. The clinical study of blood-pressure : a guide to the use of the sphygmomanometer in medical, surgical, and obstetrical practice, with a summary of the experimental and clinical facts relating to the blood-pressure in health and in disease . s. Operation by Dr. Howard Collins. Observation by Dr, Chapin. Severe manipulation of large mixed or sensory nerves, asin forced retraction, the separation of firmly fixed tumors,and other procedures requiring considerable traction, maycause a sharp fall in blood-pressure. In Oriles experience thiswas especially pronounced when the superior laryngeal ner
. The clinical study of blood-pressure : a guide to the use of the sphygmomanometer in medical, surgical, and obstetrical practice, with a summary of the experimental and clinical facts relating to the blood-pressure in health and in disease . s. Operation by Dr. Howard Collins. Observation by Dr, Chapin. Severe manipulation of large mixed or sensory nerves, asin forced retraction, the separation of firmly fixed tumors,and other procedures requiring considerable traction, maycause a sharp fall in blood-pressure. In Oriles experience thiswas especially pronounced when the superior laryngeal nerve ^268 BLOOD-PRESSURE IN SURGICAL CONDITIONS was injured. A reflex slowing of the heart coincided. Thesame effect was produced by irritation of the laryngeal mu-cous membrane in animals, and operations on the larynx arefrequently accompanied by dangerous shock. Kapsammerreports a fall from 110 mm. to 40 mm. (G.), with profuse sweat-ing, due to traction on the sciatic nerve during an operation forosteomyelitis of the femur. Section of large nerve-trunks alsohas a serious depressor effect, and may lead to grave hypoten-sion. Cushing, and Crile, both report such an occurrence inoperations, involving division of the brachial plexus. PULSE. â Laparotomy (appendectomy). (Cooks sphygm. 5 cm.) Initial etherization rise in blood-pressure. Primary rise in blood-pressure from peritoneal irritation. Secondary fall in blood-pressure from continued peritoneal irritation, coincident withsplanchnic engorgement, and without change in pulse-rate. (From Cook and No. III.) ^ According to Crile, little variation of blood-pressure attendsoperations upon bone. Fig. 68 shows such a case. In themore extensive external operations, such as the complete Hal-stead operation for cancer of the breast, Cushing found that t/. Name. ami (ia-rck /?. A«aeStt«Sia- (jT»eT^atioT> , Blood Rate. a oi o6 ? 9 /5 S a,v i? 3o 33 36 39 Ma. fAS ^â )
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectbloodpr, bookyear1904
