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Bacterial Dispersion Associated With Various Patient Face Mask Designs During Simulated Intravitreal Injections.
Patel, Samir N; Mahmoudzadeh, Raziyeh; Salabati, Mirataollah; Soares, Rebecca R; Hinkle, John; Hsu, Jason; Garg, Sunir J; Regillo, Carl D; Ho, Allen C; Cohen, Michael N; Khan, M Ali; Yonekawa, Yoshihiro; Chiang, Allen; Gupta, Omesh P; Kuriyan, Ajay E.
  • Patel SN; Wills Eye Hospital, Mid Atlantic Retina, Thomas Jefferson University, Philadelphia, Pennsylvania, USA.
  • Mahmoudzadeh R; Wills Eye Hospital, Mid Atlantic Retina, Thomas Jefferson University, Philadelphia, Pennsylvania, USA.
  • Salabati M; Wills Eye Hospital, Mid Atlantic Retina, Thomas Jefferson University, Philadelphia, Pennsylvania, USA.
  • Soares RR; Wills Eye Hospital, Mid Atlantic Retina, Thomas Jefferson University, Philadelphia, Pennsylvania, USA.
  • Hinkle J; Wills Eye Hospital, Mid Atlantic Retina, Thomas Jefferson University, Philadelphia, Pennsylvania, USA.
  • Hsu J; Wills Eye Hospital, Mid Atlantic Retina, Thomas Jefferson University, Philadelphia, Pennsylvania, USA.
  • Garg SJ; Wills Eye Hospital, Mid Atlantic Retina, Thomas Jefferson University, Philadelphia, Pennsylvania, USA.
  • Regillo CD; Wills Eye Hospital, Mid Atlantic Retina, Thomas Jefferson University, Philadelphia, Pennsylvania, USA.
  • Ho AC; Wills Eye Hospital, Mid Atlantic Retina, Thomas Jefferson University, Philadelphia, Pennsylvania, USA.
  • Cohen MN; Wills Eye Hospital, Mid Atlantic Retina, Thomas Jefferson University, Philadelphia, Pennsylvania, USA.
  • Khan MA; Wills Eye Hospital, Mid Atlantic Retina, Thomas Jefferson University, Philadelphia, Pennsylvania, USA.
  • Yonekawa Y; Wills Eye Hospital, Mid Atlantic Retina, Thomas Jefferson University, Philadelphia, Pennsylvania, USA.
  • Chiang A; Wills Eye Hospital, Mid Atlantic Retina, Thomas Jefferson University, Philadelphia, Pennsylvania, USA.
  • Gupta OP; Wills Eye Hospital, Mid Atlantic Retina, Thomas Jefferson University, Philadelphia, Pennsylvania, USA.
  • Kuriyan AE; Wills Eye Hospital, Mid Atlantic Retina, Thomas Jefferson University, Philadelphia, Pennsylvania, USA. Electronic address: akuriyan@midatlanticretina.com.
Am J Ophthalmol ; 223: 178-183, 2021 03.
Article in English | MEDLINE | ID: covidwho-1135232
ABSTRACT

PURPOSE:

We sought to investigate bacterial dispersion with patient face mask use during simulated intravitreal injections.

DESIGN:

Prospective cross-sectional study.

METHODS:

Fifteen healthy subjects were recruited for this single-center study. Each participant was instructed not to speak for 2 minutes, simulating a "no-talking" policy, while in an ophthalmic examination chair with an blood agar plate secured to the forehead and wearing various face masks (no mask, loose fitting surgical mask, tight-fitting surgical mask without tape, tight-fitting surgical mask with adhesive tape securing the superior portion of the mask, N95 mask, and cloth mask). Each scenario was then repeated while reading a 2-minute script, simulating a talking patient. The primary outcome measures were the number of colony-forming units (CFUs) and microbial species.

RESULTS:

During the "no-talking" scenario, subjects wearing a tight-fitting surgical mask with tape developed fewer CFUs compared with subjects wearing the same mask without tape (difference 0.93 CFUs [95% confidence interval 0.32-1.55]; P = .003). During the speech scenarios, subjects wearing a tight-fitting surgical mask with tape had significantly fewer CFUs compared with subjects without a face mask (difference 1.07 CFUs; P = .001), subjects with a loose face mask (difference 0.67 CFUs; P = .034), and subjects with a tight face mask without tape (difference 1.13 CFUs; P < .001). There was no difference between those with a tight-fitting surgical mask with tape and an N95 mask in the "no-talking" (P > .99) and "speech" (P = .831) scenarios. No oral flora were isolated in "no-talking" scenarios but were isolated in 8 of 75 (11%) cultures in speech scenarios (P = .02).

CONCLUSION:

The addition of tape to the superior portion of a patient's face mask reduced bacterial dispersion during simulated intravitreal injections and had no difference in bacterial dispersion compared with wearing N95 masks.
Subject(s)

Full text: Available Collection: International databases Database: MEDLINE Main subject: Bacteria / Patient Simulation / Equipment Design / Intravitreal Injections / Masks Type of study: Cohort study / Observational study / Prognostic study / Randomized controlled trials Limits: Adult / Female / Humans / Male Language: English Journal: Am J Ophthalmol Year: 2021 Document Type: Article Affiliation country: J.ajo.2020.10.017

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Full text: Available Collection: International databases Database: MEDLINE Main subject: Bacteria / Patient Simulation / Equipment Design / Intravitreal Injections / Masks Type of study: Cohort study / Observational study / Prognostic study / Randomized controlled trials Limits: Adult / Female / Humans / Male Language: English Journal: Am J Ophthalmol Year: 2021 Document Type: Article Affiliation country: J.ajo.2020.10.017