Purple line dilation accuracy. A: Pre-dilation FCx neurons (n=28 cells) exhibit firing increases immediately preceding onset of pupil dilation shown as dashed vertical line (0 sec). Purple line dilation accuracy

 
A: Pre-dilation FCx neurons (n=28 cells) exhibit firing increases immediately preceding onset of pupil dilation shown as dashed vertical line (0 sec)Purple line dilation accuracy  To be honest- even if the line correlates to labor and dilation, if you’re not having consistent contractions then it doesn’t really matter

Britney06. Oh the ways to waste my time. The meta-analysis found a moderate positive pooled correlation between the purple line length with cervical dilatation (r = +0. Before a woman begins to dilate and is about at term, you can get about 5 fingerbreadths of measurement between the fundus and the tip of the breastbone (xyphoid). Sign Out. (2)If one fingertip fits, the cervix is considered to be 1 cm dilated. There’s no one-size-fits-all approach to bringing a new baby into the world. Comparing diagnostic accuracy of purple line with transverse diagonal of michaelis sacral to predict labor progress in nulliparous and multiparous women. 21. 2. 5% to 91. nest. . It is very challenging to record the same neuron across session in chronic settings. Hobbs 1998. Generally, the convolutional or the dilated convolutional layers are used for brain tumor segmentation. I googled it and it said it’s actually a old wives tale to tell if your dilated, you measure the line. Kordi M et al. Basically, the theory is that starting at 3-4cm…The two red lines represent the upper and lower limits of the 95% agreement, the blue line represents the mean difference, and the purple line represents the position where the mean difference is 0 m 3. Has anyone heard of this? Since my dr won’t check me yet I’ve looked into it and I’m noticing I do have one and it’s progressing. Cervix Opening| Dilation |symptoms | Tell if cervix is dilated. Line 139-142: the authors argued here that the same LC unit was recorded across sessions. . This is a dark purple line. In an article that is freely available, they observed the progress of 144 women in labour and saw evidence of the purple line in 76% of the women. katcent. It’s a science backed study that showed a correlation between a red/purple line on the butt crack of the expectant mother and how dilated her cervix was. If your waters have broken, it is best not to self check dilation. When the line reaches the top of the natal cleft, 2nd stage is probably a matter of minutes away. Li et al. The most basic operations of morphology are dilation and erosion (Dilation and Erosion), which are often used for noise reduction, segmentation, maximum or minimum value regions, and image gradients. Before sharing sensitive information, make sure you’re on a federal government site. purple line dilation! myth or fact? okay I'm super curious. 0% negative predictive value in the first stage of labor, 87. As already mentioned, the two numbers, length of purple line and cervical dilation, are not perfectly correlated. U-Net is a simplified approach for automatic segmentation. 42 . mil. I am only 32+5 weeks and haven't been feeling any pains or even any notable BH contractions. 68). It is caused by an increase in the production of melanin, and is not related to the cervix or the dilation of the cervix. Top graph: traces show mean firing rate of Pre -dilation FCx neurons in relation to individual pupil dilation events within a single behavioral session (n=500-1000 dilation events per session). Image: Supplied/Tiny Hearts Education. Not really able to measure it well by myself tho (You can Google if you haven’t heard of it but apparently scientific studies show that a line will appear where. . The presence of purple line increased with an increase in cervical dilatation. This study aimed to compare diagnostic accuracy of purple line with transverse diagonal of Michaelis. Purple Line Dilation Chart. The purple line is non invasive methods to assess labour progress. During training, the network that yields the. (2021). These differences could be because they had a different sample size or methods. )(A) Pre-dilation FCx neurons (n = 28 cells) exhibit firing increases immediately preceding onset of pupil dilation shown as dashed vertical line (0 s). Jan 29, 2023 at 5:09 AM. If you feel any pain or extreme discomfort, remove your fingers. Mine is measuring at 7. In total, two studies evaluated the accuracy of the appearance of the purple line for assessing labor progress, and eleven studies evaluated the use of 2D and/or 3D transabdominal and/or transperineal ultrasound, which OSA, HPD, AOP, HD, and HSD (Fig. Rotation - The image is the preimage rotated around a fixed point; "a turn. 0% when cervical dilatation was 10 cm. Normally – you do have a bit of a line there. 2007 Jan;10(1):26-7. 