Canadian quality indicators for percutaneous coronary interventions

Regional variations in primary percutaneous coronary intervention for acute myocardial infarction patients: A trajectory analysis using the national claims database in Japan

BACKGROUND

Previous studies have demonstrated geographical disparities regarding the quality of care for acute myocardial infarction (AMI). The aim of this study was two-fold: first, to calculate the proportion of patients with AMI who received primary percutaneous coronary interventions (pPCIs) by secondary medical areas (SMAs), which provide general inpatient care, as a quality indicator (QI) of the process of AMI practice. Second, to identify patterns in their trajectories and to investigate the factors related to regional differences in their trajectories.

METHODS

We included patients hospitalized with AMI between April 2014 and March 2020 from the national health insurance claims database in Japan and calculated the proportion of pPCIs across 335 SMAs and fiscal years. Using these proportions, we conducted group-based trajectory modeling to identify groups that shared similar trajectories of the proportions. In addition, we investigated area-level factors that were associated with the different trajectories.

RESULTS

The median (interquartile range) proportions of pPCIs by SMAs were 63.5% (52.9% to 70.5%) in FY 2014 and 69.6% (63.3% to 74.2%) in FY 2020. Four groups, named low to low (LL; n = 48), low to middle (LM; n = 16), middle to middle (MM; n = 68), and high to high (HH; n = 208), were identified from our trajectory analysis. The HH and MM groups had higher population densities and higher numbers of physicians and cardiologists per capita than the LL and LM groups. The LL and LM groups had similar numbers of physicians per capita, but the number of cardiologists per capita in the LM group increased over the years of the study compared with the LL group.

CONCLUSION

The trajectory of the proportion of pPCIs for AMI patients identified groups of SMAs. Among the four groups, the LM group showed an increasing trend in the proportions of pPCIs, whereas the three other groups showed relatively stable trends.

Advancements in Percutaneous Coronary Intervention Techniques: A Comprehensive Literature Review of Mixed Studies and Practice Guidelines

Percutaneous coronary intervention (PCI) is a widely used therapy for coronary artery disease (CAD), but it carries risks and complications. Adhering to evidence-based practice guidelines is crucial for optimal outcomes. This review compares the recommendations of the 2021 American College of Cardiology/American Heart Association/Society for Cardiovascular Angiography and Interventions (ACC/AHA/SCAI) and 2018 European Society of Cardiology (ESC) guidelines for coronary artery revascularization and discusses emerging trends and novel devices in PCI. A comprehensive literature review of mixed studies, clinical trials, and guidelines was conducted. Intravascular imaging, including intravascular ultrasound and optical coherence tomography, for stent optimization, is also recommended when feasible. However, differences reflecting variations in evidence quality interpretation and applicability were identified. Furthermore, novel devices and technologies with the potential for improving outcomes were highlighted, but their safety and efficacy compared to standard-of-care techniques require further evaluation through extensive randomized trials. Clinicians should stay updated on advancements and personalize treatment decisions based on individual patient factors. Future research should address evidence gaps and barriers to adopting innovative devices and techniques. This review provides recommendations for clinical practice, emphasizing the need to remain current with the evolving landscape of PCI to optimize patient outcomes. The discoveries provide valuable counsel for the deliberation of clinical interventions and prospective inquiries within the realm of interventional cardiology. Overall, the review underscores the importance of evidence-based practice and ongoing advancements in PCI for CAD management.

Development of Acute Myocardial Infarction Mortality and Readmission Models for Public Reporting on Hospital Performance in Canada

Background

Given changes in the care and outcomes of acute myocardial infarction (AMI) patients over the past several decades, we sought to develop prediction models that could be used to generate accurate risk-adjusted mortality and readmission outcomes for hospitals in current practice across Canada.

Methods

A Canadian national expert panel was convened to define appropriate AMI patients for reporting and develop prediction models. Preliminary candidate variable evaluation was conducted using Ontario patients hospitalized with a most responsible diagnosis of AMI from April 1, 2015 to March 31, 2018. National data from the Canadian Institute for Health Information was used to develop AMI prediction models. The main outcomes were 30-day all-cause in-hospital mortality and 30-day urgent all-cause readmission. Discrimination of these models (measured by c-statistics) was compared with that of existing Canadian Institute for Health Information models in the same study cohort.

