GPT and pericardial effusion: Venous blood gas analysis and biochemistry results: (1a) at the primary care veterinarian, (1b) on admission, (1c) at the time of first clinical deterioration on the morning of day 2, (1d) prior to evacuation of pericardial effusion on day 2; AG, anion gap; ALAT, alanine aminotransferase.