordering criteria.Design:We conducted a retrospective study to assess the effectiveness of measures implemented to reduce the rate of HO-HCFA CDI at the VASDHS from fiscal year (FY)2015 to FY2018.Interventions:Measures executed in a stepwise fashion included a hand hygiene initiative, prompt isolation of CDI patients, enhanced terminal room cleaning, reduction of fluoroquinolone and proton-pump inhibitor use, laboratory rejection of solid stool samples, and lastly diagnostic stewardship with C. difficile toxin B gene nucleic acid amplification testing (NAAT) criteria instituted in FY2018.Results:From FY2015 to FY2018, 127 cases of HO-HCFA CDI were identified. All rate-reducing initiatives resulted in decreased HO-HCFA cases (from 44 to 13; P ≤ .05). However, the number of HO-HCFA cases (34 to 13; P ≤ .05), potential false-positive testing associated with colonization and laxative use (from 11 to 4), hospital days (from 596 to 332), CDI-related hospitalization costs (from $2,780,681 to $1,534,190) and treatment cost (from $7,158 vs $1,476) decreased substantially following the introduction of diagnostic stewardship with test criteria from FY2017 to FY2018.Conclusions:Initiatives to decrease risk for CDI and diagnostic stewardship of C. difficile stool NAAT significantly reduced HO-HCFA CDI rates, detection of potential false-positives associated with laxative use, and lowered healthcare costs. Diagnostic stewardship itself had the most dramatic impact on outcomes observed and served as an effective tool in reducing HO-HCFA CDI rates.

scholarly journals Analysis of National Healthcare Safety Network Clostridioides difficile Infection Standardized Infection Ratio by Test Type

2020 ◽  
Vol 41 (S1) ◽  
pp. s116-s118
Author(s):  
Qunna Li ◽  
Andrea Benin ◽  
Alice Guh ◽  
Margaret A. Dudeck ◽  
Katherine Allen-Bridson ◽  
...  
Keyword(s):  
Risk Adjustment ◽  
Healthcare Facility ◽  
Directional Pattern ◽  
Incidence Rates ◽  
Nucleic Acid Amplification ◽  
Test Type ◽  
Clostridioides Difficile ◽  
Clostridioides Difficile Infection ◽  
The Mean ◽  
The Difference

Background: The NHSN has used positive laboratory tests for surveillance of Clostridioides difficile infection (CDI) LabID events since 2009. Typically, CDIs are detected using enzyme immunoassays (EIAs), nucleic acid amplification tests (NAATs), or various test combinations. The NHSN uses a risk-adjusted, standardized infection ratio (SIR) to assess healthcare facility-onset (HO) CDI. Despite including test type in the risk adjustment, some hospital personnel and other stakeholders are concerned that NAAT use is associated with higher SIRs than are EIAs. To investigate this issue, we analyzed NHSN data from acute-care hospitals for July 1, 2017 through June 30, 2018. Methods: Calendar quarters for which CDI test type was reported as NAAT (includes NAAT, glutamate dehydrogenase (GDH)+NAAT and GDH+EIA followed by NAAT if discrepant) or EIA (includes EIA and GDH+EIA) were selected. HO CDI SIRs were calculated for facility-wide inpatient locations. We conducted the following analyses: (1) Among hospitals that did not switch their test type, we compared the distribution of HO incident rates and SIRs by those reporting NAAT vs EIA. (2) Among hospitals that switched their test type, we selected quarters with a stable switch pattern of 2 consecutive quarters of each of EIA and NAAT (categorized as pattern EIA-to-NAAT or NAAT-to-EIA). Pooled semiannual SIRs for EIA and NAAT were calculated, and a paired t test was used to evaluate the difference of SIRs by switch pattern. Results: Most hospitals did not switch test types (3,242, 89%), and 2,872 (89%) reported sufficient data to calculate SIRs, with 2,444 (85%) using NAAT. The crude pooled HO CDI incidence rates for hospitals using EIA clustered at the lower end of the histogram versus rates for NAAT (Fig. 1). The SIR distributions of both NAAT and EIA overlapped substantially and covered a similar range of SIR values (Fig. 1). Among hospitals with a switch pattern, hospitals were equally likely to have an increase or decrease in their SIR (Fig. 2). The mean SIR difference for the 42 hospitals switching from EIA to NAAT was 0.048 (95% CI, −0.189 to 0.284; P = .688). The mean SIR difference for the 26 hospitals switching from NAAT to EIA was 0.162 (95% CI, −0.048 to 0.371; P = .124). Conclusions: The pattern of SIR distributions of both NAAT and EIA substantiate the soundness of NHSN risk adjustment for CDI test types. Switching test type did not produce a consistent directional pattern in SIR that was statistically significant.Disclosures: NoneFunding: None

scholarly journals Analysis of National Healthcare Safety Network Clostridioides difficile Infection Standardized Infection Ratio by Test Type