Results

The AMI mortality model was assessed in 54,240 Ontario AMI patients and 153,523 AMI patients across Canada. We observed a 30-day in-hospital mortality rate of 6.3%, and a 30-day all-cause urgent readmission rate of 10.7% in Canada. The final Canadian AMI mortality model included 12 variables and had a c-statistic of 0.834. For readmission, the model had 13 variables and a c-statistic of 0.679. Discrimination of the new AMI models had higher c-statistics compared with existing models (c-statistic 0.814 for mortality; 0.673 for readmission).

Conclusions

In this national collaboration, we developed mortality and readmission models that are suitable for profiling performance of hospitals treating AMI patients in Canada.

The effect of sex on door-to-balloon time in patients presenting with ST-elevation myocardial infarction and referred for primary percutaneous coronary intervention: A systematic review

Timely reperfusion using primary percutaneous coronary intervention (pPCI) is the cornerstone of acute ST-elevation myocardial infarction (STEMI) management. We conducted a systematic review to examine the effect of sex on door-to-balloon (D2B) time and symptom-to-balloon (S2B) time. We observed longer D2B times and S2B times in female patients presenting with STEMI and referred for pPCI when compared to male patients. Future work is required to try and elucidate and mitigate sex-based front-line treatment delays for female STEMI patients.

The relationship between procedural volume and patient outcomes for percutaneous coronary interventions: a systematic review and meta-analysis

BACKGROUND

The relationship between procedural volume and outcomes for percutaneous coronary interventions (PCI) is contentious, with previous reviews suggesting an inverse volume-outcome relationship. The aim of this study was to systematically review contemporary evidence to re-examine this relationship.

METHODS

A systematic review and meta-analysis was undertaken to examine the relationship between PCI procedural volume (both at hospital- and operator-levels) and outcomes in adults. The primary outcome was mortality. The secondary outcomes were complications, healthcare utilisation and process outcomes. Searches were conducted from 1 January 2008 to 28 May 2019. Certainty of the evidence was assessed using 'Grading of Recommendations, Assessment, Development and Evaluations' (GRADE). Screening, data extraction, quality appraisal and GRADE assessments were conducted independently by two reviewers.

RESULTS

Of 1,154 unique records retrieved, 22 observational studies with 6,432,265 patients were included. No significant association was found between total PCI hospital volume and mortality (odds ratio [OR]: 0.84, 95% confidence interval [CI]: 0.69-1.03, I 2 = 86%). A temporal trend from significant to non-significant pooled effect estimates was observed. The pooled effect estimate for mortality was found to be significantly in favour of high-volume operators for total PCI procedures (OR: 0.77, 95% CI: 0.63-0.94, I 2 = 93%), and for high-volume hospitals for primary PCI procedures (OR: 0.77, 95% CI: 0.62-0.94, I 2 = 78%). Overall, GRADE certainty of evidence was 'very low'. There were mixed findings for secondary outcomes.

CONCLUSIONS

A volume-outcome relationship may exist in certain situations, although this relationship appears to be attenuating with time, and there is 'very low' certainty of evidence. While volume might be important, it should not be the only standard used to define an acceptable PCI service and a broader evaluation of quality metrics should be considered that encompass patient experience and clinical outcomes. Systematic review registration: PROSPERO, CRD42019125288.

Using a Novel Smart-Device Application for Follow-up After Percutaneous Coronary Intervention

Smart-device applications offer a potential novel and accessible opportunity to follow-up patients undergoing percutaneous coronary intervention (PCI) and identify opportunities to improve care. To date, no studies have described patient follow-up through surveys administered with the use of smart-device applications. Through a large online personal health management record solution system (MyChart) and a complementary smart-device application, an electronic 26-item survey was administered to patients on their mobile device at 4 days, 1 month, 3 months, and 6 months after PCI at a single tertiary-care hospital from July 2017 to March 2018. Among the 112 participants, response rates at 4 days and 3-6 months after PCI were both 53%. Seventy-two percent of patients responded to at least 1 follow-up survey, and 25% patients responded at all 4 follow-up times. In responders, 68% had follow-up with cardiology/internal medicine at 30 days. At 3-6 months, 30% of patients reported persistent or recurrent symptoms, 19% had had a readmission for any cause, 54% were enrolled in cardiac rehabilitation, 25% were not on statin therapy, and 90% of patients who were working before PCI had returned to work. Post-PCI follow-up with the use of patient questionnaires through a smart-device application is feasible and a novel tool for improving quality of care.

