joint arthrocentesis: knee and elbow - cme procedures · goals of the program discuss indications...
TRANSCRIPT
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JOINT ARTHROCENTESIS: KNEE AND ELBOW
Jeff Coffman MS, PA-C Emergency Medicine
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Goals of the program
Discuss indications and contraindications for procedure
Demonstrate knee and elbow aspiration and injection
Discuss pre and post care Discuss follow up Discuss fluid analysis and diagnosis Dictate the chart
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Introduction
Arthrocentesis is the removal of synovial fluid Therapy to reduce pain Evaluate Trauma Diagnostic purposes Septic Joint Gonococcal Arthritis Gout, etc.
Discuss the procedure for Knee and Elbow arthrocentesis, these are the most common on ED
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KNEE ANATOMY
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Indications for Arthrocentesis
Evaluate for Arthritis Suspected septic joint Evaluate joint effusion
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Indications for Arthrocentesis
Evaluate for crystals, seen in gout, pseudogout
Evaluate for injury, is the fluid bloody?
Drain effusion for pain relief
Injection of medicine for therapeutics
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Contraindications
No absolute contraindications but several relative contraindications
Cellulitis over the joint, site of needle entry if clinically it is septic
joint you can still proceed
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Contraindications
Skin lesion or rash at site of needle insertion
Joint Prosthesis- should be preformed by Orthopedist
Coagulopathy use smaller needle wrap with ace wrap recheck sooner
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Contraindications: Osteomyelitis
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Patient Preparation
Explain procedure to patient, obtain consent 1-Skin will be cleaned 2-Local injection of anesthesia to reduce
pain 3-Insertion of a 18-20g needle into joint 4-Aspiration of fluid 5-Possible injection of medication 6-Remove needle, send fluid to lab, dress
area with neo/gauze/ace wrap
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MATERIALS
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Patient Positioning Supine Leg extended possibly slightly flexed Medial or Lateral approach recommended use medial approach with small effusion and
lateral with larger
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Landmarks
Palpate the superior lateral aspect of the patella 1 fingerbreadth above and 1 figerbreadth lateral to
this site, mark with marking pen Provides best access to synvioum
Insert needle at about a 45 degree angle
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DEMONSTRATION
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Post Procedure Treatment
discuss s/s infection to prompt follow up Redness Warmth increased swelling Hematoma fever/chills
RICE
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Complications
Bleeding into joint Injury to deeper structures, may hit ligament Severe pain during procedure, needle may be
hitting highly innervated cartilage Redirect needle
Large effusion occurred after aspiration place ace wrap on joint immediately after
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ELBOW ARTHROCENTESIS
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ELBOW ANATOMY
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Indications
Like the knee diagnosis inflammatory
issues septic joints pain relief Septic joint, more
common in larger joints, also consider gonoccal arthritis
Evaluate Acute Non Traumatic Pain
Occult Fracture? Is blood present
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Differential Diagnosis
Cellulitis Abscess Bursitis Tendonitis
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Contraindications
Cellulitis at needle insertion
Overlying skin lesions/rash
Anticoagulants Prosthetic joint, refer
to orthopedist Known bacteremia Trauma?
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Explain Exam to Patient
Informed Consent Steps to Procedure Reason Possible Complications Post Procedure Treatment
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Steps to the Procedure
Obtain Consent Sitting Position Arm Bent 90 Degree Palm down with arm pronated Use Lateral Technique Safest Medial Technique: you can damage ulnar nerve
and superior ulnar collateral artery
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Steps to the Procedure
Clean the skin Inject local Anesthesia Insert 18-20g needle into joint space Lateral Approach
Aspirate fluid, send for analysis Cover site with dressing Consider Ace wrap
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LANDMARKS
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MATERIALS
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PROCEDURE DEMONSTRATION
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Post Procedure Complications
Same as Knee Cellulitis Septic Joint Swelling Bleeding
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Patient Follow up
Return for prompt recheck if: Increased pain Increased swelling Fever Chills Erythema to area
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Clinical PEARLS
Again- do not use medial approach injury the ulnar nerve and superior ulnar collateral artery
Can use a posterolateral approach this increases risk of injury to radial nerve triceps
tendon
Do not confuse a olecranon bursitis with a joint effusion
Do not insert needle in skin that appears infected
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Fluid Analysis
Normal fluid contains: Electrolytes, glucose, uric acid, albumin,
globulins, mucin, blood cells, debris Results can be broken down into these parts: 1)normal 2) traumatic 3) inflammatory 4)infected
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TABLE WITH VALUES
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Post Procedure Treatment
Ace wrap Pain Medications Follow up with ortho s/s infection to prompt return
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Chart Documentation
Indication for test Informed consent obtained Steps to the procedure Amount and color of fluid removed How was it tolerated? Any immediate complications? Follow up discussed
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PROCEDURE REVIEW