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Ambulation for Latency During Expectant Management of PPROM

Ambulation for Latency During Expectant Management of PPROM: A Randomized Controlled Trial (AMBLE)

Status
Completed
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04230967
Acronym
AMBLE
Enrollment
100
Registered
2020-01-18
Start date
2020-03-10
Completion date
2023-03-30
Last updated
2023-08-28

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Pregnancy Complications, Pregnancy, High Risk, Preterm Premature Rupture of the Membranes

Keywords

pregnancy, PPROM

Brief summary

Ambulation in pregnancy has been proposed to decrease stress and anxiety, increasing preterm birth. Whether ambulation is causally related to latency is unknown. The FitBit will be used for tracking the number of steps taken daily by each participant, and for encouraging the intervention group to walk. The FitBit is the most widely used physical activity tracker in medical research, and its use has been validated for research use in pregnant women. The purpose of the study is to evaluate whether ambulation in patients with preterm premature rupture of the membranes (PPROM) prolongs latency.

Interventions

BEHAVIORALAmbulation Group

Participants in the ambulation arm will be allowed ad lib activity and instructed that they should walk at least once per day out of their room with a goal of 2,000 steps per day. The Fitbit Inspire devices will be set to this goal and notifications will be given on the device for the participants meeting their goals

BEHAVIORALRoutine Care

No encouragement to ambulate will be provided to subjects. Their movement will be recorded

Sponsors

Fitbit Health Solutions
CollaboratorUNKNOWN
Thrasher Research Fund
CollaboratorOTHER
The University of Texas Health Science Center, Houston
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
OTHER
Masking
NONE

Eligibility

Sex/Gender
FEMALE
Age
12 Years to 55 Years
Healthy volunteers
No

Inclusion criteria

* Pregnant women aged 12-55 * Gestational age 23 0/7 to 35 0/7 weeks * PPROM confirmed by clinical diagnosis which includes sterile speculum examination with pooling, ferning, and nitrazine tests, or the Amnisure ROM Test * Planned inpatient expectant management with delivery goal \>=7 days from enrollment * Ability to provide informed consent in English or Spanish

Exclusion criteria

* Imminent delivery * Transverse or footling breech presentation (if multiple gestation, presenting fetus) * Unstable lie (if multiple gestation, presenting fetus) * Funic presentation (if multiple gestation, presenting fetus) * Active vaginal bleeding * Regular, painful contractions (\>=3 in 10 minutes for 30 minutes or more) consistent with labor * Clinical contraindication to ambulation as determined by the managing physician * Physician declines to have the patient approached for participation * Lethal fetal anomalies

Design outcomes

Primary

MeasureTime frame
Latency (measured in days) from from randomization to delivery12 weeks

Secondary

MeasureTime frameDescription
# of subjects with Placental abruptionat delivery
# of subjects with Cesarean delivery (and emergent cesarean delivery)at delivery
# of subjects with Umbilical cord prolapseat delivery
# of subjects with Maternal venous thromboembolismat delivery
Maternal Readmissionwithin 6 weeks of delivery- 6 weeks
Time to delivery (time-to-event outcome)12 weeks
Delivered at >7 days post randomizationat delivery
Maternal antepartum hospitalization length of stayfrom admission to delivery
Measurement of Stress outcomes utilizing Perceived Stress Scale (PSS)7 dayscomparison between 2 groups- as measured by validated Stress survey. Scaled 0-4 corresponding response of Never to very often respectively. Change from baseline to day 7
Measurement of Anxiety outcomes utilizing State Trait Anxiety Inventory (STAI)7 dayscomparison between 2 groups-as measured by validated anxiety survey. Scaled 1-4 corresponding response of Not at all to very much so. Change from baseline to day 7
Measurement of Depression outcomes utilizing Edinburgh Depression Scale (EDS)7 dayscomparison between 2 groups-as measured by validated depression scale. Maximum score: 30 Possible Depression: 10 or greater Always look at item 10 (suicidal thoughts) Change from baseline to day 7
Measurement of Patient Satisfaction by validated satisfaction survey between 2 groupsat deliverycomparison between 2 groups-as measured by validated survey from the last questionnaire answered prior to delivery
Fetal or neonatal deathat discharge
Maternal Infectious morbidityat deliveryChorioamnionitis, endometritis
Umbilical arterial pH < 7.00at delivery
# of neonates with Small for gestational ageat deliverydefined as \< 5th percentile weight for gestational age, assessed specifically by sex and race of the infant based on United States birth certificate data
# of neonates with Neonatal intraventricular hemorrhage (IVH) grades III or IVat dischargeas determined by cranial ultrasounds performed as part of routine clinical care and classified based on the Papule classification system
# of neonates with Neonatal periventricular leukomalacia (PVL)at discharge
# of neonates with Neonatal necrotizing enterocolitis (NEC)at discharge
# of neonates with Neonatal retinopathy of prematurity (ROP).at dischargeThis diagnosis will be reached when an ophthalmologic examination of the retina has been performed and ROP is diagnosed at Stage I (demarcation line in the retina) or greater.
# of neonates with Bronchopulmonary dysplasia (BPD)at dischargedefined as oxygen requirement at 28 days of life or at 36 weeks postmenstrual age for infants born before 32 weeks.
Gestational age at delivery < 28 weeksat delivery
Gestational age at delivery < 34 weeksat delivery
Neonatal length of hospital stay, based on admission to NICU or intermediate care unitat discharge
Composite adverse maternal outcome (CMAO)at discharge
Composite adverse fetal/neonatal outcomeat discharge
Apgar score < 5 at 5 minutes of lifeat delivery

Countries

United States

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026