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[Clinical and physiological features of chronic pulmonary emphysema with paroxysmal dyspnea attacks masquerading as bronchial asthma--improvement of respiratory function after combination therapy of intravenous aminophylline and subcutaneous epinephrine following daily oral administration of prednisolone].

Cases of chronic pulmonary emphysema accompanied with paroxysmal dyspnea attacks are often misdiagnosed as bronchial asthma. These patients repeatedly fall into a state of life-threatening respiratory failure. We must make an accurate diagnosis of emphysema to provide care of them. To clarify the possibility of doing this, we investigated the clinical and physiological features (primarily respiratory function) of emphysema. We observed twenty-five patients with chronic pulmonary emphysema and with chronic bronchial asthma, previously confirmed by selective alveolo-bronchogram (SAB); this technique reliably diagnoses emphysema, but often induces dyspnea attacks due to the stimulation resulting from intratracheal and intrabronchial procedures. In eight patients, chronic pulmonary emphysema was accompanied by an attack of paroxysmal wheezing and dyspnea; chronic pulmonary emphysema with wheezing (WPE). In eight other patients, chronic pulmonary emphysema was present without such attacks; usual pulmonary emphysema (UPE). In the final nine patients, chronic bronchial asthma (CBA) was present, while emphysema was ruled out by means of SAB. In all patients, we measured respiratory function before and after the combination therapy of intravenous aminophylline and subcutaneous epinephrine, which followed daily oral administration of prednisolone (PAE-treatment). In the WPE group, significant increases in measurement of various respiratory functions, including VC, RV, RV/TLC%, FVC, FEV1.0, PFR and V75 (p less than .05 excluded in FEV1.0 and PFR were p less than .01), were found after the PAE-treatment, compared with the values revealed before the treatment. In the UPE group, there were few changes PAE-treatment, compared with the values revealed before the treatment.(ABSTRACT TRUNCATED AT 250 WORDS)

Administration, Oral↗

A smoker with paroxysmal dyspnea.

A 40-year-old woman who had experienced recurring episodes of dyspnea for 28 years presented to the emergency department with increasing shortness of breath, wheezing, and dry cough of three days' duration. She had been seen at another hospital shortly after symptoms began but left against medical advice. She did not have fever, chills, or other symptoms of upper respiratory infection.

Adult↗

[Paroxysmal nocturnal dyspnea as a severe expression of the pacemaker syndrome].

Single-chamber ventricular pacing remains a frequent pacing method for symptomatic bradyarrhythmias. VVI pacing is effective in maintaining an acceptable ventricular rate, preventing severe bradycardia. However it may cause many important symptoms as a consequence of loss atrio-ventricular synchrony. Pacemaker syndrome (i.e. symptoms and signs caused by inadequate timing of atrial and ventricular contractions) may range in severity from vague pacing awareness to congestive heart failure. This event may be related more to retrograde ventricular-atrial conduction than to the absence of atrio-ventricular synchrony. We report 2 cases of VVI pacing complicated by nocturnal dyspnea (sign of congestive heart failure) as severe manifestation of pacemaker syndrome. By implantation of dual-chamber pacemaker, atrio-ventricular synchrony was restored, nocturnal dyspnea disappeared and has not recurred during clinical follow-up (12 and 4 months respectively for the first and second case.

Aged↗