Quality indicators for responsible use of medicines: a systematic review

OBJECTIVE

All healthcare systems require valid ways to evaluate service delivery. The objective of this study was to identify existing content validated quality indicators (QIs) for responsible use of medicines (RUM) and classify them using multiple frameworks to identify gaps in current quality measurements.

DESIGN

Systematic review without meta-analysis.

SETTING

All care settings.

SEARCH STRATEGY

CINAHL, Embase, Global Health, International Pharmaceutical Abstract, MEDLINE, PubMed and Web of Science databases were searched up to April 2018. An internet search was also conducted. Articles were included if they described medication-related QIs developed using consensus methods. Government agency websites listing QIs for RUM were also included.

ANALYSIS

Several multidimensional frameworks were selected to assess the scope of QI coverage. These included Donabedian's framework (structure, process and outcome), the Anatomical Therapeutic Chemical (ATC) classification system and a validated classification for causes of drug-related problems (c-DRPs; drug selection, drug form, dose selection, treatment duration, drug use process, logistics, monitoring, adverse drug reactions and others).

RESULTS

2431 content validated QIs were identified from 131 articles and 5 websites. Using Donabedian's framework, the majority of QIs were process indicators. Based on the ATC code, the largest number of QIs pertained to medicines for nervous system (ATC code: N), followed by anti-infectives for systemic use (J) and cardiovascular system (C). The most common c-DRPs pertained to 'drug selection', followed by 'monitoring' and 'drug use process'.

CONCLUSIONS

This study was the first systematic review classifying QIs for RUM using multiple frameworks. The list of the identified QIs can be used as a database for evaluating the achievement of RUM. Although many QIs were identified, this approach allowed for the identification of gaps in quality measurement of RUM. In order to more effectively evaluate the extent to which RUM has been achieved, further development of QIs may be required.

Total Center Percutaneous Coronary Intervention Volume and 30-Day Mortality: A Contemporary National Cohort Study of 427 467 Elective, Urgent, and Emergency Cases

BACKGROUND

The relationship between procedural volume and prognosis after percutaneous coronary intervention (PCI) remains uncertain, with some studies finding in favor of an inverse association and some against. This UK study provides a contemporary reassessment in one of the few countries in the world with a nationally representative PCI registry.

METHODS AND RESULTS

A nationwide cohort study was performed using the national British Cardiovascular Intervention Society registry. All adult patients undergoing PCI in 93 English and Welsh NHS hospitals between 2007 and 2013 were analyzed using hierarchical modeling with adjustment for patient risk. Of 427 467 procedures (22.0% primary PCI) in 93 hospitals, 30-day mortality was 1.9% (4.8% primary PCI). 87.1% of centers undertook between 200 and 2000 procedures annually. Case mix varied with center volume. In centers with 200 to 399 PCI cases per year, a smaller proportion were PCI for ST-segment-elevation myocardial infarction (8.4%) than in centers with 1500 to 1999 PCI cases per year (24.2%), but proportionally more were for ST-segment-elevation myocardial infarction with cardiogenic shock (8.4% versus 4.3%). For the overall PCI cohort, after risk adjustment, there was no significant evidence of worse, or better, outcomes in lower volume centers from our own study, or in combination with results from other studies. For primary PCI, there was also no evidence for increased or decreased mortality in lower volume centers.

CONCLUSIONS

After adjustment for differences in case mix and clinical presentation, this study supports the conclusion of no trend for increased mortality in lower volume centers for PCI in the UK healthcare system.

CLINICAL TRIAL REGISTRATION

https://www.clinicaltrials.gov. Unique identifier: NCT02184949.

Quality of Care for Percutaneous Coronary Intervention: Development of Canadian Cardiovascular Society Quality Indicators

Currently there are more than 40 centres in Canada that perform more than 65,000 percutaneous coronary interventions (PCIs) in a year. Considering the high volume of procedures and number of operators, the potential for variation in processes of care is high, and might lead to variation in the quality of care. As part of its quality initiative, the Canadian Cardiovascular Society convened a working group to develop a set of PCI Quality Indicators (QIs) that would be relevant, scientifically acceptable, and feasible to measure and report. The working group was comprised of clinical experts from across Canada and members of provincial and federal organizations involved in promoting the quality of health care. Using the Canadian Cardiovascular Society "Best Practices for Developing Cardiovascular Quality Indicators" methodology, a total of 23 QIs were proposed. Subsequent ranking and discussion led to the selection of 8 QIs. The selection and ranking of QIs were on the basis of clinical importance and relevance, scientific acceptability, and feasibility of their operationalization at a national level. The data definitions and technical notes of the QIs were refined after feasibility testing and Web consultation. Feasibility testing indicated that standardization and enhancements of knowledge infrastructure are essential to provide the comprehensive patient data necessary to evaluate the quality of PCI across Canada.

