# ECG of the Week – July 17th

The following ECG is from a 56-year-old lady who presented with chest pain and dyspnoea.

Her observations are as follows BP 90/55, RR 28, Sats 90% RA, Temp 37.7

Interpret her ECG, provide your differential diagnosis and rationale.

# Lab case 445

85 year-old-woman with fracture of right neck of femur. Her blood gases showed the following:

PH = 7.51

pCO2 = 59.5 mmHg

pO2 = 70 mmHg

HCO3 = 47.5 mmol/L

# Lab case 436

58-year-old lady with history of obstructive sleep apnoea presented with Syncope. Her venous blood gases showed the following:

PH = 7.391

pCO2 = 57 mmHg

# Lab case 431 interpretation

Question 1:

PH = 7.58, that is severe alkalaemia.

pCO2 = 20 mmHg, so we have respiratory alkalosis.  Next we need to calculate the compensation. From the story, the condition is most likely acute.

# Lab case 425

51 year old man, recently returned from the middle east, presented with shortness of breath. His CXR was normal. His arterial blood gases showed the following:

PH = 7.51

PaCO2 = 28 mmHg

PO2 = 56 mmHg

# Lab case 422

75 year old lady presented to the emergency department after a fall. In ED she was found to be slightly febrile with blood pressure of 95/55. Part of the investigation performed was LFT   and it showed the following:

Bilirubin = 101  umol/L     (< 16)

# Lab case 419

32-year-old man presented to ED with an exacerbation of his asthma. On 3L O2, his arterial blood gases showed the following:

PH = 7.32

PO2 = 101  mmHg

# Lab case 418

65 year old lady with history of progressive supranuclear palsy presented with aspiration pneumonia. Her venous blood gases showed the following:

PH = 7.315

pCO2 = 48 mmHg

pO2 = 48 mmHg

# Lab case 415

A 45-year-old man presents with vomiting and numbness on his fingers . He has CML and he is on chemotherapy. His blood biochemistry showed the following:

Na = 130 mmol/L

K = 6.8 mmol/L

# Lab case 410

80 year old lady presented with recurrent vomiting after colonoscopy. Her venous blood gases showed the following:

PH = 7.56

pCO2 = 34 mmHg