Assessment of Infectious Diseases Risks From Dental Aerosols in Real-World Settings.

Background: Infectious diseases physicians are leaders in assessing the health risks in a variety of community settings. An understudied area with substantial controversy is the safety of dental aerosols. Previous studies have used in vitro experimental designs and/or indirect measures to evaluate bacteria and viruses from dental surfaces. However, these findings may overestimate the occupational risks of dental aerosols. The purpose of this study was to directly measure dental aerosol composition to assess the health risks for dental healthcare personnel and patients. Methods: We used a variety of aerosol instruments to capture and measure the bacterial, viral, and inorganic composition of aerosols during a variety of common dental procedures and in a variety of dental office layouts. Equipment was placed in close proximity to dentists during each procedure to best approximate the health risk hazards from the perspective of dental healthcare personnel. Devices used to capture aerosols were set at physiologic respiration rates. Oral suction devices were per the discretion of the dentist. Results: We detected very few bacteria and no viruses in dental aerosols-regardless of office layout. The bacteria identified were most consistent with either environmental or oral microbiota, suggesting a low risk of transmission of viable pathogens from patients to dental healthcare personnel. When analyzing restorative procedures involving amalgam removal, we detected inorganic elements consistent with amalgam fillings. Conclusions: Aerosols generating from dental procedures pose a low health risk for bacterial and likely viral pathogens when common aerosol mitigation interventions, such as suction devices, are employed.

Personal protective equipment use among dental healthcare personnel during the coronavirus disease 2019 (COVID-19) pandemic and the impact of an educational video in clinical practice.

OBJECTIVE: Dental healthcare personnel (DHCP) are at high risk of exposure to coronavirus disease 2019 (COVID-19). We sought to identify how DHCP changed their use of personal protective equipment (PPE) as a result of the COVID-19 pandemic, and to pilot an educational video designed to improve knowledge of proper PPE use. DESIGN: The study comprised 2 sets of semistructured qualitative interviews. SETTING: The study was conducted in 8 dental clinics in a Midwestern metropolitan area. PARTICIPANTS: In total, 70 DHCP participated in the first set of interviews; 63 DHCP participated in the second set of interviews. METHODS: In September-November 2020 and March-October 2021, we conducted 2 sets of semistructured interviews: (1) PPE use in the dental community during COVID-19, and (2) feedback on the utility of an educational donning and doffing video. RESULTS: Overall, 86% of DHCP reported having prior training. DHCP increased the use of PPE during COVID-19, specifically N95 respirators and face shields. DHCP reported real-world challenges to applying infection control methods, often resulting in PPE modification and reuse. DHCP reported double masking and sterilization methods to extend N95 respirator use. Additional challenges to PPE included shortages, comfort or discomfort, and compatibility with specialty dental equipment. DHCP found the educational video helpful and relevant to clinical practice. Fewer than half of DHCP reported exposure to a similar video. CONCLUSIONS: DHCP experienced significant challenges related to PPE access and routine use in dental clinics during the COVID-19 pandemic. An educational video improved awareness and uptake of appropriate PPE use among DHCP.

A Rare Case of ST-Segment Elevation Myocardial Infarction and Left Ventricular Thrombus in a Dextrocardia Patient With COVID-19 Infection.

Acute coronary syndrome (ACS) is an increasingly common finding among patients presenting with Coronavirus Disease 2019 (COVID-19) pneumonia. While cardiovascular disease alone remains one of the most common causes of death among COVID-19 patients in the United States, its heightened prevalence with COVID-19 pneumonia has been well documented. Here we present the case of a 58-year-old male with an extensive cardiac history including coronary artery disease (CAD) with multiple drug-eluting stents (DES) placed and an episode of cardiac arrest requiring implantable cardioverter defibrillator (ICD) placement. He presented to the Emergency Department originally complaining of chest pain, shortness of breath, and fatigue, and was found to be positive for COVID-19 pneumonia. Cardiac catheterization demonstrated extensive CAD and evaluation for coronary artery bypass grafting (CABG) was warranted. Shortly after, the patient experienced an acute thrombotic episode in the left anterior descending (LAD) coronary artery and underwent successful emergent high-risk percutaneous coronary intervention (PCI) with DES placement. The patient was also found to have a left ventricular thrombus requiring anticoagulation. Despite his complex course, the patient had a very favorable outcome.

