A Case of Microangiopathic Antiphospholipid-Associated Syndromes during Pregnancy: Review of the Literature

Evaluation of platelet parameters, coagulation markers, antiphospholipid syndrome, and thyroid function in palestinian women with recurrent pregnancy loss

BACKGROUND

Multiple etiologies contribute to recurrent pregnancy loss (RPL) including immunological, endocrine, anatomical, genetic and infection but more than 50% of cases remain unexplained. Evidences of thrombotic and inflammatory processes were observed at maternal-fetal interface and considered pathological findings in most RPL cases including unexplained cases. This study aimed to evaluate the association between RPL and several risk factors: platelet parameters, coagulation factors, antiphospholipid syndrome, and thyroid function.

METHODS

This is an unmatched case-control study that included 100 RPL and 100 control women. Anthropometric and health data were collected and a gynecologist examined participants to assure fitting the inclusion criteria. Platelet parameters [including Mean Platelet Mass (MPM), Concentration (MPC) and Volume (MPV)] and ratios (MPV/Platelet, MPC/Platelet, MPM/Platelet, Platelet/Mononuclear cells), coagulation markers [Protein C (PC), Protein S (PS), Antithrombin III, D-dimer], antiphospholipid antibodies [Anti-phospholipid (APA), Anti-cardiolipin (ACA) and anti-B2-glycoprotein 1], Lupus anticoagulant, Antinuclear antibodies, and thyroid function (Thyroid stimulating hormone and anti-thyroid peroxidase) were measured.

RESULTS

Mean ages of cases and controls at marriage were 22.5 years for both, and their current ages were 29.4 and 33.0, respectively. 92% of cases and 99% of controls aged blow 30 years at marriage. 75% of cases have 3-4 miscarriages and 9% have ≥ 7 miscarriages. Our results indicated significantly lower male/female age ratio (p = .019), PC (p = .036) and PS (p = .025) in cases compared to controls. Plasma D-dimer (p = .020) and antiphospholipid antibodies [ACA (IgM and IgG), APA (IgM)] were significantly higher in cases compared to controls. No significant differences were observed between cases and controls concerning APA (IgG), anti-B2-glycoprotein 1 (IgM and IgG), Lupus anticoagulant, Antinuclear antibodies, platelet parameters, thyroid markers, family history of miscarriage, consanguineous marriage, and other health data.

CONCLUSIONS

This is the first study that investigated the association between platelet, coagulation, antiphospholipid, autoimmune and thyroid parameters, and RPL in Palestinian women. Significant associations between male/female age ratio, PC, PS, D-dimer, ACA (IgM, IgG), APA (IgM) and RPL were observed. These markers could be used in evaluating RPL. These findings confirm the heterogeneous nature of RPL and emphasize the need for further studies to find out risk factors for RPL.

Clinical characteristics and risk factors of microvascular involvement in primary antiphospholipid syndrome: a longitudinal single-center study in China

OBJECTIVES

The objective of this study was to investigate risk factors of microvascular involvement and survival in Chinese patients with primary antiphospholipid syndrome.

METHODS

In this single-center, retrospective study, we enrolled 112 patients with a confirmed diagnosis of primary antiphospholipid syndrome who were admitted to Peking Union Medical College Hospital from January 2004 to December 2016. Demographic data, clinical characteristics, laboratory results, and follow-up records were collected.

RESULTS

A total of 112 patients with primary antiphospholipid syndrome were studied. Microvascular involvement was identified in 21 patients (18.75%). Patients with microvascular involvement experienced fewer episodes of arterial or venous thrombosis (28.6% vs. 84.6%) and a higher incidence of thrombocytopenia (85.7% vs. 54.9%), respectively. Low complement and elevated high-sensitivity CRP levels were observed more frequently in the microvascular group compared with the non-microvascular group (complement 38.1% vs. 18.7%; high-sensitivity CRP 71.4% vs. 31.9%, respectively). Anti-β2-glycoprotein I antibodies were more prevalent in patients with microvascular involvement than in patients without (66.7% vs. 33.0%, respectively). Multivariate logistic regression analysis revealed that thrombocytopenia (odds ratio = 4.523, 95% confidence interval 1.139-17.962), elevated high-sensitivity CRP levels (odds ratio = 6.385, 95% confidence interval 1.969-20.704), and anti-β2-glycoprotein I antibody positivity (odds ratio = 5.042, 95% confidence interval 1.555-16.352) were independent risk factors for microvascular involvement. A Kaplan-Meier analysis revealed that survival was significantly poorer in patients with microvascular involvement compared with patients without (p = 0.0278).

