discomforts, lifestyle & oral health 2009

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Discomforts, Lifestyle & Oral Health 2009

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Discomforts, Lifestyle & Oral Health 2009. Discomforts Nausea and vomiting Heartburn Lifestyle concerns with nutritional implications: alcohol caffeine smoking Illicit drugs Non-nutritive sweeteners physical activity oral health. - PowerPoint PPT Presentation

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Page 1: Discomforts, Lifestyle & Oral Health 2009

Discomforts, Lifestyle & Oral Health2009

Page 2: Discomforts, Lifestyle & Oral Health 2009

• Discomforts– Nausea and vomiting– Heartburn

• Lifestyle concerns with nutritional implications:– alcohol– caffeine– smoking– Illicit drugs– Non-nutritive sweeteners– physical activity

• oral health

Page 3: Discomforts, Lifestyle & Oral Health 2009

Nausea & Vomiting: Cochrane Library, 2003 (new review protocol established in 2009)

Quinlan et al, Am Fam Phys, 2003

Page 4: Discomforts, Lifestyle & Oral Health 2009

Background

• 70-85% of women experience nausea with pregnancy

• ~ ½ experience vomiting• 35% of women with employment lose

time from work due to nausea – an average of 62 hours

• Almost 50% of women report that their work efficiency is reduced by n&v

Page 5: Discomforts, Lifestyle & Oral Health 2009

Etiology

• Unknown• Nausea less common in those who

subsequently experience miscarriage• More common in twin pregnancies• Emerging findings: recent studies implicate

helicobacter pylori – H pylori infections more common in women with

n&v– Case reports that eradication of infection with

antibiotics ameliorates symptoms

Page 6: Discomforts, Lifestyle & Oral Health 2009

Hyperemesis Gravidarum

• Severe nausea and vomiting• Affects one in 200 pregnancies• Most common reason for hospitalization in early

pregnancy• Clinical features: Persistent vomiting, dehydration,

ketonuria, electrolyte disturbances, weight loss• 159 per million pregnant women died in England

between 1931-1940 (before IV fluid replacement therapy was available)

• (Charlotte Bronte died of hyperemesis in her fourth month of pregnancy)

Page 7: Discomforts, Lifestyle & Oral Health 2009

Cochrane Conclusions: 2003

• B6 “appears to be effective in reducing the severity of nausea.”

• Results of P6 acupressure trends are “equivocal.”

• “No trials of treatment for hyperemesis gravidarum show evidence of benefit.”

Page 8: Discomforts, Lifestyle & Oral Health 2009

Effectiveness and safety of ginger in the treatment of pregnancy-induced

nausea and vomiting (Borelli. Obstet Gynecol. 2005) • Six double-blind RCTs with a total of 675

participants and a prospective observational cohort study (n = 187) met all inclusion criteria

• Four of the 6 RCTs (n = 246) showed superiority of ginger over placebo; the other 2 RCTs (n = 429) indicated that ginger was as effective as the reference drug (vitamin B6) in relieving the severity of nausea and vomiting episodes.

Page 9: Discomforts, Lifestyle & Oral Health 2009

Borelli, cont.

• absence of significant side effects or adverse effects on pregnancy outcomes

• CONCLUSION: Ginger may be an effective treatment for nausea and vomiting in pregnancy. However, more observational studies, with a larger sample size, are needed to confirm the encouraging preliminary data on ginger safety.

Page 10: Discomforts, Lifestyle & Oral Health 2009

Nausea and vomiting of pregnancy: an evidence-based review (Davis, J Perinat Neonatal Nurs. 2004)

• n&v rates less in women taking perinatal multivitamin

• Mild to moderate n&v reduced by P6 acupuncture site pressure wristband (new battery operated electrical nerve stimulator)

• First step is dietary & lifestyle changes

Page 11: Discomforts, Lifestyle & Oral Health 2009
Page 12: Discomforts, Lifestyle & Oral Health 2009
Page 13: Discomforts, Lifestyle & Oral Health 2009

Davis, cont….

• If diet/lifestyle fail to bring relief drug therapy may be indicated.

