Only spinal anesthesia, for Laparoscopic surgery it is not at good anesthesia choice. Especially when adjuvants are added. Though some are using for short procedures and it is not a good choice. Because respiratory reserves, FRC, etc. all reduce under spinal anesthesia. Even without adjuvants. Due to abdominal and respiratory muscle paralysis. It is worse in obese (even mild obesity).
Things become worse with adjuvants like opioids, dexmedetomidine etc. The lap surgery requires hyperventilation because carbon dioxide gives intense stress to the body. Close your nose and mouth tightly and feel the stress on your body after 20 sec. In spinal Anesthesia, the ventilation is not controlled. Hemodynamic stress due to carbon dioxide is not visible due to sympathetic block + Adrenal gland block. Everything appears normal and encouraging until the system suddenly decompensates. So it is better…
