Influence of 1: 1 and 1: 2 frequency balloon pumps.
Conditions
Interventions
This design is a quasi-experimental study of pre-test - posttest that compares all those who were at the 1: 1 frequency before and at the start of the intervention with the 1: 2 frequency step..
Sponsors
Esfahan University of Medical Sciences
Eligibility
Sex/Gender
All
Inclusion criteria
Inclusion criteria: People who underwent CABG but due to low cardiac output, mean arterial blood pressure less than 80 mmHg failed to separate from the cardiopulmonary pump device and required postoperative IABP. Patients who are consenting to participate in the project, which will be obtained from the legal guardian if the patient is unconscious.
Exclusion criteria
Exclusion criteria: People who perform CABG at the same time as aortic valve and arch operations such as: aortic valve replacement, Bental surgery, etc.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| The rate of change in the velocity time integral of aortic blood flow during systole. Timepoint: In average dose of Inotropes, this parameter is measured at 1:1 frequency,then the frequency is switched to 1:2 and after 20 minutes, it's measured at 1:2 frequency again. Method of measurement: The velocity time integral value of aortic blood flow during systole is measured by echocardiography.;The measurement of area left ventricular outflow tract ( area LVOT). Timepoint: At moderate doses of inotropic drugs, this variable is measured before the intervention begins. Method of measurement: This variable is measured by echocardiography,.;Rate of change in systolic blood pressure in patients. Timepoint: In average dose of Inotropes, this parameter is measured at 1:1 frequency,then the frequency is switched to 1:2 and after 20 minutes, it's measured at 1:2 frequency again. Method of measurement: it's measured by a built-in arterial line for patients and cardiac monitoring devise.;Rate of change in diastolic blood pressure in patients. Timepoint: In average dose of Inotropes, this parameter is measured at 1:1 frequency,then the frequency is switched to 1:2 and after 20 minutes, it's measured at 1:2 frequency again. Method of measurement: it's measured by a built-in arterial line for patients and cardiac monitoring devise.;Rate of change in heart rates in patients. Timepoint: In average dose of Inotropes, this parameter is measured at 1:1 frequency,then the frequency is switched to 1:2 and after 20 minutes, it's measured at 1:2 frequency again. Method of measurement: it's measured by a cardiac monitoring devise.;Rate of change in mean arterial blood pressure in patients. Timepoint: In average dose of Inotropes, this parameter is measured at 1:1 frequency,then the frequency is switched to 1:2 and after 20 minutes, it's measured at 1:2 frequency again. Method of measurement: it's measured by a built-in arterial line for patients and cardiac monitoring devise.;The measure of bo | — |
Countries
Iran (Islamic Republic of)
Contacts
Public ContactAmir mirmohammadsadeghy
Esfahan University of Medical Sciences
Outcome results
None listed