Diseases of the chest and the principles of physical diagnosis . Slow hiah tension pulse (arteriosclerosis). Pulsus irregularis perpetuus (auricular fibrillation). Irregular both as to time and volume. Fig. 131. 11 162 THE EXAMINATION OF CIRCULATORY SYSTEM It may occur pathologically: (1) At the extremes of life during inspiration. (2) During inspiratory dyspnea—croup—slow inspiration, high negative intrathoracic pressure. (3) In cases of ad-hesive (mediastino) pericarditis. Respiratory traction resulting from mediastinaladhesions, is brought to bear on some of the large vessels. (It may be a
Diseases of the chest and the principles of physical diagnosis . Slow hiah tension pulse (arteriosclerosis). Pulsus irregularis perpetuus (auricular fibrillation). Irregular both as to time and volume. Fig. 131. 11 162 THE EXAMINATION OF CIRCULATORY SYSTEM It may occur pathologically: (1) At the extremes of life during inspiration. (2) During inspiratory dyspnea—croup—slow inspiration, high negative intrathoracic pressure. (3) In cases of ad-hesive (mediastino) pericarditis. Respiratory traction resulting from mediastinaladhesions, is brought to bear on some of the large vessels. (It may be a unilateralphenomenon.) If enfeeblement or disappearance occurs during expiration it iscalled Riegels pulse. The paradoxical pulse has little if any pathologic pathological paradoxic pulse is generally assumed to be due to constriction ofsome of the large vessels by mediastinal adhesions. The paradoxic venous pulse—•filling of the veins during inspiration—has a similar genesis. CHAPTER XIV INSTRUMENTAL METHODS, BLOOD-PRESSURE ESTIMATION Pulse tension or blood-pressure is best e
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