An arterial blood gas (ABG) measures three components: pH, pCO2, pO2. All the other numbers on a blood gas are calculated. The bicarbonate (HCO3) value is calculated based on the measured pH and the measured pCO2, using the Henderson-Hasselbalch equation. The base excess (BE) is calculated using a similar equation.BG-A is a normal blood gas in room air. ABG-B (pH 7.20, pCO2 60, pO2 70, bicarb 24, BE -3) shows a patient with acute respiratory failure. The pH is less than 7.40 which means that the patient has an acidosis.
Himmler was searched and two cyanide phials were found on him and removed. It is said that as an Army doctor was about to give Himmler a more thorough examination, he bit on a cyanide capsule embedded in one of his teeth and died as a result. However, research done by Martin Allen questions this traditional story.
During 1940 the centres at Brandenburg, Grafeneck and Hartheim killed nearly 10,000 people each, while another 6,000 were killed at Sonnenstein. In all, about 35,000 people were killed in T4 operations that year. Operations at Brandenburg and Grafeneck were wound up at the end of the year, partly because the areas they served had been cleared and partly because of public opposition. In 1941, however, the centres at Bernburg and Sonnenstein increased their operations, while Hartheim (where Wirth and Franz Stangl were successively commandants) continued as before. As a result, another 35,000 people were killed before August 1941, when the T4 programme was officially shut down by Hitler.