• Most drugs will not be tested in pregnant women

• Pharmacologic treatments include:– B6 (pyradoxine)– B6 plus doxylamine (an antihistamine)=

Bendectin

Page 14: Discomforts, Lifestyle & Oral Health 2009

American Gastroenterological Association Institute Medial Position Statement on the Use

of Gastrointestinal Medication in Pregnancy (2006)

• Metoclopramide, prochlorperazine, promethazine, trimethobenzamide and ondansetron* are considered low-risk drugs based on studies in pregnant women and can be used for nausea and vomiting and for hyperemesis gravidarum. Granisetron and dolasetron have not been studied in human pregnancies.”

*Reglan, Compazine , Phenergan , Tebamide, Zofran

Page 15: Discomforts, Lifestyle & Oral Health 2009

Letter from Staroselsky et al., Gastroenterology, 2007: Re Bendectin

• AGA guideline missing doxylamine (with or without B6)

• Doxyamine-pyridozine (Bendectin) was approved by FDA for Tx of N&V in pregnancy, but “unfounded” lawsuits claiming risk of congenital malformations forced company to stop production in 1983.

Page 16: Discomforts, Lifestyle & Oral Health 2009

Starokelsky letter, cont.

• Meta-analysis of studies found no differences in birth defects with Bendectin.

• Doxalamin-pyridoxine available in Canada and use associated with lower hospitalization for HG.

• >30 million infants have been exposed without increased malformations.

• “Failure to acknowledge the safety and effectiveness of this drug is against the principals of evidence-based medicine.”

Page 17: Discomforts, Lifestyle & Oral Health 2009

Mahadevan reply, 2007

• “We limited our scope to agents used by physicians practicing in the United States who treat women during pregnancy.”

Page 18: Discomforts, Lifestyle & Oral Health 2009

•Lack of understanding and support from others• Inability to take vitamins or eat healthy• Taking medications perceived as risky• Missing out on the “fun” of being pregnant• Loss of a “normal” pregnancy• Lost work days or quitting work• Putting life “on hold”• Longing to eat and drink normally• Money expended on care and support• Lack of energy, fatigue• Irritability and lack of enjoyment of life• Memory loss or inability to think clearly• Burden of care and time on others• Lack of socialization, isolation

Stress Associated with N&V

cont…

Page 19: Discomforts, Lifestyle & Oral Health 2009

• Inability to prepare for birth and arrival of baby• Inability to care for family and home•Wanting pregnancy over or to end the misery• Others’ perception that hyperemesis is only in her mind• Reluctance of doctors to treat because of cost or liability• Weight loss or inadequate weight gain for gestational age of baby• Sense of inadequacy and failure at being unable to cope or function• Difficulty bonding with infant• Lack of energy and socialization with other children• Lack of excitement about infant’s arrival

Page 20: Discomforts, Lifestyle & Oral Health 2009

Interventions for Heartburn in PregnancyCochrane, 2008

• Up to 80% of women in third trimester• Not well understood – pregnancy hormones

influence• Lower esophageal sphincter• Gastric clearance

• 3 studies, 286 women• “little information to draw conclusions about

the overall effectiveness of interventions to relieve heartburn in pregnancy.”

Page 21: Discomforts, Lifestyle & Oral Health 2009

The management of heartburn in pregnancy (Richter, 2005. Alimentary

Pharmacology & Therapeutics)

• Staged approach:

• Lifestyle modification: Smaller meals, no late night eating, elevate head of bed, avoiding foods/mediations causing heartburn

• Discuss risk/benefits of drug TX (RCTs not done)

Page 22: Discomforts, Lifestyle & Oral Health 2009

The management of heartburn in pregnancy (Richter, 2005. Alimentary

Pharmacology & Therapeutics)

Page 23: Discomforts, Lifestyle & Oral Health 2009

Adverse effects of substance use determined by:

• Timing

• Dosage

• Duration

• Number of substances

• Environment (nutrition, health status)

• Individual susceptibility

Page 24: Discomforts, Lifestyle & Oral Health 2009

Effects of substance abuse include:

