Upper UTIs are infections of the kidneys. These are potentially life threatening, if bacteria move from the infected kidney into the blood. This condition is called sepsis. Sepsis can cause dangerously low blood pressures, shock, and death.
So whe you hold your breath, you stop getting oxygen in your lungs that go to your heart. The oxygen level in the blood drops, so your muscles need more oxygen, so the heart pumps faster. This is like running, your muscles need more oxygen so heart pumps faster
Oxygen: Shortness of breath happens because of low oxygen blood level. The rbcs have low level oxygen and effect the kidney , heart and brain tissues function. Your doctor has to find the causes of low blood oxygen quickly and treat them. ...Read more.