What is Category II or III fetal heart rate tracing?
Objective. NICHD Category III (CIII) fetal heart rate tracing (FHR) is defined as having either sinusoidal pattern or absent baseline variability plus recurrent late decelerations, recurrent variable decelerations, or bradycardia.
How do you categorize fetal heart tracing?
The interpretation of the fetal heart rate tracing should follow a systematic approach with a comprehensive description of the following:
- Baseline rate.
- Baseline fetal heart rate (FHR) variability.
- Presence of accelerations.
- Periodic or episodic decelerations.
- Changes or trends of FHR patterns over time.
What is a Category 3 tracing?
Category III tracings are predictive of abnormal fetal acid-base status at the time of observation.
What is a Category 1 fetal tracing?
Category I FHR tracings are strongly predictive of normal fetal acid–base status at the time of observation. Category I FHR trac- ings may be monitored in a routine manner, and no spe- cific action is required. Category II FHR tracings are indeterminate.
What is a Category 1 fetal heart rate?
Category I : Normal. The fetal heart rate tracing shows ALL of the following: Baseline FHR 110-160 BPM, moderate FHR variability, accelerations may be present or absent, no late or variable decelerations, may have early decelerations. Strongly predictive of normal acid-base status at the time of observation.
How do you determine fetal baseline heart rate?
The baseline FHR is the heart rate during a 10 minute segment rounded to the nearest 5 beat per minute increment excluding periods of marked FHR variability, periodic or episodic changes, and segments of baseline that differ by more than 25 beats per minute. The minimum baseline duration must be at least 2 minutes.
What is CAT II Tracing?
The label of “Cat-II tracing” is given to all FHR patterns that cannot be assigned to Cat I or Cat III. A Cat-II tracing is neither normal nor definitively abnormal. Namely: If FHR accelerations or moderate variability are detected, the fetus is unlikely to be currently acidemic.
What is Toco on fetal monitor?
Toco Transducer. The second component of a fetal monitor is the tocodynamometer. This device measures the relative strength, rate, and duration of uterine contractions. It is basically a ring-style pressure transducer attached to the maternal abdomen via a belt that maintains tight continuous contact with the abdomen.
What Toco number is a strong contraction?
During true labor, the intensity of a contraction is between 40-60 mmHg in the beginning of the active phase, which occurs when your cervix dilates from 6 to 10 centimeters, and your contractions become stronger, closer together and regular.
What is a reactive fetal heart tracing?
At week 32 of pregnancy or later, if your baby’s heartbeat accelerates to a certain level above the baseline twice or more for at least 15 seconds each within a 20-minute window, the results are considered reactive.