Study Notes

Patient Factors Age: Younger patients have better recovery potential Health status: Diabetes, smoking impair healing Nutritional status: Adequate protein, vitamins essential Compliance: Follow-up and protection important Injury Factors Mechanism: Sharp cuts better than crush injuries Timing: Earlier repair generally better Location: Proximal injuries may have better outcomes Associated damage: Soft tissue trauma affects healing Surgical …

  Basic Properties of Gases A.    Dalton's Law of Partial Pressures 1.    partial pressure - the "part" of the total air pressure caused by one component of a gas             Gas            Percent            Partial Pressure (P)     ALL AIR   &nbsp…

CHEMICAL AGENTS Chlorine and iodine are most useful disinfectant Iodine as a skin disinfectant and chlorine as a water disinfectant have given consistently magnificent results. Their activity is almost exclusively bactericidal and they are effective against sporulating organisms also.  Mixtures of various surface acting agents with iodine are known as iodophores and these are used for the sterilization of dairy products. Apart from chlorine, hypochlorite…

Mechanical properties 1.  Resolution of forces Uniaxial (one-dimensional) forces-compression, tension, and shear Complex forces-torsion, flexion. And diametral 2. Normalization of forces and deformatations Stress  Applied force (or material’s resistance to force) per unit area Stress-force/area (MN/m2) Strain Change in length per unit of length because of force Strain-(L- Lo)/(Lo); dimensionless units 3. Stress-strain…

Bile contains: bile acids. These amphiphilic steroids emulsify ingested fat. The hydrophobic portion of the steroid dissolves in the fat while the negatively-charged side chain interacts with water molecules. The mutual repulsion of these negatively-charged droplets keeps them from coalescing. Thus large globules of fat (liquid at body temperature) are emulsified into tiny droplets (about 1 µm in diameter) that can be more easily digested and absorbed. …