Outcome
Type |
Measure |
Description |
Time frame |
Safety issue |
Primary |
Maternal supine sleep position |
Average time per night, in minutes, spent supine while in bed as determined by manual review of infrared video. |
4 nights (approximately 32 hours) |
|
Secondary |
Bed partner sleep position |
Average time per night, in minutes, spent supine while in bed as determined by manual review of infrared video. |
4 nights (approximately 32 hours) |
|
Secondary |
Maternal obstructive sleep apnea |
Average nightly Apnea-Hypopnea Index as determined by the home-sleep apnea test. |
4 nights (approximately 32 hours) |
|
Secondary |
Bed partner obstructive sleep apnea |
Average nightly Apnea-Hypopnea Index as determined by the home-sleep apnea test. |
4 nights (approximately 32 hours) |
|
Secondary |
Maternal limb movements |
Average nightly periodic limb movement index (number of limb movements per hour) |
4 nights (approximately 32 hours) |
|
Secondary |
Bed partner limb movements |
Average nightly periodic limb movement index (number of limb movements per hour) |
4 nights (approximately 32 hours) |
|
Secondary |
Maternal restless legs syndrome |
Present or absent, as determined by participant self report. |
4 nights (approximately 32 hours) |
|
Secondary |
Bed partner restless legs syndrome |
Present or absent, as determined by participant self report. |
4 nights (approximately 32 hours) |
|
Secondary |
Maternal total sleep time (TST) |
Average nightly total sleep time in minutes as determined by the home-sleep apnea monitor. |
4 nights (approximately 32 hours) |
|
Secondary |
Bed partner total sleep time (TST) |
Average nightly total sleep time in minutes as determined by the home-sleep apnea monitor. |
4 nights (approximately 32 hours) |
|
Secondary |
Maternal time in bed (TIB) |
Average nightly total time the participant is in bed. |
4 nights (approximately 32 hours) |
|
Secondary |
Bed partner time in bed (TIB) |
Average nightly total time the participant is in bed. |
4 nights (approximately 32 hours) |
|
Secondary |
Maternal sleep efficiency |
Average nightly percentage of total time in bed spent sleeping (ratio of TST to TIB multiplied by 100%). |
4 nights (approximately 32 hours) |
|
Secondary |
Bed partner sleep efficiency |
Average nightly percentage of total time in bed spent sleeping (ratio of TST to TIB multiplied by 100%). |
4 nights (approximately 32 hours) |
|
Secondary |
Maternal rapid eye movement (REM) sleep duration |
Average nightly time of REM sleep in minutes as determined by the home-sleep apnea monitor. |
4 nights (approximately 32 hours) |
|
Secondary |
Bed partner rapid eye movement (REM) sleep duration |
Average nightly time of REM sleep in minutes as determined by the home-sleep apnea monitor. |
4 nights (approximately 32 hours) |
|
Secondary |
Maternal snoring |
Present or absent as determined by manual review of audio from infrared video. |
4 nights (approximately 32 hours) |
|
Secondary |
Bed partner snoring |
Present or absent as determined by manual review of audio from infrared video. |
4 nights (approximately 32 hours) |
|
Secondary |
Minimum maternal heart rate (HR) |
Averaged nightly minimum HR, in beats per minute, as determined by the home-sleep apnea monitor. |
4 nights (approximately 32 hours) |
|
Secondary |
Minimum maternal respiration rate (RR) |
Averaged nightly minimum, in breaths per minute, as determined by manual review of audio and video from the infrared video data. |
4 nights (approximately 32 hours) |
|
Secondary |
Minimum bed partner respiration rate (RR) |
Averaged nightly minimum, in breaths per minute, as determined by manual review of audio and video from the infrared video data. |
4 nights (approximately 32 hours) |
|
Secondary |
Minimum bed partner heart rate (HR) |
Averaged nightly minimum HR, in beats per minute, as determined by the home-sleep apnea monitor. |
4 nights (approximately 32 hours) |
|
Secondary |
Minimum maternal peripheral blood oxygen saturation (SpO2) |
Averaged nightly minimum, in percent, as determined by the home-sleep apnea monitor. |
4 nights (approximately 32 hours) |
|
Secondary |
Minimum bed partner peripheral blood oxygen saturation (SpO2) |
Averaged nightly minimum, in percent, as determined by the home-sleep apnea monitor. |
4 nights (approximately 32 hours) |
|
Secondary |
Maximum maternal heart rate (HR) |