05), a good fraction tended to alternate their choices (orange symbols; 7 significant. Considering the diagnostic accuracy of transverse diagonal of the Michaelis sacral and purple line, the transvers diagonal of. GameStop Moderna Pfizer Johnson & Johnson AstraZeneca Walgreens Best Buy Novavax SpaceX Tesla. 3% of the women during the active phase of labor. The purple line is said to start appearing when your cervix is between zero and two centimeters dilated. I’ve had some increased. Therefore, this study aimed to determine the. I also read it could just be from baby dropping and pressing causing the vein to turn reddish/purple. Online line it says I should be 10 cm dilated but definitely not I thought it was odd lol I don’t plan on getting a cervical check or anything so I thought I could look using this method obviously it doesn’t work for everyone I guess . Before sharing sensitive information, make sure you’re on a federal government site. While the majority of observers systematically repeated their choices (purple symbols; 12 significant at P<0. (This actually worked with both my previous pregnancies but could just be. purple line of dilation | 1. (1999) E. samgabrup21 22/10/22. It was accurate for me. This morning, though, almost had a heart attack when I booted up and saw a vibrant purple vertical line running up and down the left side of the display. Doulas use it as an alternative to internal cervical checks. Said I was 1cm and 50% effaced - will find out tomorrow. I just checked my behind and I have one but definitely purple and definitely used to not have. The Purple Line or Bottom Line. 7 percent, and this accuracy decreases as cervical dilatation increases. 3% specificity, 88. Types of transformations. This is my second baby and I have never heard of this but just today noticed that if i spread my cheeks lol. what is going on? okay so one article I read said that the purple line in your butt crack will get longer the closer you get to 10 cm. 4% with a cervical dilatation of 3 cm to. @mickchick, this makes a lot of sense because I noticed this a few days after feeling like baby was head down. A bottle of isopropyl rubbing alcohol (70%) Sterile gloves. 001). I was wondering if any moms have heard of purple line dilation?. There was a significant correlation. sharel. November 07, 2023 | by mwilliams21. Or rather – your butt crack. It occurs in about 75% of woman with a 50% accuracy. N. 3%) of cases. This however should not exclude women of non-white ethnic origin from the use of the purple line as an assessment tool since high rates of purple line occurrence have also been reported in studies with primarily non-white ethnicity women from Egypt and Iran of 82. Top graph: traces show mean firing rate of Pre -dilation FCx neurons in relation to individual pupil dilation events within a single behavioral session ( n = 500–1000 dilation events. By measuring the length of this purple line and comparing it with the total length of a woman’s natal cleft (or the entire length of the crease of her butt), a midwife can determine approximately how dilated a. Any experienced mama’s correlate this to going into labor early? I’m only 35+2 but I feel like she’s dropped and I know she’s already in position. 2% sensitivity😀. The presence of purple line increased with an increase in cervical dilatation. 2018. kjpp9. You and your midwife, doula, or other birthing-support team members can use the purple line dilation chart below to estimate how dilated you are. Advertisement. My purple line is 7cm long and I was just wondering how true this theory is?I’ve been having Braxton hicks and tightenings. Purple line dilation. Don’t ask me how I’ve noticed. Incontrast, there is a relation between vaginalIt is a common misconception that a cervical exam is a required routine procedure leading up to giving birth. 0001) and station of the fetal head (r = +0. I'm going into the doc tomorrow hoping to be induced in. 2014. The results of this study add to the growing body of research on progression of labour that the Purple line appeared in most of Iranian women during the active phase of labour and there was a positive correlation between length and width of the purple line and station of the foetal head. 3 3. This study of 144 women in labor found that 109 of the women had this purple butt line, and to some degree it did correlate to the percentage of cervical dilation. mlmc-22. Introduction:. As baby’s head descends, the intra-pelvic pressure increases and the purple line rises. 