Posterior reversible encephalopathy syndrome in a pregnant patient without eclampsia or preeclampsia

Neurological Complications in Pregnancy and the Puerperium: Methodology for a Clinical Diagnosis

Neurological complications in pregnancy and the puerperium deserve particular attention from specialists due to the worsening of the clinical picture for both the mother and the fetus. This narrative review of existing data in the literature aims to analyze the most common "red flag symptoms" attributable to neurological complications such as pre-eclampsia (PE), eclampsia, HELLP syndrome, posterior reversible encephalopathy syndrome (PRES), cerebral vasoconstriction syndrome (RCVS), stroke, CVS thrombosis, pituitary apoplexy, amniotic fluid embolism and cerebral aneurysm rupture, with the aim of providing a rapid diagnostic algorithm useful for the early diagnosis and treatment of these complications. The data were derived through the use of PubMed. The results and conclusions of our review are that neurological complications of a vascular nature in pregnancy and the puerperium are conditions that are often difficult to diagnose and manage clinically. For the obstetrics specialist who is faced with these situations, it is always important to have a guide in mind in order to be able to unravel the difficulties of clinical reasoning and promptly arrive at a diagnostic hypothesis.

Posterior reversible encephalopathy in a pregnant woman without preeclampsia or eclampsia: A case report

BACKGROUND

We report a case of a pregnant woman who presented posterior reversible encephalopathy syndrome (PRES) without pre-eclampsia, eclampsia, or any other common causes of PRES.

METHODS

A 32-year-old primigravida at 25 weeks and 4 days of gestation was admitted to neurology department because of suffering intermittent headache, hearing loss, memory loss with mental and behavioral disorder, and blurred vision for 1 month. She was healthy before without hypertension, migraine, or other medical or family history. Brain magnetic resonance imaging (MRI) revealed diffuse symmetrical high-signal intensity lesions in the white matter, medulla oblongata, without enhancement. After completely multidisciplinary discussion and with the family of the patient, she accepted termination of pregnancy.

RESULTS

After the operation, the patient improved symptomatically. The follow-up MRI showed a decrease of the white matter lesion after 3 months and complete recovery at postoperative 6 months. The patient returned to work without any neurological sequelae.

CONCLUSION

It might widen the cause spectrum of PRES that pregnancy itself without pre-eclampsia, eclampsia, or any other known risk factors could cause PRES. Pregnancy with acute or subacute leukoencephalopathy should be screened related causes and risk factors carefully. Hormonal fluctuations during the pregnancy might account for pregnancy-related PRES.

Systemic lupus erythematosus complicated with reversible posterior encephalopathy syndrome: a case report

A 28-year-old female patient was hospitalized primarily because of “intermittent fever for 28 days aggravated by systemic rashes, oral ulcer, and edema in both eyelids for 5 days.” During treatment, convulsions and loss of consciousness occurred. Magnetic resonance imaging (MRI) of the head revealed an abnormal signal with shadows in the bilateral frontal, parietal, temporal, and occipital lobes; cerebellar hemispheres; and basal nodes, with high signal intensity on T2 weighted imaging (T2WI), on fluid-attenuated inversion-recovery, and of the apparent diffusion coefficient and low signal intensity on T1WI and diffusion weighted imaging. Therefore, the patient was diagnosed with systemic lupus erythematosus (SLE) with reversible posterior encephalopathy syndrome (RPES). Intravenous high-dose methylprednisolone and cyclophosphamide were administered for blood pressure control, which effectively controlled the disease. Therefore, when patients with SLE and hypertension or renal insufficiency or those receiving high-dose methylprednisolone or immunosuppressants suddenly present with neurologic abnormalities, a diagnosis of RPES must be considered, and head MRI is the first choice for diagnosis of this disease. In terms of treatment, the blood pressure should be quickly controlled, and the primary disease should be aggressively treated.

Neuroimaging During Pregnancy and the Postpartum Period

New onset or exacerbation of preexisting neurologic symptoms during pregnancy often necessitates brain or spinal cord imaging. Magnetic resonance techniques are preferred imaging modalities during pregnancy and the postpartum period. Ionizing radiation with computed tomography and intravenous contrast material with magnetic resonance or computed tomography should be avoided during pregnancy. New onset of headaches in the last trimester or in the postpartum period may indicate cerebrovascular disease or a mass lesion, for which brain imaging is necessary. The continuum of cerebrovascular complications of pregnancy and enlarging lesions may produce neurologic symptoms later in pregnancy and after delivery, necessitating imaging.

Atypical Case of Posterior Reversible Encephalopathy in a Pregnant Patient Without Preeclampsia

We report a 33-year-old gravida one patient at 41 weeks gestation who had been admitted to the Labor and Delivery floor amid labor with seizures and no prior history of eclampsia, hypertension, or seizures. The patient was transported for an emergency cesarean section under general anesthesia. The patient’s epidural placed prior to the seizure was discontinued. The patient was extubated post-delivery. Neurology was consulted to determine the cause of first-time seizures. Computed tomography and magnetic resonance imaging revealed posterior reversible encephalopathy syndrome. Obstetricians and anesthesiologists should consider posterior reversible encephalopathy syndrome when performing Magnetic Resonance Imaging in previously healthy patients who initially present with seizures during labor, especially in patients who do not have hypertension.