Precautions for Beta Thalassemia Patients Undergoing IVF Stimulation

Cardiac Assessment and Management

Comprehensive cardiac evaluation is essential before starting IVF stimulation, including assessment of heart function and dimensions, according to the American Heart Association 1, 2
Annual electrocardiography and echocardiography should be performed to identify pre-clinical cardiac disease that could be exacerbated during IVF, as recommended by the American College of Cardiology 2, 3
Iron overload status should be evaluated as it may result in cardiac complications during the hormonal changes of IVF stimulation, with a strength of evidence level of high 4
Patients with severe heart or liver iron overload may require intensified iron chelation therapy before proceeding with IVF, based on guidelines from the American Heart Association 4

Prophylactic anticoagulation with heparin or low molecular weight heparin (LMWH) is strongly indicated during IVF stimulation due to increased thrombosis risk, according to the American College of Rheumatology 5, 4
Splenectomized beta thalassemia patients have particularly high thrombotic risk and require careful anticoagulation monitoring, with a recommendation from the American Society of Hematology 4
LMWH should be started at the beginning of ovarian stimulation, withheld 24-36 hours before oocyte retrieval, and resumed following retrieval, as suggested by the American College of Obstetricians and Gynecologists 5
Continue anticoagulation until estrogen levels return to near-physiologic levels if no pregnancy occurs, based on guidelines from the American College of Rheumatology 5

Continuous cardiac monitoring is recommended during IVF stimulation in patients with significant cardiac iron loading, with a strength of evidence level of moderate 6
Monitor for signs of ovarian hyperstimulation syndrome, which carries additional thrombotic risk in thalassemia patients, according to the American Society for Reproductive Medicine 5
Single embryo transfer (SET) is strongly recommended to avoid multiple pregnancies, which significantly increase cardiovascular stress, as recommended by the European Society of Human Reproduction and Embryology 7, 8, 9

Have a plan for managing potential cardiac decompensation, which may require specialized care at a center experienced in treating thalassemia patients, with a recommendation from the American Heart Association 6
Avoid aggressive inotropic therapy if cardiac complications develop, as this can be detrimental in thalassemia patients, based on guidelines from the American College of Cardiology 1
If pregnancy is achieved, continue thromboprophylaxis throughout pregnancy for patients with significant iron overload or splenectomy, as suggested by the American College of Obstetricians and Gynecologists 4
Monitor cardiac function carefully throughout pregnancy as blood volume and pressure changes may compromise heart function, with a strength of evidence level of high 4