A request for a clarification about classification and nomenclature of cervical plexus blocks

References (9)

1. Kim JS, Ko JS, Bang S, et al. Cervical plexus block. Korean J Anesthesiol 2018:71;274-88
2. Calderon AL, Zetlaoui P, Benatir F, et al. Ultrasoundguided intermediate cervical plexus block for carotid endarterectomy using a new anterior approach: a twocentre. Anaesthesia 2015;70:445-51
3. Guidera AK, Dawes PJ, Fong A, et al. Head and neck fascia and compartments: no space for spaces. Head Neck 2014;36:1058-68
4. Elmaddawy AEA, Mazy AE. Ultrasound- guided bilateral superficial cervical plexus block for thyroid surgery: The effect of dexmedetomidine addition to bupivacaineepinephrine. Saudi Anesth 2018;12:412-8
5. Barone M, Diemunsch P, Baldassarre E, et al. Carotid endarterectomy with intermediate cervical plexus block. Tex Heart Inst J 2010;37:297-300
6. Ramachandran SK, Picton P, Shanks A, et al. Comparison of intermediate vs subcutaneous cervical plexus block for carotid endarterectomy. Br J Anaesth 2011;107:157-63
7. Choquet O, Dadure C, Capdevila X. Ultrasound-guided deep or intermediate cervical plexus block: the target should be the posterior cervical space. Anesth Analg 2010;111:1563-4
8. Pandit JJ, Dutta D, Morris JF. et al. Spread of injectate with superficial cervical plexus block in humans: an anatomical study. Br J Anaesth 2003;91:733-5
9. Casutt M, Job K, Beutler J, et al. Intermediate cervical plexus block for carotid endarterectomy: a case series of the spread of injectate. J Anesthe Clinic Res 2011;2:1-4 10. Pandit JJ, Dorje P, Satya-Krishna R. Investing layer of the cervical fascia of the neck may not exist. Anesthesiology 2006;104:1344.