9 (brown line), and the FMM acceleration with γ = 0. Does anyone have experience or insight about the accuracy of the purple line for indicating cervix dilation?I’m 34w 5d and already have one. Suppose we need to graph f (x) = 2 (x-1) 2, we shift the vertex one unit to the right and stretch vertically by a factor of 2. Feb 26, 2022 at 4:13 PM. 3% specificity, 88. Basically, the theory is that starting at 3-4cm of dilation, a dark purple/red lines appears in your buttcrack. JMRH. 41-0. When couples in my classes are learning techniques for coping in labor, such as the Sacral Rub (sacrum counterpressure), Double Hip Squeeze and Bladder32 accupressure points, I always talk about the great position the partner is in for spotting the red, purple or dark line (depending on skin color) that creeps up between the laboring woman’s buttocks and. advertisementI’m 38 weeks tomorrow, and after a lovely relaxing bath I noticed I have the famous purple line up my butt crack which some midwifes use to see how much you’re dilated without a VA. Jun 7, 2015 at 5:11 AM. 5 days ago | jessmill231. the_robbins. I have a long purple line ranging from the hole up to the bumcrack. Assessing cervical dilatation without Vaginal. Other non-invasive means of assessing labour progression involve measuring the purple line, that visually appears in 48. TLDR. I didn’t have one when I was in the hospital a week and a half ago because I’ve been making my husband look for me I have a light pink line that’s the full 10 cm and then I have another line that’s darker on top of it if. JMRH Diagnostic Accuracy of Purple Line and Transverse Diagonal of Michaelis Sacral in predicting Labor Progress 8 J Midwifery Reprod Health. 5-7cm long meaning I’m about 2. came across this Purple Line thing that a lot of doulas and midwives have used. : Bethesda, Silver Spring, College Park, and New Carrollton. Measuring this line, called the purple line or the bottom line, is a non-invasive way for caregivers to assess cervical dilation. C. I know there's been a lot of discussion about this purple dilation line on here, so I'm curious if anybody has had the purple line, but did not go into labor any time remotely soon? They say it really is indicative of being dilated, but with all 4 of my prior pregnancies, I was not aware of "the line". 60 centimeters which says I could be anywhere from 4cm-7cm dilated. Springbabyduesoon. Truth or myth?! s. Sep 30, 2014 at 11:04 AM. As your baby’s birthday approaches and the big event of childbirth draws near, you can also tell if you are dilating by the purple line. the diagnostic accuracy of purple line in the prediction ofI looked and mine said I’m about at a 5 part of me hopes it’s accurate because I’ve been very crampy and contracting today. By Vieta April 11, 2023. . . 1%. Resources. Studies also show that vaginal exams are not really accurate. or maybe I'm just oblivious. 20+ Similar Discussions Found. Select BCA assays now include Dilution-Free BSA Protein Standards which are a set of 7 prediluted BSA standards,. . There was a statistically significant correlation between the measurements for dilation of the cervix and those for the line; in 22% the purple line was discolored and there was no association. 22. You could be dilated to a 3 or 4 or more. Large plastic trash bags. May 11, 2021 at 5:21 PM. Monitor: Dell U2713HM. This method can effectively improve data resolution and elevation accuracy when the gap between the resolutions of DEM datasets is not large (Yue et al. A. JMRH, 1 (2013), pp. Appearance of the purple line in the prediction of labor progress had 90. 19 Kordi M, Irani M, Tara F, Esmaily H. 87) and fetal head descent (r = +0. 2) The dilation line (sometimes called ‘the purple line’) – In some women and birthing people (not all), a purple, silver, brown or red line can be seen, starting from the anus and developing up between the buttocks. We were at 10 cm and it was go time!!! I'm actually really thankful that that the purple line showed up because I dilated from 6 to 10 cm really quickly -- well before we all expected. a. They conducted a small study with 48 women in spontaneous labour and noted that the purple line was seen on 89% of occasions, was completely absent in five women (10%), and initially absent in three (6%). Summary: The purple line dilation is a concept used in mathematics to visualize the stretching or shrinking of a shape along a specific line. Doulas use it as an alternative to internal cervical checks. 3 cm when the. Last night I had some back pain and…Purple line and dilation : this is one of the stranger things I’ve heard, but there seems to be science to back it up. Its interesting to say the least! (This is also. E. There were no significant difference between primigravida and multigravida in appearance of purple line (p<0. This line tends to approximately reflect cervix dilation, with about 1cm of line equalling about 1cm of dilation of the cervix. For women either in spontaneous or induced labour, the pooled mean length of the purple line was more than 9. I'm only 35 weeks and as of 2 days ago I was not dilated or effaced or dropped; nothing. These researchers hadn’t set out to find out more about the actual physiology of the purple line, but. How To Check Dilation. They also said it depends on skin colour, women with darker skin don’t show the line the same as pale skin does. So I’m not sure if anybody has ever heard of the “purple line of dilation” before. This