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Regional AnesthesiaRegional Anesthesia
for the Lower Limbsfor the Lower Limbs
Dr. Prakash Ambardekar
SeniorAnaesthesiologi...
Diabetes Mellitus is not a simple endocrine disorder
1] Cardio-vascular system - Angina pectoris,
silent small to massive ...
Diabetes Mellitus is not a simple endocrine disorder
6] Septicaemia - following infection affecting various systems
7] Flu...
Why regional anaesthesia ?
1] Ideal for day-care patients
2] Safety in high risk patients
3] No intra-op regurgitation & a...
Why regional anaesthesia ? Continued….
6] Minimal effects on vital parameters
7] Safer in emergency situations
8] Can be r...
Why not other modes of Anesthesia ??
General Anesthesia: [besides usual precautions]
a] Risk of Aspiration and PONV
b] Dif...
Why not other modes of Anesthesia ??
Spinal & Epidural Anesthesia
a] Prevention and management of hypotension
b] Cannot be...
Limitations
1] Surgical time limit is between
1-3 hrs.
2] Patient’s co-operation is must
3] Failure or partially acted blo...
Types of blocks
1] Sciatic & femoral nerve block
2] Sciatic nerve block in lower thigh
3] Leg block
a] low
b] mid
c] high
...
Pre-block preparation
Besides usual instructions….
Application of elastocrepe bandage
2-3 days prior to surgery
Advantages...
Pre-block preparation
Counseling the patient
regarding the procedure
and the expectation from the patient
(compliance and ...
Lower leg block or modified ankle block
Deep peroneal nerve – can be
blocked by injecting
subcutaneously
3-5 mm along the ...
Lower leg block or modified ankle block
Post. Tibial nerve –
Blocked by injecting
3-5 ml 2% xylocaine
at the junction of p...
Sural nerve
Inject 2% xylocaine
between the tendoachilles
and the calcaneaum on
the lateral aspect
Lower leg block or modi...
Ring block –
0.5 % xylocaine around the
leg to block cutaneous nerves
Lower leg block or modified ankle block
Calcaneal nerve block
2 Finger breadths
proximal to the
medial malleolus
Inject along the
direction of the nerve
Lower leg...
Mid leg block
Anterior Tibial nerve
Inject 2- 4 ml 2% xylocaine
subcutaneously 5-7 mm along
the lateral border of the shin
Mid leg block
Posterior Tibial Nerve
Spinal needle no 23 G is inserted from the lateral side
of the leg over the ant. bord...
Mid leg block
Sural nerve
Inject 2 – 3 ml 2% xylocaine
along a line extended proximally
tangential to the lateral border
o...
Ring block
0.5 % xylocaine around the
leg to block cutaneous nerves
Mid leg block
High leg block
Anterior Tibial nerve
Inject 3-4 ml 2% xylocaine
5-10 mm deep lateral to the
upper end of shin
High leg block
Posterior Tibial nerve
2-4cm below the neck of the fibula
Lateral approach –
Spinal needle no 23 G is
passe...
Lateral Popliteal Nerve
2- 4 ml 2% xylocaine
injected around the
neck of fibula
High leg block
Ring block
0.5 % xylocaine around the
leg to block cutaneous nerves
High leg block
If patient has a pain-free leg,
then one may give sciatic nerve
block in the lower third of thigh alongwith
lat. Popliteal...
Practice regularly
Your patience
The surgeons’ patience
The patients’ patience!
Steps to success with local blocks
Patient...
In Diabetic Foot
Blocks are the way to
go!!
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  1. 1. Regional AnesthesiaRegional Anesthesia for the Lower Limbsfor the Lower Limbs Dr. Prakash Ambardekar SeniorAnaesthesiologist Dept of Anesthesia SL Raheja Hospital, Mumbai
  2. 2. Diabetes Mellitus is not a simple endocrine disorder 1] Cardio-vascular system - Angina pectoris, silent small to massive Myocardial Infarcts , varying degrees of cardiomyopathies, varying types of Conduction blocks etc may be accompanied with Hypertension 2] Reno-vascular system - Nephropathies leading to Chronic renal failure 3] Central nervous system –Secondary effects 4] Autonomic nervous system -Sympathetic & Parasympathetic systems causing Autonomic Imbalance 5]Immunological system – suppression, prone to infections Contd…
  3. 3. Diabetes Mellitus is not a simple endocrine disorder 6] Septicaemia - following infection affecting various systems 7] Fluid & Electrolyte status altered. 8] Pulmonary system – alters ventilation and perfusion 9] G. I. system – slows gastric emptying - aspiration 10] Skeleto-muscular system - fusion of upper cervical vertebrae with limited neck movement, if accompanied with obesity & short neck Thus, in Diabetes, the selection of Anesthesia becomes a tricky and highly skillful job.
