By Luis A. Cibils MD, Mary Campau Ryerson (auth.)

It turns out basically the previous day that the fetus in utero effectively parameters of uterine job, and so they and the uterine setting have been virtually whole­ taught a scientific method of the clinician's knowing of uterine body structure. Their paintings ly shrouded in secret. The gender of the kid used to be unfold tremendous quickly' past the limits largely a question of sheer hypothesis. Its measurement in their local Uruguay. The final 30 years have was once expected through stomach palpation with notori­ noticeable a quantum bounce in our knowing of fetal ous loss of accuracy. the expansion development of the and uterine body structure. the vast majority of the outdated ques­ fetus was once no longer a topic for critical learn inasmuch tions-diagnostic, healing, and prognostic­ as antenatal care and observations weren't being systematically made. a query of even if the were at the least partially responded. The physique of fetus had a critical malformation used to be handled as a brand new wisdom is now housed mostly in the subject of worry instead of an issue to be heavily subspecialty of Maternal and Fetal medication. evaluated. The situation of the fetus in utero at a the writer of this ebook arrived at the scene given time and the query of no matter if the fetus simply after the severe mid-century turning element. might tolerate hard work had now not heavily been He used to be lucky to come back below the impact of Professor Raoul Palmer in France, to paintings in introduced forward.

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I ~ "0 ~ FETASONDE'M I i, .... '"~ , 1\ iii I "0 ~ t. A. ~-. ,________________~5~_~4~_~7~1~_ + , - - - - - •. 0, .. '" PREGNANCY FETAL HEART RATE, TISSUE pH, m 1 tual pressures (generally calibrated in mm Hg). The fluctuations observed in the intensity of contractions are real variations that occur in normal labors. When care is taken to level the transducer with the upper level of the uterine hydrostatic system, an accurate tracing of variations in uterine tonus or resting pressure as part of the intrauterine pressure tracing is recorded (see Figure 4-4).

6 15 4 ........ ... ....... 5 10 o0 15 y s of 20 25 32 eye I e Figure 2-6 (Scale, right) Sodium, potassium, and chloride ions. (Scale, upper left) Sum of Na+ + K+ concentrations in human myometrium throughout the ovarian cycle. Cases are grouped according to stage of cycle starting by early proliferative (PI). (Scales, left) These fmdings are plotted concurrently with normal urinary estrogens and progesterone metabolite excretion curves (after Loraine and Bell, 1963).

The receptor crystal is located next to the emitter. OlcilloJeop. Photogroph of Doppler ond ECG ftorn t". htol Heort Figure 3-6 Simultaneous recording of (above) Doppler ultrasound waves and (be/ow) fetal electrocardiogram. In spite of processing, the ultrasound tracing produces a series of signals that may interfere with good recording and thus give false baseline oscillations. Reprinted from Lauersen NH, et al: Evaluation of the accuracy of a new ultrasonic fetal heart rate monitor. Am J Obstet Gyneco/123:1l25, 1976.

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