Would result in a decrease in cardiac output?

A decrease in cardiac output can result from various factors, including reduced heart rate, diminished stroke volume, or impaired myocardial contractility. Conditions such as heart failure, severe dehydration, or significant blood loss can lead to these changes. Additionally, factors like increased systemic vascular resistance can also contribute to a decrease in cardiac output. Overall, any condition that negatively affects the heart's ability to pump effectively or reduces blood volume can lead to lowered cardiac output.