scholarly journals Uterine Tachysystole with Prolonged Deceleration Following Nipple Stimulation for Labor Augmentation

2017 ◽  
Vol 13 (3) ◽  
pp. 268-270
Author(s):  
D.M. Narasimhulu ◽  
L. Zhu
Keyword(s):  
Heart Rate ◽  
Fetal Heart Rate ◽  
Stress Testing ◽  
18Th Century ◽  
Fetal Heart ◽  
Singleton Pregnancy ◽  
Uterine Contractions ◽  
Contraction Stress ◽  
Lateral Positioning ◽  
Labor Augmentation

Breast stimulation for inducing uterine contractions has been reported in the medical literature since the 18th century. The American college of Obstetricians and Gynecologists (ACOG) has described nipple stimulation as a natural and inexpensive nonmedical method for inducing labor.We report on a 37 year old P2 with a singleton pregnancy at 40 weeks gestation who developed tachysystole with a prolonged deceleration after nipple stimulation for augmentation of labor. Initial resuscitative measures, including oxygen by mask, a bolus of intravenous fluids and left lateral positioning, did not restore the fetal heart rate to normal. After the administration of Terbutaline 250 mcg subcutaneously, the tachysystole resolved and the fetal heart rate recovered after five minutes of bradycardia.Most trials of nipple stimulation for induction or augmentation of labor have had small study populations, and no conclusions could be drawn about the safety of nipple stimulation, though its use is widespread. While there have been a few reports of similar complications during nipple stimulation for contraction stress testing, there are no previous reports of tachysystole with sustained bradycardia following nipple stimulation for labor augmentation.In this report, we draw attention to the dangers of nipple stimulation so that providers will be aware of this potential complication.

scholarly journals Reference values for fetal heart rate in cattle in the first trimester of pregnancy

2019 ◽  
Vol 67 (2) ◽  
pp. 274-281
Author(s):  
Lea Lénárt ◽  
Marcel Taverne ◽  
Peter Wolleswinkel ◽  
Zoltán Gubik ◽  
László Molnár ◽  
...  
Keyword(s):  
Heart Rate ◽  
Fetal Heart Rate ◽  
Fetal Heart ◽  
First Trimester ◽  
Reference Curve ◽  
Singleton Pregnancy ◽  
Array Transducer ◽  
Significant Difference ◽  
Bovine Fetuses ◽  
First Trimester Of Pregnancy

The aim of this study was to create a fetal heart rate (FHR) reference curve for singleton bovine fetuses in the first trimester of gestation and to determine its possible relationship with the outcome of pregnancy. Forty-eight Holstein-Friesian cows with one fetus and five cows with twins were used. Fetal heart beatings were recorded on videotape during transrectal scanning with a 5 and/or 7.5 MHz linear array transducer on a weekly basis between Days 40 and 95 of gestation. FHR was calculated by averaging the results of five counts of the same record by the same observer. For singleton pregnancies, a reference curve was created using the mean, the standard deviation (SD) and the 5th and 95th percentiles. The FHR increased from Days 40–46 (173 beats/min) to Days 61–67 (183 beats/min). After a peak, the FHR decreased slowly until Days 89–95 (175 beats/min), while the SD increased. There was no significant difference between singleton and twin fetuses. in the aborted and lost fetuses in twin gestation due to fetal reduction, both bradycardia and tachycardia were detected compared to the singleton pregnancy reference curve.

scholarly journals Recognising Fetal Compromise in the Cardiograph during the Antenatal Period: Pearls and Pitfalls

2020 ◽  
pp. 72-83
Author(s):  
Susana Pereira ◽  
Caron Ingram ◽  
Neerja Gupta ◽  
Mandeep Singh ◽  
Edwin Chandraharan
Keyword(s):  
At Risk ◽  
Heart Rate ◽  
Neurological Disorders ◽  
Fetal Heart Rate ◽  
Fetal Heart ◽  
International Guidelines ◽  
Antenatal Period ◽  
Uterine Contractions ◽  
Computerised Analysis ◽  
Fetal Compromise

There are several national and international guidelines to aid the interpretation of the cardiotocograph (CTG) trace during labour. These guidelines are based on assessing changes in the fetal heart rate (i.e. cardiograph) in response to mechanical and hypoxic stresses during labour secondary to ongoing frequency, duration and strength of uterine contractions (i.e. tocograph). However, during the antenatal period, uterine contractions are absent, and therefore, these intrapartum CTG guidelines cannot be used to reliably identify fetuses at risk of compromise. Computerised analysis of CTG using the Dawes-Redman Criteria could be used to detect fetal compromise. However, clinicians should be aware of the multiple pathways of fetal damage (i.e. inflammation, infection, intrauterine fetal stroke, chronic fetal anaemia, acute feto-maternal haemorrhage and fetal cardiac or neurological disorders) which can cause changes on the CTG trace which may not be recognised by using CTG guidelines.

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