appearance has been thought to occur because of the vascular congestion at the base of the sacrum. The signal induced by the BCA reagent is approximately 100 times more sensitive. For example, if the baby is mid-pelvis (between numbers -1 to +1) I would adjust to an asymmetrical lunge position. Display results as threadsAlright let me hear your stories! Any truth to the purple line on your bottom correlating to dilation? Do you have a purple line? Honestly I checked and I can’t tell! There’s no dark purple like it looks more like a raw line? But I don’t regularly check back there lol so I’m not sure if that’s always. Evidently there are scientific studies on it and it’s not just an old wives tale. Purple Line Theory: Transitioning From Pregnancy to Labor. 2. But I’m curious if anybody has ever heard of it and if it was actually accurate for them! Purple Line of Dilation. The current study aimed to assign. What this means is that, at a dilation of 1-2 cm, the length of the purple line of the women of the study, was not necessarily close to 5. I've even personally observed it when attending births as a doula! The “purple line” is said to start appearing when your cervix is between zero and two centimeters dilated. mlmc-22. Fan question I was wondering about the purple line dilation… if anyone knows if it’s accurate or a real way to tell how dilated I am. How accurate is the purple line dilation? Some studies have shown that the overall accuracy for cervical dilatation is between 48% to 56% with ± 1 cm error, to 89. This line can tell a midwife or professional, by the length of the line, how. Computational values as large as almost 90 × 10 − 6 K − 1 were reported for Mg 3 Sb 2 at 600 K [6]. You're considered 1 centimeter dilated if one fingertip fits through your cervix, or 2 centimeters if you can fit two fingers. 2014;16(11):e16183 sary and less invasive methods of assessing progress in. GPU: MSI N680 Power Edition. AboutTranscript. 1 km) light rail line intended to link the Maryland suburbs of Bethesda, Silver Spring, College Park, and New Carrollton, all in the Washington metropolitan area. May 14, 2023 at 12:44 PM. Keep in mind that the thin purple line is not a perfect measure of cervical dilation. 5% to 91. Oh the ways to waste my time. However, existing segmentation methods of the significant. Hey everyone so I'm pregnant with baby #1. So for example: at a dilation of 1-2 cm, the purple line was 5. The line starts at the anus and moves up the cleft. Sep 6, 2021 at 9:14 PM. 42, n = 56, P < 0. It allows us to understand how the shape transforms based on the dilation factor and direction. . One non-invasive means of estimating progress is to observe the ‘purple line’ that slowly ascends from the anal margin to the top of the natal cleft (skin between the buttocks). kjpp9. Have any of you moms found it to be true?Purple dilation line? k. Am J Obstet Gynecol. edu. Kordi M et al. Red line corresponds to stimulus onset; purple line corresponds to detection of motion event. Perfect for phone cases, , journals, guitars, refrigerators, windows, walls, skateboards, , computers, or whatever needs a dose of originality. 3% respectively [24], [25], which are comparable to the rates observed. Time Dilation: The most important piece of your combat arsenal (besides having properly upgraded weapons and armor), is the Time Dilation ability, represented by a purple bar beneath your health pool. Online line it says I should be 10 cm dilated but definitely not I thought it was odd lol I don’t plan on getting a cervical check or anything so I thought I could look using this method. 7% and this accuracy is reduced with the increase of cervical dilatation (5, 6). Some drs feel this way is more accurate than actual cervical checks. 4% of caesarean deliveries are complicated by postpartum infections [20]; the greater the. 60 centimeters which says I could be anywhere from 4cm-7cm dilated. 11 Comments. biomedcentral. When the line reaches the top of the natal cleft, 2nd stage is probably a matter of minutes away. One which is pretty accurate for late dilation is that thin line or "crease' above the symphysis. 3% of cases in active phase of labor. How Dilated am I? By Vieta April 11, 2023. I was was reading about purple line to self check for dilation. This study of 144 women in labor found that 109 of the women had this purple butt line, and to some degree it did correlate to the percentage of cervical dilation. Using a Purple Line Dilation Chart. Try to insert the tips of your fingers into your cervix If one fingertip fits through your cervix, you're considered one centimeter dilated If two fit,can we use the purple line as a sign of progression Labor or cervical dilation instead of doing digital cervical checks let's chat about it the purple line is a noninvasive method to assess the progression of Labor now this purple line is supposed to start around the anus and then progress up the cleft of the buttocks as the fetal head comes lower into the. after erosion, d. This has just been brought to my attention and its just the oddest thing. How accurate is the Purple Line dilation? Some studies have shown that the overall accuracy for cervical dilatation is between 48% to 56% with ± 1 cm error, to 89. 