Trial Outcomes & Findings for Determination of the Predictors of Nocturnal Desaturation in Postpartum Women (NCT NCT02330055)

NCT ID: NCT02330055

Last Updated: 2018-07-06

Results Overview

Oxygen Saturation (SpO2) value below 90%, assessed by pulse oximetry during the first night after delivery

Recruitment status

COMPLETED

Study phase

NA

Target enrollment

99 participants

Primary outcome timeframe

48 hours after delivery

Results posted on

2018-07-06

Participant Flow

Participant milestones

Participant milestones
Measure
Non-elevated Upper Body Position
If the patient is randomized in this study arm after enrollment, the investigators will flatten the patients upper body to a supine position prior to sleeping. The patient will wear a pulseoximeter (WristOx Model 3150) during the night. The investigators will collect the SpO2 and pulse rate with this device and then quantify desaturation events. The investigators will ask the patient to fill out a questionnaire, which includes the P-SAP score, the STOP-BANG score, the Epworth Sleepiness Scale and the self-reported pain. non-elevated upper body position Noninvasive wrist pulse oximeter (WristOx Model 3150): The noninvasive wrist pulse oximeter (WristOx Model 3150) is used to measure the SpO2 and the pulse rate of the patient in the first night after delivery. Stop-Bang questionnaire: The Stop-Bang questionnaire is a well-established clinical tool to quantify the risk factors of Obstructive Sleep Apnea, which can lead to desaturation in the patient. The STOP Bang questionnaire
Forty-five Degrees Elevated Upper Body Position
If the patient is randomized in this study arm after enrollment, the investigators will elevate the patients upper body to 45 degree prior to sleeping. The patient will wear a pulseoximeter (WristOx Model 3150) during the night. The investigators will collect the SpO2 and pulse rate with this device and then quantify desaturation events. The investigators will ask the patient to fill out a questionnaire, which includes the P-SAP score, the STOP-BANG score, the Epworth Sleepiness Scale and the self-reported pain. Forty-five degrees elevated upper body position Noninvasive wrist pulse oximeter (WristOx Model 3150): The noninvasive wrist pulse oximeter (WristOx Model 3150) is used to measure the SpO2 and the pulse rate of the patient in the first night after delivery. Stop-Bang questionnaire: The Stop-Bang questionnaire is a well-established clinical tool to quantify the risk factors of Obstructive Sleep Apnea, which can lead to desaturation in the patient.
Overall Study
STARTED
50
49
Overall Study
COMPLETED
40
40
Overall Study
NOT COMPLETED
10
9

Reasons for withdrawal

Reasons for withdrawal
Measure
Non-elevated Upper Body Position
If the patient is randomized in this study arm after enrollment, the investigators will flatten the patients upper body to a supine position prior to sleeping. The patient will wear a pulseoximeter (WristOx Model 3150) during the night. The investigators will collect the SpO2 and pulse rate with this device and then quantify desaturation events. The investigators will ask the patient to fill out a questionnaire, which includes the P-SAP score, the STOP-BANG score, the Epworth Sleepiness Scale and the self-reported pain. non-elevated upper body position Noninvasive wrist pulse oximeter (WristOx Model 3150): The noninvasive wrist pulse oximeter (WristOx Model 3150) is used to measure the SpO2 and the pulse rate of the patient in the first night after delivery. Stop-Bang questionnaire: The Stop-Bang questionnaire is a well-established clinical tool to quantify the risk factors of Obstructive Sleep Apnea, which can lead to desaturation in the patient. The STOP Bang questionnaire
Forty-five Degrees Elevated Upper Body Position
If the patient is randomized in this study arm after enrollment, the investigators will elevate the patients upper body to 45 degree prior to sleeping. The patient will wear a pulseoximeter (WristOx Model 3150) during the night. The investigators will collect the SpO2 and pulse rate with this device and then quantify desaturation events. The investigators will ask the patient to fill out a questionnaire, which includes the P-SAP score, the STOP-BANG score, the Epworth Sleepiness Scale and the self-reported pain. Forty-five degrees elevated upper body position Noninvasive wrist pulse oximeter (WristOx Model 3150): The noninvasive wrist pulse oximeter (WristOx Model 3150) is used to measure the SpO2 and the pulse rate of the patient in the first night after delivery. Stop-Bang questionnaire: The Stop-Bang questionnaire is a well-established clinical tool to quantify the risk factors of Obstructive Sleep Apnea, which can lead to desaturation in the patient.
Overall Study
technical issues
2
0
Overall Study
participant forgot to wear device
5
5
Overall Study
data for less than 60 minutes
3
3
Overall Study
participant did not sleep
0
1

