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Unit 8 - HTN and Preterm Labor
Test 2
67
Nursing
Undergraduate 3
07/18/2014

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Term
What is the benefit of prevention of neural tube defects?
Definition
50-70% can be prevented if a woman has adequate levels of folic acid during earliest weeks of organogenesis—before she receives her prenatal vitamins
Term
What is the benefit of prevention of Birth Defects related to poor glycemic control of mother (including sacral agenesis, cardiac defects and neural tube defects)
?
Definition
Can be reduced from ~10% to 2-3% through glycemic control of the woman before organogenesis
Term
What is the benefit of preventing a prospective mother’s contact with teratogenic exposures such as prescribed medications, environmental exposures and alcohol
?
Definition
Teratogenic substances interfere with normal organ development primarily during the period of organogenesis
Term
What are the CDC guidelines for immunizations/medications in pregnancy?
Definition
Recommended/should be considered: Hep B, Influenza (inactivated) Tetanus/Diptheria (Tdap), Meningococcal, Rabies
Term
What are the contraindicated vaccines?
Definition
Influenza (live, attenuated vaccine) nasal spray, Measles, Mumps, Rubella, Varicella, BCG (tuberculosis), Meningococcal, Typhoid
Term
What are the drugs that can be used in pregnancy?
Definition
Meds for seizures, high blood pressure, asthma, depression if the benefits outweigh the risks
Term
Why should you not use herbal supplements while pregnancy?
Definition
some contain chemicals that cross the placenta, may cause harm to fetus
Not evaluated in controlled studies
inconsistent potency in active ingredients
Term
Why are over the counter medications as dangerous as prescribed?
Definition
may be as potent as prescribed meds
Term
What is category A?
Definition
Adequate and well-controlled studies have failed to demonstrate a risk to the fetus in the first trimester of pregnancy (and there is no evidence of risk in later trimesters).
Ex: folic acid, vitamin B6, thyroid medicine
Term
What is category B?
Definition
Animal reproduction studies have failed to demonstrate a risk to the fetus and there are no adequate and well-controlled studies in pregnant women.
Antibiotics, Tylenol, artificial sweatner, Pepcid, Prednisone, Insulin, Ibuprofen
Term
What is category C?
Definition
Animal reproduction studies have shown an adverse effect on the fetus and there are no adequate and well-controlled studies in humans, but potential benefits may warrant use of the drug in pregnant women despite potential risks.
Compazine, Diflucan, Cipro, some antidepressants
Term
What is category D?
Definition
There is positive evidence of human fetal risk based on adverse reaction data from investigational or marketing experience or studies in humans, but potential benefits may warrant use of the drug in pregnant women despite potential risks.
Alcohol, Lithium, Dilantin, Chemo therapy
Term
What is Category X?
Definition
Studies in animals or humans have demonstrated fetal abnormalities and/or there is positive evidence of human fetal risk based on adverse reaction data from investigational or marketing experience, and the risks involved in use of the drug in pregnant women clearly outweigh potential benefits.
Accutane, Coumadin, antithyroid medications for over-active thyroid, radiation therapy, ect.
Term
What are the HTN diseases associated w/ pregnancy?
Definition
Chronic Hypertension
Gestational Hypertension
Preeclampsia
Eclampsia
HEELP Syndrome
Term
When is Chronic Hypertension diagnosed?
Definition
Diagnosed before the 20th week or present before the pregnancy
Term
What is mild htn?
Definition
> 140-180 mmHg systolic
> 90-100 mmHg diastolic
Term
When is gestational htn diagnosed?
Definition
Develops after 20 weeks of gestation
Term
Is protein urea associated w/ g. HTN?
Definition
no
Term
When does BP go back to normal w/ gestational HTN?
Definition
After birth
Term
In Gest. HTN, Morbidity is directly related to>
Definition
The degree of HTN
Term
What is the criteria for diagnosis of preeclampsia?
Definition
Develops after 20 weeks
Blood pressure elevated on two occasions at least 6 hours apart
Associated with proteinuria and edema
May occur less than 20 weeks with gestational trophoblastic neoplasia
Term
What is normal preeclampsia?