[Quality assurance with administrative data (QSR): follow-up in quality measurement - an analysis of patient records]

The present study analyses the information gain obtained by evaluating adverse events during follow-up compared to the sole analysis of events during the initial hospital stay for quality measurement purposes. The analysis is based on AOK administrative data from the years 2010 to 2012. The analyses were carried out for 10 quality indicators from the 4 QSR sectors knee replacement for osteoarthritis, appendectomy, prostate surgery for benign prostatic syndrome (BPS) and therapeutic cardiac catheterization (PCI) in patients with myocardial infarction. A total of 409,774 AOK cases were included. For almost all indicators considered, a relevant share of complications can be found to have occurred only after discharge from the initial hospitalization (7.7 %-92.6 %). Furthermore, there is only a weak connection between the findings from the first hospitalization and those from the follow-up period (0.0449 < r < 0.1935). 26-66 % of the hospitals will be classified differently based on Standardized Mortality/Morbidity Ratio (SMR) quartiles if follow-up events are included in the quality assessment (with the exception of "Other Complications after PCI" of 14 %). In summary, quality assessment is improved considerably by evaluating the follow-up period for almost all indicators considered. A quality measurement based solely on events in the initial hospital stay obscures relevant adverse events that have an impact on a comparative hospital quality assessment for these indicators.

Can Acute Kidney Injury Be Considered a Clinical Quality Measure

Quality indicators are measurements of healthcare outcome, process, or structure that can be used as tools to measure the quality of care and identify opportunities for improvement. Acute kidney injury (AKI) has many characteristics that make it a potential target for quality indicator development. It is common, associated with a high risk of adverse outcomes, and there are reports of gaps in the quality of care in several clinical settings despite publication of evidence-based guidelines. Substantial work has already been undertaken to develop quality measures related to AKI following percutaneous coronary interventions and major surgical procedures. This paper reviews the current literature that has addressed issues of prevention or management of AKI as outcome, process, or structure quality indicators in these clinical settings. Several current controversies about the appropriateness of such indicators related to AKI are identified. Further research to strengthen the evidence-base supporting prevention and management initiatives for AKI across all relevant clinical settings is needed to clarify the role of AKI as a target for clinical quality indicators.

Adherence to process of care quality indicators after percutaneous coronary intervention in Ontario, Canada: a retrospective observational cohort study

Background

Public reporting of percutaneous coronary intervention (PCI) outcomes has been established in many jurisdictions to ensure optimal delivery of care. The majority of PCI report cards examine in-hospital mortality, but relatively little is known regarding the adherence to processes of care.

Methods

A modified Delphi panel comprising cardiovascular experts was assembled to develop a set of PCI quality indicators. Indicators such as prescription of aspirin, dual antiplatelet therapy, statins and smoking cessation counselling were identified to represent high-quality PCI care. Chart abstraction was performed at 13 PCI hospitals in Ontario, Canada from 2009 to 2010 with at least 200 PCI patients randomly selected from each hospital.

Results

Our study sample included 3041 patients, of whom 18% had stable coronary artery disease (CAD) and 82% had an acute coronary syndrome (ACS). Their mean age was 63±12.4 years and 29% of patients were female. Prior to PCI, 89% were prescribed aspirin, and after PCI 98.7% were prescribed aspirin, 95.1% were prescribed dual antiplatelet therapy for 12 months after drug-eluting stents, and 94.9% were prescribed statins. The lowest performing quality indicator was smoking cessation counselling, observed in only 42% of current and past smokers (18% in patients with stable CAD and 47% in ACS).

Conclusions

Our study demonstrates high levels of adherence to most quality indicators for patients undergoing PCI procedures in Ontario. In conclusion, smoking cessation counselling was not consistently performed across hospitals and represents an opportunity for future quality improvement efforts.

