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Questions and Answers
What does the FHt measurement in Haase’s formula represent?
What does the FHt measurement in Haase’s formula represent?
- Total gestation weight in kilograms
- Fetal age in weeks
- Fetal head to heel length in centimeters (correct)
- Fetal height in grams
In estimating the age of gestation using the formula provided, what is the formula for age in months?
In estimating the age of gestation using the formula provided, what is the formula for age in months?
- Months² (correct)
- FHt in cm x 8/7
- Months/7
- FHt in cm x 2/7
If a mother visits on August 15 and her last menstrual period (LMP) was April 27, how many days has she been pregnant?
If a mother visits on August 15 and her last menstrual period (LMP) was April 27, how many days has she been pregnant?
- 75 days
- 112 days (correct)
- 90 days
- 85 days
Which method is recommended for estimating fetal weight accurately?
Which method is recommended for estimating fetal weight accurately?
How do you convert the estimated age of gestation from months to weeks?
How do you convert the estimated age of gestation from months to weeks?
If Naegele's Rule is used, what is the primary goal of the calculation?
If Naegele's Rule is used, what is the primary goal of the calculation?
What total does 6 months squared equal, as per the estimation for age of gestation?
What total does 6 months squared equal, as per the estimation for age of gestation?
What is the outcome of using Johnson's Rule for calculating fetal age from the LMP given the days completed?
What is the outcome of using Johnson's Rule for calculating fetal age from the LMP given the days completed?
What is the purpose of adding 9 months and 7 days to the first day of a woman's last menstrual period (LMP)?
What is the purpose of adding 9 months and 7 days to the first day of a woman's last menstrual period (LMP)?
If a woman's LMP was on January 22, 2020, what is her expected date of delivery (EDD)?
If a woman's LMP was on January 22, 2020, what is her expected date of delivery (EDD)?
Which of the following factors can be confirmed using an ultrasound during pregnancy?
Which of the following factors can be confirmed using an ultrasound during pregnancy?
What is a normal fetal movement rate during the third trimester?
What is a normal fetal movement rate during the third trimester?
What determines fetal maturity during pregnancy?
What determines fetal maturity during pregnancy?
What additional factor should be considered when calculating the due date from LMP?
What additional factor should be considered when calculating the due date from LMP?
What is the typical increase in blood volume during pregnancy known as?
What is the typical increase in blood volume during pregnancy known as?
What does the sphingomyelin/lecithin ratio in amniotic fluid indicate?
What does the sphingomyelin/lecithin ratio in amniotic fluid indicate?
What is the first step in calculating the Estimated Date of Delivery (EDD) using Naegele’s Rule?
What is the first step in calculating the Estimated Date of Delivery (EDD) using Naegele’s Rule?
Using Naegele's Rule, if a woman's LMP is June 10, 2020, what is her Estimated Due Date (EDD)?
Using Naegele's Rule, if a woman's LMP is June 10, 2020, what is her Estimated Due Date (EDD)?
If a woman's LMP is in the month of January, which formula should be used for calculating the EDD?
If a woman's LMP is in the month of January, which formula should be used for calculating the EDD?
After applying Naegele's Rule, what is added to the day to finalize the EDD?
After applying Naegele's Rule, what is added to the day to finalize the EDD?
If a woman's LMP is September 5, 2020, what would be the correct calculation for her EDD?
If a woman's LMP is September 5, 2020, what would be the correct calculation for her EDD?
What does a fundal height measurement of cm minus 12 signify in the EDD calculation formula?
What does a fundal height measurement of cm minus 12 signify in the EDD calculation formula?
In which months should the alternate formula for EDD calculation from January to March be applied?
In which months should the alternate formula for EDD calculation from January to March be applied?
What is the significance of the terms 'primigravida' in relation to Naegele's Rule?
What is the significance of the terms 'primigravida' in relation to Naegele's Rule?
Study Notes
Estimating Weight and Gestational Age
- Estimating fetal weight can be calculated using fundal height measurements in centimeters, adjusted with a formula:
est. weight (grams) = (fundal height in cm - 12) × 155. - Determine Estimated Due Date (EDD) using Naegele’s Rule:
EDD = (LMP - 3 months) + 7 days + 1 year.
Calculation Example
- For a LMP of June 10, 2020:
- Adjust month: June 10 becomes March 10.
- Add 7 days: March 10 + 7 = March 17.
- Add 1 year: 2020 + 1 = 2021.
- Resulting EDD: March 17, 2021.
Quickening and Fetal Movements
- Fetal movements can be measured in kick counts per hour; a typical range is 5-10 times/hour, indicating fetal health.
- “Quickening” refers to the first noticeable fetal movements and is a significant milestone in pregnancy.
Additional Formulas and Measurements
- Haase’s Rule estimates fetal length using fundal height (FHr) as:
FHr in cm × (8/7). - Age of Gestation (AOG) in weeks can also be derived from conditions such as:
AOG in weeks = fundal height in cmAOG in months = (FHr in cm × 2) / 7.
Clinical Visit Calculation
- If a pregnant woman has a LMP of August 27 and visits on August 15, calculate gestational age:
- 5 months squared results in an approximate fundal height measurement of 25 cm.
LMP Calculation Examples
- For a LMP on April 27 with a visit on August 15, the weight can be calculated using:
N + (number of months passed till visit) = X/7.
Ultrasound and Pregnancy Monitoring
- Ultrasound is crucial for diagnosing pregnancy, identifying fetal position, and detecting abnormalities in fetal growth or development.
- Sphingomyelin and Lecithin ratios are indicators of amniotic fluid adequacy and fetal maturity.
Common Pregnancy Metrics
- A normal peak fetal heart rate ranges from 120 to 160 beats per minute.
- Blood volume alterations during pregnancy lead to hemodilution and physiological anemia, which are typically expected changes.
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Description
This quiz covers the calculations and evaluations related to fetal growth measurements, specifically focusing on understanding station fundal height in centimeters over different trimesters. It is designed to help students familiarize themselves with key concepts related to fetal development over a 110-day period.
