Biomaterial Database

Reassessment of intravenous MgSO4 therapy in preeclampsia-eclampsia. 1981

B M Sibai, and J Lipshitz, and G D Anderson, and P V Dilts

The occurrence of seizures in preeclamptic and eclamptic women is considered very unlikely during treatment with the standard dose of continuous intravenous magnesium sulfate. During a 21-month period, the authors encountered 13 patients who developed seizure activity while receiving intravenous MgSO4. Serum magnesium (Mg) levels at the time of seizure were below the therapeutic range in 11 of the 13 patients, thus prompting a study of serum Mg levels in preeclamptic patients treated with MgSO4. Random serum Mg samples were obtained from 120 patients treated with intravenous MgSO4 for preeclampsia-eclampsia. The samples were collected 2 to 48 hours after the loading dose and while the patients were taking a maintenance dose of either 1, 2, or 3 g/hr. When a maintenance dose of 1 or 2 g/hr was used, 98 and 50% of the respective serum magnesium values were below levels considered therapeutic by several authors. Therapeutic levels were achieved in ll patients receiving a maintenance dose of 3 g/hr. The recommended maintenance dose of MgSO4 of 1 g/hr was found insufficient to prevent the occurrence of eclamptic seizures in some preeclamptic patients.

UI	MeSH Term	Description	Entries
D007263	Infusions, Parenteral	The administration of liquid medication, nutrient, or other fluid through some other route than the alimentary canal, usually over minutes or hours, either by gravity flow or often by infusion pumping.	Intra-Abdominal Infusions,Intraperitoneal Infusions,Parenteral Infusions,Peritoneal Infusions,Infusion, Intra-Abdominal,Infusion, Intraperitoneal,Infusion, Parenteral,Infusion, Peritoneal,Infusions, Intra-Abdominal,Infusions, Intraperitoneal,Infusions, Peritoneal,Intra Abdominal Infusions,Intra-Abdominal Infusion,Intraperitoneal Infusion,Parenteral Infusion,Peritoneal Infusion
D008278	Magnesium Sulfate	A small colorless crystal used as an anticonvulsant, a cathartic, and an electrolyte replenisher in the treatment of pre-eclampsia and eclampsia. It causes direct inhibition of action potentials in myometrial muscle cells. Excitation and contraction are uncoupled, which decreases the frequency and force of contractions. (From AMA Drug Evaluations Annual, 1992, p1083)	Magnesium Sulfate, Heptahydrate,Heptahydrate Magnesium Sulfate,Sulfate, Magnesium
D011225	Pre-Eclampsia	A complication of PREGNANCY, characterized by a complex of symptoms including maternal HYPERTENSION and PROTEINURIA with or without pathological EDEMA. Symptoms may range between mild and severe. Pre-eclampsia usually occurs after the 20th week of gestation, but may develop before this time in the presence of trophoblastic disease.	Toxemias, Pregnancy,EPH Complex,EPH Gestosis,EPH Toxemias,Edema-Proteinuria-Hypertension Gestosis,Gestosis, EPH,Hypertension-Edema-Proteinuria Gestosis,Preeclampsia,Preeclampsia Eclampsia 1,Pregnancy Toxemias,Proteinuria-Edema-Hypertension Gestosis,Toxemia Of Pregnancy,1, Preeclampsia Eclampsia,1s, Preeclampsia Eclampsia,EPH Toxemia,Eclampsia 1, Preeclampsia,Eclampsia 1s, Preeclampsia,Edema Proteinuria Hypertension Gestosis,Gestosis, Edema-Proteinuria-Hypertension,Gestosis, Hypertension-Edema-Proteinuria,Gestosis, Proteinuria-Edema-Hypertension,Hypertension Edema Proteinuria Gestosis,Of Pregnancies, Toxemia,Of Pregnancy, Toxemia,Pre Eclampsia,Preeclampsia Eclampsia 1s,Pregnancies, Toxemia Of,Pregnancy Toxemia,Pregnancy, Toxemia Of,Proteinuria Edema Hypertension Gestosis,Toxemia Of Pregnancies,Toxemia, EPH,Toxemia, Pregnancy,Toxemias, EPH
D011247	Pregnancy	The status during which female mammals carry their developing young (EMBRYOS or FETUSES) in utero before birth, beginning from FERTILIZATION to BIRTH.	Gestation,Pregnancies
D004461	Eclampsia	Onset of HYPERREFLEXIA; SEIZURES; or COMA in a previously diagnosed pre-eclamptic patient (PRE-ECLAMPSIA).	Eclampsias
D005260	Female		Females
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man