• Increased health problems, including risk of AIDS

• Compromised nutritional status/weight gain

• Higher rates of OB complications

• Psychosocial/economic/legal problems

• Parenting difficulties

• Higher rates of child abuse/neglect

Page 25: Discomforts, Lifestyle & Oral Health 2009

Alcohol: Background Per capita alcohol consumption has risen

through the second half of this century in the US

70% of individuals between the ages of 20 and 34 consume alcohol

Alcohol consumption peaks in the 20-40 year old group

Page 26: Discomforts, Lifestyle & Oral Health 2009

MMWRDecember 24, 2004 / 53(50);1178-

1181

BRFSS, 2002

Page 27: Discomforts, Lifestyle & Oral Health 2009

MMWRDecember 5, 2002

BRFSS

Page 28: Discomforts, Lifestyle & Oral Health 2009

Alcohol: Background, cont. Women are at disadvantage because less

gastric first pass metabolism due to lower levels of alcohol dehydrogenate in intestinal mucosa

Fetus has no alcohol dehydrogenase activity Alcohol crosses placenta easily by passive

diffusion – fetal levels mimic maternal levels The amniotic fluid acts as a reservoir for

alcohol.

Page 29: Discomforts, Lifestyle & Oral Health 2009

FAS Diagnostic Criteria- Fetal Alcohol Study Group of the Research Society on Alcoholism

• Prenatal and/or postnatal growth retardation (<10th % ca)

• Central nervous system involvement (neurologic abnormality, developmental delay or intellectual impairment)

• Characteristic facial dysmorphology with at least 2 of these 3 signs: Microcephally ( OFC < 3rd %ile) Micoopthalmia and/or short palpevral fissures Poorly developed philtrum, thin upper lip, and or

flattening of the maxillary area

Page 30: Discomforts, Lifestyle & Oral Health 2009

FAS, cont.

Other organ systems often involved. Some with nutritional implications:

Cleft palate Eustachian tube dysfunction Array of cardiac, renal, and skeletal defects that

may require surgical repair

Page 31: Discomforts, Lifestyle & Oral Health 2009

FAE – Fetal Alcohol Effects or PFAE

• Exhibit some components of FAE, but not all

• Most common sign is retarded growth both pre and postnatal

• Can have significant developmental and behavioral components

Page 32: Discomforts, Lifestyle & Oral Health 2009

Fetal Alcohol Spectrum Disorders (FASD)

• Surgeon General’s Advisory (2005)– “FASD is the full spectrum of birth defects caused

by prenatal alcohol exposure.”– “The spectrum may include mild and subtle

changes, such as a slight learning disability and/or physical abnormality, through full-blown Fetal Alcohol Syndrome, which can include severe learning disabilities, growth deficiencies, abnormal facial features, and central nervous system disorders.”

Page 33: Discomforts, Lifestyle & Oral Health 2009

FAS/FAE Incidence

FAS – 1.9 per 1000 births, 25 per 1000 among women who drink heavily

FAE – 3 to 5 per 1000 births, 90 per 1000 among women who drink heavily

FASD is leading cause of mental retardation in the western world

Page 34: Discomforts, Lifestyle & Oral Health 2009

Pathophysiology

• Combination of – Toxic effects of ethanol and it’s derivatives– Nutritional factors– Genetic predisposition

Page 35: Discomforts, Lifestyle & Oral Health 2009

Toxic effects• Both alcohol and derivative acetaldehyde directly

damage developing and mature nervous systems• Impair nucleic acid synthesis• Disrupts protein synthesis• Cell membrane narcosis• High maternal alcohol levels associated with

dehydration, fetal hypoxia and acidosis, placental pathology and dysfunction, and endocrine disturbances.

Page 36: Discomforts, Lifestyle & Oral Health 2009

Nutrition Related Effects of Alcohol

• Poor nutritional status of mother• Reduced placental transfer of zinc and folic

acid associated in animal models• Alcohol impairs absorption, utilization, and

metabolism of nutrients• Poor zinc status has been associated with

adverse effects of alcohol many studies

Page 37: Discomforts, Lifestyle & Oral Health 2009

Surgeon General’s Advisory (2005)

• Science: – Alcohol consumed during pregnancy increases the risk

of alcohol related birth defects, including growth deficiencies, facial abnormalities, central nervous system impairment, behavioral disorders, and impaired intellectual development.