41-0. 2% sensitivity, 45. to 7 p. It is the first time that two-dimensional (2D) images are. statistical chart of image recognition accuracy of. In this study, the line itself was present at some point in labor for 76% of women. 2% sensitivity, 45. The Purple Line is a 16-mile light rail line that will extend from Bethesda in Montgomery County to New Carrollton in Prince George’s County. How to Check Your Cervix for Dilation (4 Easy Steps) How to Check Your Cervix for Dilation (4 Easy Steps). 6% sensitivity, 52. 2 Iran Red Crescent Med J. Iran Red Crescent Med J, 16 (11):e16183, 16 Nov 2014. All 9+ how to check for purple line dilation Latest Will you have a purple/brown/red line in your ‘butt cleavage’ during labor? By Nguyen Thanh Son March 29, 2023Anyone use this in labor to check for dilation instead of cervical checks? I had my third baby last month and decided to forgo cervical checks entirely since they were just an inconvenient disappointment whenever I was checked during the first 2 births haha. Background: Precise evaluation of labour progresses can help mothers to be consulted on time and decrease maternal and neonatal morbidities. October 26, 2023 In this blog post, Dr Sara Wickham gathers together evidence for the purple line in labour. Results: The purple line appeared in 75. Purple Line Dilation Chart. mil. while one says its like a dial and goes up the inside of your butt cheeks. Today my husband noticed a purple line in my butt crack. <p>I read that a purple line can appear between your butt checks and get longer, the further dilated you are. In Bryne and Edmonds the purple line appeared in 89 % of the women . A. Irani, M. mamaKkx. 4% with a cervical dilatation of 3 cm to 84. Mine is measuring at 7. The following data were extracted from each of the included studies: name of the first author, year of publication, country, study design, sample size, demographic data, obstetric data, purple line occurrence (%), numerical data of spontaneous versus induced labour, factors associated with the purple line, correlation coefficients with cervical. If labor stalls or baby moves up again, this circulatory congestion in the "crack" can lessen. In summary, the purple line in labor is a faint line that can appear on a pregnant woman’s abdomen during the later stages of pregnancy and during labor. If the tips of two fingers fit, this means the cervix is 2 cm dilated. I believe midwives use it to predict dilation. vn synthesize and compile, see more in the section How. Accuracy of purple line to monitor labour progress: Longitudinal study. Do you have other ways of identifying dilation that do not involve cervical exams?Purple Line of Dilation: So I’m not sure if anybody has ever heard of the “purple line of dilation” before. Alternative Methods of Checking Dilation {The Purple Line and More} by Birth Without Fear on June 6, 2013. Hobbs Line – Also known as the Red/Purple Line in Pregnancy Hobbs line, also known as the purple line and named after the researcher who wrote the first paper on this subject, has recently drawn more well-deserved. The traffic shift on Veterans Parkway (MD410) will continue through November. Angle your fingers back towards your anus to most effectively feel your cervix. compare diagnostic accuracy of purple line with transverse diagonal of Michaelis sacral rhomboid to predict labor progress in nulliparous and multiparous women who referred to Om-ol-banin Hospital, Mashhad, Iran from April to August 2012. 2014; The Diagnostic Accuracy of Purple Line in Prediction of Labor Progress in Omolbanin Hospital, Iran. 21. Sorry if TMI but the skin up my butt crack was itchy and I looked at it in the mirror and there is this long purple line. 7% and this accuracy is reduced with the increase of cervical dilatation (5, 6). ausetherbals. Temperature inside my case is pretty steady at 28. However, the standard deviation was 3. 15 Purple Line Dilation – What is the Purple Line in Labor? Purple Line Dilation “Club“ More parents are opting OUT of uncomfortable routine vaginal examinations in labor and prenatally (without a medical indication) and are opting. complementary measures of cervical dilation is neces-Kordi M et al. The experimental results show that our MLTCN can achieve an overall accuracy of 84. as shown by the purple line. 3% and 89. . View traffic shift here. Getting Pregnant . Does anyone have experience or insight about the accuracy of the purple line for indicating cervix dilation?I’m 34w 5d and already have one. Figure 3. The World Health Organization. Purple Line Dilation Chart – Farrag et al (2021) Would you prefer this way of assessing your labor progress (along with other signs such as more birth show, internal focus, increasing feeling of pressure and other visual (and audible) cues? Tracy. 