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¹H NMR: Complex Splitting01:13

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When protons A and X are coupled, their nuclear spin energy levels are slightly modified. This is because the energy required to excite proton A to a spin state parallel to proton X is slightly different from the energy required for it to become anti-parallel to spin X. Consequently, there are two possible excitation frequencies for A (A1 and A2), depending on the spin state of X, and vice versa. The mutual nature of coupling implies that the difference between frequencies A1 and A2, indicated...
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In the AX proton spin system, proton A can sense the two spin states of a coupled proton X, resulting in a doublet NMR signal with two peaks of equal (1:1) intensity. When proton A is coupled to two equivalent protons (AX2 spin system), the spin states of each X can be aligned with or against the external field, creating three possible scenarios. This results in a 1:2:1  triplet signal, where the central peak corresponds to the chemical shift of A and is twice as large or intense as the...
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Tetrahedral Complexes
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Protocol for Developing a Femur Osteotomy Model in Wistar Albino Rats
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Day-case bilateral sagittal split osteotomy.

L A Davies1, E M S Crawford1, J L Jones1

  • 1Oral and Maxillofacial Surgery Department, Royal Gwent Hospital, Cardiff Road, Newport, NP20 2UB, United Kingdom.

The British Journal of Oral & Maxillofacial Surgery
|December 12, 2018
PubMed
Summary
This summary is machine-generated.

Bilateral sagittal split osteotomy (BSSO) can be safely performed as a day-case procedure, improving patient satisfaction. Early morning surgeries are recommended to minimize unplanned admissions for BSSO patients.

Keywords:
Day surgerybilateral sagittal split osteotomiesday caseorthognathic surgery

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Area of Science:

  • Oral and Maxillofacial Surgery
  • Surgical Day Care

Background:

  • Traditionally, bilateral sagittal split osteotomy (BSSO) necessitated inpatient admission in the UK.
  • National standards for day surgery, introduced in 2011, prompted a shift in practice at Royal Gwent Hospital.

Purpose of the Study:

  • To evaluate the safety and success of BSSO as a day-case procedure.
  • To demonstrate adherence to current UK national standards for day surgery.

Main Methods:

  • Retrospective review of patients undergoing isolated BSSO planned as day cases.
  • Data collected from March 2015 to February 2017.

Main Results:

  • Out of 34 eligible patients, 32 were discharged on the same day.
  • Two patients required postoperative admission due to nausea/vomiting and bleeding, respectively.
  • No patients were readmitted within 48 hours of the procedure.

Conclusions:

  • Bilateral sagittal split osteotomy is a viable and safe day-case procedure.
  • Scheduling surgeries for early in the morning can help reduce unplanned admissions.