Search PubMed⌕ Search

Biomedical subjects

D D Tresch

Publications and source records attributed to D D Tresch.

At least 55 records · Page 3Linked to original sources

Relationship of long-term and acute-care facilities. The problem of patient transfer and continuity of care.

Approximately 17% of patients residing in an extended-care facility--which provides close physician-patient contact and strong affiliation with an acute-care hospital, although does not have the capacity for intravenous therapy--required admission to an acute-care hospital during a one-year period. The most common medical problem necessitating transfer to the acute-care hospital was an infectious process. Most infections were correctly diagnosed in the extended-care facility, but due to the inability to administer intravenous therapy, transfer was thought mandatory. The acute-care hospital stay was short, which is thought to reflect partially the close affiliation between the extended-care facility and acute-care hospital. Complications occurred while patients were in the acute-care hospital with 30% demonstrating new pressure sores upon their return to the extended-care facility. Repeated acute-care hospital admissions were not uncommon, usually occurring within a short period after the patient's return to the extended-care facility, and commonly related to the same medical disorder that caused the initial admission. Prognosis was poor in patients who required admission to the acute-care hospital and mortality rate increased to approximately 50% in patients requiring multiple admissions. It is concluded that an extended-care facility that provides a high level of physician-patient contact and a close affiliation with an acute-care hospital is advantageous in providing efficient and continual care for the elderly. Provisions for the administration of intravenous therapy might even increase the efficiency of such a facility.

Adult↗

Long-term survival after prehospital sudden cardiac death.

One hundred thirty-nine survivors of prehospital sudden cardiac death were followed after their hospital discharge. Eighty patients were studied with coronary angiography and cardiac catheterization; 34 of these underwent coronary bypass surgery. After a maximum follow-up of 105 months, 89 patients were still alive. The probability of survival at 6 months, 1 year, 2 years, 3 years, 4 years, and 5 years was 88%, 86%, 78%, 70%, 63%, and 59%, respectively. Of the 43 cardiac deaths, 37 (86%) were secondary to documented recurrent ventricular fibrillation or occurred suddenly. Twelve percent of the total population had recurrent ventricular fibrillation in the first year following the initial cardiac arrest, 16% within 2 years, and 22% within 3 years. Of the 37 survivors dying from recurrent ventricular fibrillation, 32% died within the first 3 months following hospital discharge, 46% in the first year, 64% within 2 years, and 78% within the first 3 years. Most survivors were capable of resuming normal activities after hospital discharge. Only 7% demonstrated permanent neurologic impairment. Sixty-eight percent of the patients who were employed at the time of their prehospital sudden cardiac arrest returned to full-time employment. In the subset of 34 surgically treated patients, there have been six (18%) cardiac deaths. Four of these deaths were related to recurrent ventricular fibrillation, with one of these deaths occurring in the immediate postoperative period. The other three deaths related to recurrent ventricular fibrillation occurred 36 months (two deaths) and 49 months following the initial prehospital cardiac arrest.

Adolescent↗

Left ventricular performance after mitral reconstruction for mitral regurgitation.

Depressed left ventricular performance is often observed after mitral valve replacement for mitral regurgitation and is generally attributed to increased impedance to left ventricular ejection. We analyzed preoperative and postoperative catheterization data in 10 of 18 patients who underwent mitral reconstruction with preservation of the native valves and found a significant (p less than 0.05) fall in left ventricular end-diastolic volume index (from 143 +/- 39 to 84 +/- 21 ml/m2) and end-systolic volume index (from 50 +/- 24 to 32 +/- 12 ml/m2), with no significant change in ejection fraction (0.66 +/- 0.1 versus 0.62 +/- 0.1). These findings contrast with studies reported by others in comparable patients who had mitral valve replacement with no improvement in volume indices and a decline in ejection fraction postoperatively. We suggest that some of the left ventricular dysfunction observed after mitral replacement may be due simply to excision of the native valve. Mitral repair retains the tethering effect of chordal attachments and may thus prevent postoperative left ventricular dilatation and moderate the increase in wall stress that results from increased impedance to left ventricular ejection.

Adult↗

Out-of-hospital pulmonary edema: diagnosis and treatment.

Sixty-two patients diagnosed by paramedics as having acute cardiac pulmonary edema out of the hospital were studied. The paramedic prehospital diagnosis as confirmed by an emergency physician, chest film, and hospital admission evaluation was correct in 55 of 62 patients (89%). In the group with acute cardiac pulmonary edema, 64% demonstrated cardiac dysrhythmias, including cardiac arrest, prior to the patient's hospitalization. Therapy administered by the paramedics was beneficial in that most patients had improved on arrival at the hospital. Six of the 10 patients (60%) sustaining cardiac arrest were successfully resuscitated. Acute cardiac pulmonary edema occurring outside the hospital is commonly associated with significant complications, including life-threatening arrhythmias. Well-trained paramedics are capable of quickly diagnosing and treating acute cardiac pulmonary edema outside the hospital setting.