2020 ◽  
Vol 41 (S1) ◽  
pp. s87-s89
Author(s):  
Qunna Li ◽  
Andrea Benin ◽  
Alice Guh ◽  
Margaret Dudeck ◽  
Katherine Allen-Bridson ◽  
...  
Keyword(s):  
Risk Adjustment ◽  
Healthcare Facility ◽  
Directional Pattern ◽  
Incidence Rates ◽  
Nucleic Acid Amplification ◽  
Test Type ◽  
National Healthcare ◽  
Clostridioides Difficile ◽  
National Healthcare Safety Network ◽  
The Mean

Background: The National Healthcare Safety Network (NHSN) has used positive laboratory tests for surveillance of Clostridioides difficile infection (CDI) LabID events since 2009. Typically, CDIs are detected using enzyme immunoassays (EIAs), nucleic acid amplification tests (NAATs), or various test combinations. The NHSN uses a risk-adjusted, standardized infection ratio (SIR) to assess healthcare facility-onset (HO) CDI. Despite including test type in the risk adjustment, some hospital personnel and other stakeholders are concerned that NAAT use is associated with higher SIRs than EIA use. To investigate this issue, we analyzed NHSN data from acute-care hospitals for July 1, 2017, through June 30, 2018. Methods: Calendar quarters where CDI test type was reported as NAAT (includes NAAT, glutamate dehydrogenase (GDH)+NAAT and GDH+EIA followed by NAAT if discrepant) or EIA (includes EIA and GDH+EIA) were selected. HO-CDI SIRs were calculated for facility-wide inpatient locations. We conducted the following 2 analyses: (1) Among hospitals that did not switch their test type, we compared the distribution of HO incident rates and SIRs by those reporting NAAT versus EIA. (2) Among hospitals that switched their test type, we selected quarters with a stable switch pattern of 2 consecutive quarters of each of EIA and NAAT (categorized as EIA-to-NAAT or NAAT-to-EIA). Pooled semiannual SIRs for EIA and NAAT were calculated, and a paired t test was used to evaluate the difference in SIRs by switch pattern. Results: Most hospitals did not switch test types (3,242, 89%), and 2,872 (89%) reported sufficient data to calculate an SIR, with 2,444 (85%) using NAAT. The crude pooled HO CDI incidence rates for hospitals using EIAs clustered at the lower end of the histogram versus rates for NAATs (Fig. 1). The SIR distributions, both NAATs and EIAs, overlapped substantially and covered a similar range of SIR values (Fig. 1). Among hospitals with a switch pattern, hospitals were equally likely to have an increase or decrease in their SIRs (Fig. 2). The mean SIR difference for the 42 hospitals switching from EIA to NAAT was 0.048 (95% CI, −0.189 to 0.284; P = .688). The mean SIR difference for the 26 hospitals switching from NAAT to EIA was 0.162 (95% CI, −0.048 to 0.371; P = .124). Conclusions: The pattern of SIR distribution for both NAAT and EIA substantiate the soundness of the NHSN’s risk adjustment for CDI test types. Switching test type did not produce a consistent directional pattern in SIR that was statistically significant.Funding: NoneDisclosures: None

scholarly journals 730. Severity Of Clostridioides difficile Infection Based On Toxin Analysis, Acid Suppressant Medications and Antibiotics

2020 ◽  
Vol 7 (Supplement_1) ◽  
pp. S415-S416
Author(s):  
Gayathri Krishnan ◽  
Richa Parikh ◽  
Anna N Witt ◽  
Kulsum Bano ◽  
Sudeepa Bhattacharyya ◽  
...  
Keyword(s):  
Health Care ◽  
Medical Center ◽  
The United States ◽  
Nucleic Acid Amplification ◽  
Clinical Severity ◽  
Toxin Gene ◽  
Antibiotic Exposure ◽  
Toxin B ◽  
Major Health Problem ◽  
Clostridioides Difficile

