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2. Hypnic jerk - Wikipedia

   en.wikipedia.org/wiki/Hypnic_jerk

   The causes of hypnic jerk are yet unclear and under study. None of the several theories that have attempted to explain it have been fully accepted. [ 9 ] One hypothesis posits that the hypnic jerk is a form of reflex , initiated in response to normal bodily events during the lead-up to the first stages of sleep, including a decrease in blood ...

3. Bradycardia - Wikipedia

   en.wikipedia.org/wiki/Bradycardia

   The term "relative bradycardia" can refer to a heart rate lower than expected in a particular disease state, often a febrile illness. [8] Chronotropic incompetence (CI) refers to an inadequate rise in heart rate during periods of increased demand, often due to exercise, and is an important sign of SND and an indication for pacemaker implantation.

4. Reflex syncope - Wikipedia

   en.wikipedia.org/wiki/Reflex_syncope

   The underlying mechanism involves the nervous system slowing the heart rate and dilating blood vessels, resulting in low blood pressure and thus not enough blood flow to the brain. [2] Diagnosis is based on the symptoms after ruling out other possible causes. [3] Recovery from a reflex syncope episode happens without specific treatment. [2]

5. Your resting heart rate can tell you a lot about your health ...

   www.aol.com/finance/resting-heart-rate-tell-lot...

   The harder your heart has to work to pump blood throughout your body while you’re not exerting yourself, the higher your resting heart rate. That’s why a lower resting heart rate is indicative ...

6. Orthostatic hypotension - Wikipedia

   en.wikipedia.org/wiki/Orthostatic_hypotension

   Also, the heart rate should be measured for both positions. A significant increase in heart rate from supine to standing may indicate a compensatory effort by the heart to maintain cardiac output. A related syndrome, postural orthostatic tachycardia syndrome (POTS), is diagnosed when at least a 30 bpm increase in heart rate occurs with little ...

7. Here Are Cardiologist-Approved Ways to Lower Your Resting ...

   www.aol.com/cardiologist-approved-ways-lower...

   A good time to check your heart rate is in the morning after you’ve had a good night’s sleep, before you get out of bed or grab your morning coffee, says Dr. Steinbaum.

8. Neurogenic shock - Wikipedia

   en.wikipedia.org/wiki/Neurogenic_shock

   Neurogenic shock is a distributive type of shock resulting in hypotension (low blood pressure), often with bradycardia (slowed heart rate), caused by disruption of autonomic nervous system pathways. [1] It can occur after damage to the central nervous system, such as spinal cord injury and traumatic brain injury.

9. Paroxysmal nocturnal dyspnoea - Wikipedia

   en.wikipedia.org/wiki/Paroxysmal_nocturnal_dyspnoea

   Since paroxysmal nocturnal dyspnea occurs mainly because of heart or lung problems, common risk factors include those that affect the function of the heart and lungs. Risk factors for cardiac diseases include high blood pressure, high cholesterol, diabetes, obesity, and a lifestyle lacking exercise and a healthy diet.