General Surgery – fluid and electrolytes

  1. Hypovolemic shock is the most common shock
  2. Obstructive shock is due to decreased cardiac filling  as seen in cardiac tamponade, tension pneumothorax or massive pulmonary or air embolism
  3. In distributive shock, there is vasodilatation instead of vasoconstriction. This is seen in spinal injury, sepsis and anaphylaxis.