Assessment of dental health care personnel protocol deviations and self-contamination during personal protective equipment donning and doffing.

BACKGROUND: Dental health care personnel (DHCP) may be at increased risk of exposure to severe acute respiratory syndrome coronavirus 2, the virus that causes COVID-19, as well as other clinically important pathogens. Proper use of personal protective equipment (PPE) reduces occupational exposure to pathogens. The authors performed an assessment of PPE donning and doffing practices among DHCP, using a fluorescent marker as a surrogate for pathogen transmission. METHODS: Participants donned PPE (that is, disposable gown, gloves, face mask, and eye protection) and the fluorescent marker was applied to their palms and abdomen. DHCP then doffed PPE according to their usual practices. The donning and doffing processes were video recorded, areas of fluorescence were noted, and protocol deviations were assessed. Statistical analyses included frequency, type, and descriptions of protocol deviations and factors associated with fluorescence. RESULTS: Seventy DHCP were enrolled. The donning and doffing steps with the highest frequency of protocol deviations were hand hygiene (66% of donning and 78% of doffing observations involved a deviation) and disposable gown use (63% of donning and 60% of doffing observations involved a deviation). Fluorescence was detected on 69% of DHCP after doffing, most frequently on hands. An increasing number of protocol deviations was significantly associated with increased risk of fluorescence. DHCP with a gown doffing deviation, excluding doffing out of order, were more likely to have fluorescence detected. CONCLUSIONS: DHCP self-contamination was common with both donning and doffing PPE. PRACTICAL IMPLICATIONS: Proper use of PPE is an important component of occupational health.

Comparison of aerosol mitigation strategies and aerosol persistence in dental environments.

OBJECTIVE: To determine the impact of various aerosol mitigation interventions and to establish duration of aerosol persistence in a variety of dental clinic configurations. METHODS: We performed aerosol measurement studies in endodontic, orthodontic, periodontic, pediatric, and general dentistry clinics. We used an optical aerosol spectrometer and wearable particulate matter sensors to measure real-time aerosol concentration from the vantage point of the dentist during routine care in a variety of clinic configurations (eg, open bay, single room, partitioned operatories). We compared the impact of aerosol mitigation strategies (eg, ventilation and high-volume evacuation (HVE), and prevalence of particulate matter) in the dental clinic environment before, during, and after high-speed drilling, slow-speed drilling, and ultrasonic scaling procedures. RESULTS: Conical and ISOVAC HVE were superior to standard-tip evacuation for aerosol-generating procedures. When aerosols were detected in the environment, they were rapidly dispersed within minutes of completing the aerosol-generating procedure. Few aerosols were detected in dental clinics, regardless of configuration, when conical and ISOVAC HVE were used. CONCLUSIONS: Dentists should consider using conical or ISOVAC HVE rather than standard-tip evacuators to reduce aerosols generated during routine clinical practice. Furthermore, when such effective aerosol mitigation strategies are employed, dentists need not leave dental chairs fallow between patients because aerosols are rapidly dispersed.

Barriers to Care Experienced by Patients Who Inject Drugs During the COVID-19 Pandemic: A Qualitative Analysis.

OBJECTIVES: To identify the barriers to accessing health care and social services faced by people who inject drugs (PWID) during the coronavirus disease 2019 (COVID-19) pandemic. METHODS: This report is a sub-analysis of a larger qualitative study. Semi-structured interviews were conducted with PWID admitted to an academic medical center from 2017 to 2020 for an invasive injection-related infection. Standard qualitative analysis techniques, consisting of both inductive and deductive approaches, were used to identify and characterize the effects of COVID-19 on participants. RESULTS: Among the 30 PWID interview participants, 14 reported barriers to accessing health and addiction services due to COVID-19. As facilities decreased appointment availability or transitioned to telemedicine, PWID reported being unable to access services. Social distancing led to isolation or loneliness during hospital stays and in the community. Recovery meetings and support groups, critical to addiction recovery, were particularly affected. Other participants reported that uncertainty and fear of contracting the virus generated changes in behavior that led them to avoid seeking services. CONCLUSIONS: COVID-19 has disrupted health systems and social services, leading PWID to experience unprecedented barriers to accessing and maintaining health and addiction services in both inpatient and outpatient settings. Opioid use disorder management must be understood as a holistic process, and a multidisciplinary approach to ensuring comprehensive care, even in the midst of this pandemic, is needed.