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Re: +3/5From: RModugno@aol.comFri Jun 26 17:02:40 1998
In a message dated 98-06-26 07:56:32 EDT, you write:
<< The +3/5 means that the head is 3 cm below the level of the spines. The
/5 means that I am really using cm. and that there are actually 5 cm
between the spine and the outlet. For years and actually still many
people in the US divide the distance into thirds and count + 3 as on the
perineum.
Dan
>> Dan, may I submit another meaning of +3/5? In my residency in South Africa, we talked about the number of "fifths" above the pelvic brim. Each 'fifth' being equal to about one fingersbreadth. This was popularized by Prof Philpott, the originator of the "Alert' and "Action" line on the partogram of labor. We did not use the level of the ischial spines as a denominator of station, as caput and molding influence that so much. Therefore, if the head was 2-3/5 above the brim, it was engaged. If the head was high or floating, it was 5/5, if it was deeply engaged, it was 0 to1/5.We used these denominators to determine the safety for operative vaginal delivery - either vacuum or forceps. Are any other non-US physicians aware of this concept of "fifths?" Robert Modugno MD Premier Medical OB/GYN Roswell, Ga
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