Correlation of the Dural Sac Dimension With the Spread of Spinal Anesthesia

Correlation of the Dural Sac Dimension With the Spread of Spinal Anesthesia in Elderly Patients

Cerebrospinal fluid volume is an important factor that influences peak block height and regression of sensory and motor blockade. The aim of this study is to evaluate the effect of dural sac dimension on the spread of spinal anesthesia in elderly patient using ultrasound.

Inclusion Criteria:

• Patients who are scheduled for elective surgery under spinal anesthesia

Exclusion Criteria:

• Known anatomical abnormality or pathology in the spine
• History of lumbar spinal surgery or compression fracture
• Height less than 150 cm