Definition
Previously normotensive woman
> 140 mmHg systolic
> 90 mmHg diastolic
Proteinuria > 300 mg in 24 hour collection
Nondependent edema
Term
What is severe preeclampsia?
Definition
BP > 160 systolic or >110 diastolic
> 5 gr of protein in 24 hour urine or > 3+ on 2 dipstick urines greater than 4 hours apart
Oliguria < 500 mL in 24 hours
Cerebral or visual distrubances (headache, scotomata)
Pulmonary edema or cyanosis
Epigastric or RUQ pain
Evidence of hepatic dysfunction
Thrombocytopenia
Intrauterine growth restriciton (IUGR)
Term
What is eclampsia?
Definition
Diagnosis of preeclampsia
Presence of convulsions not explained by a neurologic disorder
Grand mal seizure activity
Occurs in 0.5 to 4% or patients with preeclampsia
Term
What is HEELP syndrome?
Definition
A distinct clinical entity with:
Hemolysis, Elevated Liver enzymes, Low Platelets
Occurs in 4 to 12 % of patients with severe preeclampsia
Microangiopathic hemolysis
Thrombocytopenia
Hepatocellular dysfunction
Term
What is the action of mag sulfate?
Definition
blockage of neuromuscular transmission, vasodilation
Term
Why is mag sulfate used?
Definition
Prevention and treatment of eclamptic seizure
Term
What are the nursing implications r/t mag suflate/
Definition
Loading dose—4-6 gm IV, maintainence dose 2gm (Serum levels: 6-8 mg/dL)
Monitor serum Mag levels
Assess DTRs/ankle clonus
Have CALCIUM GLUCONATE readily available in case of toxicity
Flushing, sweating, hypotension, cardiac depression, CNM depression
Term
What are the s/s of mag toxicity?
Definition
Respiratory rate < 12
DTR’s not detectable
Altered sensorium
Urine output < 25-30 cc/hour
Antidote: 10 ml of 10% solution of calcium gluconate 1 iv over 3 minutes
Term
What is the action of apresoline?
Definition
: vascular smooth muscle relaxant (improves perfusion to renal, uterine, and cerebral areas)
Term
Why is apresoline used?
Definition
Reduction in blood pressure
Term
What are the nursing implications r/t apresoline/
Definition
5-10 mg by slow IV push q 20 mins PRN
Use immediately after opening
Withdraw drug slowly to prevent possible rebound hypertension
Term
What are the adverse effects of apresoline?
Definition
Palpitations, headache, anorexia, nausea, vomiting, diarrhea
Term
What is the action of Labetalol (Normodyne)?
Definition
Alpha-1 and beta blocker
Term
What is Labetalol (Normodyne) used for
Definition
Reduction of blood pressure
Term
What are the nursing implications r/t Labetalol (Normodyne)?
Definition
Lowers BP, does not decrease maternal heart rate or cardiac output
Administer IV 20-40 mg q 15 mins as needed, then 2 gm/min infusion as needed for desired BP
Term
What are the adverse effects of Labetalol?
Definition
Gastric pain, flatulence, constipation, dizziness, vertigo, fatigue
Term
What is the action of Nifedipine (Procardia)?
Definition
Calcium channel blocker/dilation of coronary arteries, arterioles, and peripheral arterioles
Term
What is Nifedipine (Procardia) used for?
Definition
reduction of blood pressure, stopping of preterm labor
Term
What are the nursing implications r/t Nifedipine (Procardia)?
Definition
Administer 10-20 mg PO q 4-6 hrs
Adverse effects: dizziness, peripheral edema, angina, diarrhea, nasal congestion, cough
Term
What is the action of Sodium Nitroprusside?
Definition
rapid vasodilation (arterial and venous)
Term
What is Sodium Nitroprusside used for?
Definition
severe hypertension requiring rapid reduction in blood pressure
Term
What are the nursing implications r/t sodium nutroprusside?
Definition
Administer via continuous IV infusion with dose titrated according to blood pressure levels
Protect IV infusion from light (wrap with foil)
Term
What are the adverse effects of Sodium Nitroprusside?
Definition
Apprehension, restlessness, retrosternal pressure, palpitations, diaphoresis, abdominal pain
Term
What is the action of Furosemide (Lasix)?
