Bonus Material-08_2025PBRPregnancyandWomensHealthLevine

Pdf Summary

This comprehensive lecture by Dr. Stephanie M. Levine reviews pulmonary and cardiovascular physiology changes during pregnancy and focuses on managing common and critical respiratory conditions in pregnant women.<br /><br />Normal pregnancy induces physiological changes including increased minute ventilation (30-50% rise), tidal volume increases, stable respiratory rates, mild respiratory alkalosis (PaCO2 ~28-32 mmHg), and cardiovascular adaptations with increased cardiac output and decreased systemic vascular resistance. Airway mucosa undergoes estrogen-mediated hyperemia and edema, complicating intubation.<br /><br />Asthma affects 2-13% of pregnant women and increases risks of preterm labor, pre-eclampsia, and fetal growth restriction. Treatment prioritizes maintenance therapy — inhaled corticosteroids (budesonide preferred, Category B), beta-agonists, and continuation of biologics like omalizumab if already started. Guidelines discourage stepping down therapy during pregnancy due to potential exacerbations.<br /><br />Venous thromboembolism (VTE) occurs more commonly postpartum and predominantly affects the left leg. Diagnosis uses Doppler ultrasound (left lateral decubitus position), with pregnancy-adapted algorithms incorporating D-dimer to limit radiation exposure. Low-molecular-weight heparin (LMWH) is first-line treatment, continued throughout pregnancy and for 6 weeks postpartum; warfarin and NOACs are avoided during pregnancy.<br /><br />Tuberculosis treatment in pregnancy excludes pyrazinamide due to unknown fetal effects; standard therapy uses isoniazid, rifampin, and ethambutol. Latent TB treatment is carefully selected based on risk.<br /><br />Critical care complications unique to pregnancy include amniotic fluid embolism, tocolytic-induced pulmonary edema, pulmonary hypertension (high maternal-fetal mortality), and peripartum cardiomyopathy. Mechanical ventilation requires attention to altered compliance and intubation challenges.<br /><br />Lymphangioleiomyomatosis (LAM) is a rare cystic lung disease affecting reproductive-age women, with estrogen playing a role. Diagnosis involves HRCT and VEGF-D levels; treatment includes sirolimus to stabilize lung function, avoiding pregnancy, and managing complications like pneumothorax.<br /><br />In summary, the lecture underlines understanding physiological adaptations to tailor management of pulmonary diseases in pregnancy, optimizing maternal and fetal outcomes.

Meta Tag

Concept Pregnancy

Concept Respiratory Physiology

Concept Asthma

Concept Venous Thromboembolism

Concept Lymphangioleiomyomatosis

Keywords

pregnancy physiology

pulmonary changes

cardiovascular adaptations

asthma management

venous thromboembolism

low-molecular-weight heparin

tuberculosis treatment

pulmonary hypertension

PH

peripartum cardiomyopathy

lymphangioleiomyomatosis