Baseline Characteristics

Determination of the Predictors of Nocturnal Desaturation in Postpartum Women

Baseline characteristics by cohort

Baseline characteristics by cohort
Measure
Non-elevated Upper Body Position
n=40 Participants
If the patient is randomized in this study arm after enrollment, the investigators will flatten the patients upper body to a supine position prior to sleeping. The patient will wear a pulseoximeter (WristOx Model 3150) during the night. The investigators will collect the SpO2 and pulse rate with this device and then quantify desaturation events. The investigators will ask the patient to fill out a questionnaire, which includes the P-SAP score, the STOP-BANG score, the Epworth Sleepiness Scale and the self-reported pain. non-elevated upper body position Noninvasive wrist pulse oximeter (WristOx Model 3150): The noninvasive wrist pulse oximeter (WristOx Model 3150) is used to measure the SpO2 and the pulse rate of the patient in the first night after delivery. Stop-Bang questionnaire: The Stop-Bang questionnaire is a well-established clinical tool to quantify the risk factors of Obstructive Sleep Apnea, which can lead to desaturation in the patient. The STOP Bang questionnaire
Forty-five Degrees Elevated Upper Body Position
n=40 Participants
If the patient is randomized in this study arm after enrollment, the investigators will elevate the patients upper body to 45 degree prior to sleeping. The patient will wear a pulseoximeter (WristOx Model 3150) during the night. The investigators will collect the SpO2 and pulse rate with this device and then quantify desaturation events. The investigators will ask the patient to fill out a questionnaire, which includes the P-SAP score, the STOP-BANG score, the Epworth Sleepiness Scale and the self-reported pain. Forty-five degrees elevated upper body position Noninvasive wrist pulse oximeter (WristOx Model 3150): The noninvasive wrist pulse oximeter (WristOx Model 3150) is used to measure the SpO2 and the pulse rate of the patient in the first night after delivery. Stop-Bang questionnaire: The Stop-Bang questionnaire is a well-established clinical tool to quantify the risk factors of Obstructive Sleep Apnea, which can lead to desaturation in the patient.
Total
n=80 Participants
Total of all reporting groups
Age, Continuous
34.5 years
STANDARD_DEVIATION 5.5 • n=5 Participants
32.5 years
STANDARD_DEVIATION 5 • n=7 Participants
33 years
STANDARD_DEVIATION 5 • n=5 Participants
Sex: Female, Male
Female
40 Participants
n=5 Participants
40 Participants
n=7 Participants
80 Participants
n=5 Participants
Sex: Female, Male
Male
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
Ethnicity (NIH/OMB)
Hispanic or Latino
6 Participants
n=5 Participants
4 Participants
n=7 Participants
10 Participants
n=5 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
31 Participants
n=5 Participants
32 Participants
n=7 Participants
63 Participants
n=5 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
3 Participants
n=5 Participants
4 Participants
n=7 Participants
7 Participants
n=5 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
Race (NIH/OMB)
Asian
4 Participants
n=5 Participants
2 Participants
n=7 Participants
6 Participants
n=5 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
Race (NIH/OMB)
Black or African American
3 Participants
n=5 Participants
2 Participants
n=7 Participants
5 Participants
n=5 Participants
Race (NIH/OMB)
White
25 Participants
n=5 Participants
32 Participants
n=7 Participants
57 Participants
n=5 Participants
Race (NIH/OMB)
More than one race
0 Participants
n=5 Participants
1 Participants
n=7 Participants
1 Participants
n=5 Participants
Race (NIH/OMB)
Unknown or Not Reported
8 Participants
n=5 Participants
3 Participants
n=7 Participants
11 Participants
n=5 Participants
Delivery Type
Vaginal
20 Participants
n=5 Participants
20 Participants
n=7 Participants
40 Participants
n=5 Participants
Delivery Type
Cesarean section
20 Participants
n=5 Participants
20 Participants
n=7 Participants
40 Participants
n=5 Participants

PRIMARY outcome

Timeframe: 48 hours after delivery

Oxygen Saturation (SpO2) value below 90%, assessed by pulse oximetry during the first night after delivery

