NaOH + Na2HPO4 --> Na3PO4 + H2O (aka tribasic sodium phosphate) Of course, once all the hydrogen is consumed there is no further reaction with sodium hydroxide. In general, adding sodium hydroxide to a solution of any of the sodium phosphates will change the pH.
Preoperative care. (Redirected from Pre-op) Preoperative care refers to health care provided before a surgical operation. The aim of preoperative care is to do whatever is right to increase the success of the surgery. At some point before the surgery the health care provider will assess the fitness of the person to have surgery.
READER QUESTIONS: Pre-Op and Post-Op--1 Consult or 2? - Published on Tue, May 29, 2007 Question: A patient with chronic obstructive pulmonary disease (COPD) is scheduled for a lobectomy. The thoracic surgeon requests the patientâs pulmonologist to provide the preoperative risk assessment. The pulmonologist uses ICD-9 codes for âPre-op--V72.82â and âCOPD without exacerbation--491.20.â.