Adult↗

Misdiagnosis of pericardial cyst by echocardiography and computed tomography scanning.

We saw a patient who had clinical features of right-sided heart failure. Echocardiography and computed tomography findings were incorrectly interpreted as demonstrating an intracardiac mass. At surgery, a pericardial cyst externally compressing the right ventricular cavity was found. We conclude that, although noninvasive tests may play a valuable role in evaluating intracardiac masses, interpretation may be difficult and misdiagnoses are possible.

Aged↗

Evaluation of postresuscitation left ventricular global and segmental function by radionuclide ventriculography in sudden coronary death survivors of prehospital cardiac arrest: Correlation to subsequent short-term prognosis.

Previous data have shown that patients with significant left ventricular (LV) dysfunction, marked abnormalities in resting hemodynamics, and multiple vessel coronary artery disease (CAD) are at increased risk for sudden cardiac death. However, in-hospital assessment of ventricular function in the early postresuscitation period of out-of-hospital cardiac arrest has not been evaluated and related to short-term outcome. By using bedside radionuclide ventriculography (RNV) we evaluated LV ejection fraction (LVEF) and wall motion in 36 nonconsecutive patients within 24 hours of their episode of out-of-hospital cardiac arrest. There were 24 men and 12 women with mean age of 62.3 years (range 21 to 85 years). Total mortality of the entire group was 38.8% at 4 weeks. Eighteen patients had LVEF less than 0.30 and 18 had LVEF greater than 0.30. Mortality in the low LVEF group was 55.5% at 4 weeks versus 22.2% in patients with LVEF greater than 0.30 (p less than 0.05). Patients with normal LV wall motion had no short-term mortality (none of seven), while patients having abnormal LV wall motion had a significantly higher short-term mortality (14 of 29) (p less than 0.05). We conclude that out-of-hospital cardiac arrest survivors have a high incidence of severe LV dysfunction in the early postresuscitation period and that a significantly higher early mortality is seen in the group with LVEF less than 0.30. In addition, abnormalities of LV wall motion by RNV examination demonstrated poorer prognosis in the first 4 weeks than patients with normal LV wall motion.

Adult↗

Long-term follow-up of survivors of prehospital sudden coronary death.

Fifty-two survivors of prehospital sudden coronary death (SCD) were studied with angiography and cardiac catheterization. Coronary bypass surgery (CAB) was performed and combined with medical therapy in 24 patients and 28 patients were treated with medical therapy alone. Severity of coronary artery disease (CAD), left ventricular function, and clinical characteristics are described in the surgical and medical groups. Most patients had at least two-vessel CAD and left ventricular dysfunction was common. Nineteen of the 24 surgical (79%) and 17 of the 28 medical patients (60%) had a primary dysrhythmia without an associated acute myocardial infarction (MI) as the cause of their SCD. After a maximal follow-up of 80 months (mean 38.2 months in surgical group, 32.2 months in medical group), there have been 12 deaths. Eight of the 10 cardiac deaths occurred in patients showed initial SCD was related to ventricular fibrillation (VF) not associated with acute MI. Four of these 10 deaths were in the surgical group and six were in the medical group. Two surgical patients died in the early postoperative period; the other two died from recurrent VF 36 and 48 months after SCD. No perioperative or postsurgical MIs have occurred and only two patients have angina. In the medical group, five of the six deaths were caused by recurrent VF. Twelve patients have symptoms: angina in eight, heart failure in five and myocardial infarction in three. Nine of the 12 surgical patients (75%) who were employed before their SCD are still employed, while seven of 15 medical patients (47%) are employed. We conclude that the majority of survivors of prehospital SCD have severe CAD, although an associated acute MI at the time of SCD is uncommon. Coronary bypass surgery can be successfully performed in many of these patients and most are asymptomatic after surgery. The long-term results appear encouraging, although further studies are necessary to confirm these results.

Aged↗

Survivors of prehospitalization sudden death. Characteristic clinical and angiographic features.