Outcome measures

Outcome measures
Measure
Non-elevated Upper Body Position
n=40 Participants
If the patient is randomized in this study arm after enrollment, the investigators will flatten the patients upper body to a supine position prior to sleeping. The patient will wear a pulseoximeter (WristOx Model 3150) during the night. The investigators will collect the SpO2 and pulse rate with this device and then quantify desaturation events. The investigators will ask the patient to fill out a questionnaire, which includes the P-SAP score, the STOP-BANG score, the Epworth Sleepiness Scale and the self-reported pain. non-elevated upper body position Noninvasive wrist pulse oximeter (WristOx Model 3150): The noninvasive wrist pulse oximeter (WristOx Model 3150) is used to measure the SpO2 and the pulse rate of the patient in the first night after delivery. Stop-Bang questionnaire: The Stop-Bang questionnaire is a well-established clinical tool to quantify the risk factors of Obstructive Sleep Apnea, which can lead to desaturation in the patient. The STOP Bang questionnaire
Forty-five Degrees Elevated Upper Body Position
n=40 Participants
If the patient is randomized in this study arm after enrollment, the investigators will elevate the patients upper body to 45 degree prior to sleeping. The patient will wear a pulseoximeter (WristOx Model 3150) during the night. The investigators will collect the SpO2 and pulse rate with this device and then quantify desaturation events. The investigators will ask the patient to fill out a questionnaire, which includes the P-SAP score, the STOP-BANG score, the Epworth Sleepiness Scale and the self-reported pain. Forty-five degrees elevated upper body position Noninvasive wrist pulse oximeter (WristOx Model 3150): The noninvasive wrist pulse oximeter (WristOx Model 3150) is used to measure the SpO2 and the pulse rate of the patient in the first night after delivery. Stop-Bang questionnaire: The Stop-Bang questionnaire is a well-established clinical tool to quantify the risk factors of Obstructive Sleep Apnea, which can lead to desaturation in the patient.
SpO2 < 90%
All Types of Delivery
0.4 minutes
Interval 0.0 to 6.4
0.0 minutes
Interval 0.0 to 0.5
SpO2 < 90%
Vaginal Delivery
0.1 minutes
Interval 0.0 to 0.3
0.0 minutes
Interval 0.0 to 0.1
SpO2 < 90%
Cesarean Section
4.1 minutes
Interval 0.9 to 19.8
0.2 minutes
Interval 0.0 to 1.8

SECONDARY outcome

Timeframe: 48 hours after delivery

ODI (oxygen desaturation index), assessed by pulse oximetry during the first night after delivery. ODI is defined as number of desaturation events per hour; a desaturation event is defined as drop in SpO2 of 3% or more from baseline SpO2. Baseline SpO2 is defined as the mean SpO2 of the SpO2 values taken over the preceding 120 seconds.

Outcome measures

Outcome measures
Measure
Non-elevated Upper Body Position
n=50 Participants
If the patient is randomized in this study arm after enrollment, the investigators will flatten the patients upper body to a supine position prior to sleeping. The patient will wear a pulseoximeter (WristOx Model 3150) during the night. The investigators will collect the SpO2 and pulse rate with this device and then quantify desaturation events. The investigators will ask the patient to fill out a questionnaire, which includes the P-SAP score, the STOP-BANG score, the Epworth Sleepiness Scale and the self-reported pain. non-elevated upper body position Noninvasive wrist pulse oximeter (WristOx Model 3150): The noninvasive wrist pulse oximeter (WristOx Model 3150) is used to measure the SpO2 and the pulse rate of the patient in the first night after delivery. Stop-Bang questionnaire: The Stop-Bang questionnaire is a well-established clinical tool to quantify the risk factors of Obstructive Sleep Apnea, which can lead to desaturation in the patient. The STOP Bang questionnaire
Forty-five Degrees Elevated Upper Body Position
n=49 Participants
If the patient is randomized in this study arm after enrollment, the investigators will elevate the patients upper body to 45 degree prior to sleeping. The patient will wear a pulseoximeter (WristOx Model 3150) during the night. The investigators will collect the SpO2 and pulse rate with this device and then quantify desaturation events. The investigators will ask the patient to fill out a questionnaire, which includes the P-SAP score, the STOP-BANG score, the Epworth Sleepiness Scale and the self-reported pain. Forty-five degrees elevated upper body position Noninvasive wrist pulse oximeter (WristOx Model 3150): The noninvasive wrist pulse oximeter (WristOx Model 3150) is used to measure the SpO2 and the pulse rate of the patient in the first night after delivery. Stop-Bang questionnaire: The Stop-Bang questionnaire is a well-established clinical tool to quantify the risk factors of Obstructive Sleep Apnea, which can lead to desaturation in the patient.
Oxygen Desaturation Index > 3
4.0 1/hr
Interval 2.6 to 6.5
3.2 1/hr
Interval 2.2 to 5.8