– No amount of alcohol consumption can be considered safe during pregnancy.

– Alcohol can damage a fetus at any stage of pregnancy. Damage can occur in the earliest weeks of pregnancy, even before a woman knows that she is pregnant.

– The cognitive deficits and behavioral problems resulting from prenatal alcohol exposure are lifelong.

– Alcohol-related birth defects are completely preventable

Page 38: Discomforts, Lifestyle & Oral Health 2009

Surgeon General’s Advisory (2005)

Recommendations:1. A pregnant woman should not drink alcohol during

pregnancy. 2. A pregnant woman who has already consumed alcohol

during her pregnancy should stop in order to minimize further risk.

3. A woman who is considering becoming pregnant should abstain from alcohol.

4. Recognizing that nearly half of all births in the United States are unplanned, women of child-bearing age should consult their physician and take steps to reduce the possibility of prenatal alcohol exposure.

5. Health professionals should inquire routinely about alcohol consumption by women of childbearing age, inform them of the risks of alcohol consumption during pregnancy, and advise them not to drink alcoholic beverages during pregnancy.

Page 39: Discomforts, Lifestyle & Oral Health 2009

Caffeine• History:

– Rat based studies with high levels of caffeine found adverse pregnancy outcomes

– Early 1980s US FDA issued advisory about adverse effects of caffeine in pregnancy

– Further research found little association, FDA concludes that no strong evidence, urges moderation

– 1996 IOM review for WIC advised removing excessive caffeine intake from WIC risk criteria

– 1998 - USDA removed as WIC risk criteria

Page 40: Discomforts, Lifestyle & Oral Health 2009

The Effects of Caffeine on Pregnancy Outcome Variables (Hinds et al.

Nutrition Review, 1996)

• Consumption:– In US 70-95% of pregnant women

consume caffeine - average intake is 99-185 mg/day

– 5-30% of pregnant women consume >300 mg/day

– Heavy caffeine intake more likely in women who smoke and those with lower education levels

Page 41: Discomforts, Lifestyle & Oral Health 2009

The Effects of Caffeine on Pregnancy Outcome Variables (Hinds et al.

Nutrition Review, 1996)

• Metabolism– methylxantines cross the placenta to the

fetus where an equilibrium is achieved between maternal and fetal plasma

– half-life of caffeine in pregnancy changes from 5.2 to 18.1 hours in T2 and T3 and returns to non-pg levels a few weeks pp

Page 42: Discomforts, Lifestyle & Oral Health 2009

Caffeine Metabolism, Genetics and Perinatal Outcomes (Ann Epidemiol 2005)

• Wide individual variation in caffeine metabolism– Due to variation in CYP1A2 enzyme

activity• “Measuring maternal, fetal and neonatal

caffeine metabolites may allow for a more precise measure of fetal caffeine exposure.”

Page 43: Discomforts, Lifestyle & Oral Health 2009

Maternal exposure to caffeine and risk of congenital anomalies (Brown,

Epidemiology, 2006)

• Review of 7 (of 25 published) studies that met inclusion criteria

• Conclusion: “There is no evidence to support a teratogenic effect of caffeine in humans. Current epidemiologic evidence is not adequate to assess the possibility of a small change in risk of congenital anomalies resulting from maternal caffeine consumption.”

Page 44: Discomforts, Lifestyle & Oral Health 2009

Maternal Caffeine Consumption and Spontaneous Abortion: Review of

Epidemiologic Evidence (Epidemiology, 2004)

• Most studies find positive association between maternal caffeine intake and sp ab, but causality has not been established

• All studies have limitations: – selection and recall bias– poor exposure measurements– issues related to timing of exposure and fetal

demise• (Lively discussion in other venues: Are women who have

strong coffee aversion due to nausea early in pregnancy more likely to sustain pregnancy? Ann Epi, 2006)

Page 45: Discomforts, Lifestyle & Oral Health 2009

Coffee and Health: A Review of Recent Human Research (Higdon and Frei; Crit

Rev Food Sci and Nutrition, 2006)

Page 46: Discomforts, Lifestyle & Oral Health 2009

Conception

• Many studies find > 300 mg/d associated with delay in time to conception (some do not find this effect)

• Author’s conclusions: “it may be prudent for women who are having difficulty conceiving to limit caffeine consumption to less than 300 mg/d in addition to eliminating tobacco use and decreasing alcohol consumption.”