CONCLUSIONS

In addition to arterial and venous thrombosis, antiphospholipid syndrome can affect the microvasculature of select organs. It is thus important for clinicians to be aware that antiphospholipid syndrome-associated microvascular involvement has a unique pathogenesis and can be a life-threatening condition.

A Case of Massive Hepatic Infarction in a Patient with HELLP Syndrome

Background  Hepatic infarction is an exceedingly rare complication of hemolysis, elevated liver enzymes, and low platelets syndrome. Few cases have been described in the medical literature and the true incidence remains unknown. It can lead to fulminant liver failure, liver transplant, or death if not promptly addressed. Case Report  A 22-year-old primigravida presented with right upper quadrant and epigastric pain at 28 weeks' gestation. She had severely elevated blood pressures requiring intravenous antihypertensives as well as proteinuria, thrombocytopenia, and mild transaminitis. Within 6 hours of admission, her rapidly rising liver function tests (LFTs) necessitated urgent delivery by primary cesarean section. Her liver enzymes continued to rapidly worsen postoperatively and immediate postpartum computed tomography of the abdomen and pelvis revealed massive hepatic infarction, 11 × 10 × 15 cm, of the right lobe of the liver. Her transaminases peaked at alanine transferase of 2,863 IU/L and aspartate transferase of 2,732 IU/L. She received supportive multidisciplinary intensive care, and LFTs returned to normal by postoperative day 20. Conclusion  Hepatic infarction is an extraordinarily rare complication of pre-eclampsia. Early recognition and prompt multidisciplinary management are vital to prevent catastrophic bleeding, hepatic failure, and death.

Microangiopathic antiphospholipid antibody-associated syndrome in a pregnant lady

We describe a gravid 37-year-old Chinese lady with known triple positive primary antiphospholipid syndrome with previous recurrent deep vein thrombosis and early spontaneous miscarriages. She was managed with low-molecular weight heparin, aspirin, hydroxychloroquine, prednisolone and monthly intravenous immunoglobulin. She presented with recurrent per-vaginal bleeding at 22 weeks of gestation and was found to have abruptio placentae. Anti-coagulation was held off. She subsequently delivered a stillborn at 24 weeks and anti-coagulation was restarted. Day 5 post-delivery, she developed HELLP, with hemolytic anaemia (Hb 10.1 g/dL, haptoglobin <30 g/L, LDH 2206 U/L), elevated transaminases (AST 1196 U/L, ALT 1130 U/L) and thrombocytopenia (platelet 28 × 10^9/L). There were also episodes of acute severe headache and abdominal pain assessed to be secondary to microvascular ischemia as CT did not reveal any thrombosis. Her blood pressure hovered persistently above systolic 180 mmHg, and required at least three anti-hypertensives. These were coupled with a new onset proteinuria of 2 to 3 g/day. There was no evidence of disseminated intravascular coagulation. She was assessed to have microangiopathic antiphospholipid syndrome and was started on plasmapheresis. On Day 10 post-partum, the patient complained of foul-smelling vaginal discharge and was found to have retained products of conception, which was immediately evacuated. Her course was followed by poly-microbial sepsis secondary to Enterococcus fecalis, Klebsiella Pneumoniae and Escherichia coli. The patient was further treated with imipenem and she completed eight exchanges of plasmapheresis followed by five days of intravenous immunoglobulins with good clinical and biochemical improvement.