Incidence of VTE in pregnancy and postpartum is 1.72 per 1000
Risk significantly elevated in the 6 weeks postpartum
Risk of DVT equal in 1st and 2nd trimesters, higher risk in 3rd trimester and 3 weeks postpartum 
PE most commonly occurs in postpartum. 
Common risk factors include:
Advanced maternal age
C-Section
Obesity
Multiple gestations
Thrombophilia
Prior VTE
Risk returns to baseline by 12 weeks postpartum
Consider MI in differential as risk can increase 3-6 times during the postpartum period
Risk of DVT equal in 1st and 2nd trimesters, higher risk in 3rd trimester and 3 weeks postpartum 
PE most commonly occurs in postpartum. 
Common risk factors include:
Advanced maternal age
C-Section
Obesity
Multiple gestations
Thrombophilia
Prior VTE
Advanced maternal age
C-Section
Obesity
Multiple gestations
Thrombophilia
Prior VTE
Deep venous thrombosis (uncomplicated)
Phlegmasia alba dolens
Phlegmasia cerulea dolens
Venous gangrene<unk><unk> 
Isolated distal deep venous thrombosis
Only 40% of ambulatory ED patients with PE have concomitant DVT
Hemodynamically unstable with symptoms of shock
ACCP 2016 CHEST Guidelines: Sustained hypotension ONLY criteria (systolic BP <90 for at least 15min or requiring inotropic support)
Previous definitions (e.g. AHA 2011) include cardiac arrest/pulselessness or persistent profound bradycardia (HR <40 with signs of shock)
Right ventricular dysfunction (RVD) and/or myocardial necrosis in the absence of persistent hypotension or shock (SBP >90)
RV dysfunction
RV dilation or dysfunction on TTE
"D Sign" on bedside echo (LV takes on a "D" shape due to RV dilation)
RV dysfunction on CT defined as RV/LV ratio >0.9
Elevation of BNP (>90)
ECG findings of right heart strain (see diagnosis below)
Myocardial necrosis: Troponin I >0.4
RV dilation or dysfunction on TTE
"D Sign" on bedside echo (LV takes on a "D" shape due to RV dilation)
RV dysfunction on CT defined as RV/LV ratio >0.9
Elevation of BNP (>90)
ECG findings of right heart strain (see diagnosis below)
"D Sign" on bedside echo (LV takes on a "D" shape due to RV dilation)
No hemodynamic compromise and no RV strain
Limited to the subsegmental<unk>  arteries
Pulmonary embolism in pregnancy
Acute coronary syndromes 
Cardiac arrest in pregnancy
STEMI
Comorbid diseases in pregnancy
Non-STEMI
Abdominal pain in pregnancy
Unstable angina