The Hip - book

Myelograms

– Metrizamide;     – water soluble contrast agent that is absorbed by the body, enhances definition of structures;     – it is meningeal irritant, but has not been associated w/ arachnoiditis; – Clinical Reactions:     – nausea, vomiting, confusion, and seizures;     – side effects are related to dehydration, phenothiazines, tricyclics, and … Read more

Myelodysplasia

– Discussion:     – disorder of spinal cord development/closure or secondary rupture of developing cord secondary to hydrocephalus;     – term myelodysplasia includes:           – spina bifida occulta           – meningocele: sac without neural elements protruding through defect;           – myelomeningocele; … Read more

Mydazolam/Versed

– Discussion:     – for preoperative sedation; impairment of memory of perioperative events;     – sedation for procedures, short acting benzodiazepine:     – versed is 3 to 4 times more powerful per mg. than valium     – may dilute injection in D5W, NS, or LR; – Conscious Sedation:     – … Read more

Mycoplasma Pneumoniae

erythromycin  Tetracycline – Signs and Symptoms of:        – HA        – Malaise        – Fever        – Cough (bothersome) – Rales, Rhonchi, Wheezes        – Consolidation rare; – Significant CXR features: Unilateral Broncho Pneumonia; – Isolation of M. Pneumonia from Sputum or a 4 … Read more

Myasthenic Syndrome (Eaton-Lambert Syndrome)

– Discussion:     – rare disease usually found in association with occult neoplasms of the lung or other organs;     – defect lies in the release of acetylcholine from prejunctional axon terminals;     – main danger to patients is the manifestation of the underlying neoplasm; – Clinical Findings:     – fluctuating weakness … Read more

Myasthenia Gravis

– Discussion:     – most common neuromuscular junction defect;     – results from damage to postsynaptic acetylcholine receptor sites;     – more common in young women & older adults of both sexes;     – diff dx:           – myathenic syndrome:           – ALS … Read more

Musculoskeletal Labs

  – Alkaline Phosphatase   – Antinuclear AB (ANA)    – C-Reative Protein    – Erythrocyte Sedimentation Rate   – Hypercalcemia    – Rheumatoid Factor    – Hyperuricemia   – Serum Electrophoresis    – antineutrophil cytoplasmic antibody   – rapid plasma reagin   – cryoprotein   – serum immunofixation   – lyme antibody   – … Read more

Musculoskeletal Considerations in Pregancy and Post Pregnancy

– Use of Medications in Pregnancy: – calcium supplementation – intra-articular steroids – note that intra-articular steroids may interfere w/ lactation in nursing mothers; – ref: The use of antirheumatic medication during pregnancy and in the puerperium. – Surgical Considerations: – positioning: – avoid supine positioning because of hypotensive effects from aortocaval compression by the … Read more

Musculocutaneous Nerve

– Discussion:     – derives from lateral cord (C5, C6):     – musculocutaneous nerve passes through coracobrachialis; between biceps &  brachialis, & becomes lateral antebrachial cutaneous nerve at elbow;     – it has only muscular branches above elbow & only sensory branches below;     – lesion of this nerve produces weakness of … Read more