Objectives: Evaluate different non-continuous temperature monitoring practices for detection of out-of-range temperatures (above or below the recommended temperature range of 2-8°C for refrigeration units), which are called excursions, within vaccine storage units. Methods: Simulations based on temperature data collected by 243 digital data loggers operated in vaccine storage units at health care providers who participated in a CDC-sponsored continuous temperature monitoring pilot project, from 2012 to 2015. In the primary analysis, we evaluate: (1) twice-daily current temperature readings without minimum and maximum readings (min/max), (2) twice-daily current temperature readings with once-daily min/max, and (3) twice-daily current temperature readings with twice-daily min/max. Results: Recording current temperature twice-daily without min/max resulted in the detection of 4.8-6.4% of the total number of temperature excursions. When min/max readings were introduced, the percentage of detected temperature excursions increased to 27.8-96.6% with once-daily min/max and to 34.8-96.7% with twice-daily min/max. Conclusions: Including min/max readings improves the ability of a temperature monitoring practice to detect temperature excursions. No combination of the non-continuous temperature monitoring practices were able to consistently detect all simulated temperature excursions.
Objectives: Evaluate different non-continuous temperature monitoring practices for detection of out-of-range temperatures (above or below the recommended temperature range of 2-8°C for refrigeration units), which are called excursions, within vaccine storage units. Methods: Simulations based on temperature data collected by 243 digital data loggers operated in vaccine storage units at health care providers who participated in a CDC-sponsored continuous temperature monitoring pilot project, from 2012 to 2015. In the primary analysis, we evaluate: (1) twice-daily current temperature readings without minimum and maximum readings (min/max), (2) twice-daily current temperature readings with once-daily min/max, and (3) twice-daily current temperature readings with twice-daily min/max. Results: Recording current temperature twice-daily without min/max resulted in the detection of 4.8-6.4% of the total number of temperature excursions. When min/max readings were introduced, the percentage of detected temperature excursions increased to 27.8-96.6% with once-daily min/max and to 34.8-96.7% with twice-daily min/max. Conclusions: Including min/max readings improves the ability of a temperature monitoring practice to detect temperature excursions. No combination of the non-continuous temperature monitoring practices were able to consistently detect all simulated temperature excursions.
Authors: Sabeena Setia; Hugh Mainzer; Michael L Washington; Gary Coil; Robert Snyder; Bruce G Weniger Journal: Vaccine Date: 2002-01-15 Impact factor: 3.641
Authors: Lorraine F Yeung; Perrianne Lurie; Gustavo Dayan; Eduard Eduardo; Phyllis H Britz; Susan B Redd; Mark J Papania; Jane F Seward Journal: Pediatrics Date: 2005-12 Impact factor: 7.124