  4. 4. Why regional anaesthesia ? 1] Ideal for day-care patients 2] Safety in high risk patients 3] No intra-op regurgitation & aspiration 4] No PONV 5] Minimal alteration in drug schedule -specially in diabetics
  5. 5. Why regional anaesthesia ? Continued…. 6] Minimal effects on vital parameters 7] Safer in emergency situations 8] Can be repeated frequently 9] Conscious & arousable patient at the end of the surgery 10] Reduction in morbidity & mortality
  6. 6. Why not other modes of Anesthesia ?? General Anesthesia: [besides usual precautions] a] Risk of Aspiration and PONV b] Difficult intubations c] Resistant hypotension which may last for longer time d] Management of ischaemic changes and arrhythmias e] Management of blood sugar
  7. 7. Why not other modes of Anesthesia ?? Spinal & Epidural Anesthesia a] Prevention and management of hypotension b] Cannot be repeated frequently [ except in continuous epidural analgesia ] especially for small but painful procedures.
  8. 8. Limitations 1] Surgical time limit is between 1-3 hrs. 2] Patient’s co-operation is must 3] Failure or partially acted block
  9. 9. Types of blocks 1] Sciatic & femoral nerve block 2] Sciatic nerve block in lower thigh 3] Leg block a] low b] mid c] high 4] Field Block (small infected cysts, abscess, carbuncles)
  10. 10. Pre-block preparation Besides usual instructions…. Application of elastocrepe bandage 2-3 days prior to surgery Advantages :- • limb becomes soft & supple • reduced oedema , improved limb circulation • pH of tissue fluid alters Success rate improves
  11. 11. Pre-block preparation Counseling the patient regarding the procedure and the expectation from the patient (compliance and accurate replies regarding paresthesia)
  12. 12. Lower leg block or modified ankle block Deep peroneal nerve – can be blocked by injecting subcutaneously 3-5 mm along the lat border of the shin with 2 ml 2% xylocaine with 24 g 1.5 inch needle
  13. 13. Lower leg block or modified ankle block Post. Tibial nerve – Blocked by injecting 3-5 ml 2% xylocaine at the junction of proximal 1/3rd with distal 2/3rd of medial malleolus to calcaneum, where normally pulsations of post. Tibial artery is felt.
  14. 14. Sural nerve Inject 2% xylocaine between the tendoachilles and the calcaneaum on the lateral aspect Lower leg block or modified ankle block
  15. 15. Ring block – 0.5 % xylocaine around the leg to block cutaneous nerves Lower leg block or modified ankle block
  16. 16. Calcaneal nerve block 2 Finger breadths proximal to the medial malleolus Inject along the direction of the nerve Lower leg block or modified ankle block
  17. 17. Mid leg block Anterior Tibial nerve Inject 2- 4 ml 2% xylocaine subcutaneously 5-7 mm along the lateral border of the shin
  18. 18. Mid leg block Posterior Tibial Nerve Spinal needle no 23 G is inserted from the lateral side of the leg over the ant. border of fibula going medially downwards just to slip the interosseous border of tibia , advance 1-2 mm & deposit 8-10 ml 2% xylocaine
  19. 19. Mid leg block Sural nerve Inject 2 – 3 ml 2% xylocaine along a line extended proximally tangential to the lateral border of the tendo achilles
  20. 20. Ring block 0.5 % xylocaine around the leg to block cutaneous nerves Mid leg block
  21. 21. High leg block Anterior Tibial nerve Inject 3-4 ml 2% xylocaine 5-10 mm deep lateral to the upper end of shin
  22. 22. High leg block Posterior Tibial nerve 2-4cm below the neck of the fibula Lateral approach – Spinal needle no 23 G is passed from the lateral side of the leg over the ant. border of fibula going medially downwards just to slip the interosseous border of tibia , advance 1-2 mm & deposit 8-10 ml 2% xylocaine
  23. 23. Lateral Popliteal Nerve 2- 4 ml 2% xylocaine injected around the neck of fibula High leg block
  24. 24. Ring block 0.5 % xylocaine around the leg to block cutaneous nerves High leg block
  25. 25. If patient has a pain-free leg, then one may give sciatic nerve block in the lower third of thigh alongwith lat. Popliteal nerve block and ring block. High leg block An alternate technique -
  26. 26. Practice regularly Your patience The surgeons’ patience The patients’ patience! Steps to success with local blocks Patients’ comfort The surgeons comfort Your comfort AND SAFETY!!
  27. 27. In Diabetic Foot Blocks are the way to go!!
  • venkareddypothireddy

    Dec. 3, 2018

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