Abstract Background Clostridioides difficile (C difficile) infection (CDI) is a major health problem in the United States and despite updated guidelines, the laboratory diagnosis remains vexed. A multistep algorithm is recommended to diagnose CDI that includes antigen, toxin and toxin gene Nucleic Acid Amplification (NAAT) assays. This study was done to assess severity of CDI based on toxin B and NAAT statuses. The other objective was to analyze if antibiotics and PPI/H2B (Proton Pump Inhibitors and H2 blockers) affected severity of CDI. Methods Retrospective analysis of all adult patients admitted to a tertiary medical center with diarrhea and a positive C difficile antigen test from 01/2017- 12/2017. From more than 2000 stool samples submitted to the lab, C diff antigen was positive in 265 patients. 191 were diagnosed with CDI based on the 2-step algorithm. Clinical data was available for 168 patients. Severity of CDI was determined based on published guidelines. Fischer’s exact test was used for statistical analysis. Results The mean age at diagnosis was 55.96. Toxin B was detected in 34% (57/168) patients and Toxin NAAT positive in 66% (111/168) patients. 57% of CDI was health care onset compared to 43% with community onset. 42% (72/168) were classified as severe out of which 40.2% (29) were toxin B positive, and 59.8% (43) were NAAT positive. There were no significant differences in severity of CDI based on toxin B and NAAT status (50.9% vs 38.4%, p=0.14). 46% of cases from community vs 39.6% from hospitals were classified as severe CDI (p=0.415). 72% of cases had antibiotic use in the last 30 days. Use of antibiotics was significantly associated with severe CDI (82% vs 64%, p=0.015). 62.5% (105) patients had history of PPI/H2B use and severity was not significantly associated with its use (p=0.872). Conclusion Our study shows that the presence of toxin did not significantly impact the clinical severity of CDI. The use of antibiotics did not affect the presence of toxin although the total number of CDI cases with previous antibiotic exposure was high. Patients who had recent antibiotic exposure were more likely to have severe clinical presentation. More toxin positive cases were health care onset but the effect was not pronounced. Severity of CDI did not significantly depend on health care onset or on exposure to PPI/H2B. Disclosures Atul Kothari, MD, Ansun Biopharma (Consultant)

scholarly journals Successful Diagnostic Stewardship for Clostridioides difficile Testing in Pediatrics

2020 ◽  
Vol 41 (S1) ◽  
pp. s394-s394
Author(s):  
Katia Halabi ◽  
Lisa Saiman ◽  
Philip Zachariah ◽  
Karen Acker ◽  
Jean-Marie Cannon ◽  
...  
Keyword(s):  
Healthcare Facility ◽  
Nucleic Acid Amplification ◽  
Clinical Microbiology Laboratory ◽  
Free Standing ◽  
Children's Hospital ◽  
Clostridioides Difficile ◽  
Young Infants ◽  
Before And After ◽  
Children’S Hospital ◽  
Testing Algorithm

Background: As many as 40% of infants aged ≤12 months and 10%–28% of children aged 13–24 months are colonized by Clostridioides difficile. The IDSA and the SHEA recommend that testing should never be routinely recommended for infants ≤12 months of age and should not be routinely performed for children 1–2 years of age unless other causes are excluded. We report implementation of C. difficile diagnostic stewardship at 2 children’s hospitals. Methods: We implemented age-based restrictions for C. difficile testing at hospital A (∼200-bed, free-standing, children’s hospital) and hospital B (∼100-bed children’s hospital within a larger hospital). Both sites are part of the same multicampus institution, and both used nucleic acid amplification testing to detect C. difficile throughout the study. In May 2018, we implemented an electronic order set for C. difficile that provided alerts to avoid testing young infants and patients with recent use of laxatives, stool softeners, or enemas, but providers could order C. difficile testing at their discretion. In October 2018, we implemented a more restrictive diagnostic stewardship algorithm for C. difficile. No testing was allowed for infants aged ≤12 months. Approval pediatric infectious diseases staff was required to test children aged 13–24 months. Pathology resident approval was required to test children aged ≥24 months who had received laxatives, stool softeners, or enemas within ≤24 hours. Clinical microbiology laboratory supervisors reinforced rejection of nondiarrheal stool specimens for testing. Providers at both campuses were informed about the new testing guidelines by e-mail. We compared the number of tests sent and positive cases of healthcare facility-onset C. difficile (HO-CDI) by age strata before and after the implementation of the restrictive testing algorithm. Results: After the intervention, the number of tests in infants significantly declined; 2 infants aged ≤12 months and 4 infants aged 13–24 months were tested for C. difficile (Table). After the intervention, the number of tests per month declined at hospital A, as did the number of HO-CDI cases at both hospitals. Rejections of nondiarrheal stools significantly increased after the intervention (P < .001). Conclusions:C. difficile diagnostic stewardship for children was successfully implemented using a rule-based alert system in the electronic health record. This intervention was associated with a reduced number of tests sent and cases of HO-CDI. This strategy was cost-saving and prevented misdiagnosis, unnecessary antibiotic therapy, and overestimation of HO-CDI rates.Funding: NoneDisclosures: None