SECONDARY outcome

Timeframe: 48 hours after delivery

Basic pulseoximetry in the first night after delivery

Outcome measures

Outcome measures
Measure
Non-elevated Upper Body Position
n=40 Participants
If the patient is randomized in this study arm after enrollment, the investigators will flatten the patients upper body to a supine position prior to sleeping. The patient will wear a pulseoximeter (WristOx Model 3150) during the night. The investigators will collect the SpO2 and pulse rate with this device and then quantify desaturation events. The investigators will ask the patient to fill out a questionnaire, which includes the P-SAP score, the STOP-BANG score, the Epworth Sleepiness Scale and the self-reported pain. non-elevated upper body position Noninvasive wrist pulse oximeter (WristOx Model 3150): The noninvasive wrist pulse oximeter (WristOx Model 3150) is used to measure the SpO2 and the pulse rate of the patient in the first night after delivery. Stop-Bang questionnaire: The Stop-Bang questionnaire is a well-established clinical tool to quantify the risk factors of Obstructive Sleep Apnea, which can lead to desaturation in the patient. The STOP Bang questionnaire
Forty-five Degrees Elevated Upper Body Position
n=40 Participants
If the patient is randomized in this study arm after enrollment, the investigators will elevate the patients upper body to 45 degree prior to sleeping. The patient will wear a pulseoximeter (WristOx Model 3150) during the night. The investigators will collect the SpO2 and pulse rate with this device and then quantify desaturation events. The investigators will ask the patient to fill out a questionnaire, which includes the P-SAP score, the STOP-BANG score, the Epworth Sleepiness Scale and the self-reported pain. Forty-five degrees elevated upper body position Noninvasive wrist pulse oximeter (WristOx Model 3150): The noninvasive wrist pulse oximeter (WristOx Model 3150) is used to measure the SpO2 and the pulse rate of the patient in the first night after delivery. Stop-Bang questionnaire: The Stop-Bang questionnaire is a well-established clinical tool to quantify the risk factors of Obstructive Sleep Apnea, which can lead to desaturation in the patient.
Minimal & Mean SpO2
Basal (Mean) SPO2
94.7 percentage of hemoglobin in the blood
Interval 93.4 to 95.4
95.2 percentage of hemoglobin in the blood
Interval 94.5 to 96.1
Minimal & Mean SpO2
Nadir (Minimum) SPO2
87 percentage of hemoglobin in the blood
Interval 82.0 to 90.0
90 percentage of hemoglobin in the blood
Interval 87.0 to 92.0

SECONDARY outcome

Timeframe: 48 hours after delivery

Population: The number analyzed per row differs from the overall number because the analysis was distinguished down by type of delivery and upper body position. Thus, 20 patients belong to each group as seen below.

A Perioperative sleep apnea prediction (P-SAP) Score. This score ranges from 0 to 69, 0 representing low risk of obstructive sleep apnea and 69 representing high risk of obstructive sleep apnea.

Outcome measures

Outcome measures
Measure
Non-elevated Upper Body Position
n=40 Participants
If the patient is randomized in this study arm after enrollment, the investigators will flatten the patients upper body to a supine position prior to sleeping. The patient will wear a pulseoximeter (WristOx Model 3150) during the night. The investigators will collect the SpO2 and pulse rate with this device and then quantify desaturation events. The investigators will ask the patient to fill out a questionnaire, which includes the P-SAP score, the STOP-BANG score, the Epworth Sleepiness Scale and the self-reported pain. non-elevated upper body position Noninvasive wrist pulse oximeter (WristOx Model 3150): The noninvasive wrist pulse oximeter (WristOx Model 3150) is used to measure the SpO2 and the pulse rate of the patient in the first night after delivery. Stop-Bang questionnaire: The Stop-Bang questionnaire is a well-established clinical tool to quantify the risk factors of Obstructive Sleep Apnea, which can lead to desaturation in the patient. The STOP Bang questionnaire
Forty-five Degrees Elevated Upper Body Position
n=40 Participants
If the patient is randomized in this study arm after enrollment, the investigators will elevate the patients upper body to 45 degree prior to sleeping. The patient will wear a pulseoximeter (WristOx Model 3150) during the night. The investigators will collect the SpO2 and pulse rate with this device and then quantify desaturation events. The investigators will ask the patient to fill out a questionnaire, which includes the P-SAP score, the STOP-BANG score, the Epworth Sleepiness Scale and the self-reported pain. Forty-five degrees elevated upper body position Noninvasive wrist pulse oximeter (WristOx Model 3150): The noninvasive wrist pulse oximeter (WristOx Model 3150) is used to measure the SpO2 and the pulse rate of the patient in the first night after delivery. Stop-Bang questionnaire: The Stop-Bang questionnaire is a well-established clinical tool to quantify the risk factors of Obstructive Sleep Apnea, which can lead to desaturation in the patient.
P-SAP Score
Vaginal Delivery
1 units on a scale
Interval 1.0 to 2.0
1 units on a scale
Interval 0.0 to 2.0
P-SAP Score
Cesarean Section
2 units on a scale
Interval 2.0 to 3.0
2 units on a scale
Interval 1.0 to 3.0

