An end user alleges she developed receding gums due to inadequate humidification while using a continuous positive airway pressure (cpap) device and associated humidifier.The user reported undergoing surgery to correct her receding gums.The patient discontinued therapy approximately four months prior to the completion of the dental procedure.The manufacturer received the cpap and heated humidifier for evaluation and could not confirm the user's allegation.There were no operational or humidification issues with the devices.Both units passing all testing and functioned as designed.The durable medical equipment (dme) provider states the patient had very poor compliance and overall poor tolerance of the cpap therapy while using the device between (b)(6) 2017.A review of the data indicates there was humidification during all therapy sessions.The heated humidifier is an accessory for therapy devices to provide moisture to the patient circuit.It is intended for use in spontaneously breathing patients weighing over (b)(6) kg ((b)(6) lbs.), in the home or hospital/institutional environment, who use mask-applied positive pressure ventilation therapy.Labeling instructs the user to periodically inspect the humidifier for signs of wear or damage.Never operate the humidifier if any parts are damaged, if it is not working properly, or if the humidifier has been dropped or mishandled.Do not use the humidifier if the water tank is leaking or damaged in any way.Have any damaged parts replaced before continuing use.The absence of heated, humidified air does not represent a serious risk of permanent harm or injury.Based on the information available, the manufacturer concludes the devices have functioned as designed and no further action is necessary.
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