Page 47: Discomforts, Lifestyle & Oral Health 2009

Spontaneous Abortion

• Conflicting studies • Women who decrease Caffeine due to N&V,

more likely to have viable pregnancies.• “Most studies that observed significant

associations between self-reported coffee or caffeine consumption and the risk of spontaneous abortion did so at intake levels of at least 300 mg/d of caffeine.”

Page 48: Discomforts, Lifestyle & Oral Health 2009

Fetal Growth

• “Several studies found that maternal caffeine intakes ranging from 200-400 mg/d were associated with decreases in mean birth weight of about 100 g.”

• “A meta-analysis that combined the results of eight epidemiological studies found that maternal caffeine consumption greater than 150 mg/d increased the risk of low birth weight by approximately 50%.”

Page 49: Discomforts, Lifestyle & Oral Health 2009

Preterm Delivery

• “Most epidemiological studies have not found coffee or caffeine consumption to be associated with the risk of preterm delivery.”

Page 50: Discomforts, Lifestyle & Oral Health 2009

Birth Defects

• “At present, there is no convincing evidence from epidemiological studies that maternal caffeine consumption ranging from 300-1000 mg/d increases the risk of congenital malformations in humans.”

Page 51: Discomforts, Lifestyle & Oral Health 2009

Coffee and Health: A Review of Recent Human Research (Higdon and Frei; crit

rev food sci and nutrition, 2006)

• “Currently available evidence suggests that it may be prudent for pregnant women to limit coffee consumption to 3 cups/d providing no more than 300 mg/d of caffeine to exclude any increased probability of spontaneous abortion of impaired fetal growth.”

Page 52: Discomforts, Lifestyle & Oral Health 2009

Smoking

• 25-30% of US women smoke during pregnancy; down from 40% in 1967

• Cochran review found that 30 trials of intensive intervention programs in pregnant women lead to smoking cessation in 6.6-9.2% of women.

Page 53: Discomforts, Lifestyle & Oral Health 2009

Trends in Smoking Before, During, and

After Pregnancy, MMW; May 29, 2009

Page 54: Discomforts, Lifestyle & Oral Health 2009

Trends in Smoking Before, During, and

After Pregnancy, MMW; May 29, 2009

Page 55: Discomforts, Lifestyle & Oral Health 2009

Trends in Smoking Before, During, and

After Pregnancy, MMW; May 29, 2009

Page 56: Discomforts, Lifestyle & Oral Health 2009

Trends in Smoking Before, During, and

After Pregnancy, MMW; May 29, 2009

Page 57: Discomforts, Lifestyle & Oral Health 2009

Adverse Outcomes of Maternal Smoking

• Cigarette smoking is the single most important factor affecting birthweight in developed countries (DiFranza, Pediatrics, 2004)

– Twice the risk of LBW– Lower birthweight (~200g)

• Perinatal: Moderately increased risk of preterm delivery, perinatal mortality, spontaneous abortion

• Long term: modest reduction in long term growth and intellectual development of fetus.

Page 58: Discomforts, Lifestyle & Oral Health 2009

Nutritional Risks Associated with Smoking

• No breakfast (38% of smokers vs. 18% of non-smokers)

• Lower dietary intakes of fruits and vegetables, protein, zinc, riboflavin, thiamin, iron

Page 59: Discomforts, Lifestyle & Oral Health 2009

Nutritional Risks Associated with Smoking, cont.

