(949) 661-1006
32241 Crown Valley Parkway #200
Dana Point, CA 92629 | Directions
Airway Focused Dentistry Logo
32241 Crown Valley Parkway #200
Dana Point, CA 92629 | Directions

How undiagnosed sleep apnea affects the heart

Posted by

doctor attending to female patient with hearth pain
Experts estimate that more than a quarter of the adult population suffers from sleep apnea, although it is rarely diagnosed (especially in women). In an Airway Focused Dentistry Mini-Residency session, Dr. Bertrand De Silva explained how misdiagnosis occurs, and the devastating impact on a patient’s health. The course was co-developed by Dana Point dentist, Dr. Mark A Cruz.

Dr. De Silva explained how apneic events overload the right ventricle with carbon dioxide, causing it to dilate and fail. Liver problems are often the first symptom, and the beginning of a long and dangerous series of misdiagnoses.

He described the potential chain of events, using a hypothetical patient:
  • Liver problems are misdiagnosed as a nonalcoholic hepatitis, but does not improve with treatment.
  • Next, patient develops peripheral edema (sweating in the legs).
  • When testing does not reveal any blood clots, the patient is diagnosed with heart failure and given diuretics.
  • The diuretic takes fluid off of the left side of the heart, not the afflicted right side. The physiological consequences actually exacerbate the problem.
  • Over time, the effects of nightly apneic events lead to systemic hypertension (high blood pressure).
  • Increased pressure causes tissues on both sides of the heart to stretch, eventually leading to overall enlargement of the heart.
  • Medications such as blood thinners, digoxin, and beta blockers are prescribed. Additional medications are needed to treat side effects such as depression.
  • Blood pressure medication dosage is increased to the point where the heart stops functioning normally, possible causing heart attacks.
  • Eventually the person needs a pacemaker.
  • By the time of death, the patient is taking nearly two dozen prescription medications, all of which are failing to help.
Dr. Cruz, Dr. De Silva, and other healthcare providers involved in the program are committed to improving sleep apnea diagnosis and treatment in the medical community.

Related Articles

« Back to Sleep Disordered Breathing home page

Make an Appointment with
Dr. Mark Cruz


DR. Cruz's Video Blog


Mark A Cruz DDS
RATING 5 Mark A Cruz DDS - reviews
I've been going to Dr. Cruz for 21 years... you wont find a dentist, or someone from ANY profession for that matter, who has a higher level of attention to detail.

Thank you Dr. Cruz for being awesome!


Dentist Serving Laguna Niguel, Dana Point, Laguna Beach,
Aliso Viejo, Mission Viejo, San Juan &
South Orange County
since 1986