respiratory rate of 6 breaths per minute and pinprick pupils
A 56-year-old man was found unconscious at home with a respiratory rate of 6 breaths per minute and pinprick pupils. An ambulance was called and the paramedics administered some naloxone. On arrival to A&E his ABG showed the following (not on oxygen at the time of the ABG):
PaO2: 7.9 (11-13 kPa)
pH: 7.31 (7.35 – 7.45)
PaCO2: 7.1 (4.7-6.0 kPa)
HCO3-: 22 (22-26 mEg/L)
BE: +1 (-2 to +2)
WHAT DOES THE ABG SHOW? WHAT IS THE LIKELY DIAGNOSIS, GIVEN THE PATIENT’S HISTORY AND THE ABOVE RESULTS?