OB Floor Flashcards
Def of postpartum hemorrhage (vaginal and section)
> 499 ml of blood loss at time of vaginal delivery or >999 ml at cesarean
Risk factors for PPH
Grand multiparity Multiple gestation Prolonged labor Prolonged oxytocin augmentation Chorioamnionitis Tocolytics
Most common cause of PPH
Uterine atony
Main medications for postpartum hemorrhage
Oxytocin Methylergonovine (Methergine) Hemabate Misoprostol (Cytotec) TXA
Oxytocin dosage for PPH
10-40 unites in 1,000 ml LR or NS IV infusion
10 units IM or into uterus through abdomen or cervix if IV line is unavailable
Side effects and contraindications of oxytocin when used of PPH
Water intoxication and hyponatremia
Hypotension if given in IV bolus
Dosing for Methergine in PPH
0.2 mg IM or 0.2 mg tablet PO x 1
Dosing for Hemabate in PPH
0.25 mg IM or intramyometrial injection every 15 minutes up to 8 doses
Usually stop after 3 injections
Dosing of Misoprostol in PPH
800-1000 ug per rectum
600 ug PO or sublingual
Side effects and contraindications of Methergine for PPH
Nausea, vomiting and chest pain
Contraindicated in HTN or vascular disease
Side effects and contraindications Hemabate in PPH
N/V, diarrhea, fever, bronchospasm and HTN
Contraindicated in ASTHMA, active heart, lung, renal or liver disease
Side effects and contraindications Misoprostol (Cytotec) in PPH
Diarrhea, shivering and fever that can be confused with endometritis
Uterine tamponade device name
Bakri Tamponade Balloon
When is Bakri Tamponade Balloon removed
Within 24 hours
How much fluid in filling Bakri Tamponade Balloon
500 ml of NS, may apply gentle traction to the balloon with a weight of <501 grams
Potential surgical procedures with laparotomy for uterine hemorrhage
Artery Ligation
Uterine Compression Suture
Hysterectomy
What artery ligations for PPH
Bilateral uterine artery ligation (O’Leary stitch) and bilateral utero-ovarian artery ligation
Internal iliac arteries- difficult and risky
Procedure for uterine compression suture
B-Lynch suture
Short term complication of B-Lynch suture used for PPH
Uterine necrosis
Pyometra
Myometrial defects
What is the B-Lynch suture
- First suture is like closing incision (in on one side out on other)
- Wrap suture around back side and drive needle on back side opposite of opening.
- Then throw suture back in of back and wrap suture over top coming from the other side
- Drive needle through other corner of incision line.
- Tie two together.
When to give packed RBC (PRBC) in postpartum hemorrhage
Based on clinical assessment:
- EBL >1,500
- HR >/= 110
- BP = 85/45
- O2 saturations <95%
Do not rely on H&H
Dosing for TXA (Tranexamic acid) in postpartum hemorrhage
1 g (10 mL of a 100 mg/mL solution) is infused over 10-20 minutes
If bleeding persists after 30 minutes, a second 1 g dose is administered
Difference in accelerations by gestational age
> /= 32 weeks: >/= 15 bpm above baseline, with a duration of >/=15 seconds
<32 weeks: >/=10 bpm above baseline, with duration >/= 10 seconds
Define variable decelerations
Drop >/=15 bpm, last >/= 15 sec and <2 minutes in duration
Numbers for moderate variability
6-25 bpm
Fentanyl dose for labor pain
50-100 ug IV q1h
Butorphanol (Stadol) dose for labor pain
1-2 mg IV or IM q4h
Morphine dose for labor pain
2-5 mg IV or 10 mg IM q4h
Nalbuphine (Nubain) dose for labor pain
10 mg IV q3h
Meperidine (Demerol) dose for labor pain
25-50 mg IV q1-2 hours
OR
50-100 mg IM q2-4
Timing before delivery for prophylactic antibiotics in Group B Strep mother
> /= 4 hours