[Heart arrhythmias in chronic respiratory failure due to chronic obstructive bronchopneumopathy: the incidence and correlations with nocturnal respiratory disorders].
The aim of this study was to assess: frequency and type of cardiac arrhythmias in patients with severe stable chronic obstructive lung disease (COLD) and chronic respiratory failure (CRF); diurnal or nocturnal predominance of the detected arrhythmias; prospective relationships between arrhythmias and nocturnal hypoxemic-hypercapnic episodes. All patients were examined with careful and complete medical history, chest roentgenogram, standard electrocardiogram, mono and bidimensional echocardiogram, respiratory function tests, arterial blood gases at rest, 24-hour dynamic electrocardiographic recording and, simultaneously, transcutaneous nocturnal monitoring of respiratory gases (TCNM). We studied 14 men: all complained of exercise-induced dyspnoea for 8 +/- 6 years; 10 of them reported usual nocturnal snoring. Respiratory function tests provided the following values (expressed in percentage compared with theoretical ones): vital capacity 58.6 +/- 15, forced expiratory volume/s 36 +/- 19, Tiffeneau index 60 +/- 19, Motley index 160 +/- 35, carbon monoxide diffusion capacity 48 +/- 26. Arterial blood gas analysis at rest resulted: PO2 47 +/- 4.5 mmHg, PCO2 49 +/- 7.9 mmHg, pH 7.38 +/- 0.3. Right ventricular diameter obtained with mono and bidimensional echocardiogram was 32 +/- 4.6 mm. Right pulmonary descending artery measured on chest roentgenogram was 23 +/- 3.8 mm. Nocturnal transcutaneous monitoring of respiratory gases showed mean PO2 of 40 +/- 9.7 mmHg and mean PCO2 of 75 +/- 19 mmHg. During night-time maximum percentage reductions of PO2 (36 +/- 17%) were measured.(ABSTRACT TRUNCATED AT 250 WORDS)
Scarduelli
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C
Divisione Pneumologica, Presidio Ospedaliero USL 47, Mantova.
Sella
D
D
Rosa
A
A
Belfanti
D
D
Buzzi
G
G
Guerra
G
G
Sturani
C
C
D000368:Aged; D001145:Arrhythmias, Cardiac / Q000175:diagnosis / Q000453:epidemiology* / Q000209:etiology; D001785:Blood Gas Monitoring, Transcutaneous; D002908:Chronic Disease; D002940:Circadian Rhythm; D015716:Electrocardiography, Ambulatory; D006801:Humans; D006935:Hypercapnia / Q000175:diagnosis / Q000453:epidemiology / Q000209:etiology; D000860:Hypoxia / Q000175:diagnosis / Q000453:epidemiology / Q000209:etiology; D015994:Incidence; D008173:Lung Diseases, Obstructive / Q000150:complications*; D008297:Male; D012129:Respiratory Function Tests; D012131:Respiratory Insufficiency / Q000150:complications* / Q000209:etiology; D013997:Time Factors
Aritmie cardiache nella insufficienza respiratoria cronica da broncopneumopatia cronica ostruttiva: incidenza e correlazioni con le turbe respiratorie notturne.