scholarly journals Effect of Testing Methods on Incidence of Clostridioides difficle Infection Rates in Veterans’ Affairs Medical Centers

2020 ◽  
Vol 41 (S1) ◽  
pp. s201-s202
Author(s):  
Brian McCauley ◽  
Loretta Simbartl ◽  
Martin Evans ◽  
Shantini Gamage ◽  
Gary Roselle
Keyword(s):  
Acute Care ◽  
Diagnostic Testing ◽  
Care Facility ◽  
Healthcare Facility ◽  
Veterans Affairs ◽  
Nucleic Acid Amplification ◽  
Fiscal Year ◽  
Statistical Regression ◽  
Testing Methods ◽  
Therapeutic Decisions

Background: Healthcare-associated Clostridioides difficile infection (CDI) rates have been decreasing in Department of Veterans’ Affairs (VA) acute-care medical facilities since the CDI Prevention Initiative began in 2012. Assessment of rates, however, is complicated by changing surveillance definitions and diagnostics. Over the past 2 years, the VA has adopted the less stringent surveillance definitions of the NHSN for hospital-onset healthcare-facility–associated (HO-HCFA) CDI (onset on or after day 4 of hospitalization) than was originally used (>48 hours after admission). New diagnostic testing methods have been developed, but variabilities in the reliability of testing methods for the diagnosis of CDI in patients have been detected, thus not yielding a gold standard test. As a result, some facilities use nucleic acid amplification testing (NAAT) for CDI diagnosis and reporting whereas others use a 2-step process of NAAT followed by a toxin enzyme immunoassay (EIA) test, with the latter determining positivity for reporting (as allowed by the NHSN). We reviewed CDI rates at facilities performing one-step and two-step testing to determine whether the testing protocol may be influencing CDI rate reporting. Methods: Data on HO-HCFA CDI rates entered monthly in fiscal year (FY) 2018 (October 2017 through September 2018) and FY2019 (October 2018 through September 2019) by each acute-care facility into the VA Inpatient Evaluation Center (IPEC) database were analyzed. HO-HCFA CDI rates in facilities that used NAAT in FY2018 and switched to in the 2-step NAAT plus EIA in FY2019 were compared to rates in facilities used NAAT alone for both FY2018 and FY2019. Statistical regression analysis was performed. Results: From FY 2018 through FY2019, 70 facilities performed NAAT for the entire 2-year period. Overall, 7 facilities performed NAAT for FY 2018 and then switched to NAAT + EIA in FY2019. We detected no significant decrease in HO-HCFA CDI rates in FY 2018 when both groups were using NAAT (P = 0.21) (Fig. 1). However, in FY2019, there was a significant decrease in HO-HCFA CDI rates for those facilities that performed the 2-step testing versus those facilities that continued to use strictly NAAT alone (P < .0001). Conclusions: HO-HCFA CDI rates decreased for those VA acute-care facilities that switched to 2-step testing, and this finding highlights implications for assessing rates over time. Given the variable reliability of the toxin test, individual patient consideration for therapeutic decisions is reasonable.Funding: NoneDisclosures: None

scholarly journals Clostridioides difficile Testing Stewardship for Laxative Use Is Effective and Safe When Combined With Expert Clinical Input

2020 ◽  
Vol 41 (S1) ◽  
pp. s169-s170
Author(s):  
Francesca Torriani ◽  
Frank Myers Robert El-Kareh ◽  
Minji Kang ◽  
Randy Taplitz ◽  
Shira Abeles
Keyword(s):  
Best Practice ◽  
Medical Center ◽  
Academic Medical Center ◽  
Adverse Outcomes ◽  
Nucleic Acid Amplification ◽  
The Past ◽  
Laxative Use ◽  
Clostridioides Difficile ◽  
Practice Advisory ◽  
Expert Input