SECONDARY outcome

Timeframe: 48 hours after delivery

The STOP BANG (This abbreviation consists of the first letter of each question in the questionnaire. S-Snore, T-Tired, O-Observed stop in breathing, P-High blood pressure, B-BMI, A - Age, N-Neck circumference, G-Gender. This questionnaire is a proven tool that can be used to screen for obstructive sleep apnea (OSA). This tool will assess if you are low, moderate or high risk group for sleep apnea. Scores range from 0-8. 0 indicates low risk for sleep apnea, 8 indicates high risk for sleep apnea.

Outcome measures

Outcome measures
Measure
Non-elevated Upper Body Position
n=40 Participants
If the patient is randomized in this study arm after enrollment, the investigators will flatten the patients upper body to a supine position prior to sleeping. The patient will wear a pulseoximeter (WristOx Model 3150) during the night. The investigators will collect the SpO2 and pulse rate with this device and then quantify desaturation events. The investigators will ask the patient to fill out a questionnaire, which includes the P-SAP score, the STOP-BANG score, the Epworth Sleepiness Scale and the self-reported pain. non-elevated upper body position Noninvasive wrist pulse oximeter (WristOx Model 3150): The noninvasive wrist pulse oximeter (WristOx Model 3150) is used to measure the SpO2 and the pulse rate of the patient in the first night after delivery. Stop-Bang questionnaire: The Stop-Bang questionnaire is a well-established clinical tool to quantify the risk factors of Obstructive Sleep Apnea, which can lead to desaturation in the patient. The STOP Bang questionnaire
Forty-five Degrees Elevated Upper Body Position
n=40 Participants
If the patient is randomized in this study arm after enrollment, the investigators will elevate the patients upper body to 45 degree prior to sleeping. The patient will wear a pulseoximeter (WristOx Model 3150) during the night. The investigators will collect the SpO2 and pulse rate with this device and then quantify desaturation events. The investigators will ask the patient to fill out a questionnaire, which includes the P-SAP score, the STOP-BANG score, the Epworth Sleepiness Scale and the self-reported pain. Forty-five degrees elevated upper body position Noninvasive wrist pulse oximeter (WristOx Model 3150): The noninvasive wrist pulse oximeter (WristOx Model 3150) is used to measure the SpO2 and the pulse rate of the patient in the first night after delivery. Stop-Bang questionnaire: The Stop-Bang questionnaire is a well-established clinical tool to quantify the risk factors of Obstructive Sleep Apnea, which can lead to desaturation in the patient.
STOP-BANG Score
Vaginal Delivery
1 units on a scale
Interval 0.0 to 1.0
1 units on a scale
Interval 0.0 to 1.0
STOP-BANG Score
Cesarean Section
1 units on a scale
Interval 1.0 to 2.0
2 units on a scale
Interval 1.0 to 2.0

SECONDARY outcome

Timeframe: 48 hours after delivery

Assessment of intensity of acute pain. Measured from 0-10, 0 being no pain and 10 being highest level of pain.

