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      Protecting Labor and Delivery Personnel from COVID-19 during the Second Stage of Labor

      research-article
      , MD 1 , , DO, MS 1
      American Journal of Perinatology
      Thieme Medical Publishers
      COVID-19, second stage of labor, N95 mask, aerosol

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          Abstract

          The novel coronavirus disease 2019 (COVID-19) is spreading fast and is affecting the clinical workers at much higher risk than the general population. Little is known about COVID-19 effect on pregnant women; however, the emerging evidence suggests they may be at high risk of asymptomatic disease. In light of projected shortage of personal protective equipment (PPE), there is an aggressive attempt at conservation. In obstetrics, the guidelines on PPE use are controversial and differ among hospitals, globally, as well as nationally. The centers for disease control and prevention (CDC) recommend using N95 respirators, which are respirators that offer a higher level of protection instead of a facemask for when performing or present for an aerosol-generating procedures (AGP). However, the second stage of labor is not considered an AGP. The second stage of labor can last up to 4 hours. During that time, labor and delivery personnel is in close contact to patients, who are exerting extreme effort during and frequently blow out their breath, cough, shout, and vomit, all of which put the health care team at risk, considering that COVID-19 transmission occurs through aerosol generated by coughing and sneezing. The CDC and the American College of Obstetricians and Gynecologists (ACOG) do not provide clarification on the use of N95 during the second stage. We recommend that labor and delivery personnel have the utmost caution and be granted the protection they need to protect themselves and other patients. This includes providing labor and delivery personnel full PPE including N95 for the second stage of labor. This is critical to ensure the adequate protection for health care workers and to prevent spread to other health care workers and patients.

          Key Points

          • Second stage of labor exposes providers to aerosol.

          • COVID-19 risk during second stage of labor is high.

          • N95 should be used during second stage of labor.

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          Most cited references2

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          Obstetric care consensus no. 1: safe prevention of the primary cesarean delivery.

          , (2014)
          In 2011, one in three women who gave birth in the United States did so by cesarean delivery. Cesarean birth can be life-saving for the fetus, the mother, or both in certain cases. However, the rapid increase in cesarean birth rates from 1996 to 2011 without clear evidence of concomitant decreases in maternal or neonatal morbidity or mortality raises significant concern that cesarean delivery is overused. Variation in the rates of nulliparous, term, singleton, vertex cesarean births also indicates that clinical practice patterns affect the number of cesarean births performed. The most common indications for primary cesarean delivery include, in order of frequency, labor dystocia, abnormal or indeterminate (formerly, nonreassuring) fetal heart rate tracing, fetal malpresentation, multiple gestation, and suspected fetal macrosomia. Safe reduction of the rate of primary cesarean deliveries will require different approaches for each of these, as well as other, indications. For example, it may be necessary to revisit the definition of labor dystocia because recent data show that contemporary labor progresses at a rate substantially slower than what was historically taught. Additionally, improved and standardized fetal heart rate interpretation and management may have an effect. Increasing women's access to nonmedical interventions during labor, such as continuous labor and delivery support, also has been shown to reduce cesarean birth rates. External cephalic version for breech presentation and a trial of labor for women with twin gestations when the first twin is in cephalic presentation are other of several examples of interventions that can contribute to the safe lowering of the primary cesarean delivery rate.
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            Aerodynamic Characteristics and RNA Concentration of SARS-CoV-2 Aerosol in Wuhan Hospitals during COVID-19 Outbreak

            The ongoing outbreak of COVID-19 has spread rapidly and sparked global concern. While the transmission of SARS-CoV-2 through human respiratory droplets and contact with infected persons is clear, the aerosol transmission of SARS-CoV-2 has been little studied. Thirty-five aerosol samples of three different types (total suspended particle, size segregated and deposition aerosol) were collected in Patient Areas (PAA) and Medical Staff Areas (MSA) of Renmin Hospital of Wuhan University (Renmin) and Wuchang Fangcang Field Hospital (Fangcang), and Public Areas (PUA) in Wuhan, China during COVID-19 outbreak. A robust droplet digital polymerase chain reaction (ddPCR) method was employed to quantitate the viral SARS-CoV-2 RNA genome and determine aerosol RNA concentration. The ICU, CCU and general patient rooms inside Renmin, patient hall inside Fangcang had undetectable or low airborne SARS-CoV-2 concentration but deposition samples inside ICU and air sample in Fangcang patient toilet tested positive. The airborne SARS-CoV-2 in Fangcang MSA had bimodal distribution with higher concentration than those in Renmin during the outbreak but turned negative after patients number reduced and rigorous sanitization implemented. PUA had undetectable airborne SARS-CoV-2 concentration but obviously increased with accumulating crowd flow. Room ventilation, open space, proper use and disinfection of toilet can effectively limit aerosol transmission of SARS-CoV-2. Gathering of crowds with asymptomatic carriers is a potential source of airborne SARS-CoV-2. The virus aerosol deposition on protective apparel or floor surface and their subsequent resuspension is a potential transmission pathway and effective sanitization is critical in minimizing aerosol transmission of SARS-CoV-2.
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              Author and article information

              Journal
              Am J Perinatol
              Am J Perinatol
              10.1055/s-00000009
              American Journal of Perinatology
              Thieme Medical Publishers (333 Seventh Avenue, New York, NY 10001, USA. )
              0735-1631
              1098-8785
              June 2020
              10 April 2020
              : 37
              : 8
              : 854-856
              Affiliations
              [1 ]Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, Medical College of Wisconsin, Milwaukee, Wisconsin
              Author notes
              Address for correspondence Anna Palatnik, MD Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology Medical College of Wisconsin, Milwaukee, 9200 West Wisconsin Avenue, Milwaukee, WI 53226 apalatnik@ 123456mcw.edu
              Author information
              http://orcid.org/0000-0001-6568-0201
              http://orcid.org/0000-0002-0299-9589
              Article
              200190
              10.1055/s-0040-1709689
              7356056
              32276282
              6bc17262-3dec-41e2-a80b-e5321d512921
              Copyright @ 2020

              This article is made available via the PMC Open Access Subset for unrestricted re-use and analyses in any form or by any means with acknowledgement of the original source. These permissions are granted for the duration of the COVID-19 pandemic or until permissions are revoked in writing. Upon expiration of these permissions, PMC is granted a perpetual license to make this article available via PMC and Europe PMC, consistent with existing copyright protections.

              History
              : 28 March 2020
              : 30 March 2020
              Funding
              Funded by: National Heart, Lung, and Blood Institute of the National Institutes of Health
              Award ID: K08HL150340
              Funding J.J.M. is supported by the National Heart, Lung, and Blood Institute of the National Institutes of Health under Award Number K08HL150340. The content is solely the responsibility of the authors and does not necessarily represent the official views of the National Institutes of Health.
              Categories
              Short Communication

              covid-19,second stage of labor,n95 mask,aerosol
              covid-19, second stage of labor, n95 mask, aerosol

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