Background: In January 2019, our large academic medical center implemented hard stops for ordering Clostridiodes difficile nucleic acid amplification testing (NAAT), and required a discussion with an infectious diseases physician if the order was placed in a clinical scenario not consistent with the 2017 IDSA/SHEA C. difficile infection (CDI) testing guidelines. Recently, some groups have expressed concerns that requiring the discontinuation of laxatives may delay the diagnosis of CDI and result in serious adverse outcomes. Methods:C. difficile testing stewardship interventions were performed at 2 hospitals within the same university health system to reduce inappropriate testing. In January 2019, a best practice advisory (BPA) was implemented to alert providers ordering C. difficile NAAT if patients had received laxatives within 24 hours, requiring a discussion with the ID physician to override the hard stop. We reviewed clinical outcomes of patients who had a BPA alert due to laxative use within the past 24 hours April 23 to October 23, 2019. Results: During the study period, there were 235 patients with a BPA because of laxative use within the past 24 hours. Moreover, 55 (23.4%) continued to experience diarrhea after the discontinuation of laxatives and were retested for CDI within 7 days. Only 8 tests returned positive, suggesting that, at most, 3.4% of cases had delayed diagnoses because of the hard stop. This finding is supported by the increase in the percentage of tests positive from 11.6% observed overall to 14.6% (8 of 55) after this intervention. There were no severe CDI cases (ICU admission, colectomy, or death) among patients who had delayed testing due to laxative use. Conclusions: In the setting of laxative use, C. difficile testing stewardship interventions with C. difficile NAAT using a hard-stop BPA are effective in reducing unnecessary testing and safe if they are used in combination with a real-time expert input of the risk of clinical disease.Funding: NoneDisclosures: None

Public Libraries in the United States: Fiscal Year 2001

2003 ◽  
Author(s):  
Adrienne Chute ◽  
◽  
P. Elaine Kroe ◽  
Patricia O'Shea ◽  
Maria Polcari ◽  
...  
Keyword(s):  
United States ◽  
Public Libraries ◽  
The United States ◽  
Fiscal Year

Public Libraries in the United States: Fiscal Year 1999

2002 ◽  
Author(s):  
Adrienne Chute ◽  
P. Elaine Kroe ◽  
Patricia Garner ◽  
Maria Polcari ◽  
Cynthia Jo Ramsey
Keyword(s):  
United States ◽  
Public Libraries ◽  
The United States ◽  
Fiscal Year

Operation of a hyperbaric oxygen therapy center in Korea: Report of our experience from a setting in its nascent stages

2019 ◽  
pp. 135-143
Author(s):  
Yoon Seop Kim ◽  
Yoonsuk Lee ◽  
Sun Ju Kim ◽  
Sung Oh Hwang ◽  
Yong Sung Cha ◽  
...  
Keyword(s):  
Critically Ill ◽  
Hyperbaric Oxygen ◽  
Critically Ill Patients ◽  
Demographic Data ◽  
Developed Countries ◽  
The United States ◽  
Medical Society ◽  
Hyperbaric Medicine ◽  
Therapy Center ◽  
Hbo2 Therapy

Purpose: Hyperbaric medicine is nascent in Korea when compared to other developed countries, such as the United States and Japan. Our facility has been managed by physicians with certifications from the Undersea and Hyperbaric Medical Society (UHMS) and National Oceanic and Atmospheric Administration in diving and clinical diseases since October 2016. This study was conducted to share similar issues that are encountered during the establishment of a program in a new area through our experiences in the operation of a hyperbaric oxygen (HBO2) therapy center. Methods: In this retrospective observational study we collected data on HBO2 patients treated at our center between October 2016 and June 2018 after HBO2 was conducted by HBO2-certified physicians. We then compared demographic data of patients with data from January 2011 to September 2015 – before HBO2 operations were conducted by HBO2-certified physicians. Result: A total of 692 patients received 5,130 treatments. Twelve indicated diseases were treated using HBO2 therapy. Fifty-six critically ill patients with intubation received HBO2. Although two patients experienced seizure due to oxygen toxicity during the study period, certified physicians and inside attendant took immediate corrective action. Conclusion: After the establishment of the HBO2 center operated by physicians with certification, more patients, including critically ill patients, received HBO2 safely for various diseases. In order to improve the practice of hyperbaric medicine in Korea, the Korean Academy of Undersea and Hyperbaric Medicine (KAUHM), an advanced and well-organized academic society, should communicate often with HBO2 centers, with the aim to set Korean education programs at UHMS course levels and increase reimbursement for HBO2 therapy.

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