Active clinical trials for "Hypotension"

Rationale: Orthostatic hypotension increases with age and is associated with increased vascular and all-cause mortality. The prevalence of orthostatic hypotension is also increased in diabetic subjects. In order to prevent related adverse events and vascular mortality it is of great interest to examine the prevalence of orthostatic hypotension in elderly diabetic subjects. Objective: To examine the prevalence of orthostatic hypotension and associated adverse events in type 2 diabetic elderly subjects. Study design: Cross-sectional observational study. Study population: Elderly type 2 diabetic subjects (70 years and older).

The purpose of this study is to investigate the processing of cannabis, and to investigate the occurrence of effects of cannabis on the cardiovascular system and the central nervous system; at higher levels of exposure.

This study investigates cardiac output in young children under 18 months of age during the perioperative period by means of electrical cardiometry.

This study was conducted to compare the effectiveness of ephedrine versus norepinephrine for management of hypotension after spinal anesthesia for mothers undergoing elective cesarean section

To estimate sensitivity and specificity of preoperative IVCCI, max aortic diameter and IVC:Ao index as predictors of hypotension after induction of general anesthesia. To compare accuracy of preoperative values of IVC: Ao index to preoperative IVCCI in prediction of hypotension after induction of general anesthesia.

This prospective observational study aimed to investigate whether there is a relationship between weight, height, BMI, abdominal circumference (AC), hip circumference (HC), and AC-to-hip ratio with the incidence of hypotension in patients undergoing cesarean section under spinal anesthesia.

Acute myocardial infarction (AMI) is a significant complication following non-cardiac surgery. The investigators sought to evaluate incidence of perioperative AMI, its preoperative and intraoperative risk factors and the outcomes after this complication.

The purpose of this study is to compare the administration of two different doses of ondansetron to placebo to prevent hypotension and bradycardia following spinal anaesthesia. Apart from haemodynamic parameters (blood pressure and heart rate),characters of the spinal blockage (time of onset and regression) will be recorded too.

Intraoperative hypotension is common in non cardiac surgery. longer duration of intraoperative hypotension is related with postoperative morbidity and mortality. however, with the change of hypotension criteria, the duration threshold also change. the relationship of different hypotension criteria and its duration is unclear. This study is to explore the their relationship.

Hypotension is extremely common after induction of spinal anesthesia for cesarean delivery. Anesthetic blockade of the sympathetic outflow of the spinal cord causes vasodilation, and is one cause of this hypotension. The higher the spread of the blockade will result in a higher incidence of hypotension. Injected hyperbaric medication has about 15 minutes to spread within the intrathecal space before it will be taken up by the nerve roots. The time that a patient remains in one position after medication injection will affect the spread of the resultant anesthetic block. A patient who is left sitting for a longer period of time after injection of hyperbaric medication will have a lower level of block than someone who is placed supine immediately. In this study, the investigators wish to use up down sequential analysis to determine the time period a patient should remain seated after intrathecal injection of hyperbaric bupivacaine and fentanyl that will result in a 50% rate of hypotension.