Evaluation of a regional ST-elevation myocardial infarction primary percutaneous coronary intervention program at the Rouge Valley Health System

BACKGROUND

ST-elevation myocardial infarction (STEMI) remains the second leading cause of death in Canada. Primary percutaneous coronary intervention (PCI) has been recognized as an effective method for treating STEMI. Improved access to primary PCI can be achieved through the implementation of regional PCI centres, which was the impetus for implementing the PCI program in an east Toronto hospital in 2009. As such, the purpose of this study was to measure the efficacy of this program regional expansion.

METHODS

A retrospective review of 101 patients diagnosed with STEMI from May to Sept 2010 was conducted. The average door-to-balloon time for these STEMI patients was calculated and the door-to-balloon times using different methods of arrival were analyzed. Method of arrival was by one of three ways: paramedic initiated referral; patient walk-ins to PCI centre emergency department; or transfer after walk-in to community hospital emergency department.

RESULTS

The study found that mean door-to balloon time for PCI was 112.5 minutes. When the door-to-balloon times were compared across the three arrival methods, patients who presented by paramedic-initiated referral had significantly shorter door-to-balloon times, (89.5 minutes) relative to those transferred (120.9 minutes) and those who walked into a PCI centre (126.7 minutes) (p = 0.047).

CONCLUSIONS

The findings suggest that the partnership between the hospital and its EMS partners should be continued, and paramedic initiated referral should be expanded across Canada and EMS systems where feasible, as this level of coverage does not currently exist nationwide. Investments in regional centres of excellence and the creation of EMS partnerships are needed to enhance access to primary PCI.

Building quality indicators to improve care for adults with congenital heart disease

OBJECTIVES

This study sought to develop quality indicators (QIs) for outpatient management of adult congenital heart disease (ACHD) patients.

BACKGROUND

There are no published QIs to promote quality measurement and improvement for ACHD patients.

METHODS

Working groups of ACHD experts reviewed published data and United States, Canadian, and European guidelines to identify candidate QIs. For each QI, we specified a numerator, denominator, period of assessment, and data source. We submitted the QIs to a 9-member panel of international ACHD experts. The panel rated the QIs for validity and feasibility in 2 rounds on a scale of 1 to 9 using the RAND/University of California-Los Angeles modified-Delphi method, and final QI selection was on the basis of median scores.

RESULTS

A total of 62 QIs were identified regarding appropriateness and timing of clinical management, testing, and test interpretation. Each QI was ascertainable from health records. After the first round of rating, 29 QIs were accepted, none were rejected, and 33 were equivocal; on the second round, 55 QIs were accepted. Final QIs included: 8 for atrial septal defects; 9 for aortic coarctation; 12 for Eisenmenger; 9 for Fontan; 9 for D-transposition of the great arteries; and 8 for tetralogy of Fallot.

CONCLUSIONS

This project resulted in development of the first set of QIs for ACHD care based on published data, guidelines, and a modified Delphi process. These QIs provide a quality of care assessment tool for 6 ACHD conditions. This rigorously designed set of QIs should facilitate measuring and improving the quality of care for this growing group of patients.

Development of quality of care indicators from systematic reviews: the case of hospital delivery

BACKGROUND

The objective of this research is to generate quality of care indicators from systematic reviews to assess the appropriateness of obstetric care in hospitals.

METHODS

A search for systematic reviews about hospital obstetric interventions, conducted in The Cochrane Library, clinical evidence and practice guidelines, identified 303 reviews. We selected 48 high-quality evidence reviews, which resulted in strong clinical recommendations using the Grading of Recommendations Assessment, Development and Evaluation (GRADE) system. The 255 remaining reviews were excluded, mainly due to a lack of strong evidence provided by the studies reviewed.

RESULTS

A total of 18 indicators were formulated from these clinical recommendations, on antepartum care (8), care during delivery and postpartum (9), and incomplete miscarriage (1). Authors of the systematic reviews and specialists in obstetrics were consulted to refine the formulation of indicators.

CONCLUSIONS

High-quality systematic reviews, whose conclusions clearly claim in favour or against an intervention, can be a source for generating quality indicators of delivery care. To make indicators coherent, the nuances of clinical practice should be considered. Any attempt made to evaluate the extent to which delivery care in hospitals is based on scientific evidence should take the generated indicators into account.

Quality measures for medication continuity in long-term care facilities, using a structured panel process

BACKGROUND

Patient transitions, such as transfers between acute and long-term care (LTC), aposare times when the likelihood of communication failure between healthcare providers is increased. Employing appropriate health quality indicators helps support improvement efforts. To date, few quality indicators that evaluate the continuity of medication use between acute and LTC facilities have been described.