Averaged nightly maximum HR, in beats per minute, as determined by the home-sleep apnea monitor. |
4 nights (approximately 32 hours) |
|
Secondary |
Maximum bed partner heart rate (HR) |
Averaged nightly maximum HR, in beats per minute, as determined by the home-sleep apnea monitor. |
4 nights (approximately 32 hours) |
|
Secondary |
Maximum maternal respiration rate (RR) |
Averaged nightly maximum, in breaths per minute, as determined by manual review of audio and video from the infrared video data. |
4 nights (approximately 32 hours) |
|
Secondary |
Maximum bed partner respiration rate (RR) |
Averaged nightly maximum, in breaths per minute, as determined by manual review of audio and video from the infrared video data. |
4 nights (approximately 32 hours) |
|
Secondary |
Maximum maternal peripheral blood oxygen saturation (SpO2) |
Averaged nightly maximum, in percent, as determined by the home-sleep apnea monitor. |
4 nights (approximately 32 hours) |
|
Secondary |
Maximum bed partner peripheral blood oxygen saturation (SpO2) |
Averaged nightly maximum, in percent, as determined by the home-sleep apnea monitor. |
4 nights (approximately 32 hours) |
|
Secondary |
Average maternal heart rate (HR) |
Averaged nightly mean HR, in beats per minute, as determined by the home-sleep apnea monitor. |
4 nights (approximately 32 hours) |
|
Secondary |
Average bed partner heart rate (HR) |
Averaged nightly mean HR, in beats per minute, as determined by the home-sleep apnea monitor. |
4 nights (approximately 32 hours) |
|
Secondary |
Average maternal respiration rate (RR) |
Averaged nightly mean, in breaths per minute, as determined by manual review of audio and video from the infrared video data. |
4 nights (approximately 32 hours) |
|
Secondary |
Average bed partner respiration rate (RR) |
Averaged nightly mean, in breaths per minute, as determined by manual review of audio and video from the infrared video data. |
4 nights (approximately 32 hours) |
|
Secondary |
Average maternal peripheral blood oxygen saturation (SpO2) |
Averaged nightly mean, in percent, as determined by the home-sleep apnea monitor. |
4 nights (approximately 32 hours) |
|
Secondary |
Average bed partner peripheral blood oxygen saturation (SpO2) |
Averaged nightly mean, in percent, as determined by the home-sleep apnea monitor. |
4 nights (approximately 32 hours) |
|
Secondary |
Maternal heart rate variability - root mean square of successive differences |
Averaged nightly beat-to-beat variation as measured by the root mean square of successive differences (RMSSD). |
4 nights (approximately 32 hours) |
|
Secondary |
Fetal heart rate variability - root mean square of successive differences |
Averaged nightly beat-to-beat variation as measured by the root mean square of successive differences (RMSSD). |
4 nights (approximately 32 hours) |
|
Secondary |
Maternal heart rate variability - standard deviation of NN intervals |
Averaged nightly beat-to-beat variation as measured by the standard deviation of N-N intervals (SDNN). |
4 nights (approximately 32 hours) |
|
Secondary |
Fetal heart rate variability - standard deviation of NN intervals |
Averaged nightly beat-to-beat variation as measured by the standard deviation of N-N intervals (SDNN). |
4 nights (approximately 32 hours) |
|
Secondary |
Maternal skin pressure distribution thorax |
Averaged nightly mean pressure, in pounds per square inch (PSI), in the thorax region. |
4 nights (approximately 32 hours) |
|
Secondary |
Maternal skin pressure distribution abdomen |
Averaged nightly mean pressure, in pounds per square inch (PSI), in the abdominal region. |
4 nights (approximately 32 hours) |
|
Secondary |
Maternal skin pressure distribution pelvis |
Averaged nightly mean pressure, in pounds per square inch (PSI), in the pelvic region. |
4 nights (approximately 32 hours) |
|
Secondary |
Average fetal heart rate (FHR) |
Averaged nightly mean FHR, in beats per minute, as determined by the ambulatory maternal-fetal heart rate monitor. |
4 nights (approximately 32 hours) |
|
Secondary |
Minimum fetal heart rate (FHR) |
Averaged nightly minimum FHR, in beats per minute, as determined by the ambulatory maternal-fetal heart rate monitor. |
4 nights (approximately 32 hours) |
|
Secondary |
Maximum fetal heart rate (FHR) |
Averaged nightly maximum FHR, in beats per minute, as determined by the ambulatory maternal-fetal heart rate monitor. |
4 nights (approximately 32 hours) |
|