This happens in the severest types of arrhythmia. In these types, the patient faces high chances of having heart and respiration related problems, such as stroke, heart failure and cardiac arrest. What makes these symptoms even more dangerous is that they have the potential of killing the patient in one go, without warning the doctor or other people of the patient’s ailment. So, if a person manages to survive the scare, he/she should immediately be tested for arrhythmia and other heart related diseases.

Heart is not the only organ that is affected by arrhythmia; the pressure also comes on the lungs, as these organs are responsible for oxygenating blood in the first place. This, combined with abnormal heartbeats, give rise to chest pain at frequent, infrequent or continuous phases.

Due to abnormal heart activity, blood transportation and its speed of delivery to organs is severely affected. As both transportation area and speed determine the amount of blood pressure of the body, arrhythmia leads to abnormal blood pressures. Slower heartbeats lead to decrease in blood pressure, while faster heartbeats lead to increase in blood pressure.

Due to the irregular heartbeats, inhalation of oxygen and exhalation of carbon dioxide are severely affected, depending on the speed of the heart. If the heartbeat is faster, it will try to oxygenate more blood than usual, leading to more demand of the gas from the body. The respiratory system will try to compensate it with faster breathing. If the heartbeat is slower, it will not be able to send the required quantity of blood to the lungs to discharge carbon dioxide. This, in turn, will reduce the amount of the gas that has to be exhaled, affecting the overall pattern of breathing. In both the cases, the patient faces the situation of shortness of breath, making him/her heave even after doing negligible work, such as walking over a short distance.

As the heart becomes weak in arrhythmia, the blood faces irregular pumping from the organ, affecting its overall flow. The flow speed, however, cannot be adjusted swiftly, leading to clogging of blood at the vena cava or aorta. When the heart is beating faster, there is development of more oxygen-replenished blood than required, leading to clogging at aorta and subsequent parts. If the heartbeat is slower, more blood is collected outside vena cava and subsequent parts of the organ than the heart can actually intake. This leads to an increase in the risk of blood clotting within the heart that can lead to life threatening consequences.

In arrhythmia, the heart either beats faster or slower. This leads to improper, irregular and insufficient blood transportation to other parts of the body. In some situations, due to a weak heart, the blood is unable to replenish itself with oxygen, leading to lowering of oxygen levels in parts of the body. This leads to lightheadedness (due to less oxygen supply to the brain), dizziness (due to weakness) and fainting.

People suffering with arrhythmia become aware of their heartbeats, which is abnormal. They start to feel it at frequent intervals, infrequent timings or all the time. At times, this feeling is harmless, but at other times, in most of the cases, this feeling leads to complications such as arrhythmia.