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Biomedical subjects

E Inada

Publications and source records attributed to E Inada.

At least 19 recordsLinked to original sources

[Stress steroids].

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Adrenal Insufficiency↗

[Atrial pacing with the A-V paceport pulmonary artery catheter].

Atrial pacing is often necessary during cardiac surgery. A total of 20 patients undergoing cardiac surgery were atrially paced with either a multipurpose pulmonary artery catheter (PAC) or an A-V paceport PAC (n = 10 each). Atrial pacing was successful in all the patients before cardiopulmonary bypass. The output threshold was 4.2 +/- 0.7 mA for a multipurpose PAC and 3.8 +/- 0.7 mA for A-V paceport PAC. Atrial pacing with both PAC's was readily performed and useful during cardiac surgery.

Catheterization↗

Effect of labetalol or lidocaine on the hemodynamic response to intubation: a controlled randomized double-blind study.

Labetalol, a combined alpha 1- and nonselective beta-adrenergic blocking drug, was compared to lidocaine or saline to minimize the hypertensive and tachycardic response to intubation in a controlled randomized double-blind study in patients undergoing surgical procedures under general anesthesia. Forty adult patients were divided into four groups of 10 each: placebo (saline), lidocaine 100 mg, labetalol 5 mg, or labetalol 10 mg. The double-blind preparation was administered as an IV bolus just prior to induction and 2 min before the stimulus of laryngoscopy and intubation. Heart rate and blood pressure were measured at 1-min intervals for 2 min prior to induction of anesthesia and through 6 min following induction of anesthesia. Labetalol 10 mg prevented a rise in heart rate after intubation compared to patients who received placebo, lidocaine 100 mg, or labetalol 5 mg. The hypertensive response to intubation was similar in all four groups. Labetalol 10 mg IV just prior to induction of anesthesia is a safe and cost-effective means of preventing tachycardia but not hypertension in response to laryngoscopy and intubation.

Adult↗

[Usefulness and limitations of transesophageal echocardiography in anesthetic practice].

Transesophageal echocardiography (TEE) has been used as a monitor of cardiovascular function and as a diagnostic tool in anesthetic practice. TEE is the only available monitor to detect anatomical abnormalities such as of wall motion as well as valvular abnormalities. Doppler TEE has wider diagnostic functions. TEE is a very sensitive monitor to detect myocardial ischemia by recognizing wall motion abnormalities and loss of systolic wall thickening. Preload defined by left ventricular end-diastolic volume may not correlate with left ventricular end-diastolic pressure or pulmonary capillary wedge pressure (PCWP) when left ventricular compliance changes such as after coronary artery surgery. PCWP can be misleading when transmural pressure across cardiac chambers are undetermined such as in patients with cardiac tamponade or those on high positive end-expiratory pressure. In these situations, TEE is a powerful tool to link physiologic parameters and anatomy. TEE is also a very sensitive monitor to diagnose air embolism during cardiac surgery and neurosurgery in sitting position. There are, however, several shortcomings such as its cost, "too much sensitivity", requirement of some experience, interobserver variability, and so on. The computer-assisted on-line analysis would greatly augment usefulness of TEE. When these shortcomings are overcome, TEE would be one of the most important monitors in anesthetic practice.

Anesthesiology↗

IgA multiple myeloma coexistent with atypical adult T-cell leukemia.

We report a 65-yr-old male with adult T-cell leukemia (ATL) who developed multiple myeloma (MM) concomitantly. Skin lesions and peripheral leukocytosis were noted during the 5-yr observation period. There was abnormal lymphocytosis with indented or lobulated nuclei in the peripheral blood and in the bone marrow. The neoplastic cells reacted with monoclonal antibodies, OKT3, OKT4, OKIa1 and anti-Tac. His serum was positive for the antibodies to ATL-associated antigens. Human T-cell leukemia virus (HTLV) proviral DNA was detected in the leukemic cells. Thus, a diagnosis of ATL was made. There was IgA (k) paraprotein in his serum, and Bence-Jones protein (k) in urine samples. Fine needle aspiration revealed pathologic flaming plasma cells. Multiple osteolytic lesions appeared on his skull 5 yr after the initial examination. Thus, a diagnosis of MM concomitant with ATL was made.

Aged↗

Histamine antagonists and d-tubocurarine-induced hypotension in cardiac surgical patients.

Hemodynamic effects and histamine release by bolus injection of 0.35 mg/kg of d-tubocurarine were studied in 24 patients. H1- and H2-histamine antagonists or placebo were given before dosing with d-tubocurarine in a randomized double-blind fashion to four groups: group 1--placebo; group 2--cimetidine, 4 mg/kg, plus placebo; group 3--chlorpheniramine, 0.1 mg/kg, plus placebo; and group 4--cimetidine plus chlorpheniramine. Histamine release occurred in most patients, the highest level 2 minutes after d-tubocurarine dosing. Group 1 had a moderate negative correlation between plasma histamine change and systemic vascular resistance (r = 0.58; P less than 0.05) not present in group 4. Prior dosing with antagonists partially prevented the fall in systemic vascular resistance. These data demonstrate that the hemodynamic changes associated with d-tubocurarine dosing are only partially explained by histamine release. Thus prior dosing with H1- and H2-antagonists provides only partial protection.

Blood Pressure↗

Pluripotent, erythrocytic and granulocytic hemopoietic precursors in chronic granulocytic leukemia.

Using methylcellulose culture techniques, we investigated the behavior of committed and pluripotent hemopoietic precursors (CFUMIX) in marrow cells and blood from patients with chronic granulocytic leukemia (CGL) in the chronic phase whose marrow cells showed the presence of Ph1 chromosomes. The relative concentrations of the marrow precursors in CGL were nearly equal to those in control patients. The mean nucleated cell count in marrow fluid from the patients, however, was 6.3 times that of control values. As a result, the mean concentrations per unit volume of the hemopoietic precursors in CGL were significantly higher than those in control patients. Furthermore, the presence of erythropoietin (Ep) independent BFUE giving rise to erythropoietic bursts in the medium without the addition of Ep was demonstrable in marrow cells and blood. In the peripheral blood, the increment in numbers of CFUC, CFUE, BFUE, and CFUMIX in accordance with the leucocyte count was observed. The present results are consistent with the theory that the clonal expansion in CGL occurs at the level of pluripotent hemopoietic precursors and suggest that CFUMIX in CGL can differentiate into CFUE along the erythropoietic pathway and that a regulatory defect in CGL in present in both granulocytic cells and erythrocytic cells.

Adult↗