Outcome measures

Outcome measures
Measure
Non-elevated Upper Body Position
n=40 Participants
If the patient is randomized in this study arm after enrollment, the investigators will flatten the patients upper body to a supine position prior to sleeping. The patient will wear a pulseoximeter (WristOx Model 3150) during the night. The investigators will collect the SpO2 and pulse rate with this device and then quantify desaturation events. The investigators will ask the patient to fill out a questionnaire, which includes the P-SAP score, the STOP-BANG score, the Epworth Sleepiness Scale and the self-reported pain. non-elevated upper body position Noninvasive wrist pulse oximeter (WristOx Model 3150): The noninvasive wrist pulse oximeter (WristOx Model 3150) is used to measure the SpO2 and the pulse rate of the patient in the first night after delivery. Stop-Bang questionnaire: The Stop-Bang questionnaire is a well-established clinical tool to quantify the risk factors of Obstructive Sleep Apnea, which can lead to desaturation in the patient. The STOP Bang questionnaire
Forty-five Degrees Elevated Upper Body Position
n=40 Participants
If the patient is randomized in this study arm after enrollment, the investigators will elevate the patients upper body to 45 degree prior to sleeping. The patient will wear a pulseoximeter (WristOx Model 3150) during the night. The investigators will collect the SpO2 and pulse rate with this device and then quantify desaturation events. The investigators will ask the patient to fill out a questionnaire, which includes the P-SAP score, the STOP-BANG score, the Epworth Sleepiness Scale and the self-reported pain. Forty-five degrees elevated upper body position Noninvasive wrist pulse oximeter (WristOx Model 3150): The noninvasive wrist pulse oximeter (WristOx Model 3150) is used to measure the SpO2 and the pulse rate of the patient in the first night after delivery. Stop-Bang questionnaire: The Stop-Bang questionnaire is a well-established clinical tool to quantify the risk factors of Obstructive Sleep Apnea, which can lead to desaturation in the patient.
Pain-score on a Verbal Numerical Rating Scale
Vaginal Delivery
3 units on a scale
Interval 1.0 to 4.0
3 units on a scale
Interval 2.0 to 5.0
Pain-score on a Verbal Numerical Rating Scale
Cesarean Section
4 units on a scale
Interval 2.0 to 6.0
4 units on a scale
Interval 3.0 to 6.0

SECONDARY outcome

Timeframe: 48 Hours after delivery

As measured in beats per minute

Outcome measures

Outcome measures
Measure
Non-elevated Upper Body Position
n=40 Participants
If the patient is randomized in this study arm after enrollment, the investigators will flatten the patients upper body to a supine position prior to sleeping. The patient will wear a pulseoximeter (WristOx Model 3150) during the night. The investigators will collect the SpO2 and pulse rate with this device and then quantify desaturation events. The investigators will ask the patient to fill out a questionnaire, which includes the P-SAP score, the STOP-BANG score, the Epworth Sleepiness Scale and the self-reported pain. non-elevated upper body position Noninvasive wrist pulse oximeter (WristOx Model 3150): The noninvasive wrist pulse oximeter (WristOx Model 3150) is used to measure the SpO2 and the pulse rate of the patient in the first night after delivery. Stop-Bang questionnaire: The Stop-Bang questionnaire is a well-established clinical tool to quantify the risk factors of Obstructive Sleep Apnea, which can lead to desaturation in the patient. The STOP Bang questionnaire
Forty-five Degrees Elevated Upper Body Position
n=40 Participants
If the patient is randomized in this study arm after enrollment, the investigators will elevate the patients upper body to 45 degree prior to sleeping. The patient will wear a pulseoximeter (WristOx Model 3150) during the night. The investigators will collect the SpO2 and pulse rate with this device and then quantify desaturation events. The investigators will ask the patient to fill out a questionnaire, which includes the P-SAP score, the STOP-BANG score, the Epworth Sleepiness Scale and the self-reported pain. Forty-five degrees elevated upper body position Noninvasive wrist pulse oximeter (WristOx Model 3150): The noninvasive wrist pulse oximeter (WristOx Model 3150) is used to measure the SpO2 and the pulse rate of the patient in the first night after delivery. Stop-Bang questionnaire: The Stop-Bang questionnaire is a well-established clinical tool to quantify the risk factors of Obstructive Sleep Apnea, which can lead to desaturation in the patient.
Average Pulse Rate
78.8 beats per minute
Interval 69.9 to 86.1
75.2 beats per minute
Interval 68.6 to 87.3

Adverse Events

Non-elevated Upper Body Position

Serious events: 0 serious events
Other events: 0 other events
Deaths: 0 deaths

Forty-five Degrees Elevated Upper Body Position

Serious events: 0 serious events
Other events: 0 other events
Deaths: 0 deaths

Serious adverse events

Adverse event data not reported

Other adverse events

Adverse event data not reported

Additional Information

Dr. Matthias Eikermann

Beth Israel Deaconess Medical Center

Phone: 6176673364

Results disclosure agreements

  • Principal investigator is a sponsor employee
  • Publication restrictions are in place