lung embolismnursing diagnosis pulmonary embolismsubsegmental pulmonary embolismmultiple pulmonary embolismssubmassive pulmonary embolismpulmonary embolism prognosispulmonary embolism pregnancypulmonary embolism postpartumunprovoked pulmonary embolismembolism diagnosisinterventions for pulmonary embolismpulmonary thromboembolism diagnosis