Description of The Hemodynamic Condition in Patients with Subarachnoid Block

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Published Apr 21, 2026
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Statistic
Vol. 1 No. 1 (2026): January-April

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Luh Putu Joelle Dinar Diani
Anasthesiology Diploma, Institute of Technology and Health Bali, Denpasar, Bali, Indonesia
Ni Luh Putu Inca Buntari Agustini
Master of Nursing, Institute of Technology and Health Bali, Denpasar, Bali, Indonesia
I Nyoman Arya Maha Putra
Master of Nursing, Institute of Technology and Health Bali, Denpasar, Bali, Indonesia

Abstract

Background: Subarachnoid block (SAB) anesthesia is widely used in surgical procedures and may cause hemodynamic changes that require close monitoring. This study aimed to describe the hemodynamic condition in patients undergoing subarachnoid block anesthesia.


Methods: This study employed a descriptive quantitative design with a cross-sectional observational approach using repeated measurements. A total of 265 respondents were selected using purposive sampling. Data were collected using observation sheets to assess hemodynamic parameters, including systolic and diastolic blood pressure, mean arterial pressure (MAP), heart rate, and oxygen saturation (SpO₂). Measurements were recorded before SAB and at 5, 10, 15, 20, 25, and 30 minutes after anesthesia. Data were analyzed using univariate analysis and presented as frequency distributions.    


Result: The results showed that most respondents were male (52.1%), and the most common type of surgery was sectio caesarea (20.4%). The majority of SAB injections were performed at the L3–L4 level (56.2%). Hemodynamic changes were observed, with a decrease in systolic and diastolic blood pressure and MAP at 5–10 minutes after SAB, followed by stabilization within normal ranges at 15–30 minutes. Heart rate remained mostly within normal limits, while oxygen saturation (SpO₂) was stable at 95–100% in all respondents throughout the observation period.      


Conclusion: In conclusion, subarachnoid block anesthesia causes transient hemodynamic changes, particularly in the early phase after administration, but these parameters tend to stabilize over time. Continuous monitoring is essential, especially within the first 10 minutes, to prevent potential complications.

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