• Smoking appears to:– decrease the availability of dietary energy– increase requirement for iron– reduce availability of B12, amino acids,

vitamin C, folate, and zinc

• Lower serum vitamin C, B6, E, folate, beta carotene

Page 60: Discomforts, Lifestyle & Oral Health 2009

Norkus et al. FASEB, 1989 and Ann NY Acad Sci 1987

Smokers Non-Smokers

Cord vit. C (mg/dl) 0.61 1.68

Placental vit. C(mg/dl)

10.1 20.9

Cord vit. E (mg/dl) 0.2 0.3

Maternal plasmacarotene (g dl

19 44

Cord carotene(g dl

7 20

Page 61: Discomforts, Lifestyle & Oral Health 2009

Vitamin C and PROM

• PROM occurs in 8-10 % of all pregnancies

• Vitamin C is required for collagen synthesis

• Maternal plasma and placental vitamin C is lower in women with PROM

Page 62: Discomforts, Lifestyle & Oral Health 2009

Nutritional Risks Associated with Smoking, cont.

• Increased carboxyhemoglobin in smokers blood leads to requires increased cutoff point for anemia in smokers.

• Women who smoke may have lower prepregnancy weights and may have lower pregnancy weight gains.

Page 63: Discomforts, Lifestyle & Oral Health 2009

Maternal smoking during pregnancy and child overweight: systematic review and

meta-analysis (Oken, 2008)

Page 64: Discomforts, Lifestyle & Oral Health 2009

Maternal smoking during pregnancy and child overweight: systematic review and

meta-analysis (Oken, 2008)• “The pooled estimate from unadjusted

odds ratios (OR 1.52, 95% CI: 1.36, 1.69) was similar to the adjusted estimate, suggesting that sociodemographic and behavioral differences between smokers and nonsmokers did not explain the observed association.”

Page 65: Discomforts, Lifestyle & Oral Health 2009

Maternal smoking during pregnancy and child overweight: systematic review and

meta-analysis (Oken, 2008)

• In parts of the world undergoing the epidemiologic transition, the continuing increase in smoking among young women could contribute to spiraling increases in rates of obesity-related health outcomes in the 21st century.

Page 66: Discomforts, Lifestyle & Oral Health 2009

Illicit Drugs: Nutritional Implications

• Estimates of 4-10% of US newborns exposed to one or more illicit drugs in utero

• Illicit drug use strongly associated with inadequate maternal weight gain, anemia, poor dietary habits

• Knight et al. (FASEB, 1992) found lower serum ferritin, folate, vitamin C and B12

levels in women when cord blood reflected illicit drugs

Page 67: Discomforts, Lifestyle & Oral Health 2009

Illicit Drug Use & Infant Outcomes: March of Dimes fact sheet

• In utero: Slowed fetal growth, reduced head circumference

• Perinatal: higher risk of CP, placental abruption

• Infancy: difficult to sooth and feed

Page 68: Discomforts, Lifestyle & Oral Health 2009

Illicit drug use and adverse birth outcomes: is it drugs or context?

(Schempf & Stobino, J Urban Health, 2008)• In unadjusted results, marijuana, cocaine, and

opiates were related to increased odds of LBW. • No drug was significantly related to LBW when

adjusted for Social, psychosocial, behavioral, and biomedical factors.

• About 70% of the unadjusted effect of cocaine use on continuous birth weight was explained by surrounding psychosocial and behavioral factors, particularly smoking and stress.

• Most of the unadjusted effects of opiate use were explained by smoking and lack of early prenatal care.

Page 69: Discomforts, Lifestyle & Oral Health 2009

Illicit Drugs: Nutritional Implications

• Cocaine:– associated with fewer meals, increased alcohol and

caffeine and fat intake– 32% also classified as eating disordered

• Methadone– Higher birthweights than women who continue to

use heroine– diarrhea, constipation, nausea, anorexia, and dry

mouth• Heroin

– altered glucose tolerance - delayed glucose response

Page 70: Discomforts, Lifestyle & Oral Health 2009

Position of the American Dietetic Association: Use of nutritive and nonnutritive sweeteners

(Affirmed 2000, in effect until 2009)

• Toxicity testing during reproduction is required for FDA approval.

• “The safety of acesulfame-K, aspartame, sucralose, and neotame in pregnancy has been determined with rat studies.”

