Resumen

CONTRERAS MARTINEZ, Mtchel Eréndira; CARMONA DOMINGUEZ, Aurea  y  MONTELONGO, Felipe de Jesús. Shock index as initial marker of hypovolemic shock in obstetric hemorrhage of the first trimester. Med. crít. (Col. Mex. Med. Crít.) [online]. 2019, vol.33, n.2, pp.73-78.  Epub 15-Feb-2021. ISSN 2448-8909.

Obstetric hemorrhage continues to be the main cause of maternal morbidity and mortality worldwide, being higher in developing countries. Studies conducted by the World Health Organization (WHO) reveal that between 25 and 30% of maternal deaths are due to obstetric hemorrhage, such deaths usually begin when related to the development of hemorrhagic shock and its consequences, especially multiple organ dysfunction. Obstetric hemorrhage is defined as blood loss greater than or equal to 500 mL. The shock index (CI) is defined as the heart rate divided by the systolic blood pressure, it was first introduced in 1967 by Allgöwer and Burri. It has been studied in patients with and without trauma and is used in clinical practice to evaluate hypovolemic shock or the severity of non-hypovolemic shock and to help acute treatment in this context. In the normal non-pregnant population, the range of the normal CI is 0.5-0.7 and an IC of > 0.9 has been associated with a higher mortality. In the present work, the correlation of the shock index was made as an initial marker of hypovolemic shock in patients with obstetric hemorrhage in the first trimester. An observational, prospective, cross-sectional and analytical study was conducted in patients of all ages with first-trimester obstetric hemorrhage. It was observed that HF in patients with a diagnosis of first-trimester obstetric hemorrhage is significantly associated with hemodynamic instability and a higher probability of requiring blood products.

Palabras llave : Shock index; obstetric hemorrhage; hypovolemic shock.

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