OBJECTIVE

The aim of the study was to develop quality indicators signalling the potential discontinuation of previously prescribed medications for chronic diseases when residents return to LTC following an acute-care hospitalization.

METHODS

A literature review for the selection of potential indicators was conducted, followed by a three-step process: (i) initial screening round that rated the indicators; (ii) a 1-day in-person consensus meeting in which the panel refined the parameters regarding the proposed quality indicators; and (iii) a final anonymous survey that assessed consensus among panel members. The study setting was a survey and consensus meeting with national representation, held in Toronto, ON, Canada. A ten-member expert panel with broad geographical and clinical representation participated and was made up of registered nurses, physicians, pharmacists, policy makers and academic researchers. A 75% agreement threshold was required for consensus, as measured on a 9-point Likert-type scale. The panel evaluated quality indicators for effectiveness, relevance and feasibility, using currently available healthcare administrative data.

RESULTS

The panel reached consensus on four quality indicators to assess the unintentional discontinuation of medications prescribed to LTC residents for chronic diseases upon return to LTC after an acute-care admission. The selected indicators were (i) HMG-CoA reductase inhibitors (statins) for all indications; (ii) anticoagulants (e.g. warfarin) for the indication of atrial fibrillation; (iii) proton-pump inhibitors for the indication of post-gastrointestinal haemorrhage; and (iv) thyroxine for all indications. The panel identified three additional treatment groups for future consideration as quality indicators: anti-Parkinson's disease, anti-diabetes and antidepressant medications.

CONCLUSION

A novel set of quality indicators has been developed to evaluate medication continuity between acute and LTC facilities. The adoption and implementation of these indicators in clinical practice can help inform quality improvement efforts at various local and regional levels.

An international environmental scan of quality indicators for cardiovascular care

Quality indicators (QIs) are increasingly being used to measure and improve the quality of cardiac care. We conducted an international environmental scan to identify and critically appraise published QI development initiatives addressing cardiovascular disease (CVD). A review of the peer-reviewed and grey English-language literature was conducted to identify published CVD QI development initiatives. The quality of identified studies was assessed using a modified version of the Appraisal of Guidelines for Research and Evaluation (AGREE) II QI tool-an instrument originally developed for the assessment of the quality of clinical practice guidelines. An initial literature search identified 2314 potentially relevant abstracts of peer-reviewed articles. After a review of the abstracts, 120 full text articles were retrieved and reviewed. Of these, 20 articles and 1 peer-reviewed monograph were selected for critical appraisal (n = 21). Most of the initiatives were conducted in North America (76%) and were published after 2005 (62%). The majority (5 of 6) of the AGREE II QI domain scores were skewed toward higher values, including the median score for the 'overall quality' rating (83.3%). Of the CVD categories addressed within the 21 initiatives, heart failure was the most common (n = 10 QI indicator sets), followed by acute coronary syndromes (n = 8). Considerable variation was observed in the methods utilized and the degree of scientific rigour applied in the published international CVD QI development initiatives. Adoption of standardized methods could help improve the quality of QI development initiatives.

Classifying orofacial pains: a new proposal of taxonomy based on ontology

We propose a new taxonomy model based on ontological principles for disorders that manifest themselves through the symptom of persistent orofacial pain and are commonly seen in clinical practice and difficult to manage. Consensus meeting of eight experts from various geographic areas representing different perspectives (orofacial pain, headache, oral medicine and ontology) as an initial step towards improving the taxonomy. Ontological principles were introduced, reviewed and applied during the consensus building process. Diagnostic criteria for persistent dento-alveolar pain disorder (PDAP) were formulated as an example to be used to model the taxonomical structure of all orofacial pain conditions. These criteria have the advantage of being (i) anatomically defined, (ii) in accordance with other classification systems for the provision of clinical care, (iii) descriptive and succinct, (iv) easy to adapt for applications in varying settings, (v) scalable and (vi) transferable for the description of pain disorders in other orofacial regions of interest. Limitations are that the criteria introduce new terminology, do not have widespread acceptance and have yet to be tested. These results were presented to the greater conference membership and were unanimously accepted. Consensus for the diagnostic criteria of PDAP was established within this working group. This is an initial first step towards developing a coherent taxonomy for orofacial pain disorders, which is needed to improve clinical research and care.