Definition
diuretic action, inhibiting the reabsorbtion of sodium and chloride from the ascending loop of Henle
Term
What is the use of Furosemide?
Definition
Pulmonary edema (used only if condition is present)
Term
What are the nursing implications of furosemide?
Definition
Administer via slow IV bolus at a dose of 10-40 mg over 1-2 min; monitor urine output
Term
What are the adverse effects of furosemide?
Definition
dizziness, vertigo, orthostatic hypotension, anorexia, vomiting, electrolyte imbalances, muscle cramps, muscle spasms
Term
What are preterm labor meds?
Definition
: regular uterine contractions accompanied by cervical effacement and dilation before the end of the 37th week of gestation
Term
What is the most common obstetric complication?
Definition
Preterm birth
Increased 35% in last 20 years
Account for 75% of neurodevelopmental disorders , 85% of all perinatal morbidity and mortality.
Term
What is used to halt per term labor?
Definition
-Tocolytics
Term
Is mag sulfate used to halt labor?
Definition
Yes
relaxes uterine muscles o stop irritability and contractions, to arrest contractions (off-label)
Term
Who uses mag sulfate?
Definition
used in seizure prophylaxis and treatment of seizures in preeclamptic and eclamptic clients
Term
What are the nursing implications r/t mag sulfate?
Definition
IV loading dose 4-6gm over 15-30 mins, then 1-4 gms/hr
VS and DTR hourly, level of consciousness, headache, blurred vision, dizziness
Continuous EFM-report decreased variability, hypotonia, respiratory depression
I&O, report decrease (<30ml/hr), decrease in respiratory rate, lung sounds for evidence of pulmonary edema
Term
What are common s/e of mag sulfate?
Definition
flushing, nausea, vomiting, dr mouth, lethargy, blurred vision, headache, transient hypotension, lethargy
Term
S/s of mag toxicity?
Definition
decreased level of consciousness, depressed respirations and DTRs, slurred speech, weakness, and respiratory and cardiac arrest
Term
What is the action of Indomethacin (Indocin)?
Definition
Inhibits prostaglandins, which stimulate contractions; inhibits uterine activity to arrest preterm labor
Term
What are the nursing implications r/t Indomethacin (Indocin)?
Definition
monitor VS, administer PO, do not give if peptic ulcer, ***amniotic fluid volume and function of ductus arteriosus, monitor signs of maternal hemorrhage
Term
What are the adverse effects of Indomethacin (Indocin)?
Definition
nausea and vomiting, heartburn, rash, prolonged bleeding time, oligohydramnios, hypertension
Term
What are the FETAL effects of Indomethacin (Indocin)?
Definition
constriction of ductus arteriosus, premature ductus closure, necrotizing enterocolitis, oligohdramnios, and pulmonary hypertension
Term
Who is Indomethacin (Indocin) contraindicated in?
Definition
32 wks gest., IUGR, hx of asthma, urticaria, allergy to aspirin or NSAIDS.
Term
What is the action of Nifedipine (Procardia)?
Definition
blocks calcium movement into muscle cells, inhibits uterine activity to arrest preterm labor
Term
What are the nursing implications of Nifedipine (Procardia)?
Definition
may cause hypotension when giving with Mag Sulfate, monitor BP hourly (with MGSO4), report pulse >100bpm,
Monitor for fetal effects such as decreased uteroplacental blood flowbradycardiafetal hypoxia
Term
What are the adverse effects of Procardia?
Definition
: flushing of skin, headache, transient tachycardia, palpitations, postural hypotension, peripheral edema, transient fetal tachycardia
Term
Who is Procardia contraindicated in?
Definition
women with cardiovascular disease or hemodynamic instability.
Term
What is the action of Betamethasone (Celestone)?
Definition
promotes fetal lung maturity—stimulates surfactant production; prevents or reduces of respiratory distress syndrome and intraventricular hemorrhage in the preterm neonate less than 34 wks gestation
Term
What are the nursing implications of Betamethasone (Celestone)?
Definition
administer 2 doses 24 hrs apart
Monitor for maternal infection or pulmonary edema
Discuss potential benefits to preterm infants
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