Hyperventilation in Anxiety Attack

Report

Sinus tachycardia 144/min

Right axis deviation +95o, borderline for age

Right atrial abnormality

Late transition

Nonspecific ST/T changes

Comment:

The ECG is also consistent with cor pulmonale. Tachycardia per se increases the amplitude of the P wave, with attendant PTA displacement; du reste, hyperventilation can cause practically any ST/T changes.

The PaO2, on ‘room air’ was 111 mmHg, PCO2 14 and the pH 7.56. The chest X-ray and thyroid function tests were normal. Reassurance and a paper bag cured her.

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