[Staff meetings as a fundamental element in work organization]. / As reuniões de equipe como elemento fundamental na organização do trabalho.

The present study was developed as part of the Integrated Research Project "New Forms of Health Work Organization: emphasis on nursing work", carried out at the University Hospital of the Rio Grande Federal University. A series of studies were carried out with the objective of identifying the occurrence, content, periodicity and vision of nursing personnel about staff meetings in order to understand the importance of holding periodic meetings. Interviews were carried out with 21 nursing professionals. Data analysis revealed two main categories: differences in vision about staff meetings among nursing personnel and dichotomy between what theory dictates and what truly happens in staff meetings.

Volatile cardioplegia: fast normothermic cardiac arrest induction and recovery with halothane in isolated rat hearts.

To study the effect of halothane as a cardioplegic agent, ten Wistar rats were anesthetized by ether inhalation and their hearts were perfused in a Langendorff system with Krebs-Henseleit solution (36 degrees C; 90 cm H2O pressure). After a 15-min period for stabilization the control values for heart rate, force(T), dT/dt and coronary flow were recorded and a halothane-enriched solution (same temperature and pressure) was perfused until cardiac arrest was obtained. The same Krebs-Henseleit solution was reperfused again and the parameters studied were recorded after 1, 3, 5, 10, 20 and 30 min. Cardiac arrest occurred in all hearts during the first two min of perfusion with halothane-bubbled solution. One minute after reperfusion without halothane, the following parameters reported in terms of control values were obtained: 90.5% of control heart rate(266.9 +/- 43.4 to 231.5 +/- 71.0 bpm), 20.2% of the force (1.83 +/- 0.28 to 0.37 +/- 0.25 g), 19.8% of dT/dt (46.0 +/- 7.0 to 9.3 +/- 6.0 g/s) and 90.8% of coronary flow (9.9 +/- 1.5 to 9.4 +/- 1.5 ml/min). After 3 min of perfusion they changed to 99.0% heart rate (261.0 +/- 48.2), 98.9% force (1.81 +/- 0.33), 98.6 dT/dt (45.0 +/- 8.2) and 94.8% coronary flow (9.3 +/- 1.4). At 5 min 100.8% (267.0 +/- 40.6) heart rate, 105.0% (1.92 +/- 0.29) force and 104.4% (48.2 +/- 7.2) dT/dt were recorded and maintained without significant differences (P > 0.01) until the end of the experiment. These data demonstrate that volatile cardioplegia with halothane is an effective technique for fast induction of and prompt recovery from normothermic cardiac arrest of the rat heart.

Volatile cardioplegia: fast normothermic cardiac arrest induction and recovery with halothane in isolated rat hearts

To study the effect of halothane as a cardioplegic agent, ten Wistar rats were anesthetized by ether inhalation and their hearts were perfused in a Langgendorff system with Krebs-Henseleit solution (36 graus Celsius; 90 cm H2O pressure). After a 15-min period for stabilization the control values for heart rate, force (T), dT/dt and coronary flow were recorded and a halothane-enriched solution (same temperature and pressure) was perfused until cardiac arrest was obtained. The same Krebs-Henseleit solution was reperfused again and the parameters studied were recorded after 1,3,5,10,20 and 30 min. Cardiac arrest occurred in all hearts during the first two min of perfusion with halothanebubbled solution. One minute after reperfusion without halothane, the following parameters reported in terms of control values were obtained: 90.5 percent of control heart rate (266.9 + 43.4 to 231.5 + 71.0 bpm), 20.2 percent of the force (1.83 + 0.28 to 0.37 + 0.25 g), 19.8 percent of dT/dt (46.0 + 7.0 to 9.3 + 6.0 g/s) and 90.8 percent of coronary flow (9.9 + 1.5 to 9.4 + 1.5 ml/min). After 3 min of perfusion they changed to 99.0 percent heart rate (261.0 + 48.2), 98.9 percent force (1.81 + 0.33), 98.6 dT/dt (45.0 + 8.2) and 94.8 percent coronary flow (9.3 + 1.4). At 5 min 100.8 percent (267.0 + 40.6) heart rate, 105.0 percent (1.92 + 0.29) force and 104.4 percent (48.2 + 7.2) dT/dt were recorded and maintained without significant differences (P>0.01) until the end of the experiment. These data demonstrate that volatile cardioplegia with halothane is an effective technique for fast induction of and prompt recovery from normothermic cardiac arrest of the rat heart.

Reversäo pelo flumazenil do efeito cardiodepressor induzido pelo diazepam / Reversal by flumazenil of the cardiodepressant effect induced by diazepam

Foram estudados em sete ratos de raça wistar os efeitos do antagonista dos receptores GR (centrais). Flumazenil (8-fluoro-1,6-dihidro-5-metil-5-fenil-2h-1,4-benzodiazepina-3-carboxilato de etila) nas concentrações de dez mcg/ml, na depressÒo miocßrdica induzida pelo Diazepam (7-cloro-1,3-dihidro-1-metil-5-fenil-2h-1,4-benzodiazepin-1-ona) em doses de 100 mcg/ml em coraçöes isolados de ratos. Nestes experimentos foi utilizado o mÚtodo de LANGENDORFF e tÚcnica de GOTTLIEB e MAGNUS, modificada por PITCHON, utilizando como perfusato a soluçÒo de Krebs-Henseleit. Podemos constatar que nesta experimentaçÒo, o Flumazenil foi capaz de antagonizar os efeitos cardioinibidores do Diazepam. Estas açöes nos levam a sugerir a presença de receptores Gabarelacionados nos coraçöes isolados estudados.