2013; 1: 7-12. These differences could be because they had a different sample size or methods. This is a purple/dark line that shows up and extends well, to put it delicately, along your natal cleft. binary image, c. Log In / Sign UpGreen Line (Namma Metro) is the second line of Bangalore Metro and the only one other than the Purple Line to be operational in the city presently. Has anyone tried the purple line dilation? I’m curious as to how accurate it was if you did and then had a cervical exam shortly after. •. 8 years. 50; 95%CI: 0. so I don't think it's accurate. Depending on the distance the two fingers can stretch apart, it’s possible to indicate further dilation. When checking for exact dilation, studies show the accuracy to be around 48-56%. So I just read this thing about a purple line in your butt crack being an indicator of how dilated you are. The purplish line that appears in your butt crack that can indicate if you’re dilated at all and give an estimate of how dilated you are? I checked today (33+6) and I definitely have a purple line. , 2015a). We found a moderate positive pooled correlation between the purple line length with cervical dilatation (r = +0. ". 3% of people during the active phase of labor and appearance of the purple line in the prediction of labor progress had 90. It showed the purple line appeared in 75. . 87) and fetal head descent (r = +0. How accurate is the purple line dilation? Appearance of the purple line in the prediction of labor progress in the first stage of labor has 90. We proposed the system to measure objects in a real time pictures. 0% negative predictive value and in the second stage of labor it has 87. Measuring this line, called the purple line or the bottom line, is a non-invasive way for caregivers to assess cervical dilation. 9% of the studied It is a common misconception that a cervical exam is a required routine procedure leading up to giving birth. Sep 30, 2014 at 12:02 PM. However, from our personal experience, we very much. The purple line is non invasive methods to assess labour progress. I googled it and it said it’s actually a old wives tale to tell if your dilated, you measure the line. 1. I’ve read what I. While the purple line may not have a direct impact on the progress. 2% sensitivity, 45. Getting Pregnant . 0% negative predictive value and in the second stage of labor it has 87. I was googling last week, as I often do and came across this as a method of checking dilation? Apparently the line grows throughout labor and is used to determine how dilated you are. By measuring the length of this purple line and comparing it with the total length of a woman’s natal cleft (or the entire length of the crease of her butt), a midwife can determine approximately how dilated a. 4% with a cervical dilatation of 3 cm to 84. Please Note – This guide includes an extensive selection of purple line dilation pictures from real world birth journeys. We practice identifying these transformations in different pairs of figures. But how in the world does that work? Well, as the baby descends into the deep pelvis, the purple line rises up from the outskirts of the anus. I looked and mine said I’m about at a 5 part of me hopes it’s accurate because I’ve been very crampy and contracting today. Google says this has to do with how far dilated you are but I'm only 6 months along and have no signs of impending labour. 3 cm when the cervical dilatation was 3–4 cm. I’ve got a purple line now, not sure if it’s always slightly there, wish I’d have checked it while I wasn’t. Okay mamas, who knows about this? How accurate was it? I just learned about it and looked and I have a definite purple like at 34 weeks. 5% to 91. As baby’s head descends, the intra-pelvic pressure increases and the purple line rises. 4% specificity, 96. asking my Ob to check my cervix tomorrow at my appointment and will test this. What is the purple line in labor? Purple line is one of the non-invasive methods to assess the progress of cervical dilatation and foetal head descent in labour (Shepherd et al. To be honest- even if the line correlates to labor and dilation, if you’re not having consistent contractions then it doesn’t really matter. 0% when cervical dilatation was 10 cm. Experimental heat capacities of Mg 3 Sb 2 and Mg 3 Bi 2 from 2 to 220 K can be well described using Eq. m. 4% specificity. Large metal or plastic mixing bowl. Comparing diagnostic accuracy of purple line with transverse diagonal of michaelis sacral to predict labor progress in nulliparous and multiparous women. 7-12. By measuring the length of this purple line and comparing it with the total length of a woman’s natal cleft (or the entire length of the crease of her butt), a midwife can determine approximately how dilated a. samanthahicks88. Deleted User. after dilation, e.