Splenectomy for hairy cell leukemia in pregnancy.

OBJECTIVE: Hairy cell leukemia is a rare hematologic malignant disease characterized by pancytopenia and splenomegaly. Its occurrence during pregnancy limits treatment with standard chemotherapeutic agents. A woman was found to have hairy cell leukemia and massive splenomegaly late in the second trimester. A review of the literature did not provide a carefully formulated treatment plan. It was believed that splenectomy (the historic therapy for hairy cell leukemia) would likely result in improved hematologic values and allow the pregnancy to progress. STUDY DESIGN: Case report with literature review. RESULTS: Preoperative laboratory studies revealed platelet count 65,000/mm3, hematocrit 28.6%, white blood cell count 4000/mm3, and hairy cell index 0.06 to 0.07. At 24 weeks' gestation, the patient underwent splenectomy with resolution of thrombocytopenia and normal progression of pregnancy without complication. Repeat cesarean section at 38 weeks produced a 2875 gm healthy male infant with Apgar scores of 9 and 9. CONCLUSION: If antepartum management of hairy cell leukemia is warranted, splenectomy is a safe and effective treatment option during the second trimester.

Fine needle aspiration of pancreatic fluid collections.

The complications of pancreatitis remain diagnostic and therapeutic challenges. Patients with simple pancreatitis, pancreatic necrosis, pseudocyst, noninfected fluid collection or abscess may all have similar clinical pictures. During the last decade computerized tomography (CT)-guided needle aspiration of peripancreatic fluid collections has been increasingly used as a diagnostic tool for pancreatic abscesses. This study reviewed the effectiveness of CT-guided needle aspiration of peripancreatic fluid collections at our institution in terms of diagnostic accuracy, correlation with eventual outcome, and safety. Charts of patients who underwent needle aspiration of de novo peripancreatic fluid collections over the past 2 years were reviewed. Thirty-five patients underwent 50 aspirations. Eleven patients (31%) had a positive aspirate culture; seven of these had a positive Gram's stain. There were no false positive Gram's stains but four false negatives. Twenty-four (69%) patients had negative aspirate Gram's stains and cultures. Patients with positive aspirate cultures were treated with antibiotics only (2), CT-guided drain placement (7), or surgical drainage (3). The mortality related to each of these therapeutic modalities was 50 per cent, 0 per cent, and 33 per cent, respectively. Of the 24 patients with negative aspirate cultures, five had no further treatment, 12 received antibiotics, and six underwent CT drain placement. All these patients survived. There was one false negative aspirate culture. This patient underwent delayed surgical drainage but expired. There were no major complications from CT-guided aspiration. CT-guided aspiration appears to be a safe and reliable method of diagnosing infection in peripancreatic fluid collections.(ABSTRACT TRUNCATED AT 250 WORDS)

Injuries to the ascending aorta, aortic arch and great vessels.

During the past decade (1977 to 1987), 46 patients with 51 arterial injuries to the ascending aorta, aortic arch and great vessels have been treated at our institution. There were 25 subclavian arterial, 17 common carotid arterial, five innominate arterial and four ascending aortic injuries. Sixteen (35 per cent) patients were hemodynamically unstable at admission and required immediate operative intervention. Two patients arrived in cardiac arrest, necessitating thoracotomy performed in the emergency room. Thirty (65 per cent) patients were hemodynamically stable and underwent emergent diagnostic angiography prior to arterial repair. Lateral or end to end arterial repairs were used in the majority. Two ascending aortic injuries required cardiopulmonary bypass. Forty-three of 46 patients survived. Prompt exploration in the unstable patient, diagnostic angiography in the stable patient and a systematic but flexible operative approach are the keys to the management of these potentially lethal injuries.

Suture technique in preventing dehiscence of prosthetic mitral valves.

To evaluate suture techniques for mitral valve replacement, 60 fresh porcine hearts were used to determine suture holding strength. Using four techniques (simple interrupted, figure-of-eight, and horizontal without and with pledgets), the anterior leaflet, the posterior leaflet, and the commissures were sutured. The free ends of the sutures were then attached to a force transducer, and tension was increased until disruption occurred. In the anterior leaflet, horizontal mattress sutures disrupted with significantly less force than the other techniques. Pledgets increased the holding strength of mattress sutures, but figure-of-eight and simple interrupted sutures had greater holding strength than sutures with pledgets, suggesting that the direction of the suture vs that of tissue fibers is critical. Histologic studies confirmed this point. The posterior leaflet exhibited less holding strength than the anterior leaflet for all suture techniques but did not demonstrate a superiority for any specific technique. The posterior leaflet is the problem area for suture disruption from the mitral anulus. We secure mitral prostheses with horizontal mattress sutures with pledgets around the entire anulus, placing them from the atrial side.

Thermodilution cardiac output studies as a cause of prosthetic valve bacterial endocarditis.

The injectate used for thermodilution cardiac output determinations is a potential source for direct bloodstream contamination, resulting in bacterial endocarditis after cardiac operations. An experiment simulating three techniques for obtaining injectate samples showed one of them to be clearly unacceptable.