Cardiac catheterization and angiography were performed in 57 survivors of prehospitalization sudden cardiac death (PSD). Fifty-two had coronary artery disease. In most, the disease was severe, with almost universal involvement of the anterior descending artery. Associated left ventricular dysfunction was common. Although the majority of survivors had severe coronary artery disease, only 16 had an acute myocardial infarction associated with the PSD event and the extent of their coronary artery disease generally was less severe than those who died suddenly of an arrhythmia and no myocardial infarction. Cardiovascular symptoms of long duration prior to sudden death were not uncommon, although sudden death was the initial cardiac symptom in some. Others had crescendo angina as the initial symptom, and a few had a clinical history compatible with Prinzmetal's angina. Although severe coronary artery disease was the most common underlying abnormality, PSD may be an expression of multiple causes.

Adult↗

Mitral valve prolapse in the elderly.

This study included 40 patients over 60 years of age with echocardiographic findings of mitral valve prolapse (MVP). Most of these patients were unaware of any cardiac disorder until the time of echocardiography. In the majority, the clinical manifestations were benign, and the duration of symptoms variable. Congestive heart failure (CHF) was noted in 10 patients (25 percent) who were unaware of having any cardiac disorders until the onset of their symptoms. In 5 patients (4 with CHF and 1 with endocarditis), surgical replacement of the prolapsed mitral valve was necessary. Endocarditis was present in 4 patients (10 percent), none of whom had been instructed in the prophylactic use of antibiotics. The physician's awareness of mitral valve prolapse in the elderly patient is important, since the disorder may not be as benign in aged patients as in younger ones, and life-threatening complications may occur.

Aged↗

Ovarian (corpus luteum) hemorrhage during anticoagulation therapy.

Corpus luteum hemorrhage is a complication of long-term anticoagulant therapy that has rarely been reported in the literature. Within 16 months, we saw six cases in which young women taking anticoagulants to prevent clotting of prosthetic heart valves suffered corpus luteum hemorrhages. Diagnosis was difficult and delayed. Medication stopped the bleeding in three patients; bilateral salpingo-oophorectomy was necessary in the remaining three. Our patients had great difficulty controlling their anticoagulant therapy and had histories of previous bleeding episodes. We believe corpus luteum hemorrhage may become more common as more premenopausal women undergo cardiac valvular surgery.

Adult↗

Management of sudden coronary death.

Twenty-three survivors of out-of-hospital sudden coronary death (SCD) have been followed subsequent to initial hospitalization, cardiac catheterization and coronary angiography, and ultimate coronary revascularization (11 patients) or medical treatment (12 patients). All were treated at the Milwaukee County Medical Center. History of previous myocardial infarction (10 patients) and predominance of triple coronary artery disease (20 patients) with associated ventricular dysfunction (21 patients) demonstrated advanced coronary disease in both groups. Selection for revascularization (mean, 3 grafts per patient) was not randomized, but was based on precarious coronary anatomy and was reinforced by post-SCD ventricular dysrhythmias and angina. During an average follow-up of 13 months, there were 2 perioperative surgical deaths (1 recurrent SCD) and 3 medical deaths (2 recurrent SCDs), giving a mortality rate of 22%. This is an improvement over reported post-SCD natural history and may support a policy of offering revascularization to all SCD patients who have precarious coronary anatomy.

Adult↗

An effective prehospital emergency system.

An Emergency Medical Services (EMS) system with the capabilities of rapid response, patient extrication, basic life support, advanced life support, radio communication, and transportation provides appropriate care for a wide spectrum of injured and acutely ill patients. The validity of the selective dual response system in demonstrated by: 1) rapid provision of basic life support, 2) appropriate availability of advanced life support, 3) conservation of educational and fiscal resources, and 4) the enchancement of knowledge and manipulative skill expertise of relatively few, but busy, EMT-paramedics who are provided close medical supervision and support.

Allied Health Personnel↗

Multiple cardiac injuries secondary to a single stab wound.

A case of multiple cardiac injuries secondary to a single stab wound is described. The extent of the injury was not fully appreciated at the initial surgical intervention and typical clinical manifestations were delayed in appearance. Cardiac catheterization was necessary to confirm the correct diagnosis. After the correct diagnosis was made, surgical repair was successfully performed.

Adult↗

Problems with balloon-tipped stylet pacemaker catheters.

Balloon-tipped stylet pacemaker catheters have two intraluminal stylet-related limitations that warrant extreme caution in their use. The first limitation involves manipulation of the stylet inside the catheter and appears to be a consequence of the angulation made by the catheter in the right atrium; the second limitation is a complication involving actual in vivo fracture of the stylet and is presumably related to tapering of the stylet at a point of stress in the right atrium. Although these pacemaker catheters have distinct advantages, the problem arising from their use cannot be ignored. Until modification can be made to resolve these problems, this catheter must be used with extreme caution.

Aged↗