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Biomedical subjects

A G Marrangoni

Publications and source records attributed to A G Marrangoni.

24 records · Page 2Linked to original sources

Swan-Ganz catheter induced pulmonary hemorrhage.

In over 3500 consecutive open heart procedures using Swan-Ganz catheterization at our institution, we have experienced three major pulmonary artery injuries secondary to this procedure. Pulmonary artery hemorrhage is a rare but frequently fatal complication and a mortality rate as high as fifty percent has been reported. In two of these cases, major retraction of the heart was needed for adequate exposure of the cardiac pathology. The Swan-Ganz catheter inadvertently was advanced into the wedge position for prolonged intervals of time, and periodic overdistention of the balloon occurred. The third case occurred in the cardiac catheterization laboratory. The need for aggressive surgical approach has been demonstrated. The authors have recommended steps to be taken when massive hemoptysis occurs and Swan-Ganz catheter perforation of the pulmonary artery is suspected. Re-evaluation of the "routine" use of the Swan-Ganz catheter may be necessary and overutilization may be a distinct possibility. When the use of this catheter is deemed appropriate, a more exact positioning of the distal portion of the catheter is mandatory if pulmonary artery perforation is to be avoided.

Aged↗

The direct surgical management of lesions of the high internal carotid artery.

The diagnosis and surgical management of non-penetrating high cervical internal carotid injuries continues to be a major problem. The increased incidence of these lesions is due to the escalation of motor vehicular trauma involving multi-system injuries as seen in our Trauma Unit. Carotid angiographic studies are necessary for diagnosis when there is an index of suspicion at time of injury. There have been varied opinions concerning the best treatment due to the difficulty of direct access to the para-mandibular, para-antantoxial segment of the internal carotid artery. Two cases of post-traumatic aneurysms have been discussed and an innovative surgical technique is demonstrated with excellent results. This technique can be utilized in other lesions of the high carotid artery such as intimal flaw and/or dissection of this vessel. The primary indications for surgical intervention are propagation of emboli originating in the aneurysmal sac and intolerance of head noise to the patients (not seen in our patients).

Adolescent↗