Note: Only use the PSU supplied with the device for safety purposes. Withings warranty does not cover defects due to the use of spare parts not provided by Withings in the original packaging.

如果佩戴心脏起搏器，是否可以使用 Sleep Analyzer？

可以，如果佩戴心脏起搏器或其他体内医疗设备，可以使用 Sleep Analyzer。

如果我使用睡眠呼吸机，是否可以使用 Sleep Analyzer？

We are currently investigating the use of the Withings Sleep Analyzer with different CPAP devices. Sleep has not been yet tested for use during CPAP treatment. A scientific protocol is currently ongoing in CPAP users to compare AHI (Apnea-Hypopnea Index) given by CPAP devices and the WSA (Wake-Sleep Algorithm).

怀孕时是否可以使用 Sleep Analyzer？

可以，目前尚未出现与孕妇使用 Sleep Analyzer 相关的已知风险。

可以用 Sleep Analyzer 监测儿童的睡眠吗？

Sleep Analyzer 已针对成人（18 岁以上）进行测试。很遗憾，我们无法保证监测儿童睡眠时的准确性。

Should I use Sleep Analyzer if the device becomes warm?

Yes, it is normal for the Sleep Analyzer to become warm, particularly at night. This is in part the result of the device being in between the mattress and bed frame, making it difficult for heat to dissipate. Keep in mind, however, that the Sleep Analyzer was designed to operate under these conditions.

Are there any contraindications to the use of the Sleep Apnea Detector of Sleep Analyzer?

Sleep Apnea Detector is not indicated for use on patients with the following conditions:

• Arrhythmia, as the device also analyzes changes in the heart frequency to detect apnea and hypopnea events. Since arrhythmias are often characterized by irregular heartbeats, these conditions may mislead the device.
• Cardiac insufficiency (heart failure), as this condition may be associated with irregular heart rhythm and breathing which may mislead the device and has not been tested.
• Chronic obstructive pulmonary disease, such as nocturnal asthma, has a distinctive breathing pattern with prolonged expirations, which the device may confuse with apnea or hypopnea breathing patterns, incorrectly increasing the AHI.
  Chronic hypoventilation observed in chronic obstructive pulmonary disease or neuromuscular diseases (Charcot’s disease) has a different breathing pattern than apneas, with prolonged shallow amplitude of breathing.

Other conditions may also negatively affect the performance of the device. These include disorders such as periodic limb movements in sleep and restless legs syndrome, which could create interfering signals, or non-respiratory sleep disorders that result in fragmented sleep.