pattern (P-wave amplitude > 2.5 mm) in leads II, III, avF;
In this study, the patient with P-pulmonale
change in ECG had worst prognosis.
The ECG parameters considered for computation were: P-wave axis > [60.sup.0], P-pulmonale
, QRS axis > [90.sup.0], lead V1-R/ S > 1, lead V6-R/ S > 1, clockwise rotation, intrinsicoid deflection and ST-T changes.
Electrocardiogram showed a huge P-pulmonale
and right ventricular hypertrophy with secondary ST-T changes, and right axis deviation (Fig.
Among 72 patients, 43 patients were smokers and 24 patients' ECGs showed P-pulmonale
. 41 patients had right axis deviation, 7 had R wave height in lead V1 more than 5 mm (Indicating they had severe right ventricular hypertrophy or pulmonary hypertension).
pattern (P wave >2.5 mm) in leads II, III, avF; b.
pattern (P wave >2.5mm) in leads II, III, avF.
ECG evidence of P-pulmonale
in 51%, right axis deviation in 45% and RVH in 39% of patient is comparable with findng of S.
The manifestation of tall and peak waves in standard lead II, III and avF in association with right axis deviation of P wave, constitute a P-pulmonale
Carid and Wilcken found incidence of P-pulmonale
in 15.5% of their COPD patients, while Scott et al(20) and Pinto et al(21) recorded same incidence of 32.7% in their studies.
34 % patients had p-pulmonale
, 18% patients had the total p wave amplitude in 2, 3, avF more than 9 mm, this is important because this one of the indication for life long oxygen therapy.
Electrocardiograph (ECG) showed a P-Pulmonale
, T wave inversion in V1-V5 and Right Ventricular Hypertrophy (RVH).