• Saccharin can cross the placenta and may remain in fetal tissues because of slow fetal clearance - It has been suggested that women consider careful use of saccharin during pregnancy.

Page 71: Discomforts, Lifestyle & Oral Health 2009

Position of the American Dietetic Association: Use of nutritive and nonnutritive sweeteners

• Aspartame: issue relates to fetal exposure to aspartic acid, phe, or methanol. – Animal models show no changed fetal exposure to aspartic

acid with aspartame– Maternal bolus of aspartame at the 99th %ile of intake

results in peak plasma phe level in both normal (1.85 mg/dl) and PKU heterozygote subjects (2.67 mg/dl) below levels associated with neurological problems (18 mg/dl)

– Plasma response of methanol and formate are not significant after aspartame load

• “Use of aspartame within FDA guidelines appears safe for pregnant women.”

Page 72: Discomforts, Lifestyle & Oral Health 2009

Exercise

• Benefits:– improved or maintained fitness– reduces anxiety and depression– eases pregnancy discomforts such as

constipation, backache, fatigue and varicose veins

Page 73: Discomforts, Lifestyle & Oral Health 2009

Exercise

• Contraindications– previous experience of preterm labor– ob complications including vaginal

bleeding, incompetent cervix, ruptured membranes, compromised fetal growth

– Hx of medical problems (hypertension, heart disease, etc.) requires health care provider approval

Page 74: Discomforts, Lifestyle & Oral Health 2009

Exercise

• Changes with pregnancy– tolerance for strenuous exercise decreases

as pregnancy progresses• work of breathing increases as enlarging uterus

crowds the diaphragm• oxygen needs increase

– if lying flat on back after the 4th month, risk of compression of vena cava with dizziness and interference with blood flow to the uterus

Page 75: Discomforts, Lifestyle & Oral Health 2009

Exercise

Changes with pregnancy, cont.– may have increased efficiency of heat

dissipation– altered sense of balance with shift in center

of gravity– high hormonal levels associated with lax

connective tissue and increased joint susceptibility

Page 76: Discomforts, Lifestyle & Oral Health 2009

Cochrane: Aerobic Exercise for Women During Pregnancy (2006)• 11 trials involving 472 women• “The trials were not of high methodologic quality.”• Results:

– Regular aerobic exercise during pregnancy appears to improve (or maintain) maternal physical fitness

– Non significant, but concerning increased risk of preterm birth in exercise groups. From 7 trials: Pooled RR 1.82 (95% CI 0.35-9.57).

– Data insufficient to infer important risk or benefits for mother or infant

Page 77: Discomforts, Lifestyle & Oral Health 2009

Continuous, Strenuous, Vigorous Activity Throughout Pregnancy

(Gunderson, Clin Obstet gynecology, 2003)

• Can reduce birth weight & length of gestation

• Additional carbohydrate recommended before activity

• Increased need for B vitamins• Careful screening for nutritional &

herbal supplements• Athletes at higher risk for Fe depletion.

Page 78: Discomforts, Lifestyle & Oral Health 2009

Exercise during pregnancy and the postpartum period. ACOG Committee on Obstetric Practice.

January 2002

“The current Centers for Disease Control and Prevention and American College of Sports Medicine recommendation for exercise, aimed at improving the health and well-being of nonpregnant individuals, suggests that an accumulation of 30 minutes or more of moderate exercise a day should occur on most, if not all, days of the week. In the absence of either medical or obstetric complications, pregnant women also can adopt this recommendation.”

Page 79: Discomforts, Lifestyle & Oral Health 2009

Exercise during pregnancy and the postpartum period. ACOG Committee on Obstetric Practice.

