Ortho Oracle - orthopaedic operative atlas

Cephalothin/Keflin

– First Generation Ceph – 1-2gm q4hr IV or 125mg/kg/4-6hr,t1/2=40min;Inject; – Decrease dose with renal failure; – 60-70 % of dose will be excreted in urine (w/ nl R F(x)) – Contra with cephalo allergy, caution with penicillin allergy; – Good diffusion from blood into CSF only with inflammation;     – Note: Ratio of … Read more

Cephradine/Velacef

Adult: 0.5 gm PO q6hr Good diffusion from blood into CSF only with inflammation; 80-95 % of dose will be excreted in urine (w/ nl R F(x))

Central stenosis

– Discussion:     – central stenosis produces compression of the thecal sac in contrast to lateral stenosis which involves compression of individual            nerve roots;     – may be congenital (idiopathic or developmental in achondroplastic dwarfs) or acquired;     – acquired stenosis:            – due to degenerative hypertrophic facets … Read more

Central Venous Catheterization

– See:       – Jug wave pattern       – CVP       – Swan Ganz       – Internal Jugular Vein Approach       – Subclavian approach Catheter-related sepsis in patients on intravenous nutrition: a prospective study of quantitative catheter cultures and guidewire changes for suspected sepsis. Hickman catheter … Read more

Central Venous Pressure

Discussion rapid fluid infusion should be slowed when right atrial or central venous pressure reaches 12 to 15 mm Hg. in most patients, when atrial pressures are approximately 15 mm Hg, further increases do not seem to increase Cardiac Output; thus, when central venous or right atrial pressure is less than 6 mm Hg augmentation … Read more

Cephalexin/Keflex

– See: first generation ceph – Discussion:     – adult: 1-4 gm/day PO given in 4-6 hr intervals; Max 4gm per 24 hrs;     – 250 to 500mg PO q6hr for UTI; t1/2=1hr;     – may give with Probenicid w/ osteomylitis for 2-4wks IV;     – contra with cephalo allergy;   … Read more

Cephalosporins

  First Generation:           Cefadroxil (Duricef, Ultracef)           Cephalothin (Keflin)           Cephapirin  (Cefadyl)           Cephalexin (Keflex)           Cephradine  (Velocef, Anspor)           Cefazolin (Ancef, Kefzol)   Second Generation         … Read more

Central Cord Syndrome

– Discussion: – most common incomplete cord lesion – frequently associated w/ extension injury to osteoarthritic spine (cervical spondylosis) in middle aged person who sustains hyperextension injury; – cord is injured in central gray matter, & results in proportionally greater loss of motor function to upper extremities than lower extremities w/ variable sensory sparing; – Anatomy: – fibers responsible … Read more

Cement Mixing Technique for TJR

– See: Addition of Antibiotics to Cement – Discussion:     – full discussion of technique for cementing femoral stems     – mixing under vacuum reduces retained air & incr cement strength;     – typically 2 bags are needed;     – slower mixing of cement over a shorter time decreases air voids within cement and … Read more