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[Risk and hemodynamic instability in spinal anesthesia].

C Hemmingsen1, S L Følsgaard, S Frey-Larsen

  • 1Anaestesiafdeling AN og medicinsk afdeling B, Rigshospitalet, København.

Ugeskrift for Laeger
|April 8, 1991
PubMed
Summary
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The Boston Cardiac Risk Index can predict the risk of blood pressure drops during spinal anesthesia. Patients experiencing hemodynamic instability during surgery face higher complication rates and mortality.

Area of Science:

  • Anesthesiology
  • Cardiology
  • Orthopaedic Surgery

Context:

  • Spinal anesthesia is commonly used for orthopaedic surgery.
  • Hemodynamic instability during surgery can lead to adverse outcomes.
  • The Boston Cardiac Risk Index is a tool for assessing cardiac risk.

Purpose:

  • To investigate the predictive value of the Boston Cardiac Risk Index for hemodynamic instability during spinal anesthesia.
  • To determine the association between hemodynamic instability and postoperative outcomes.
  • To evaluate the incidence of hemodynamic instability in different Boston Cardiac Risk Index groups.

Summary:

  • 131 patients undergoing orthopaedic surgery under spinal anesthesia were studied.
  • Hemodynamic instability was defined as a >30% fall in mean arterial pressure or systolic pressure <80 mmHg.

Related Experiment Videos

  • Boston group III patients had a significantly higher incidence of hemodynamic instability (67%) compared to groups I (25%) and II (32%).
  • Postoperative mortality was significantly higher in hemodynamically unstable patients (13%) versus stable patients (3%).
  • Boston group III patients had a 42% postoperative mortality rate, compared to 1% in group I and 7% in group II.

    • Impact:

    • The Boston Cardiac Risk Index can predict the risk of intraoperative hypotension during spinal anesthesia.
    • Patients developing hemodynamic instability during spinal anesthesia have an increased risk of postoperative complications.
    • Maximal postoperative observation and care are recommended for hemodynamically unstable patients.