January 2002

• Exercise may be beneficial in primary prevention of GDM

• Avoid– supine position (may result in obstruction

of venous return)– motionless standing– exertion above 6,000 feet altitude

Page 80: Discomforts, Lifestyle & Oral Health 2009

Avoid

• Sports with high potential for trauma: ice hockey, soccer, basketball

• Increased risk of falling: gymnastics, downhill skiing, vigorous racket sports, horseback riding

• Scuba diving (increased risk of decompression sickness)

Page 81: Discomforts, Lifestyle & Oral Health 2009

Postpartum

• Physiological changes persist 4 to 6 weeks postpartum

• Return to vigorous exercise should be gradual

• Return to physical activity may be protective against postpartum depression if exercise is stress relieving- not inducing

Page 82: Discomforts, Lifestyle & Oral Health 2009
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Page 85: Discomforts, Lifestyle & Oral Health 2009

Oral Health: Major Concepts (Academy of General Dentistry)

• Increased risk for gingivitis (red,swollen, tender gums that are more likely to bleed) associated with increased estrogen and progesterone

• Frequent consumption of high cho foods may be used to combat nausea

• Cariogenic bacteria may be passed from mother to infant

• Periodontal disease is associated with preterm birth

Page 86: Discomforts, Lifestyle & Oral Health 2009

Pregnancy Gingivitis

• 30-75% of women experience gingival changes such as edema, hyperplasia, redness, and bleeding

• Hormonal changes cause greater reaction to dental plaque

• Women who are plaque and inflammation-free at beginning of pregnancy have only 0.03 chance of gingivitis

Page 87: Discomforts, Lifestyle & Oral Health 2009

Periodontitis• Definition: an infection caused by specific

bacterial plaque that involves loss of bone, fiber, and gum tissue attachment for the tooth.

• Smoking associated with increased prevalence and severity of periodontitis

• Periodontal infections caused by gram-negative pathogens are associated with increase in preterm delivery and/or PROM - one mediating factor is prostaglandin production triggered by bacterial products.

• Women with diabetes are at higher risk

Page 88: Discomforts, Lifestyle & Oral Health 2009

Periodontitis (cont.)

• Pathogens and bacterial products may translocate and inhibit normal clearance of enteric organisms from genitourinary tract.

• Overgrowth of gram negative bacteria and infection can be associated with preterm birth.

Page 89: Discomforts, Lifestyle & Oral Health 2009

Can preterm birth be prevented by periodontal treatment?

• NIDCR funded two large RCT – women assigned to treatment or no treatment – Oral Therapy to Reduce Obstetric Risk

(OPT) – results published in 2006– Maternal Oral Therapy to Reduce Obstetric

Risk (MOTOR) – results due in 2008

Page 90: Discomforts, Lifestyle & Oral Health 2009

OPT: Treatment of Periodontal Disease and the Risk of Preterm Birth

(Michalowicz et al. NEJM, Nov. 2006)

• 823 women with periodontal disease, enrolled between 13-17 weeks gestation, randomized to:– Scaling and root planing before 21 weeks; monthly

polishings– Scaling and root planing after delivery

• Major Outcomes: – no difference in rates of preterm birth or low

birthweight– no adverse outcomes associated with treatment

Page 91: Discomforts, Lifestyle & Oral Health 2009

Periodontal Health and Birth Outcomes (Xu et al. Ob Gyn Survey, 2007)

• Evidence of an association between periodontal disease and increased risk of preterm birth and low birthweight, especially in economically disadvantaged populations, but potential biases and limited number of RCTs .

• “Currently, there is insufficient evidence to support the provision of treatment during pregnancy for the purpose of reducing adverse birth outcomes.”

Page 92: Discomforts, Lifestyle & Oral Health 2009

American Academy of Periodontology Statement Regarding Periodontal

Management of the Pregnant Patient (2004)

• Achieve a high level of oral hygiene prior to becoming pregnant and throughout pregnancy

• Periodonal treatment (eg; scaling and root planing) is usually scheduled in second trimester

• Emergencies such as acute infection and abcess may require immediate treatment regardless of stage of pregnancy)

• Consultation with prenatal care provider

Page 93: Discomforts, Lifestyle & Oral Health 2009

Oral Health: Recommendations

• Frequent dental cleanings (3 to 6 months)• Daily oral care routines including brushing

and flossing at least twice daily and after eating

• Use of toothpastes and rinses with fluoride• Consider cariogensis in food choices and

patterns.• Offer smoking cessation programs