A complete handbook for the sanitary troops of the U S army and navy . les for the relief of oedema. The skin and needles are sterilized, and the former protected withgauze while the fluid is draining. Aspiration consist in the withdrawal of fluid from a cavity whichmay be the abdomen, thorax, or pericardium. Aspiration of the abdomen or paracentesis is usually done with atrocar and canula; after preparation as for any surgical operation,make a small incision in the skin and insert the trocar and canula. Aspiration of the chest is required by an accumulation of serumtherein known as hydrothora
A complete handbook for the sanitary troops of the U S army and navy . les for the relief of oedema. The skin and needles are sterilized, and the former protected withgauze while the fluid is draining. Aspiration consist in the withdrawal of fluid from a cavity whichmay be the abdomen, thorax, or pericardium. Aspiration of the abdomen or paracentesis is usually done with atrocar and canula; after preparation as for any surgical operation,make a small incision in the skin and insert the trocar and canula. Aspiration of the chest is required by an accumulation of serumtherein known as hydrothorax, or if purulent empyema; it is donewith an aspirator. MINOR OPERATIONS, CONTINUED 470 For aspiration of the pericardium an exploring syringe or hypo-dermic is used. Lumbar puncture is done for purposes of diag-nosis or to relievepressure in the spinal canal. The patient is brought to the edgeof the bed with his knees well drawn up and his head and shoulderswell bent forward to separate the vertebrae. The puncture isusually made between the fourth and fifth Fig. as8.—Washing Out the Stomach. First step Fig. 259.—Washing Out the step. Blood specimens are frequently required for (i) microscopicalexamination, (2) Haemoglobin estimates, (3) counts, and (4)cultures. For (i) and (2) a drop is taken from a needle puncture of thelobe of ear; for microscopical examination it is collected on a cleancover glass. For counts the blood is also taken from the ear-lobe, but witha special instrument known as the haemocytometer. For blood cultures about 10 Cc. must be taken from the medianbasilic vein at the head of the elbow. After the usual surgical pre-cautions, a ligature is bound about the arm above the elbow tightenough to cause the veins to swell up but not tight enough to stop 480 MINOR SURGERY the pulse; the h}])odermic needle is then pushed directly into thevein. The stomach tube is used to remove poisons from the stomach,to wash it out, and to introduce fo
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